Search Results (136)

Studying sustainability in marine and coastal tourism within national parks is essential to balance visitor use with the conservation of fragile ecosystems and biodiversity. In this context, the Galápagos Archipelago is a major coastal and marine destination in Ecuador, recognized as a UNESCO World Heritage Site. The aim of this empirical study was (i) to identify the principal motivational dimensions in sustainable coastal and marine destinations; (ii) to determine which motivations significantly predict tourist satisfaction in these contexts; and (iii) to establish which motivations influence loyalty in sustainable coastal and marine destinations. The research was conducted in situ, obtaining 407 valid questionnaires. Multiple regression analysis and exploratory factor analysis were applied. The results reveal six motivational factors: learning; heritage and nature; sun and beach; sports; authentic coastal experience; novelty; and social interaction. The motivation that most strongly predicts satisfaction is heritage and nature, followed by novelty. Likewise, the motivation that most strongly predicts loyalty is heritage and nature, with additional influence from sun and beach and sports motivations. These findings provide practical guidance for the development of sustainable destination management plans and contribute to the academic literature on sustainability, satisfaction, and loyalty in coastal and marine tourism contexts. Full article

Abu Dhabi Sabkha, located along the southern margin of the Arabian Gulf, is among the most scientifically significant arid coastal systems on Earth. Submitted by the United Arab Emirates to the UNESCO World Heritage Tentative List in 2018 under natural heritage criterion (viii), the site is currently the only documented coastal sabkha where all four diagnostic sedimentary layers, lagoon mud, microbial mat, gypsum mud, and anhydrite nodules, co-occur within a single coastal setting, south of Al Dhabaya and Abu Al Abyadh Islands. This review evaluates Abu Dhabi Sabkha as a geological heritage system by synthesizing its formation processes, UNESCO significance, complete sabkha sequence, microbial and evaporite processes, climatic setting, environmental sensitivity, and conservation requirements. The site operates under a hyper-arid climatic regime with a documented warming trend of +0.43 °C per decade over 1981–2025 (NASA POWER MERRA-2), confirming that the evaporative processes sustaining its geological record are intensifying. Microbial mats facilitate dolomite mineralization via Extracellular Polymeric Substances at a scale unmatched elsewhere in the Arabian Gulf, while gypsum mud and anhydrite nodules record advanced supratidal evaporitic development. Comparative analysis with sabkha systems in Qatar, Kuwait, Saudi Arabia, and Oman confirms that no other regional coastal sabkha preserves equivalent stratigraphic completeness within a single, actively forming setting. The site faces mounting pressures from urban expansion, coastal reclamation, off-road vehicle movement, groundwater modification, and the increasing frequency of extreme rainfall events, all of which can permanently damage fragile surface structures and microbial systems. Sustainable conservation requires protection zoning, controlled access, multi-scale satellite and drone monitoring, groundwater tracking, and integration into coastal planning frameworks. Abu Dhabi Sabkha should be recognized not as marginal saline terrain, but as a globally important geoheritage system whose scientific value depends on the active preservation of biological, chemical, and physical processes operating together within an irreplaceable coastal setting. Full article

Lake Baikal is a UNESCO World Heritage Site and the largest freshwater reservoir on the planet. It is located in the center of Eurasia, in an industrially developing region—Eastern Siberia. Although a regulatory and legal framework exists, quantitative estimates of the pathways of pollutant transport from industrial sources to the lake water area remain insufficiently studied, particularly in the context of seasonal dynamics and the influence of developing industrial sectors. In the present work, a quantitative analysis of the direct atmospheric transport of pollutants from three groups of stationary sources (the Irkutsk agglomeration, the Republic of Buryatia, and the oil-and-gas production areas of Irkutsk Oblast) to the lake surface was carried out for the first time using the HYSPLIT model for the period 2005–2025. About 4.7 million forward trajectories were computed at three heights (250, 500, 1000 m AGL) for each group of sources. It was established that conditions favorable for the transport of impurities to the lake occur in more than half of the cases. However, the spatial distribution of the impact on the Baikal air basin is heterogeneous: the Irkutsk agglomeration accounts for 67.5% of the “hits” (the main contribution being to the air basin of the Southern Basin), the Republic of Buryatia 18.8% (to the Central Basin), and the oil-and-gas areas 19.9% (to the Northern Basin). On the basis of a multifactor analysis, a combined Potential Impact (PI) index was developed that makes it possible to rank regional sources by the degree of their impact on the lake ecosystem, taking into account the emission volume, the probability of delivery, the residence time, and the height of trajectory passage. The results form a scientific basis for optimizing the spatial placement of environmental monitoring networks and for preliminary zoning of environmental risk assessment over the Lake Baikal water area. Ultimately, this study contributes to the sustainable management of the Baikal Natural Territory by providing actionable insights for balancing regional industrial growth with the long-term ecological preservation of the planet’s largest freshwater reservoir. Full article

