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Diversity
Volume 17
Issue 6
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Diversity, Volume 17, Issue 6 (June 2025) – 68 articles

Cover Story (view full-size image): Generalized symmetries fundamental to physical theories synthesize opposing patterns (antisymmetries), similarities in processes (invariances), and exceptions (breaks). Examination of ubiquitous carotenoid pigments suggests that these symmetries also apply to biological systems. For many well-studied birds, carotenoid-based plumage reflectance typically shifts to longer, redder wavelengths as the amounts of dietary carotenoids increase. In contrast, this comparative study of plumage carotenoids in Piciformes–Coraciiformes (e.g., woodpeckers, toucans, bee-eaters) found shifts to shorter, bluer wavelengths with increased carotenoid consumption. Process invariances in carotenoid limitation and honest signaling applied broadly to both red and blue shifts but were broken for red carotenoids. These symmetries may be relevant to different color visions. View this paper
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18 pages, 534 KiB  
Article
Beyond Culture/Nature Divides: New Approaches and Tools for a Cultural Integrated Landscape Management
by Luiz Oosterbeek
Diversity 2025, 17(6), 436; https://doi.org/10.3390/d17060436 - 19 Jun 2025
Viewed by 1016
Abstract
In this article, we revisit the core concepts of nature and of landscape assessment and sustainability, based on which we propose an approach to natural resource management and diversity preservation from the perspective of cultural landscapes. We build on past and contemporary debates [...] Read more.
In this article, we revisit the core concepts of nature and of landscape assessment and sustainability, based on which we propose an approach to natural resource management and diversity preservation from the perspective of cultural landscapes. We build on past and contemporary debates on the notion of nature and its relation to “Non-Nature”, attempting to systematize the main variables of the study of past societies as a methodological framework for the analysis of contemporary contexts; this is based on bibliographic references and case studies using such methodological approaches. Landscapes are structured through human activity, which relates to the technological and logistic drivers of historical studies, and are the domain of humans (anthropic nature), as opposed to non-anthropic nature (or wilderness). Sustainable resource management, focused on the preservation of biodiversity and cultural diversity as part of it, needs to overcome the divide between nature and culture, framing debates and conflicts as part of a cultural landscape of discussions served by an established methodological framework, in which education is the main driver and museum-related structures (libraries, etc.) form the flexible institutional backbone. The introduction sets the context for the argument, revisiting some of the theoretical approaches to the notions of nature and landscapes from the late 19th century in Europe, while also referring to reflections in antiquity and traditional and indigenous understandings. A section on materials and methods explains the methodological framework and data used by the author, situating it within a systematization of the humanities’ assessment of the past. A third section explores the interplay between materialities and perceptions, including the relevance of time- and space-driven approaches that shape different perceived landscapes; it proposes a definition of cultural landscape structured through these interplays. The fourth section discusses the dimension of perceived nature as a cultural landscape and characterizes its main drivers, offering two contemporary case studies as examples. A final section of conclusions discusses the role of humanities and of structures like museums, pointing to the new UNESCO program BRIDGES as a useful tool for pursuing landscape transformations. Full article
(This article belongs to the Special Issue Landscape Science and Natural Resource Management)
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21 pages, 4914 KiB  
Article
Land Use Effects on the Space Use and Dispersal of an Apex Predator in an Ecotone Between Tropical Biodiversity Hotspots
by Bernardo Brandão Niebuhr, Sandra M. C. Cavalcanti, Ermeson A. Vilalba, Vanessa V. Alberico, João Carlos Zecchini Gebin, Danilo da Costa Santos, Ananda de Barros Barban, Raphael de Oliveira, Eliezer Gurarie and Ronaldo G. Morato
Diversity 2025, 17(6), 435; https://doi.org/10.3390/d17060435 - 19 Jun 2025
Viewed by 968
Abstract
Assessing the ranging and dispersal behavior of apex predators and its consequences for landscape connectivity is of paramount importance for understanding population and ecosystem effects of anthropogenic land use change. Here, we synthesize ranging and dispersal ecological information on pumas (Puma concolor [...] Read more.
