Climate-Resilient Agriculture in Central Europe: Crop Diversification, Food Safety, and Integrated Adaptation Pathways

Abstract

Climate change is increasingly reshaping agricultural systems across Central Europe through rising temperatures, altered precipitation regimes, droughts, heatwaves, and expanding biological risks. These pressures threaten the stability of conventional cropping systems while simultaneously affecting food safety, storage systems, processing infrastructure, and regional food security. This review explores the role of adaptive crop diversification as a key strategy for enhancing agricultural resilience in the face of future climate uncertainty. Drawing on IPCC AR6 scenarios, CMIP6 simulations, and EURO-CORDEX projections, we analyze major climatic stressors affecting Central European agriculture, including heat stress, hydrological instability, soil degradation, invasive pests, fungal pathogens, and mycotoxin contamination. Particular attention is given to shifts in crop suitability and the growing relevance of climate-resilient crops such as sorghum, millet, quinoa, chickpea, lentil, soybean, camelina, hemp, and miscanthus. Beyond field-level adaptation, the review highlights the critical role of post-harvest systems, storage infrastructure, processing adaptability, and food safety within climate-resilient food systems. We additionally evaluate socioeconomic barriers, policy frameworks, and emerging technological approaches, including digital agriculture and artificial intelligence. A central contribution of this review is the integration of crop diversification, food safety, post-harvest adaptation, and governance challenges within a unified climate-resilience framework for Central European agriculture. We conclude that long-term agricultural resilience in the region will require a systemic transformation that integrates ecological, technological, economic, institutional, and social dimensions of adaptation.

1. Introduction

1.1. Background

Climate change is increasingly recognized as one of the most significant threats to agricultural productivity, food security, and environmental sustainability worldwide. In Europe, particularly in Central Europe, agricultural systems are becoming increasingly exposed to rising temperatures, altered precipitation regimes, greater climatic variability, and more frequent extreme weather events [1]. Recent decades have demonstrated that climate change no longer represents a distant environmental concern, but an immediate and accelerating challenge affecting crop productivity, soil quality, water availability, and the overall resilience of food systems. According to the Intergovernmental Panel on Climate Change (IPCC), Europe is among the fastest-warming regions globally, with Central Europe experiencing pronounced increases in heatwaves, drought frequency, and hydrological instability under both intermediate- and high-emission scenarios [2].

Globally, agricultural adaptation is guided by distinct institutional frameworks. The FAO emphasizes Climate-Smart Agriculture (CSA) to balance productivity with resilience [3], while networks like CGIAR advocate for farmer-led agroecological transitions. Meanwhile, industrialized regions such as North America prioritize data-driven precision tools and biotechnology. Rather than being mutually exclusive, integrating these approaches—combining precision technologies with localized agroecological practices—offers a synergistic framework to strengthen food system resilience worldwide.

Across the European continent, approaches to agricultural climate adaptation vary significantly depending on distinct regional pressures [4]. In Southern Europe, research predominantly focuses on mitigating chronic water scarcity and severe heat stress through advanced irrigation technologies and drought-tolerant cultivars [5]. Conversely, studies in Northern Europe frequently explore the dual nature of climate shifts, balancing the opportunities of extended growing seasons with the challenges of novel pest emergence and increased precipitation [6].

In this context, Central Europe occupies a particularly vulnerable position due to its transitional climatic characteristics and strong continental influences. It represents a climatic interface among Atlantic, Mediterranean, and continental weather systems, making it highly sensitive to changes in atmospheric circulation and precipitation anomalies [7]. Consequently, agricultural production is increasingly affected by the dual occurrence of prolonged drought periods and intense precipitation events within the same growing season [8]. This drought–flood duality has become one of the defining climatic risks of the region, generating substantial uncertainty in crop production and farm management. Heatwaves have also become more frequent and severe, especially during critical phenological stages such as flowering and grain filling, leading to considerable reductions in yield quantity and quality [9,10]. While agricultural systems globally are experiencing climate-induced stress, Central Europe is warming at a rate exceeding the global average [11]. This rapid shift introduces unprecedented challenges—such as acute water scarcity, novel pest pressures, and heat stress—to an agricultural sector historically adapted to temperate, rainfed conditions [12].

The impacts of climate change are already visible in the performance of several major crops traditionally cultivated in Central Europe. Maize production has become increasingly unstable due to drought stress and elevated summer temperatures, particularly during reproductive development stages that are highly sensitive to water deficits [13]. Winter wheat, despite its relatively broader climatic tolerance, is also experiencing increasing yield variability, quality deterioration, and heat-induced shortening of grain-filling periods [14]. Oilseed crops such as sunflower and rapeseed are similarly exposed to changing seasonal patterns, pest pressures, and winter temperature anomalies that affect germination, flowering, and disease susceptibility [15]. The cumulative effect of these processes threatens not only agricultural productivity but also regional food security, market stability, and the long-term viability of existing cropping systems.

In this region, effectively mitigating the impacts of climate change on agriculture requires a comprehensive agroecological transition toward diversified, resilient food systems. Rather than treating adaptive diversification, food system resilience, and agroecology as distinct concepts, they must be understood as mutually reinforcing pillars [16,17,18]. By integrating these approaches, agricultural networks can build the necessary systemic resilience to adapt to climatic extremes, stabilize crop yields, and secure food supply chains from field production through post-harvest management [19,20,21].

Currently, the literature on agricultural climate adaptation is highly fragmented, typically isolating specific stages of the supply chain rather than addressing the system as a whole [22]. To overcome this limitation, this review presents a novel, integrated framework that evaluates the entire agricultural continuum, linking field-level crop diversification directly to post-harvest management, processing infrastructure, and food safety under shifting climatic conditions. By synthesizing these interconnected elements rather than treating them as separate disciplines, this approach provides a cohesive scientific basis for developing robust policy frameworks and resilient food systems.

1.2. Aim of the Study

Accordingly, in the Central European context, this paper aims to: (i) study the projected impacts of climate change on agricultural and food systems; (ii) evaluate the role of adaptive crop diversification in strengthening climate resilience; (iii) assess the implications of climate change for food safety, storage, processing systems, and post-harvest infrastructure; and (iv) analyze the technological, socioeconomic, and governance factors influencing long-term agricultural adaptation.

This review adopts an integrated food-system perspective linking climate projections, adaptive crop diversification, food safety risks, post-harvest systems, storage infrastructure, and governance challenges within a unified resilience framework. By synthesizing evidence across these interconnected dimensions, the study contributes a systems-based perspective on long-term resilience and sustainability of agricultural and food supply systems’ under climate change scenarios in the agroclimatic transition zone of Central Europe.

1.3. Positioning of the Present Review Within Existing Literature

Reviews addressing climate impacts on European agriculture have primarily concentrated on projected changes in crop productivity, water availability, or climatic suitability under different emission scenarios. Others have focused on diversification practices such as agronomic adaptation measures, emphasizing crop physiology, genetic resources, or ecosystem services. Separate streams of literature have analyzed food safety challenges associated with climate-induced mycotoxin contamination, storage losses, biological hazards, and supply-chain resilience, while governance-oriented reviews have evaluated the role of agricultural policies, sustainability strategies, and institutional adaptation mechanisms. Although these contributions provide valuable insights, they rarely establish explicit conceptual links among production systems, post-harvest processes, food safety, socioeconomic constraints, technological innovation, and governance instruments.

Rather than examining individual adaptation measures in isolation, this review evaluates how climatic pressures interact with crop diversification, post-harvest management, food-system resilience, technological innovation, and policy interventions to influence long-term agricultural sustainability. Particular attention is given to the interdependencies among biological, technological, economic, and institutional dimensions of adaptation.

Furthermore, unlike many previous reviews that primarily summarize agronomic evidence, the present study integrates findings from plant science, climate science, food safety, agricultural engineering, economics, and governance research. This interdisciplinary perspective enables the identification of emerging knowledge gaps, methodological limitations, and future research priorities that may not be apparent within single-discipline reviews. Consequently, the principal contribution of this review lies not only in summarizing existing evidence but also in proposing an integrated conceptual understanding of climate-resilient agricultural transformation in Central Europe (

Table 1. Comparative positioning of the present review relative to previous review literature.

Reviews	Main Focus	Food Safety	Post-Harvest	Governance	Central Europe	Integrated Resilience Framework	References
Previous climate adaptation reviews	Climate impacts on crops	Limited	No	Limited	Partial	No	[23,24,25,26]
Previous crop diversification reviews	Agronomic diversification	No	Limited	No	Mixed	No	[27,28,29]
Previous food safety reviews	Contaminants and food safety	Yes	Limited	Limited	Mixed	No	[30,31,32]
Previous agricultural governance reviews	Policies and adaptation	Limited	No	Yes	Mixed	No	[33,34,35]
Present review	Integrated climate resilience	Yes	Yes	Yes	Yes	Yes

).

2. Review Methodology

This review followed the general principles of the PRISMA 2020 Statement for reporting literature reviews while adopting a narrative synthesis approach appropriate for interdisciplinary environmental and agricultural research [36]. Because the objective of this study was to integrate evidence originating from agronomy, climate science, food safety, post-harvest technology, agricultural economics, and governance rather than estimate pooled intervention effects, a quantitative meta-analysis was not considered appropriate.

A systematic literature search was conducted between January and March 2026 using four major bibliographic databases: Web of Science Core Collection, Scopus, ScienceDirect, and Google Scholar. These databases were selected to ensure broad coverage of peer-reviewed literature across agricultural sciences, environmental sciences, food science, engineering, and policy studies. Reference lists of key review papers and highly cited publications were also screened manually to identify additional relevant studies that were not retrieved through database searches.