Sustainable agricultural development in natural heritage sites poses a challenge, requiring food security without compromising the conservation of ecosystems and their outstanding universal values (OUV). The Galapagos Islands, recognized as a Natural World Heritage, have problems of scarce water and arable land, compounded by anthropogenic pressures such as high population and tourism growth and dependence on food imports. The objective of this research is to evaluate the environmental impacts of implementing agricultural greenhouses in the Galapagos by applying a traditional environmental matrix alongside a UNESCO World Heritage approach, integrated with a Strengths, Weaknesses, Opportunities, and Threats (SWOT) analysis, to formulate strategies for strengthening local agriculture without compromising ecosystems. This study employed a semi-quantitative methodological approach, integrating three key aspects: (i) a baseline of agricultural information and water availability on the islands; (ii) an integrated Environmental Impact Assessment (EIA) approach to greenhouse implementation; and (iii) sustainable agricultural development and environmental impact mitigation strategies. The results of the traditional EIA and the UNESCO approach through the OUV showed negative impacts classified as insignificant to moderately significant. For the evaluated design, these impacts can be managed through the active participation of academia, the community, and government entities. However, their scalability depends on a more in-depth analysis of the potential long-term risks associated with the availability of natural resources, microplastic pollution, and the use of agrochemicals. Among the proposed strategies, the importance of monitoring water and soil quality and of agricultural and environmental education campaigns in the community was highlighted. This study presents agricultural greenhouses as well-known alternatives for food self-sufficiency, adapted to the realities of the island territory and the objectives of ecosystem conservation. The proposed methodological approach can be applied in protected areas to promote conservation and sustainable agricultural production. Full article

Archaeological feature detection at complex, mixed-environment sites requires accurate, efficient methods for identifying subtle morphological signatures. This study presents a semi-automated remote sensing pipeline for the detection and delineation of archaeological earthworks at Cahokia Mounds (Illinois, USA), a major Mississippian urban center and UNESCO World Heritage Site. Three LiDAR datasets, two collected via UAV-mounted sensors and one from a piloted aircraft survey, were processed into Digital Terrain Models and transformed into Local Relief Models (LRM). K-means clustering was applied to segment the LRMs into feature classes, followed by contour bounding using the OpenCV library to outline mounds and borrow pits. Additionally, SAR-derived Local Incidence Angle (LIA) rasters from PALSAR-3 and Sentinel-1 were processed through angular deviation mapping to identify slope anomalies associated with archaeological features. Results across all five datasets demonstrate the complementary strengths of LiDAR and SAR: LiDAR excels at resolving elevation-defined features such as mound footprints, while LIA captures directional slope behavior that highlights mound edges, borrow pit rims, and linear features such as causeways. Comparative analysis of LiDAR acquisition frequencies reveals minimal differences in archaeological feature recovery between pulse settings, suggesting that sensor platform choice matters more than power-density tradeoffs for this application. Despite the need for human review to filter modern disturbances and natural false positives, the integrated workflow meaningfully accelerates prospection and reduces interpretive subjectivity. The methods are scalable, site-invariant, and work with open-access data, making them applicable to archaeological landscapes worldwide. Full article