Assessing the ranging and dispersal behavior of apex predators and its consequences for landscape connectivity is of paramount importance for understanding population and ecosystem effects of anthropogenic land use change. Here, we synthesize ranging and dispersal ecological information on pumas (Puma concolor) and present estimates of how different land uses affect the space use and dispersal of pumas on fragmented landscapes in an ecotone between biodiversity hotspots in southeastern Brazil. Additionally, we evaluate the effect of animal translocations on dispersal and movement patterns. Using location data for 14 GPS-collared pumas and land use data, we assessed when, how long, and how far individuals dispersed; how forest loss and infrastructure influenced puma home range size; and how movement patterns changed according to land use and proximity to infrastructure, during ranging and dispersal, for residents, natural dispersers, and translocated individuals. We present the first detailed record on the dispersal of pumas in Brazil and in the tropics, including long-distance dispersals, and show that pumas moved faster and more linearly during dispersal than during ranging. Their movement was slower and their home ranges were smaller in more forested areas, underscoring the importance of forest as habitat. In contrast, movement rates were higher in open pastures, mainly during dispersal. Our study underscores the scarcity of research on puma space use and dispersal in South America and reveals partial divergences in dispersal behaviors compared to North America and temperate regions, especially concerning dispersal ages. Furthermore, we give the first steps in presenting how land cover and human infrastructure affect the movement of this apex predator in a tropical ecosystem, an important subsidy for land use management. We call for more comprehensive studies on the movement ecology of carnivores combined with long-term population monitoring, to allow linking individual behavior with metapopulation dynamics and landscape connectivity and drawing more effective measures to sustain their populations. Full article
(This article belongs to the Special Issue Landscape Biodiversity)
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20 pages, 2370 KiB  
Review
Coral Reef Restoration Techniques and Management Strategies in the Caribbean and Western Atlantic: A Quantitative Literature Review
by Leah Hodges and Pamela Hallock
Diversity 2025, 17(6), 434; https://doi.org/10.3390/d17060434 - 19 Jun 2025
Viewed by 616
Abstract
A quantitative literature review of restoration techniques and supporting management strategies used throughout the Caribbean and Western Atlantic from 1998 through 2024 was compiled using references from the Web of Science to highlight those with potential for reef replenishment. From 93 sources listed, [...] Read more.
A quantitative literature review of restoration techniques and supporting management strategies used throughout the Caribbean and Western Atlantic from 1998 through 2024 was compiled using references from the Web of Science to highlight those with potential for reef replenishment. From 93 sources listed, 74 publications were relevant and categorized into subtopics based on the most prevalent restoration techniques. Roughly half the studies focused on three general topics: the benefits of restoring Acropora species, studies utilizing micro-fragmentation and fragment nurseries, and outplanting techniques. Other subtopics, each with at least three references, included optimizing substrates and artificial reefs, enhancing larval recruitment, emphasizing the role of herbivory, improving management practices, and addressing the impacts of tourism and community engagement. The information from the references was compiled to determine the overlap among categories and the ways in which techniques and management strategies might be applied simultaneously to enhance restoration outcomes. Additionally, sources were analyzed according to time and location of publication to better visualize the emergence of this area of research and restoration efforts. An increase in publications was observed from 2014 to 2024, associated with the rise in major events impacting coral reefs. The major locations for published research were the Florida reef tract and Puerto Rico, though restoration studies were also reported from the Bahamas and sites around the Caribbean. Criteria to assess the success of techniques included coral survival, recruitment, coral coverage, habitat structure and complexity, and biomass of marine life, including fish and invertebrates that inhabited a restored reef. Most restoration efforts utilized either fragmentation or assisted sexual breeding, followed by cultivation in nurseries or labs. Outplanting success depended on fragment size, attachment style, and site selection, with less-intrusive techniques and intermediate planting densities promoting survival. Tools like GAO maps can guide site selection based on herbivore presence and algal coverage. Monitoring is critical to ensuring coral survival, especially after the first year of outplanting, while community involvement can foster public engagement in reef conservation. Full article
(This article belongs to the Special Issue Ecology and Paleoecology of Atlantic and Caribbean Coral Reefs)
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6 pages, 1672 KiB  
Interesting Images
New Insular Record of the Giant Water Bug, Lethocerus patruelis (Hemiptera: Belostomatidae), from the Northeastern Aegean
by Giorgos Stavrianakis, Asimina Koukoura, Apostolos Christopoulos and Yiannis G. Zevgolis
Diversity 2025, 17(6), 433; https://doi.org/10.3390/d17060433 - 19 Jun 2025
Viewed by 731
Abstract
Lethocerus patruelis (Stål, 1854) is a large aquatic hemipteran and the only European representative of the family Belostomatidae. Commonly known as the giant water bug, this species was historically restricted to the Balkans, Anatolia, and parts of the Middle East, but has exhibited [...] Read more.