Database searches were performed using combinations of Boolean operators, truncation symbols, and quotation marks where appropriate. The primary search strategy combined climate-related, agronomic, diversification, resilience, food-system, and governance terms. The principal search expression was: (“climate change” OR “global warming” OR “climate adaptation”) AND (“crop diversification” OR “alternative crops” OR “agricultural diversification”) AND (“Central Europe” OR “Hungary” OR “Austria” OR “Slovakia” OR “Czech Republic” OR “Poland”) AND (“food safety” OR “post-harvest” OR “storage” OR “resilience” OR “governance”). The assessment involved the iterative screening of 1351 scientific articles, institutional reports, and review articles (referred to as records and publications in Figure 1).

Studies were included if they:

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Investigated climate-change impacts, adaptation, crop diversification, post-harvest systems, food safety, or agricultural governance;

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Focused on Central Europe or provided findings directly applicable to Central European agricultural systems;

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Were published in peer-reviewed scientific journals;

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Were written in English;

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Provided sufficient methodological description and original or review-level scientific evidence.

Studies were excluded if they:

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Were conference abstracts, editorials, dissertations, or non-peer-reviewed reports;

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Focused exclusively on unrelated geographical regions without transferable implications;

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Lacked sufficient methodological transparency;

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Duplicated previously identified publications;

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Addressed topics outside the scope of agricultural climate adaptation.

This approach enabled the integration of evidence from agronomic, environmental, technological, economic, and policy perspectives within a unified analytical framework. All retrieved records were exported into a reference-management database, where duplicate publications were identified through automated matching followed by manual verification. Titles and abstracts were subsequently screened for relevance to the review objectives. Potentially eligible publications then underwent full-text assessment according to the predefined inclusion and exclusion criteria. To improve consistency during the selection process, the screening procedure was performed independently by the authors. Any differences in study eligibility were resolved through discussion until consensus was achieved. Following the complete screening process, 117 publications met all eligibility criteria and were included in the final qualitative synthesis (Figure 1).

Given the interdisciplinary nature of the reviewed literature, formal risk-of-bias tools developed for clinical meta-analyses were not considered appropriate. Instead, an evidence-quality appraisal was performed using qualitative criteria adapted for environmental review studies. Publications were evaluated according to (i) scientific credibility of the publication source, (ii) methodological transparency, (iii) relevance to the review objectives, (iv) consistency with other published evidence, and (v) contribution to understanding climate adaptation and agricultural resilience. Greater interpretative weight was assigned to peer-reviewed review articles, long-term field experiments, multi-site investigations, and internationally recognized institutional reports where appropriate. No study was excluded solely on the basis of quality assessment; instead, evidence strength was considered during interpretation of the synthesized findings. Based on these, a qualitative appraisal framework was used to guide interpretation of the reviewed evidence rather than to exclude studies from the synthesis (

Table 2. Evidence appraisal framework applied in the present review.

Criterion	Assessment Approach	Purpose
Scientific quality	Peer-reviewed journal, recognized institutional report	Ensure credibility
Methodological transparency	Clear study design and methods	Assess reproducibility
Relevance	Direct relevance to Central European agriculture	Maintain thematic consistency
Consistency	Agreement with other published evidence	Evaluate robustness
Level of evidence	Review article, long-term field experiment, multi-location study, modelling study, laboratory study	Support interpretation

).

3. Climate Change Scenarios in Central Europe

3.1. Regional Climate Projections

Understanding future climate conditions is essential for evaluating the long-term viability of agricultural systems in Central Europe. Climate projections consistently indicate that the region will experience substantial environmental changes during the twenty-first century, including rising temperatures, altered precipitation patterns, increasing hydrological variability, and more frequent weather extremes [37]. These projected changes are expected to significantly influence crop suitability, agricultural productivity, water availability, pest dynamics, and food system stability.

Recent climate projections for Europe are primarily based on the Sixth Assessment Report (AR6) of the Intergovernmental Panel on Climate Change (IPCC), coupled atmosphere–ocean general circulation models from the Coupled Model Intercomparison Project Phase 6 (CMIP6), and dynamically downscaled regional climate simulations developed within the EURO-CORDEX initiative. Together, these frameworks provide highly detailed insights into future climatic conditions at both continental and regional scales [2,38].

The IPCC AR6 framework introduced a new generation of integrated climate scenarios based on Shared Socioeconomic Pathways (SSPs), which combine greenhouse gas concentration trajectories with socio-economic development assumptions. The SSP framework enables the simultaneous evaluation of climate forcing, demographic trends, technological development, mitigation capacity, and adaptation potential. For agricultural assessments in Central Europe, three scenarios are particularly relevant: SSP1-2.6, SSP2-4.5, and SSP5-8.5. These scenarios represent low-, intermediate-, and high-emission development pathways, respectively, and provide a broad spectrum of possible climatic futures [39,40]. Under intermediate- and high-emission pathways, Central Europe is projected to experience substantial warming, erratic precipitation, and intense summer heatwaves.

The EURO-CORDEX initiative has been particularly important for improving regional-scale climate assessments in Europe. By dynamically downscaling global climate model outputs to higher spatial resolutions, EURO-CORDEX simulations provide more accurate representations of local climatic processes, topography, and extreme weather patterns relevant to agriculture [41]. These regional projections consistently demonstrate that Central Europe is highly exposed to increasing hydroclimatic variability, particularly in lowland agricultural regions that are strongly dependent on rainfed crop production [42].

Regional projections from EURO-CORDEX simulations indicate that Central Europe will likely be increasingly characterized by climatic extremes under SSP5-8.5 conditions. The frequency of consecutive dry days is projected to increase significantly, while soil moisture deficits may intensify during critical crop development periods. Heat stress during the flowering and grain-filling stages is expected to reduce the productivity of major crops such as maize, wheat, sunflower, and rapeseed. Moreover, elevated nighttime temperatures may negatively affect crop respiration, grain quality, and physiological recovery processes [43,44].

In addition to temperature and precipitation changes, for Central Europe, climate models also project increasing variability in agroclimatic conditions. Climatic instability itself may become one of the most significant challenges for agricultural management because unpredictable weather patterns complicate planting decisions, irrigation planning, pest management, harvesting operations, and storage preparation. Increased variability is expected to amplify production risks, even in years when average climatic conditions appear relatively favorable [45].

Another important concern is the increasing frequency of compound climatic events, in which multiple stressors occur simultaneously or sequentially [46]. Examples include drought combined with heatwaves, excessive rainfall following prolonged dry periods, or warm winters followed by late spring frosts. Such compound events can generate disproportionately large agricultural losses because crops exposed to one stressor often become more vulnerable to subsequent environmental disturbances. Recent studies suggest that compound drought–heat events are likely to become substantially more frequent across Central Europe during the twenty-first century, particularly under SSP2-4.5 and SSP5-8.5 scenarios [47].

Although virtually all climate models project continued warming across Central Europe, greater uncertainty persists regarding future precipitation regimes and the frequency of compound climatic extremes. Differences among modelling frameworks, emission scenarios, and regional downscaling approaches affect the magnitude rather than the direction of projected change. Accordingly, adaptation strategies should prioritize robustness under multiple plausible futures instead of relying on individual climate projections.

3.2. Expected Agricultural Stressors

Climate change is expected to intensify multiple interacting stressors affecting agricultural systems in Central Europe [48]. These stressors include rising temperatures, altered hydrological regimes, soil degradation processes, and increasing biological risks that collectively threaten agricultural productivity, food safety, and ecosystem stability. Importantly, the combined and cumulative nature of these stressors may generate nonlinear impacts that exceed the adaptive capacity of conventional cropping systems. Consequently, understanding the mechanisms through which climatic stressors affect agricultural systems is essential for evaluating adaptive diversification strategies and resilience-oriented management approaches. Figure 2 summarizes the major projected climate-related stressors affecting the region and illustrates how interconnected climatic, biological, and agroecological pressures collectively intensify the need for resilient and diversified agricultural systems.

The quantitative evidence summarized in

Table 3. Quantitative projections of climate change impacts relevant to Central European agriculture.

Indicator	Projection	Time Horizon	Central European Implication	Representative References
Mean annual temperature	+1.5–2.5 °C	2041–2070	Longer growing season but greater heat stress	[11,37,49]
Summer temperature	+2–4 °C	End of century	Increased heat-wave frequency	[11,50]
Summer precipitation	−10 to −30%	Mid–late century	Higher drought risk	[11,49]
Heavy precipitation events	Increase	Ongoing	Greater erosion and flooding	[7,49,51]
Drought frequency	Significant increase	2050–2100	Water scarcity	[11,52]
Heat-wave duration	Longer	Ongoing	Crop stress and lower yields	[11,53]

supports the conceptual relationships illustrated in Figure 1. Although the exact magnitude varies among climate scenarios and regions, the reviewed literature consistently indicates increasing temperatures, reduced summer precipitation, and more frequent extreme events as the principal drivers of agricultural adaptation in Central Europe.

Collectively, the available evidence demonstrates broad agreement that climatic stress is increasing across all major cropping systems. However, the severity of projected impacts differs considerably among studies because of variation in crop species, local environmental conditions, management practices, and adaptation assumptions. These differences reinforce the importance of region-specific diversification strategies rather than universal recommendations.