Abandoned pastoral settlements can create disturbed and nutrient-enriched microsites that favor the dominance of native expansive plant species. Yet limited empirical evidence exists on how abandoned Maasai bomas influence the spread of Urtica massaica and associated plant community changes in the Ngorongoro Conservation Area, a UNESCO World Heritage Site in Tanzania. This study assessed the influence of abandoned bomas on plant species abundance, richness, diversity, soil seedbank status, and the spatial distribution of U. massaica. A multistage stratified random sampling design was used, whereby Ngorongoro and Nainokanoka zones were selected from the designated management zones of the conservation area. Vegetation data, soil samples, and geographic coordinates of abandoned bomas were collected from abandoned boma sites and adjacent control sites. Plant species abundance, richness, and diversity were compared between abandoned bomas and control sites after testing data normality using the Shapiro–Wilk test. Independent-sample t-tests were used for normally distributed data, while Wilcoxon rank-sum tests were used for non-normally distributed data. Spatial distribution of U. massaica was assessed using GIS-based heatmap and kernel density estimation. Results showed that native plant species abundance was significantly higher in control sites than in abandoned bomas. Plant species richness and diversity also differed significantly between sites in both Ngorongoro and Nainokanoka, with control sites supporting higher richness and diversity. However, soil seedbank results showed no significant differences in species richness and diversity between soils collected from abandoned bomas and control sites, although slightly higher values were observed in control soils. Spatial analysis revealed that U. massaica hotspots were concentrated mainly in highland areas with high densities of abandoned bomas. These findings suggest that abandoned bomas may act as focal points for U. massaica establishment and dominance, reducing aboveground plant diversity while retaining some potential for natural regeneration through the soil seedbank. Management interventions should prioritize abandoned bomas as key sites for controlling U. massaica spread and supporting vegetation recovery in the Ngorongoro Conservation Area. Full article

Cities are currently facing increasing challenges related to climate change, demographic pressure, and urban expansion. In this context, urban resilience has emerged as a strategic approach to anticipate, withstand, and adapt to environmental and social disturbances. The city of Salamanca, a UNESCO World Heritage Site, has implemented several green infrastructure strategies and climate adaptation initiatives, including the Integrated Sustainable Urban Development Strategy (EDUSI Tormes+), the Special Plan for the Protection of Green Infrastructure and Biodiversity (PEPIVB), and the programs SAVIA Red Verde Salamanca and LIFE Vía de la Plata. This study assesses the contribution of these initiatives to urban governance focused on response capacity by examining their level of implementation and the coherence among different municipal planning instruments. The analysis reveals that the municipal green infrastructure framework is explicitly planned and strategically designed with the objective to mitigate the urban heat island effect, regenerate the urban fabric, and establish structural pathways targeted to foster local biodiversity pathways. Overall, the results provide evidence that nature-based territorial management instruments can strengthen the adaptive capacity of heritage cities to climate change, offering a replicable model for other territories with similar characteristics. Full article

Research on post-COVID tourism behaviour has expanded rapidly, yet inland UNESCO World Heritage cities remain underexamined, particularly in Mediterranean contexts. This study examines whether the pandemic produced durable changes in tourist behaviour and in willingness to pay for sustainable services in Cáceres, Spain. A structured face-to-face survey was administered to 421 visitors in March 2023, after public-health restrictions had been lifted. The analysis covered self-reported behavioural change, perceived impacts on different destination types, perceived effects on local sustainability objectives and changes in willingness to pay (WTP) for sustainable services. Descriptive statistics were complemented by an exploratory binary logistic regression predicting increased WTP. Because the model includes only sociodemographic predictors and shows modest fit, it is used to describe associations rather than to predict. Reported behavioural change was limited: mean scores for crowd avoidance, health–safety preferences, shorter stays and substitution towards rural and nature tourism ranged from 1.73 to 1.91 on a five-point scale. Respondents nevertheless perceived substantial spatial effects of the pandemic, particularly on natural parks (92.6%) and rural destinations (84.1%). Most believed that the pandemic had accelerated sustainability efforts mainly through greater institutional and business awareness (54.9%). WTP proved relatively stable, with 62.7% reporting no change and 26.1% an increase. Women and respondents with university education showed higher odds of reporting increased WTP. Because constructs such as institutional trust and pro-environmental values were not measured directly, these attitudes are interpreted—rather than demonstrated—as reflecting governance-related confidence and value orientations more than lingering health concerns. This governance-and-values reading is the study’s main interpretive contribution and requires confirmation with direct measures of the underlying constructs. Full article