Lethocerus patruelis (Stål, 1854) is a large aquatic hemipteran and the only European representative of the family Belostomatidae. Commonly known as the giant water bug, this species was historically restricted to the Balkans, Anatolia, and parts of the Middle East, but has exhibited a marked westward and northward range expansion in recent decades. In this study, we report the first confirmed occurrence of L. patruelis on Lesvos Island, in the northeastern Aegean Sea, based on a direct observation made within a wastewater treatment facility. The individual was identified in situ using diagnostic morphological traits and photographed without disturbance. This finding extends the known insular distribution of the species and underscores its capacity to exploit anthropogenically modified aquatic systems. Given the island’s rich mosaic of natural and artificial wetland habitats—including over 200 mapped sites—Lesvos may offer suitable conditions for the establishment of local populations. This record highlights the need for targeted surveys and long-term monitoring across under-sampled insular landscapes. Full article
(This article belongs to the Section Biodiversity Conservation)
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19 pages, 3442 KiB  
Article
Spatial Patterns and Functional Diversity of Nearshore and Offshore Coral-Reef Fish Communities in the South China Sea
by Chen Zhang, Simin Hu, Lintao Huang, Xianzhi Lin, Hui Huang and Sheng Liu
Diversity 2025, 17(6), 432; https://doi.org/10.3390/d17060432 - 19 Jun 2025
Viewed by 397
Abstract
Coral-reef fishes in the South China Sea play a crucial role in sustaining ecosystem stability and delivering essential ecological functions. However, widespread coral degradation has led to habitat loss, intensifying environmental stress on reef-associated fish communities. To better understand their current status and [...] Read more.
Coral-reef fishes in the South China Sea play a crucial role in sustaining ecosystem stability and delivering essential ecological functions. However, widespread coral degradation has led to habitat loss, intensifying environmental stress on reef-associated fish communities. To better understand their current status and guide conservation efforts, this study conducted a comprehensive, trait-based assessment of coral-reef fish diversity across 19 reef sites in the South China Sea, spanning nearshore (Sanya, Hainan) and offshore (Xisha and Nansha Islands) systems. Significant spatial differences were observed in species composition, functional trait structure, and responses to environmental disturbance. Offshore reefs, particularly in the Nansha Islands, exhibited the highest species richness, trophic complexity, and functional diversity, while nearshore reefs showed simplified community structure dominated by small, sedentary species with high microhabitat dependence. Coral cover was only weakly correlated with fish diversity and failed to reflect functional trait complexity, highlighting the limitation of relying on structural indicators alone. Using community-weighted trait metrics, PCA, and indicator species analysis, this study established a tri-principle framework for identifying priority conservation species based on ecological function, rarity, and vulnerability. Key functional species—including Chlorurus sordidus, Siganus fuscescens, and Cephalopholis urodeta—were identified, along with representative conservation sites such as Meiji Reef, Lingyang Reef, and Luhuitou. These findings underscore the need to integrate species-level and functional diversity into coral reef monitoring and management. The proposed framework provides a science-based foundation for prioritizing species and habitats, enhancing the resilience of reef ecosystems under the dual threats of climate change and anthropogenic pressure. Full article