3.2.1. Temperature Changes

Among the most significant projected climatic changes in Central Europe is the steady increase in average and extreme temperatures. Regional climate simulations consistently indicate substantial warming across all seasons, with particularly pronounced increases during summer months and under higher-emission scenarios [54]. Elevated temperatures directly influence crop physiology, phenological development, evapotranspiration rates, and reproductive success, thereby altering both crop productivity and quality.

Heat stress has emerged as one of the most critical threats to agricultural production in Central Europe. High temperatures during sensitive developmental stages such as flowering, pollination, and grain filling can substantially reduce crop yields and impair its quality. In maize, temperatures exceeding critical thresholds during flowering may disrupt pollen viability and fertilization, resulting in severe yield losses. Similarly, wheat is highly vulnerable to terminal heat stress, which accelerates grain maturation and shortens grain-filling periods, ultimately reducing grain weight and protein quality [55]. Oilseed crops such as sunflower and rapeseed are also increasingly exposed to heat-induced reproductive stress and elevated evapotranspirative demand.

Temperature changes are also expected to influence the duration and timing of growing seasons throughout Central Europe. Rising temperatures may extend frost-free periods and allow earlier sowing dates in some regions, potentially enabling the cultivation of thermophilic crops previously unsuitable under historical climatic conditions. However, prolonged growing seasons may also increase exposure to drought periods, pest pressures, and heatwaves during critical crop development stages [56]. Therefore, longer growing seasons do not necessarily translate into improved agricultural productivity.

Another important consequence of rising winter temperatures is reduced vernalization potential. Vernalization refers to the requirement of certain crops, particularly winter cereals and oilseed crops, for prolonged exposure to cold temperatures to initiate flowering and reproductive development. Warmer winters may reduce vernalization efficiency in these regions, thereby affecting flowering synchronization, developmental stability, and final yield formation in winter wheat and rapeseed systems [57].

Accelerated phenological development is also projected to become increasingly common under future climatic conditions. Elevated temperatures tend to hasten physiological development, causing earlier flowering, maturation, and senescence. Although accelerated phenology may occasionally reduce exposure to late-season droughts, it often shortens biomass accumulation periods and limits yield potential. Furthermore, altered phenological timing may disrupt ecological synchrony between crops, pollinators, pests, and beneficial organisms, generating additional ecological instability within agroecosystems [58].

3.2.2. Hydrological Instability

Hydrological instability is expected to become one of the defining characteristics of future agricultural conditions in Central Europe. Climate projections indicate substantial increases in drought frequency, severity, and duration, particularly during the summer growing season. Reduced summer precipitation combined with higher evapotranspiration rates is expected to intensify agricultural water deficits across much of the Pannonian Basin and surrounding lowland regions [59].

Drought stress represents a major constraint for rainfed agriculture, which still dominates large parts of Central Europe. Soil water deficits during critical developmental stages can significantly reduce photosynthetic activity, nutrient uptake, and biomass production. Maize is highly vulnerable to drought during reproductive development, while wheat and sunflower may experience substantial yield reductions under prolonged moisture stress conditions [42,60].

Declining soil moisture represents a critical hydrological concern. Even without strong precipitation decreases, higher temperatures can increase evapotranspiration rates and reduce effective soil water retention. Persistent soil moisture deficits negatively affect root development, microbial activity, nutrient cycling, and crop resilience to additional stressors. Furthermore, reduced soil moisture may increase susceptibility to erosion, salinization, and organic matter degradation [61].

At the same time, climate change is projected to increase the frequency of extreme precipitation events and flash floods. Although total annual precipitation may not decline uniformly across the region, rainfall distribution is expected to become increasingly erratic, with prolonged dry periods interrupted by short-duration high-intensity rainfall events. Such precipitation extremes contribute to runoff generation, soil erosion, nutrient leaching, and physical damage to crops and agricultural infrastructure [45].

Increasing irrigation pressure is therefore likely to become a major challenge for agricultural systems in Central Europe. Rising temperatures and declining soil moisture are expected to substantially increase irrigation demand, particularly for high-value crops and intensive production systems. However, expanding irrigation capacity may be constrained by water availability, infrastructure limitations, economic costs, and competing demands from urban, industrial, and environmental sectors. Water-scarcity conflicts may emerge as a major policy and resource-management issue in the region [62,63].

3.2.3. Biological Stressors

Climate change is expected to alter the biodynamics of agricultural systems in Central Europe. Rising temperatures and changing precipitation regimes may facilitate the northward expansion and establishment of invasive pests and pathogens previously restricted to warmer climatic zones. Higher winter survival rates, accelerated reproductive cycles, and extended growing seasons may increase pest population densities and geographic distribution ranges [64].

Fungal pathogens represent a particularly important concern under future climatic conditions. Increased humidity fluctuations, temperature variability, and extreme weather events may promote fungal proliferation and disease outbreaks in both field and storage environments. Crops stressed by drought or heat often become more susceptible to fungal infection, further amplifying disease risks [65]. The increasing occurrence of mycotoxins is considered one of the most significant food safety threats associated with climate change. Elevated temperatures and moisture stress may favor toxigenic fungi such as Aspergillus, Fusarium, and Penicillium species, increasing contamination risks in cereals, maize, and oilseed crops. In particular, aflatoxin contamination—historically associated with subtropical climates—has already been detected more frequently in parts of Southern and Central Europe during extreme heat and drought years [66]. Such developments pose serious risks to food safety, livestock health, international trade, and regulatory compliance.

Climate change is also expected to intensify weed pressure within the region’s agricultural systems. Elevated CO₂ concentrations may stimulate the growth and competitiveness of certain weed species, while warmer temperatures may enable the establishment of invasive thermophilic weeds. Changes in herbicide efficacy under elevated temperatures and altered precipitation patterns may further complicate weed management strategies [67].

3.2.4. Agroecological Consequences

Climate change is expected to accelerate several forms of soil degradation across Central Europe, threatening the long-term sustainability of agricultural production systems. Soil erosion is projected to intensify due to increasing precipitation extremes, runoff intensity, and declining vegetation cover during drought periods. Water erosion may remove nutrient-rich topsoil layers, reduce soil fertility, impair water retention capacity, and increase sediment transport into aquatic ecosystems [68].

Salinization may also become increasingly relevant in certain irrigated and drought-prone regions, particularly within the Pannonian Basin, where high evapotranspiration rates and declining groundwater availability may concentrate salts in upper soil horizons. Although salinization has historically been more strongly associated with arid and semi-arid regions, climate change may expand salinity risks into previously unaffected agricultural areas [69].

Another important concern is the gradual decline in soil organic matter under warmer, drier climatic conditions. Elevated temperatures accelerate organic matter mineralization and microbial decomposition, while drought conditions reduce biomass production and organic residue inputs. Declining soil organic carbon negatively affects soil structure, nutrient retention, microbial biodiversity, and water-holding capacity, thereby reducing agroecosystem resilience [61,70]. Since soil organic matter plays a central role in carbon sequestration and climate mitigation, its degradation has environmental consequences beyond agricultural productivity.

3.3. Geographic Hotspots

Although climate change affects all of Central Europe, several subregions are expected to experience particularly pronounced agricultural vulnerabilities due to their geographic, climatic, hydrological, and ecological characteristics. The spatial heterogeneity of projected climate risks across Central Europe highlights the need for regionally differentiated adaptation strategies and crop diversification pathways (Figure 3).

3.3.1. Pannonian Basin

The Pannonian Basin is widely considered one of the most climate-vulnerable agricultural regions in Europe. Characterized by strong continentality, relatively low precipitation, and high summer evapotranspiration, the region is highly exposed to drought stress, heatwaves, and declining soil moisture. Climate projections indicate substantial increases in aridity and hydroclimatic variability, threatening the long-term viability of water-intensive crops such as maize [59]. The basin’s extensive lowland agricultural systems and dependence on rainfed production further increase vulnerability to climatic instability [72].

3.3.2. Carpathian Region

The Carpathian region is a complex, mountainous, transitional agroecological zone characterized by high environmental heterogeneity and climatic sensitivity. Rising temperatures are expected to alter altitudinal vegetation zones, snow cover duration, and hydrological dynamics, thereby influencing both crop production and livestock systems. Increased precipitation variability and weather extremes may trigger erosion risk, landslides, and ecosystem degradation in mountainous landscapes [73]. Simultaneously, some higher-altitude areas may temporarily benefit from extended growing seasons and warmer conditions.

3.3.3. Danube Basin

The Danube Basin constitutes one of Europe’s most important agricultural and hydrological regions. Climate change is expected to significantly affect river discharge regimes, groundwater availability, flood frequency, and irrigation systems throughout the basin. Simultaneous exposure to droughts and floods poses substantial challenges for agricultural management, infrastructure resilience, and transboundary water governance [74]. Agricultural intensification combined with climatic instability may also increase nutrient runoff, eutrophication risks, and ecological degradation within the basin.

3.3.4. Alpine Transition Zones

Alpine transition zones located at the interface between mountainous and lowland environments are expected to experience substantial climatic shifts. Reduced snow cover, glacier retreat, altered runoff dynamics, and increased climatic variability may affect both crop production and pasture-based systems. These regions may experience opportunities for crop diversification and risks associated with hydrological instability, soil erosion, and ecosystem fragmentation [75].

Collectively, these geographic hotspots demonstrate that climate change impacts in Central Europe will not be spatially uniform. Instead, regional vulnerabilities will depend on the interaction between climatic exposure, agroecological conditions, water availability, infrastructure, and socio-economic adaptive capacity. Understanding these differences is essential for developing region-specific strategies and resilience-oriented agricultural policies.