The importance of heritage in global development is a well-established fact, and according to UNESCO the preservation and protection of the cultural and natural heritage of the world should be among the priorities of the global community. This is necessitated by the fact that heritage has been continuously destroyed over time by war and terrorism, modernisation, urbanisation, and climate change. World Heritage sites are global treasures of unique value, and their protection requires efforts on the international scale. Countries may raise resources for maintaining and preserving their endangered World Heritage sites, and for those inscribed on the List of World Heritage in Danger they may apply for international assistance from UNESCO as well. Case studies and examples show that economic affluence and state stability considerably influence the conservation of World Heritage sites. This research investigates the correlation between national economic development and the conservation status of UNESCO World Heritage sites. By analysing data from 31 countries as homes of sites inscribed on the List of World Heritage in Danger, this study examines the relationship between GDP per capita, the volume of international assistance, and the “In Danger” status of sites, adding control factors such as the fragile state index, encompassing threats of war and internal conflicts, and extreme climate events. To the author’s best knowledge, no such comparative assessment between development level and international assistance to sites inscribed on the list has been attempted before, so this quantitative analysis is a novel approach of the outlined problem area. The findings aim to demonstrate whether the current global heritage framework effectively supports lower-income nations or if financial disparity remains the primary driver of heritage loss in the face of global climate change and political factors. The main research question is whether the socio-economic status of a nation will remain a stronger predictor of heritage survival than the actual severity of environmental threats, maintaining a “heritage divide” between the Global North and the Global South. This research concludes with recommendations for a more equitable financial model to safeguard universal values in an age of increasing uncertainty. Full article

This paper studies the sustainable integration of vernacular construction techniques and natural materials in the context of sustainable development, using Danube Delta UNESCO World Heritage site as case study. Through a comprehensive literature review, this research examines the potential of clay-based composites reinforced with plant fibres such as reed, bulrush, and hemp as environmentally responsible building materials. The methodology, based on a narrative literature review, combines bibliometric analysis with a case study approach to evaluate scientific interest in vernacular construction and to identify locally available natural resources. Results reveal increasing academic attention to sustainable vernacular architecture, highlighting clay-based composite’s favourable hygrothermal properties and the remarkable thermal insulation capabilities of vegetable fibres. The case study shows that most Danube Delta’s natural construction materials—particularly the world’s largest continuous reed vegetation—remain underutilized. The research concludes that revitalizing traditional construction methods, by integrating modern technological innovations, presents significant potential for sustainable rural development, preserving cultural heritage, enhancing regional identity, and reducing environmental impact in construction while supporting local economic growth through culturally authentic tourism. Full article

Founded in 1703, St. Petersburg was the capital of the Russian Empire. Its historic center and associated monuments are inscribed as a UNESCO World Heritage Site. Its components are classified as cultural rather than natural or mixed. We hypothesized that a part of them has an additional ecotourism value. We carried out field observations along with a review of the literature. Our results confirmed the hypothesis: many of these sites retain important elements of biodiversity that can be used for environmental education. Large congregations of birds can be observed in close proximity to Heritage monuments. Wintering bats occupy the interiors of historic fortifications, and in summer, concentrations of feeding bats can be found nearby. Seal haul-out sites have been documented on small islands near the city. The ecotourism and nature-conservation value of these Heritage landscapes is usually linked to the original logic of their selection. The best locations were chosen for palace construction—dry, scenic areas with fertile soils suitable for park creation. Proximity to bodies of water was equally important, both for aesthetic reasons and for sanitation. These same qualities also make such areas highly favorable for biodiversity. Even after centuries of development, many natural features have persisted. Full article