(This article belongs to the Special Issue Coral Reef Biodiversity Conservation and Ecological Rehabilitation)
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17 pages, 3781 KiB  
Article
Railway and Road Infrastructure in Saiga Antelope Range in Kazakhstan
by Nazerke Bizhanova, Alexey Grachev, Nurkuisa Rametov, Yerlik Baidavletov, Saltore Saparbayev, Maxim Bespalov, Sergey Bespalov, Indira Kumayeva, Yerzhan Toishibekov, Anna Khamchukova and Yuri Grachev
Diversity 2025, 17(6), 431; https://doi.org/10.3390/d17060431 - 19 Jun 2025
Viewed by 914
Abstract
The saiga antelope (Saiga tatarica), a keystone migratory species of the Central Asian steppes and deserts, is increasingly threatened by habitat fragmentation due to the rapidly expanding transport infrastructure in Kazakhstan, which hosts approximately 95% of the species’ global population. This [...] Read more.
The saiga antelope (Saiga tatarica), a keystone migratory species of the Central Asian steppes and deserts, is increasingly threatened by habitat fragmentation due to the rapidly expanding transport infrastructure in Kazakhstan, which hosts approximately 95% of the species’ global population. This study provides a spatial assessment of railway and road infrastructure across the contemporary ranges of the Betpaqdala, Ustyurt, and Ural saiga populations. Using the literature and our field data from the 1980s to the present day, combined with geographic information system (GIS)-based analysis of 80,427 km of roads and 4021 km of railways, we have quantified infrastructure densities and identified critical barriers to saiga migration using kernel density and minimum convex polygons (MCP) estimations. The results reveal a negative connection between infrastructure density and occurrences of saiga herds, particularly in the Ustyurt population, where a high railway density coincides with severely reduced migratory activity and a reduction in this population’s winter range by 79.84% since 2015. Major railways such as Sekseuildi–Zhezqazgan, Zhezqazgan–Zharyk, and Shalqar–Beineu intersect essential migratory pathways and have contributed to significant range contraction, subpopulation isolation, and northward shifts in seasonal habitats. In contrast, the Ural population (subject to minimal railway infrastructure interference) has shown robust demographic recovery. While roads are more widespread, their impact is less severe due to greater permeability. However, upcoming projects such as the China–Europe transit corridor and the “Center–West” regional development corridor could amplify future threats. We recommend immediately implementing wildlife-friendly infrastructure, including overpasses and ecological corridors, to preserve the connectivity of saiga ranges and support the long-term conservation of this ungulate species. Full article
(This article belongs to the Section Biodiversity Conservation)
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26 pages, 9470 KiB  
Article
Mt. Fuji in the Ocean–Description of a Strange New Species of Sea Anemone, Discoactis tritentaculata fam., gen., and sp. nov. (Cnidaria; Anthozoa; Actiniaria; Actinostoloidea) from Japan, with the Foundation of a New Family and Genus
by Takato Izumi, Kensuke Yanagi and Hisanori Kohtsuka
Diversity 2025, 17(6), 430; https://doi.org/10.3390/d17060430 - 18 Jun 2025
Viewed by 1656
Abstract
A new species in a new family and genus of sea anemone, Discoactis tritentaculata fam. gen. and sp. nov., was discovered at several localities around Japan. These anemones were indicated to belong to the superfamily Actinostoloidea by phylogenetic analyses. However, the specimens have [...] Read more.