4. Crop Suitability Shifts Under Climate Change

As proposed, European regional climate projections indicate mean annual warming of approximately 1.5–2.5 °C by the middle of the century under intermediate emission scenarios, which would substantially alter the agroclimatic suitability of crops across Central Europe during the twenty-first century. Rising temperatures, changing precipitation regimes, increasing atmospheric CO₂ concentrations, and more frequent climatic extremes are already affecting crop productivity, phenology, and geographical distribution patterns [76]. As the suitability of traditional staples such as maize and winter wheat increasingly declines under combined heat and water stress, regional cropping systems are likely to undergo progressive restructuring, creating opportunities for alternative species better adapted to warmer and drier conditions [45,77]. Consequently, diversification toward climate-resilient crops—including sorghum, legumes, and drought-tolerant pseudocereals—may become an agronomic necessity rather than merely an adaptive option [78]. These crop suitability shifts represent one of the principal mechanisms through which climate change is expected to reshape agricultural production, food security, and rural economies across Central Europe [45,77].

The impacts of these shifts may extend far beyond field-level productivity. Altered crop suitability will influence storage infrastructure, processing technologies, market organization, supply chains, nutritional security, and agricultural policy frameworks. Moreover, the transition toward new cropping systems will require significant adjustments in agronomic knowledge, seed systems, processing industries, and risk management strategies.

4.1. Declining Viability of Traditional Crops vs. Emergence of Alternative Crops

As climatic suitability shifts across Central Europe, numerous alternative crops previously considered marginal or geographically restricted are gaining increasing relevance. These crops may provide important opportunities for adaptive diversification due to their greater tolerance to drought, heat, and climatic variability [42,45]. However, successful integration depends not only on agroclimatic suitability but also on processing infrastructure, market development, consumer acceptance, and regulatory frameworks. Additionally, these crops differ substantially from conventional production systems in terms of agronomic requirements, processing characteristics, and market integration.

Table 4. Comparative characteristics of traditional and emerging climate-resilient crops in Central Europe.

Traditional Crops
Crop Species	Key Advantages & Climate Resilience Characteristics	Key Vulnerabilities & Climate Risks	Strategic/Industrial Uses & Market Drivers	Main Barriers to Large-Scale Adoption	References
Maize (Zea mays L.)	Historically, it has been a major crop in Central Europe.	Highly sensitive to drought and heat during flowering; increased mycotoxin risk (Aspergillus, Fusarium).	Feed, food, and industrial raw material.	Limited irrigation potential; northward shift in cultivation.	[42,66,79,80,81]
Winter wheat (Triticum aestivum L.)	Moderate drought tolerance; short growing cycles; thrives in low-input conditions.	Increasing yield variability under heat-drought stress; shortened grain-filling periods; quality and disease risks.	Central role in regional food security, flour functionality, and baking industries.	Requires significant shifts in cultivar selection, sowing dates, and water conservation practices.	[77,82,83]
Rapeseed (Brassica napus L.)	Traditional winter oilseed crop.	Frost injury, pest expansion, and drought-related yield losses.	Biofuels, vegetable oils, and protein meal.	High hydroclimatic variability makes regional production increasingly unstable.	[84,85,86,87]
Emerging/Alternative Crops
Sorghum (Sorghum bicolor L.)	Deep root system; high water-use efficiency; physiological heat tolerance.	Limited cold tolerance during early growth.	Food, feed, bioethanol, biomass; maize silage alternative.	Underdeveloped regional processing infrastructure necessitates adjustments to feed formulation and market acceptance.	[88,89,90]
Millet (Panicum miliaceum L.)	Highly drought-tolerant; low-input crop.	Lower yields than major cereals.	Gluten-free, nutrient-rich food markets.	Limited local processing systems (requires investment in dehulling, milling, and product manufacturing).	[91,92]
Quinoa (Chenopodium quinoa Willd.)	Drought and salinity tolerant; adaptable.	Sensitive to photoperiod and excess humidity.	High-protein functional food crop.	Demands precise cultivar selection; commercial feasibility is heavily dependent on specialized saponin-removal tech.	[93,94,95]
Chickpea & lentil (Cicer arietinum L./Vicia lens (L.) Coss. & Germ.)	Drought-tolerant; nitrogen-fixing; low water demand.	High vulnerability to waterlogging and specific fungal diseases.	Enhances soil fertility via crop rotations; aligns with the European strategy to reduce reliance on imported soy.	Difficulties in disease management; lack of specialized harvest mechanization and processing infrastructure.	[96,97,98]
Soybean (Glycine max L.)	Nitrogen fixation; expanding northward suitability.	Heat and drought stress reduce yields.	Plant protein and feed independence.	High yield volatility under extreme climate scenarios.	[99,100]
Amaranth (Amaranthus spp.)	Stress-tolerant; drought-resistant; efficient water use.	Susceptible to frost and wet harvest conditions.	Functional foods rich in protein and minerals.	Niche market; limited processing capacity.	[101,102,103,104]
Hemp (Cannabis sativa L.)	Drought-tolerant; low pesticide demand; supports soil health.	Sensitive to compaction and weed pressure.	Textiles, bioplastics, pharmaceuticals, and bio-based industries.	High regulatory complexity and severe market price volatility.	[105,106]
Miscanthus (Miscanthus × giganteus J.M.Greef, Deuter ex Hodk., Renvoize)	Perennial biomass crop; drought-tolerant; stores soil carbon.	High summer water demand; early frost sensitivity.	Bioenergy, bioplastics, eco-friendly insulation materials, and industrial biomass applications.	High establishment costs and volatile biomass markets.	[107,108,109]
Camelina (Camelina sativa L.)	Low-input crop; short cycle; suited to marginal soils.	Limited competitive ability against heavy weed infestations.	Climate-smart crop rotations: key feedstock for biofuels and sustainable aviation fuels (SAF).	Underdeveloped, dedicated commercial supply chains and crushing infrastructure.	[110,111,112]
Sweet potato (Ipomoea batatas L.)	Heat-tolerant; benefits from warming climates.	Frost sensitive; requires stable soil moisture.	Expanding nutritional and consumer markets.	Regionally limited and dependent on frost-free periods, cultivar selection, and storage infrastructure.	[113,114]
Drought-tolerant grapes & Mediterranean horticulture crops (Figs, almonds, etc.)	Heat- and drought-adapted; expanding production zones.	Spring frost risk; high transition costs.	High-value viticulture and specialty crops.	Requires restructured post-harvest, irrigation, and pest systems.	[115,116]

summarizes the key comparative features of traditional and emerging crops relevant to climate adaptation strategies in the region.

While many studies identify drought-tolerant crops as promising alternatives, evidence remains less consistent regarding the long-term economic sustainability of European diversification strategies. Agronomic experiments generally report favorable physiological responses, whereas farm-level analyses often identify significant barriers related to market access, processing infrastructure, and investment costs. Consequently, successful diversification cannot be evaluated solely by biological performance but requires simultaneous consideration of technological, economic, and institutional feasibility.

4.2. Genetic and Breeding Approaches

The successful adaptation of agricultural systems to Central European climate change will depend heavily on advances in plant breeding, genetic resources management, and seed system resilience [117].

Breeding programs increasingly focus on traits such as drought tolerance, heat resistance, salinity tolerance, pest resistance, and water-use efficiency. Modern genomic tools enable a more precise selection of adaptive traits that maintain productivity under climatic stress [117].

Genome-editing technologies such as CRISPR-Cas systems offer significant potential to accelerate climate adaptation by enabling targeted modifications of stress-response genes. Applications include improving drought tolerance, enhancing disease resistance, and increasing nutrient-use efficiency [118]. However, regulatory uncertainty within the European Union continues to influence the commercial adoption of genome-edited crops [119].

Traditional landraces represent valuable reservoirs of genetic diversity and local adaptation. Many landraces possess stress-tolerance traits that may become increasingly important under climate change. Their preservation and integration into breeding programs constitute important adaptation strategies [120].

Neglected and underutilized species are increasingly recognized for their potential contribution to climate-resilient agriculture. Such species often exhibit strong tolerance to environmental stress while contributing to nutritional diversity and agroecological resilience [121].

Climate adaptation also raises important questions regarding seed sovereignty and access to genetic resources. Dependence on highly concentrated commercial seed markets may reduce adaptive flexibility and farmer autonomy. Consequently, preserving local seed systems, participatory breeding approaches, and open-access genetic resources may become increasingly important for long-term agricultural resilience [122].

Although advances in breeding technologies substantially expand adaptive potential, genetic improvement alone cannot guarantee climate resilience. Improved cultivars remain dependent on suitable agronomic management, functioning seed systems, farmer acceptance, and supportive regulatory environments. Consequently, technological innovation should be viewed as an enabling component within broader agricultural transformation rather than an independent solution to climate-related challenges.

However, the successful integration of these emerging climate-resilient crops cannot end with harvest. The transition toward diversified agricultural systems introduces critical bottlenecks downstream, as existing post-harvest infrastructure in Central Europe remains predominantly optimized for conventional monocultures like wheat and maize. Consequently, substituting traditional grains with crops like sorghum or integrating novel legumes requires profound, capital-intensive technological adaptations in storage environments, milling systems, and industrial processing capacities.