Climate change poses severe threats to cultural heritage, yet thermal performance impacts on traditional architecture in conflict-affected regions remain poorly quantified. This study provides one of the first comprehensive assessments of climate change effects on UNESCO World Heritage architecture in Yemen’s Old City of Sana’a. We employed building energy simulation (DesignBuilder/EnergyPlus) to evaluate the thermal performance of a representative five-story traditional adobe tower house under three climate scenarios: baseline (1974–2017), SSP2-4.5 (moderate emissions, 2041–2060), and SSP5-8.5 (high emissions, 2041–2060). Climate projections were derived from five CMIP6 models using the morphing methodology, with natural ventilation-only operation (no mechanical cooling). The results demonstrate dramatic thermal performance degradation: annual overheating hours (>30 °C) increase more than 10-fold from 111 h (baseline) to 1264 h (SSP2-4.5) on the most vulnerable floor, representing escalation from 1.3% to 14.4% of the year. Extreme heat exposure (>32 °C) emerges under climate scenarios (324–423 h annually) and is absent under baseline conditions. Thermal comfort declines 27–30 percentage points across all floors. The findings reveal the systematic failure of passive cooling mechanisms under elevated temperatures, particularly when nighttime temperatures exceed 20 °C, eliminating nocturnal heat purging opportunities. The results necessitate the urgent development of heritage-sensitive adaptation strategies for Old Sana’a and similar UNESCO sites in arid regions facing compound climate-conflict vulnerability. Full article

The Garden City concept, first presented by Howard and further developed by Patrick Geddes, was adapted in his 1925 plan for Tel Aviv, where built form and green space were conceived as interdependent elements—green-built relations. While Garden City planning has been recognised as urban heritage, how its principles are interpreted in contemporary metropolitan planning remains underexplored. This study investigates how planning documents across the Tel Aviv metropolis address the attributes of Geddes’ plan that underpin the UNESCO World Heritage inscription of the White City, and whether these attributes extend beyond the core heritage area. The research analyses strategic plans, conservation frameworks, and master plans, by means of a workshop held during the 2024 Livable Neighbourhoods in the 21st Century Garden City conference. Eighteen participants reviewed six municipal planning documents against thirty-one predefined attributes to contemporary green-built relations. Findings reveal that attributes from Geddes’ plan, which underpin to Outstanding Universal Value, extend beyond the World Heritage area but are unevenly recognised, with variation across municipalities and document types. Results demonstrate green-built relations as a useful lens for linking heritage management with metropolitan planning and for supporting Nature–Culture governance approaches. Full article

Quito, recognized as the first UNESCO World Cultural Heritage Site, holds a vast documentary legacy at constant risk of deterioration due to environmental, biological, and aging factors. Preserving these historical documents demands sustainable and non-invasive approaches. This study presents the first documented investigation in Ecuador on the use of ionizing radiation for the conservation of historical paper materials. Fifteen fragments, naturally detached from deteriorated documents housed in two major heritage repositories, the Biblioteca Nacional Eugenio Espejo and the Biblioteca Fray Ignacio de Quezada, were selected for analysis. Samples were irradiated with a Co-60 gamma source at doses of 4, 6, and 8 kGy at the “Francisco Salgado T.” Irradiation Center. To evaluate potential alterations, pre- and post-irradiation analyses were conducted using surface pH measurements, colorimetry (ΔE from CIELAB coordinates), and FTIR-ATR spectroscopy. The results showed no statistically significant changes in the analyzed parameters, suggesting that gamma irradiation at these doses does not compromise the structural or visual integrity of the paper. This work represents a pioneering step in Ecuador toward integrating scientific methods into cultural heritage preservation, supporting the safe application of ionizing radiation in the conservation of historical documents. Full article

Despite the growing recognition of heritage risk reduction, a comprehensive framework for multi-risk assessment remains notably absent within the context of historic urban landscapes (HULs) across diverse global contexts. This paper aims to fill this gap by developing an assessment framework to address multiple emerging risks in HUL management, considering climate-related, human-induced, and mixed hazards in UNESCO World Heritage properties. A four-step process is established—hazard identification, exposure categorisation, adaptation capacity-building, and vulnerability monitoring and evaluation. Using content analysis, this framework is applied to official reports from 33 World Heritage HUL cases across 33 countries. The results show that, although various hazards have been acknowledged by state parties, local governments prioritise human-induced or natural hazards more often than mixed hazards, leading to a shortage of comprehensive risk management plans and practical actions in most cases. Regarding heritage adaptation, the factors of capacity and governance are widely addressed, demonstrating the commitment of state parties to formulate strategies and solve problems. However, public participation and education practices remain insufficiently implemented, resulting in a relatively low degree of adaptation capacity-building. The proposed multi-risk assessment framework offers a crucial reference for global urban heritage management and risk reduction. Full article