A new species in a new family and genus of sea anemone, Discoactis tritentaculata fam. gen. and sp. nov., was discovered at several localities around Japan. These anemones were indicated to belong to the superfamily Actinostoloidea by phylogenetic analyses. However, the specimens have flat, disc-like bodies; triplet tentacles on the oral disc; endocoels without tentacles; 10 macrocnemes in the column; and numerous microcnemes only in the aboral end. These features are unique among not only Actinostoloidea but also sea anemones in general, and thus they could not be accommodated into any existing families and genera in Actinostoloidea. Therefore, we establish the new family Discoactinidae and the new genus Discoactis for this species of anemone. Our phylogenetic analyses also suggested that the family Capneidae, of which the phylogenetic position has not been certainly convinced yet, also should be a member of Actinostoloidea, and thus we revised its placement and discussed the diagnosis of the superfamily. With these results, the superfamily Actinostoloidea now accommodates eight families. Full article
(This article belongs to the Special Issue Taxonomy, Phylogeny and Biogeography of Cnidaria)
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10 pages, 671 KiB  
Brief Report
Preliminary Insights into Summer Archaeal Communities in Eutrophic Jinhae Bay, Korea
by Jae-Hyun Lim and Sang-Pil Yoon
Diversity 2025, 17(6), 429; https://doi.org/10.3390/d17060429 - 17 Jun 2025
Viewed by 330
Abstract
Marine archaea play crucial roles in global biogeochemical cycles and climate regulation, yet their ecological functions in many coastal environments remain poorly understood. Jinhae Bay (JB), a eutrophic and environmentally stressed coastal system in Korea, has attracted growing attention; however, its archaeal community [...] Read more.
Marine archaea play crucial roles in global biogeochemical cycles and climate regulation, yet their ecological functions in many coastal environments remain poorly understood. Jinhae Bay (JB), a eutrophic and environmentally stressed coastal system in Korea, has attracted growing attention; however, its archaeal community composition has not been characterized. In this preliminary study, we investigated the summer archaeal community structure in JB water columns based on a survey conducted in July 2018. We identified 5 archaeal phyla—primarily Euryarchaeota and Thaumarchaeota—along with 11 classes and 18 orders, with Nitrosopumilales and Methanobacteriales as dominant orders. Several ammonia-oxidizing archaea (AOA), including Candidatus Nitrosopumilus adriaticus, Candidatus Nitrosopumilus salaria, Candidatus Nitrosopumilus sediminis, and unclassified Nitrosopumilus spp., were detected. Additionally, the presence of methane-oxidizing archaea (MOA) such as Candidatus Methanoperedens nitroreducens, although at low relative abundance, suggests potential roles in nitrogen and methane cycling. These findings provide initial insights into the archaeal contributions to biogeochemical processes in JB, highlighting the need for further seasonal and functional investigations. Full article
(This article belongs to the Section Microbial Diversity and Culture Collections)
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18 pages, 4708 KiB  
Article
An Investigation of Plant Species Diversity, Above-Ground Biomass, and Carbon Stock: Insights from a Dry Dipterocarp Forest Case Study
by Chaiphat Plybour, Teerawong Laosuwan, Yannawut Uttaruk, Piyatida Awichin, Tanutdech Rotjanakusol, Jumpol Itsarawisut and Mehsa Singharath
Diversity 2025, 17(6), 428; https://doi.org/10.3390/d17060428 - 17 Jun 2025
Viewed by 1513
Abstract
Carbon dioxide (CO2) is a predominant greenhouse gas significantly contributing to atmospheric heat retention, primarily driven by anthropogenic activities intensifying the greenhouse effect. This study aims to evaluate the diversity of plant species, above-ground biomass (AGB), and carbon stock within a [...] Read more.