5. Post-Harvest Systems, Storage, and Processing

Climate change is expected to significantly influence storage stability, processing efficiency, infrastructure durability, energy demand, and supply chain reliability throughout Central Europe [123]. Simultaneously, diversification toward alternative crops introduces technological challenges because many emerging species require different storage conditions, processing technologies, and industrial infrastructures than conventional cereals and oilseed crops.

At the same time, the transformation of post-harvest systems also creates opportunities for the development of circular bioeconomy models, low-carbon processing systems, and integrated biomass utilization pathways in the region [124,125,126]. Consequently, storage and processing systems represent both vulnerability and strategic leverage point within climate-resilient agricultural transitions.

The literature reviewed here consistently indicates that downstream food-system components remain underrepresented within European-focused climate adaptation research despite their central importance for overall system resilience. This imbalance partly reflects the historical separation between agronomic and food-engineering disciplines. Consequently, a major contribution of future research will be integrating production- and post-harvest perspectives within unified food-system analyses.

5.1. Climate-Related Storage System Challenges

Post-harvest storage systems are highly sensitive to climatic conditions because temperature, humidity, ventilation, and biological activity strongly influence food quality, shelf life, and the risk of contamination [127,128]. Climate change is expected to substantially increase vulnerabilities across agricultural supply chains in Central Europe, thereby creating several interrelated storage-related aspects to address.

5.1.1. Grain Storage and Environmental Control

Grain storage systems are increasingly vulnerable to climate change due to rising temperatures, humidity variability, and associated biological risks experienced in the region. Cereals and oilseeds continue to respire after harvest, generating heat and moisture that can accelerate spoilage, insect infestation, and microbial growth under warmer conditions [129]. Elevated temperatures reduce grain quality and seed viability while creating favorable environments for pests and fungal pathogens [130]. Heatwaves further increase risks by overwhelming passive storage systems and promoting moisture migration and internal condensation within silos, leading to localized spoilage hotspots [131,132].

Humidity management is equally critical. Increased atmospheric moisture variability and more frequent extreme precipitation events complicate drying operations and increase storage instability [133]. Condensation and uneven moisture distribution can stimulate fungal colonization even when average moisture levels remain acceptable. As a result, drying and ventilation requirements may become increasingly energy-intensive, particularly for high-moisture crops such as maize harvested during humid autumn conditions [134].

Climate-sensitive fungal growth represents a highly significant post-harvest food safety concern. Species of Aspergillus, Fusarium, and Penicillium may proliferate under warmer and wetter storage conditions, increasing the risk of mycotoxin contamination [135]. Future warming may also facilitate the northward expansion of aflatoxin-producing Aspergillus flavus, creating new food safety challenges across Central Europe [136].

5.1.2. Cold-Chain Vulnerability and Energy Demand

Cold-chain systems play a critical role in preserving fruits, vegetables, dairy products, meat, pharmaceuticals, and processed foods in the Central European context. However, climate change is expected to increase both their vulnerability and operational costs [137]. Rising ambient temperatures increase cooling requirements throughout refrigerated storage and transport networks, leading to higher electricity demand, operating expenses, and greenhouse gas emissions [138].

Heatwaves pose particular challenges because refrigeration systems operate less efficiently under extreme temperatures while simultaneously facing peak energy demand. Where electricity supply is disrupted or constrained, cooling failures can result in rapid spoilage of highly perishable commodities [139]. Consequently, climate change may increase both direct food losses and indirect economic costs associated with quality deterioration, logistics disruptions, insurance claims, and food safety incidents [140].

5.1.3. Infrastructure Resilience and Smart Storage Technologies

Agricultural storage infrastructure is increasingly exposed to floods, storms, heatwaves, and freeze–thaw cycles based on the afore climatic characteristics of the region. Such events may damage facilities, contaminate stored commodities, disrupt transportation networks, and compromise silo integrity. Enhancing infrastructure resilience, therefore, represents a critical adaptation priority.

Future climate-resilient storage systems will likely require improved insulation, automated ventilation, humidity-control technologies, flood-protection measures, decentralized storage capacity, and real-time monitoring systems. Digital technologies capable of continuously tracking temperature, humidity, gas composition, and biological activity can improve early detection of spoilage risks while optimizing storage performance and energy efficiency [123].

Existing studies broadly agree that storage resilience will become increasingly important under future climatic conditions. Nevertheless, comparatively few investigations evaluate the economic trade-offs associated with investments in advanced storage technologies, particularly for small and medium-sized farms. Closing this knowledge gap represents an important priority for future adaptation research.

5.2. Processing Challenges

The diversification of agricultural production systems toward alternative and climate-resilient crops creates substantial challenges for food and industrial processing sectors. Most processing infrastructure in Central Europe was developed around a relatively narrow range of dominant crops, such as wheat, maize, barley, sunflower, and rapeseed. Emerging crops often possess different biochemical characteristics, physical properties, storage behavior, and technological requirements that existing processing systems may not be optimized to handle. Consequently, successful crop diversification depends not only on agronomic feasibility but also on the adaptability of industrial systems and value chains. Figure 4 summarizes the key technological and organizational adjustments discussed in this sub-section and illustrates how climate-driven crop variability translates into specific processing-system adaptation requirements.

The quantitative evidence summarized in

Table 5. Representative quantitative evidence supporting processing-system adaptation for climate-resilient crop diversification.

Processing Domain	Representative Quantitative Findings	Practical Implication	Representative References
Grain drying	Reducing grain moisture from approximately 20–25% to 12–14% substantially decreases fungal growth and enables long-term storage.	Greater post-harvest stability under more variable harvest conditions.	[141,142]
Protein extraction	Modern wet fractionation typically achieves 70–90% protein purity, depending on crop species and process configuration.	Higher-value utilization of legumes and alternative protein crops.	[143,144]
Post-harvest storage losses	Improved storage systems and good post-harvest management can reduce quantitative cereal losses from approximately 10–20% under traditional storage conditions to below 5% in well-managed storage systems.	Reduced food losses and greater food-system resilience.	[142,145]
Feed conversion	Enzyme supplementation may improve feed conversion efficiency by approximately 5–15% in diets containing alternative feed ingredients.	Greater flexibility for diversified livestock feeding systems.	[146,147]
Flexible processing systems	Multi-crop processing facilities generally require higher initial investment but increase operational flexibility and reduce dependence on single-crop supply chains.	Improved resilience against climate-induced variability.	[148,149]

demonstrates that successful crop diversification requires measurable adaptation throughout the processing chain. Improvements in drying efficiency, storage performance, protein recovery, feed conversion, and processing flexibility provide empirical support for the conceptual relationships illustrated in Figure 4 and highlight that technological adaptation is an essential complement to agronomic diversification.

5.2.1. Modified Milling Systems

Alternative cereals and pseudocereals, such as millet, sorghum, quinoa, and amaranth, require adapted milling technologies due to differences in grain size, hardness, starch composition, and bran structure [150]. Conventional wheat-based Central European systems often cannot efficiently process these crops without technological modification. Sorghum, for example, has a harder endosperm and a distinctive tannin profile that affects milling performance and product quality, while quinoa requires dehulling and saponin removal before consumption. Millet processing frequently involves additional cleaning and polishing stages to improve consumer acceptance and storage stability [151]. As a result, diversified grain systems may require investment in flexible multi-crop processing infrastructure. However, the economic feasibility of such investments remains uncertain because processing facilities often operate on narrow profit margins and depend on stable throughput. On this basis, the technical suitability of alternative crops does not necessarily translate into rapid industrial adoption, particularly in regions where processing capacity is highly specialized around conventional cereals.

5.2.2. Protein Extraction Technologies

The expansion of plant-based proteins and legume diversification is increasing demand for protein extraction and fractionation technologies. Crops such as soybean, chickpea, lentil, pea, and faba bean contain valuable protein fractions for food, feed, and industrial applications. However, producing high-quality plant proteins often requires advanced wet or dry fractionation systems, enzymatic processing, and specialized purification technologies [144]. Such infrastructure remains limited in many Central European countries, constraining the scalability of regional protein transitions. Furthermore, the economic competitiveness of domestic protein production remains highly sensitive to global commodity markets and imported soybean products. Consequently, increased processing capacity alone may be insufficient unless accompanied by supportive market conditions and long-term policy incentives [143,152]. At the same time, climate adaptation and protein diversification are increasingly interconnected through European efforts to reduce dependence on imported soybean products and strengthen domestic protein self-sufficiency.

5.2.3. Fermentation Adaptation

Climate-resilient crop diversification may also require adaptation of the region’s fermentation systems used in food, beverage, feed, and bio-industrial sectors. Alternative grains and legumes possess different carbohydrate structures, starch digestibility, and microbial interactions than conventional crops [153]. Fermentation processes for bread, beer, dairy alternatives, and bioproducts may require reformulation and microbial optimization. Gluten-free grains such as sorghum and millet exhibit different fermentation dynamics than wheat, affecting dough rheology, texture, and product stability [154]. Similarly, bioethanol and biogas systems may require adaptation when integrating biomass feedstocks with different lignocellulosic compositions and conversion efficiencies [155].

5.2.4. Feed Conversion Technologies

Livestock systems are also influenced by crop diversification because feed crops differ in digestibility, protein quality, fiber composition, and antinutritional compounds. Thus, integrating novel feed ingredients requires modified feed conversion technologies, enzyme supplementation, and reformulated nutritional strategies [147,156]. In Central Europe, sorghum, for example, may partially replace maize under drought conditions, although tannin content and digestibility can affect feed efficiency. Likewise, legume-based feed systems may improve protein self-sufficiency while altering amino acid balance and formulation requirements [157].

5.2.5. Industrial Adaptability

Industrial adaptability is a major determinant of successful agricultural transformation under climate change in Central Europe. Processing industries are characterized by high capital intensity, technological specialization, and long infrastructure lifespans, making rapid adaptation economically and institutionally difficult [158]. Industries optimized for large-scale monocultural supply chains may struggle to integrate the more heterogeneous and regionally variable feedstocks associated with diversified agriculture. Flexible systems capable of handling multiple crops and fluctuating supply volumes become highly important under climate uncertainty [148].

5.2.6. Economic Feasibility

The economic feasibility of processing adaptation depends on infrastructure costs, market demand, technological maturity, and policy incentives, making this a key challenge for Central Europe. Climate-resilient crops often face an economic disadvantage because of underdeveloped supply chains, limited economies of scale, and insufficient processing capacity [159]. Public investment, innovation funding, and regional development policies play essential roles in supporting industrial adaptation and reducing transition barriers [160]. Without adequate economic support mechanisms, diversification remains constrained despite agronomic and climatic advantages.

5.2.7. Infrastructure Gaps

Infrastructure gaps remain a major challenge across Central Europe. Many regions lack sufficient drying facilities, protein extraction plants, biomass processing systems, decentralized storage infrastructure, and specialized transport logistics needed for diversified agricultural systems. Addressing these gaps will require coordinated investment strategies integrating agriculture, energy systems, food industries, transportation networks, and regional development policies [161,162].

6. Food Safety Implications

Climate-induced changes in agricultural production systems are expected to have profound implications for both food security and food safety across Central Europe. As crop suitability patterns shift and climatic variability intensifies, the stability of regional food systems may become increasingly vulnerable to production disruptions, supply chain instability, biological contamination, and nutritional imbalances. Importantly, climate change affects not only the quantity of food produced but also the safety, quality, accessibility, and nutritional composition of food commodities throughout the value chain. Thus, adaptive crop diversification must be evaluated not only from an agronomic perspective but also within the broader context of resilient and safe food systems [45,163,164].

Most available evidence concerning food safety focuses on individual hazards such as mycotoxins, pathogens, or invasive pests. Comparatively fewer studies examine how these biological risks interact simultaneously with storage conditions, supply-chain disruptions, consumer behavior, and climate variability, especially in this focus region. More integrated risk assessments would therefore improve understanding of cumulative climate impacts across food systems.

6.1. Food Safety Risks

Climate change is expected to significantly increase food safety risks throughout agricultural and food supply systems in Central Europe. Rising temperatures, altered humidity patterns, and extreme weather events create favorable conditions for microbial proliferation, fungal contamination, storage deterioration, and pest expansion. Food safety risks are increasingly interconnected with crop stress, post-harvest management, storage infrastructure, and biological invasions, highlighting the need for integrated adaptation strategies across agricultural and food systems.

Table 6. Major climate-sensitive contamination risks in agriculture relevant to Central Europe.

Agent/Issue	Main Source	Climate Drivers	Main Affected Commodities	Key Risks & Impacts	References
Mycotoxins (MT)–General	Various fungal species (see the next four rows)	Rising temperatures, humidity shifts, and extreme weather	Cereals, feed crops, stored products	Human and animal health risks; trade and food-system instability	[165,166]
MT–Aflatoxins	Aspergillus flavus and related species	Heat stress, drought, and warming climates	Mainly maize	Carcinogenic contamination; northward expansion in Europe	[66,167,168]
MT–Fumonisins	Fusarium verticillioides, F. proliferatum	Climatic variability, drought, and elevated temperatures	Maize	Human and livestock health risks; shifting geographic distribution	[169,170]
MT–Deoxynivalenol (DON)	Fusarium graminearum	Humid flowering conditions; altered precipitation	Wheat, barley	Increased cereal contamination and seasonal variability	[171,172]
MT–Ochratoxins	Aspergillus and Penicillium spp.	Rising temperatures, poor storage conditions	Cereals, grapes, coffee, and stored commodities	Food-chain contamination during storage and transport	[173,174]
Storage & transport contamination	Various fungi and storage pests	Humidity fluctuations, inadequate cooling, and ventilation	Stored grains and processed foods	Accelerated fungal growth and contamination	[175,176]
Storage deterioration	Fungi, insects, storage pests	Moisture accumulation, condensation, and warming climates	Stored grains and processed products	Reduced shelf life and higher contamination risks	[177,178]
Pesticide residue pattern changes	Pesticides	Increased pest pressure and altered degradation dynamics	Crops and food products	Increased pesticide use and residue persistence	[179,180]
Pathogen and pest expansion	Invasive insects, pathogens, and fungal agents	Rising temperatures, milder winters	Field and stored crops	Increased biological risks and crop damage	[65,85]
Secondary contamination risks	Fungal pathogens linked to pest damage	Altered ecological interactions	Crops and stored products	Increased fungal infection and storage deterioration	[85]

summarizes the major climate-sensitive contamination risks relevant to Central Europe.

6.2. Regulatory Implications

Although climate change is generally expected to increase contamination risks, substantial uncertainty remains regarding the magnitude and geographic distribution of future food-safety impacts in Central Europe. Interactions among climatic conditions, crop management practices, cultivar selection, storage technologies, and regulatory responses may produce highly variable outcomes across regions and production systems. Consequently, predictive risk assessments should be interpreted cautiously and continuously updated as new evidence emerges.

6.2.1. European Food Safety Authority (EFSA)

The European Food Safety Authority plays a central role in evaluating emerging food safety risks associated with climate change, including mycotoxins, pesticide residues, biological hazards, and novel food systems. EFSA increasingly incorporates climate-related risk assessments into food safety monitoring and scientific advisory activities [181].

6.2.2. EU Food Safety Regulations

European Union food safety legislation is based on the precautionary principle and integrated “farm-to-fork” approaches aimed at ensuring traceability and risk management throughout food supply chains. Climate change may require substantial adaptation of existing regulatory frameworks due to the emergence of novel contaminants, altered pathogen dynamics, and changing agricultural practices [182].

Beyond food safety regulations, broader European sustainability governance frameworks are also becoming increasingly relevant for agricultural adaptation. The EU Taxonomy for Sustainable Activities may significantly influence future investment flows toward climate-resilient agricultural infrastructure, precision agriculture technologies, low-emission production systems, water-efficient irrigation, storage modernization, and circular bioeconomy initiatives [183,184]. Consequently, climate adaptation strategies in Central European agriculture may increasingly depend not only on agronomic feasibility but also on alignment with sustainable finance criteria and ESG-oriented investment mechanisms. Regulatory systems governing mycotoxins, pesticide residues, contaminants, and food hygiene, therefore, require continuous revision to address evolving climatic conditions and agricultural transitions.

6.2.3. Residue Limits

Maximum residue limits (MRLs) for pesticides and contaminants are likely to become increasingly important as climatic conditions change. Altered pest pressures and intensified pesticide applications may increase the occurrence of residues and complicate monitoring. Simultaneously, climate-induced changes in crop physiology and metabolism may influence residue accumulation patterns [185].

6.2.4. Traceability

Climate-sensitive food systems in Central Europe require increasingly sophisticated traceability systems capable of monitoring contamination risks across geographically dynamic and diversified supply chains. Digital agriculture, blockchain systems, remote sensing, and real-time monitoring technologies may become increasingly important for ensuring food safety and regulatory compliance under climate change conditions [186].

Given the cascading risks—from field-level heat stress to post-harvest mycotoxin contamination—adaptive diversification demands significant technical and infrastructural transformation. Nevertheless, the pace of this agricultural transition is mainly dictated by the producers themselves. Despite the clear agronomic and ecological imperatives, the widespread adoption of alternative crops is frequently hindered by profound socioeconomic realities. Factors such as profound risk aversion, the incompatibility of existing machinery, and highly volatile market dynamics for emerging crops create substantial barriers to implementation at the farm level.

7. Implication Constraints

7.1. Policy Implementation Challenges and Digital Transformation

The socioeconomic constraints discussed above reveal important limitations of current European agricultural policy frameworks. Although the Common Agricultural Policy (CAP), the European Green Deal, the Farm to Fork Strategy, and the EU Biodiversity Strategy provide an ambitious vision for climate-resilient agriculture, effective implementation depends on farmers’ capacity and willingness to translate policy objectives into practical decisions. Therefore, adaptation should be understood not only as a regulatory challenge but as a complex socioeconomic transition requiring coordinated action among policymakers, advisory services, researchers, financial institutions, supply-chain actors, and farmers.

A major implementation challenge is the mismatch between short-term costs and long-term benefits. Investments in crop diversification, precision irrigation, digital technologies, infrastructure, and alternative value chains often require substantial initial capital, while environmental and economic benefits emerge gradually. Under conditions of market volatility, rising production costs, and climatic uncertainty, farmers may prioritize immediate financial stability over long-term resilience. Consequently, successful adaptation policies require effective financial incentives, climate-risk management tools, advisory support, and mechanisms that reduce transition risks [187,188].

Implementation is further complicated by institutional fragmentation. Climate adaptation, biodiversity conservation, water management, food safety, rural development, and agricultural competitiveness are often addressed through separate policy instruments despite their close interconnections. This fragmentation may reduce policy coherence and create conflicting incentives. The integrated resilience framework proposed in this review therefore emphasizes a systems-based governance approach linking climate adaptation, crop diversification, infrastructure development, and rural development within a coordinated policy framework.

Digital transformation is another key factor supporting agricultural adaptation. Advances in precision agriculture, remote sensing, Internet of Things (IoT) sensors, unmanned aerial vehicles (UAVs), variable-rate technologies, and artificial intelligence enable improved monitoring of soil conditions, crop performance, water availability, and climatic risks. These tools enhance input efficiency, early stress detection, and adaptive decision-making [189,190]. Machine learning applications increasingly support yield prediction, disease forecasting, irrigation management, and crop suitability assessments, while generative AI may improve knowledge transfer and decision support.

However, digital technologies should be considered enabling tools rather than substitutes for agronomic adaptation. Their wider adoption remains constrained by unequal digital infrastructure, limited data interoperability, cybersecurity risks, investment requirements, and differences in farmers’ digital skills. These challenges are particularly relevant for small and medium-sized farms, which represent a large share of Central European agriculture. Future policies should therefore combine climate-resilient farming practices with investments in digital infrastructure, advisory services, training, and rural connectivity to strengthen the long-term resilience of food systems.

7.2. Socioeconomic and Farmer-Level Limitations

The successful implementation of adaptive crop diversification in Central Europe depends not only on climatic suitability and technological innovation but also on the socioeconomic capacities of farmers, rural communities, institutions, and agricultural markets. Although climate change increasingly necessitates agricultural transformation, the transition from conventional production systems to diversified, climate-resilient farming often faces substantial economic, behavioral, infrastructural, and institutional barriers [191]. Therefore, adaptation outcomes are shaped not only by environmental exposure but also by the adaptive capacity of agricultural actors and governance systems.

A complex interaction of economic incentives, risk perceptions, cultural traditions, technological access, market structures, policy frameworks, and social networks influences farmer-level decision-making. In many cases, adaptation measures that appear agronomically rational may remain economically unattractive or socially difficult to implement under real-world farming conditions. Moreover, adaptation pathways often involve trade-offs that are insufficiently addressed within the literature. Diversification may enhance long-term resilience while simultaneously increasing short-term management complexity, investment requirements, and market uncertainty, creating collateral challenge patterns for Central Europe. Consequently, adaptation strategies that appear desirable from a system-level perspective may not align with the immediate economic priorities of individual producers. Furthermore, adaptation capacity is highly uneven across farm sizes, regions, and socioeconomic groups, creating the risk of unequal climate vulnerability within agricultural systems [45].

Understanding these constraints is essential for designing effective climate adaptation policies and ensuring that adaptive diversification strategies are both technically feasible and socially implementable. The major socioeconomic and farmer-level barriers influencing adaptive diversification in Central Europe, together with their principal mechanisms, adaptation consequences, and potential mitigation pathways, are summarized in

Table 7. Major socioeconomic constraints to adaptive diversification in Central Europe.

Constraint	Main Barrier Mechanism	Adaptation Consequence	Potential Mitigation	References
Farmer risk aversion	Preference for short-term economic stability and avoidance of risky investments	Delayed adoption of alternative crops and diversification strategies	Financial incentives, climate-risk insurance, demonstration farms, transition subsidies	[192,193,194]
Knowledge gaps	Limited access to locally adapted agronomic and climate-related expertise	Inefficient implementation of diversification practices and low adaptive capacity	Strengthened extension services, farmer training, participatory research, and knowledge-sharing networks	[195,196,197]
Machinery incompatibility	Existing equipment optimized for conventional monocultures	High transition costs and technological lock-in limiting crop diversification	Machinery cooperatives, shared equipment systems, and targeted modernization support	[198,199]
Market volatility	Weak value chains, unstable demand, and volatile prices for alternative crops	Reduced economic attractiveness of diversification and investment hesitancy	Market development programs, processing infrastructure, long-term contracts, and consumer awareness campaigns	[200,201,202]
Insurance limitations	Lack of actuarial data and inadequate coverage for diversified systems	Reduced financial security and lower willingness to experiment with new crops	Climate-resilient insurance models, index-based insurance, ecosystem-service-oriented insurance schemes	[203,204]
Labor constraints	Aging rural populations, depopulation, and labor-intensive diversification systems	Limited implementation capacity for diversified and agroecological practices	Automation technologies, labor-support policies, vocational agricultural training	[205,206]
Behavioral and decision-making barriers	Adaptation decisions shaped by perceptions, beliefs, and social norms rather than purely economic logic	Resistance to innovation and uneven adaptation responses	Social learning systems, peer networks, participatory adaptation initiatives	[207,208]
Weak extension systems and knowledge transfer	Underfunded or fragmented advisory services with a limited climate adaptation focus	Slow dissemination of adaptation knowledge and limited technical support	Integrated climate-oriented extension systems, digital advisory platforms, transdisciplinary knowledge transfer	[26,209,210]
Limited cooperative structures	Insufficient collective organization for infrastructure sharing and market coordination	Reduced economies of scale and weaker resilience of diversified systems	Producer cooperatives, collective storage and marketing systems, collaborative innovation networks	[211,212,213]
Digital inequality	Unequal access to digital infrastructure, technologies, and technical literacy	Uneven adoption of precision agriculture and climate-smart technologies	Rural digital infrastructure investment, affordable digital tools, farmer digital training	[214,215,216]

.

Importantly, the reviewed socioeconomic barriers should not be interpreted as independent constraints. Rather, risk perception, infrastructure availability, market development, institutional support, and technological accessibility interact to create reinforcing feedback that either facilitate or inhibit successful adaptation. This system perspective explains why identical diversification measures often produce markedly different outcomes across regions.

8. Integrated Adaptation Pathways

8.1. A Conceptual Framework

Building upon the interconnected climatic, technological, and socio-economic dependencies discussed above, we propose an integrated climate–food system adaptation pathway for the Central European context (Figure 5).

8.2. A Multi-Level Resilience Model for Adaptive Diversification

Building on this framework, adaptive diversification in Central Europe may be conceptualized across five interconnected dimensions of resilience: ecological, technological, economic, institutional, and social (Figure 6).

These dimensions are mutually reinforcing, and weaknesses in one domain may undermine resilience in others. For example, technological innovation may fail without supportive institutions, while ecological diversification may remain economically unviable without market development and policy incentives. Adaptive diversification should be understood as a multidimensional transition process that requires integrated governance and long-term systemic transformation, rather than isolated technical adaptation measures.

This conceptual model should therefore be interpreted as a heuristic framework rather than a deterministic representation of adaptation processes. The relative importance of each resilience dimension will inevitably vary across farming systems, environmental conditions, institutional contexts, and stages of agricultural transition. Consequently, flexible implementation strategies are likely to outperform standardized policy approaches.

8.3. Toward Transformative Agricultural Resilience

The increasing severity of climate risks suggests that future agricultural resilience in Central Europe will depend less on preserving existing production systems and more on developing adaptive capacity for continuous transformation. Climate change introduces deep uncertainty regarding agroecological conditions, market dynamics, and geopolitical stability, making flexibility, diversity, learning capacity, and institutional adaptability critical resilience attributes [24,217].

Integrated adaptation pathways provide a framework for moving beyond reactive crisis management toward proactive transformation of agricultural and food systems [218]. Within this process, adaptive crop diversification is a potentially important adaptation pathway, as it may simultaneously contribute to Central Europe’s climate resilience, food security, biodiversity conservation, circular bioeconomy development, and strategic autonomy. Nevertheless, the effectiveness of diversification strategies remains highly context-dependent and influenced by local environmental conditions, market structures, institutional support, and farmer decision-making [219,220]. Ultimately, the long-term sustainability of Central European agriculture will depend on successfully integrating ecological integrity, technological innovation, economic viability, institutional coherence, and social resilience.

Although the reviewed literature supports transformative adaptation as a long-term requirement, important uncertainties remain regarding the implementation of such transitions. Existing studies differ substantially in their conceptualization of resilience, the spatial and temporal scales analyzed, and the indicators used to evaluate adaptation outcomes. While ecological studies often emphasize biodiversity, ecosystem functioning, and climate resilience, socioeconomic analyses focus primarily on farm profitability, behavioral responses, and policy effectiveness. These methodological differences partly explain why diversification is reported to generate varying economic and environmental outcomes across studies. Rather than representing contradictory evidence, these findings highlight the context-dependent nature of adaptive diversification and reinforce the need for integrated assessments that simultaneously consider ecological, technological, economic, institutional, and social dimensions of resilience.

While this framework provides a roadmap for agricultural transformation, its practical implementation remains constrained by significant knowledge gaps. Identifying these gaps is essential for guiding future research and strengthening the evidence base for climate-resilient food-system adaptation.

8.4. Ecosystem Services and Nature-Based Solutions for Climate-Resilient Agricultural Diversification

Adaptive crop diversification strengthens the resilience of agriculture not only by stabilizing crop yields but also by enhancing the ecosystem services that support the functioning of long-term agroecosystems [221]. These ecosystem functions can enhance the resilience of Central European agricultural landscapes by reducing erosion, improving soil moisture availability during dry periods, and supporting more stable production under increasingly variable climatic conditions. At the same time, landscape heterogeneity created through diversification provides habitats for pollinators, natural enemies of crop pests, and beneficial soil organisms, thereby strengthening natural pest regulation and other regulating ecosystem services [222].

Evidence from a second-order meta-analysis synthesizing 184 meta-analyses, 6741 effect sizes, and nearly 18,000 primary studies demonstrates that agricultural diversification consistently enhances multiple ecosystem services while maintaining agricultural productivity over the long term [223]. The study found substantial improvements in biodiversity, pollination, soil fertility, nutrient cycling, carbon sequestration, and long-term economic performance. In contrast, crop yields generally remained stable over time rather than increasing universally. Importantly, the benefits of diversification varied across production systems, environmental conditions, and implementation periods, with many ecosystem functions strengthening progressively over decades. These findings suggest that diversification should not be viewed as a universal solution guaranteeing immediate yield or profitability gains, but rather as a long-term investment in agroecosystem resilience whose effectiveness depends on local conditions, management practices, institutional support, knowledge transfer, and market incentives [223,224].

Within the European Union, ecosystem-based adaptation has become an increasingly important component of climate-resilient agricultural policy. The European Green Deal, the Common Agricultural Policy, the EU Biodiversity Strategy for 2030, and the Nature Restoration Regulation all promote multifunctional agricultural landscapes that simultaneously support food production, biodiversity conservation, ecosystem restoration, and climate adaptation [225]. Consequently, ecosystem services should not be regarded as secondary environmental co-benefits but as integral components of adaptive crop diversification. Enhancing soil carbon sequestration, water regulation, pollination, biological pest control, and ecological connectivity through nature-based solutions strengthens both environmental integrity and the long-term resilience of agricultural and food systems. From this perspective, climate-resilient agriculture is not merely technological adaptation but a broader ecological transformation of farming systems that can sustain agricultural production under the changing climatic conditions of Central Europe.

8.5. Critical Synthesis of Current Evidence and Remaining Uncertainties

Despite the rapid expansion of research on climate-resilient agriculture and adaptive crop diversification, the current evidence base remains heterogeneous and characterized by considerable methodological diversity, especially when considering Central Europe as a target region. While broad consensus exists that diversification generally enhances agricultural resilience, the magnitude, consistency, and persistence of these benefits vary substantially across climatic regions, production systems, crop combinations, and assessment methodologies. Consequently, many conclusions reported in the literature should be interpreted within their specific environmental and socioeconomic contexts rather than as universally applicable recommendations.

One major source of variability arises from differences in study design. Experimental field trials frequently evaluate individual agronomic interventions under controlled conditions and relatively short observation periods, whereas modelling studies typically assess long-term climate scenarios using assumptions that may not fully capture farmer behavior, market dynamics, or institutional constraints. Meta-analyses provide higher levels of evidence by synthesizing numerous studies, yet their conclusions remain influenced by publication bias, geographical representation, heterogeneous effect-size metrics, and varying experimental quality. As a result, comparisons among individual experiments, modelling exercises, and quantitative evidence syntheses should be undertaken cautiously.

The reviewed literature also reveals several areas of ongoing scientific debate. Although numerous studies report positive effects of crop diversification on ecosystem services, biodiversity, and long-term system resilience, evidence regarding short-term economic performance and yield stability remains less consistent. Some studies demonstrate immediate productivity benefits, whereas others report neutral or even temporarily negative economic outcomes during transition periods. These inconsistencies largely reflect differences in local climatic conditions, soil characteristics, farm size, market accessibility, policy incentives, and management intensity rather than fundamental contradictions regarding the value of diversification itself.

Another important uncertainty concerns the transferability of adaptation strategies across regions. Most available evidence originates from specific climatic zones or individual crop systems, making extrapolation to the heterogeneous agroecological conditions of Central Europe inherently uncertain. Similar diversification measures may therefore generate substantially different outcomes depending on regional water availability, soil properties, institutional capacity, processing infrastructure, and farmer decision-making behavior.

Collectively, the literature suggests that adaptive diversification should not be regarded as a universal solution capable of uniformly increasing resilience under all circumstances. Rather, its effectiveness depends on interactions among ecological, technological, economic, institutional, and social factors operating simultaneously across multiple spatial and temporal scales. Future research should therefore place greater emphasis on integrated, interdisciplinary investigations capable of evaluating these interactions under realistic production conditions.

9. Research Gaps and Future Directions

Despite the rapidly expanding literature on climate adaptation, agricultural resilience, and crop diversification, major scientific and methodological gaps remain regarding how Central European agricultural systems can successfully transition under increasing climatic instability [226]. While substantial progress has been made in understanding crop physiology, climate projections, soil management, and food security, integrated analyses linking production, storage, processing, food safety, market dynamics, and governance remain comparatively limited.

Several priority research areas emerge from this review. First, significant uncertainty persists regarding the long-term performance of emerging crops under combined climatic stressors, including drought, heat, pests, and soil degradation, highlighting the need for multi-year and multi-regional studies [227,228,229]. Second, the interactions between climate change, crop diversification, post-harvest systems, and food safety remain insufficiently understood, particularly regarding fungal contamination, mycotoxin risks, storage stability, and predictive monitoring approaches [30,230,231].

Important gaps also persist concerning the socioeconomic and institutional dimensions of adaptation. Farmer decision-making is shaped by risk perception, infrastructure availability, market access, policy incentives, and economic uncertainty, yet these factors remain underrepresented in adaptation research [232,233,234,235]. At the same time, emerging technologies such as digital agriculture, remote sensing, artificial intelligence, and predictive analytics offer substantial opportunities for adaptive decision-making, although questions of scalability, accessibility, and implementation remain unresolved [236,237,238]. In parallel, citizen science approaches are receiving increasing attention as complementary tools for climate adaptation research and agricultural resilience planning. By involving farmers, local communities, and other stakeholders directly in environmental monitoring, data collection, and knowledge co-production, citizen science can enhance the spatial and temporal coverage of agricultural datasets, improve local relevance, and strengthen stakeholder engagement in adaptation processes [239,240]. However, questions regarding data quality, standardization, long-term participation, and integration with formal scientific and policy frameworks require further investigation. Future research should prioritize interdisciplinary and systems-oriented approaches that integrate climatic, ecological, technological, economic, and institutional dimensions of resilience. Strengthening long-term regional datasets, food-system analyses, artificial intelligence-supported forecasting, and localized transition modelling, and participatory citizen-science monitoring networks will be essential for transforming reactive adaptation into proactive agricultural resilience.

Another recurring limitation concerns the predominance of short-term experimental research. While controlled field trials provide valuable mechanistic insights, they rarely capture the long-term ecological, economic, and behavioral processes that determine successful agricultural transformation. Longitudinal studies following diversified farming systems over multiple climatic cycles would therefore provide a considerably stronger evidence base for future policy decisions.

Although the reviewed literature provides substantial evidence supporting climate-resilient crop diversification in Central Europe, the overall strength of evidence varies among specific thematic areas. High confidence can be assigned to findings regarding regional warming trends, increasing drought frequency, and the agronomic benefits of diversification, as these conclusions are consistently supported by long-term field experiments, climate projections, and multiple independent review articles. By contrast, evidence concerning the long-term economic performance of alternative crops, governance effectiveness, large-scale implementation pathways, and emerging digital technologies remains comparatively limited and is often derived from modelling studies, case studies, or region-specific investigations. Consequently, several policy recommendations proposed in this review should be interpreted as promising strategic directions rather than universally validated solutions, highlighting the need for further empirical evaluation under diverse production systems.

10. Conclusions

Climate change is increasingly challenging the stability of conventional agricultural systems across Central Europe through rising temperatures, hydrological instability, biological pressures, and growing food safety risks. Current evidence synthesized in this review indicates that adaptation must extend beyond field-level agronomic measures towards broader food-system resilience. Adaptive crop diversification emerges as a promising pathway to strengthen resilience under future climate scenarios. Alternative crops such as sorghum, millet, quinoa, legumes, camelina, hemp, and perennial biomass species offer opportunities to enhance drought tolerance, ecological stability, biodiversity, and production flexibility. However, successful diversification depends not only on climatic suitability but also on adequate processing infrastructure, storage capacity, market development, supportive policy environments, and the integration of nature-based solutions that enhance ecosystem services and long-term agroecosystem resilience.

The evidence synthesized throughout this review demonstrates that the current knowledge base is considerably stronger for ecological and agronomic aspects of diversification than for its long-term economic, governance, and food-system implications. Considerable methodological heterogeneity persists across experimental studies, modelling approaches, and evidence syntheses, limiting direct comparison of reported outcomes. Consequently, future advances are likely to depend less on additional single-discipline studies than on interdisciplinary research integrating climatic, ecological, technological, economic, and institutional perspectives within coherent food-system frameworks.

Unlike previous review articles that have predominantly examined individual dimensions of climate adaptation, such as crop diversification, climate impacts, food safety, or agricultural governance separately, the present review adopts an explicitly interdisciplinary perspective that integrates these domains within a unified resilience framework. By synthesizing evidence from climate science, agronomy, post-harvest management, food safety, agricultural engineering, economics, and governance, the review highlights the interdependencies that determine the long-term resilience of Central European agricultural systems. This integrated perspective enables a more comprehensive understanding of adaptation pathways than discipline-specific reviews and provides a conceptual foundation for future interdisciplinary research and evidence-based policy development.

The quantitative synthesis presented throughout this review demonstrates that projected climatic changes in Central Europe are sufficiently large to substantially alter agricultural production systems during the coming decades. The convergence of increasing temperatures, declining summer precipitation, greater climatic variability, and higher frequencies of extreme weather events underscores the urgency of implementing integrated adaptation strategies that combine agronomic, technological, post-harvest, and governance-based interventions.

Overall, this review suggests that the long-term resilience and sustainability of Central European agriculture will depend on the capacity of agricultural and food systems to integrate ecological, technological, economic, and institutional adaptations within flexible, regionally responsive governance structures.