Carbon dioxide (CO2) is a predominant greenhouse gas significantly contributing to atmospheric heat retention, primarily driven by anthropogenic activities intensifying the greenhouse effect. This study aims to evaluate the diversity of plant species, above-ground biomass (AGB), and carbon stock within a dry dipterocarp forest, which is a vital local natural resource. This study presents a comprehensive evaluation of plant species diversity, AGB, and carbon stock capacity within a dry dipterocarp forest at the Nature Study Center, Mahasarakham University, located in the Kham Riang Subdistrict of Kantharawichai District, Maha Sarakham Province, spanning an area of 20.80 hectares. Ten sample plots, each measuring 40 × 40 m, were established and distributed across the study area. The diameter at breast height (DBH) and the height of the trees were meticulously recorded for all trees within these plots. Advanced statistical techniques were employed to calculate the relative dominance (RD), relative frequency (RF), and Importance Value Index (IVI), alongside a comprehensive assessment of plant species diversity. The AGB was assessed using precise allometric equations, with a focus on analyzing carbon storage within woody biomass. The findings revealed the presence of 52 tree species across 26 families within the forest. The total AGB was measured at 144.510 tons, with carbon stock reaching 67.920 tCO2. These results offer critical insights into enhancing land management strategies to optimize carbon stock, thereby playing a vital role in mitigating greenhouse gas emissions, a significant factor in climate change dynamics. Full article
(This article belongs to the Special Issue 15th Anniversary of Diversity—Biodiversity, Conservation and Ecology of Animals, Plants and Microorganisms)
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44 pages, 34279 KiB  
Article
Identification and Optimization of Urban Avian Ecological Corridors in Kunming: Framework Construction Based on Multi-Model Coupling and Multi-Scenario Simulation
by Xiaoli Zhang and Zhe Zhang
Diversity 2025, 17(6), 427; https://doi.org/10.3390/d17060427 - 17 Jun 2025
Viewed by 643
Abstract
This study employs a multi-model coupling and multi-scenario simulation approach to construct a framework for identifying and optimizing avian ecological corridors in the urban core of Kunming. The framework focuses on the ecological needs of resident birds (64.72%), woodland-dependent birds (39.87%), and low-mobility [...] Read more.
This study employs a multi-model coupling and multi-scenario simulation approach to construct a framework for identifying and optimizing avian ecological corridors in the urban core of Kunming. The framework focuses on the ecological needs of resident birds (64.72%), woodland-dependent birds (39.87%), and low-mobility birds (47.29%) to address habitat fragmentation and enhance urban biodiversity conservation. This study identifies 54 core ecological corridors, totaling 183.58 km, primarily located in forest–urban transition zones. These corridors meet the continuous habitat requirements of resident and woodland-dependent birds, providing a stable environment for species. Additionally, 55 general corridors, spanning 537.30 km, focus on facilitating short-distance movements of low-mobility birds, enhancing habitat connectivity in urban fringe areas through ecological stepping stones. Eighteen ecological pinch points (total area 5.63 km2) play a crucial role in the network. The northern pinch points, dominated by forest land, serve as vital breeding and refuge habitats for woodland-dependent and resident birds. The southern pinch points, located in wetland-forest ecotones, function as critical stopover sites for low-mobility waterbirds. Degradation of these pinch points would significantly reduce available habitat for birds. The 27 ecological barrier points (total area 89.79 km2), characterized by urban land use, severely impede the movement of woodland-dependent birds and increase the migratory energy expenditure of low-mobility birds in agricultural areas. Following optimization, resistance to resident birds in core corridors is significantly reduced, and habitat utilization by generalist species in general corridors is markedly improved. Moreover, multi-scenario optimization measures, including the addition of ecological stepping stones, barrier improvement, and pinch-point protection, have effectively increased ecological sources, met avian habitat requirements, and secured migratory pathways for waterbirds. These measures validate the scientific rationale of a multidimensional management strategy. The comprehensive framework developed in this study, integrating species needs, corridor design, and spatial optimization, provides a replicable model for avian ecological corridor construction in subtropical montane cities. Future research may incorporate bird-tracking technologies to further validate corridor efficacy and explore planning pathways for climate-adaptive corridors. Full article
(This article belongs to the Special Issue Avian Ecology and Diversity, Population Monitoring and Conservation II: Recent Advances and New Challenges)
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17 pages, 1078 KiB  
Review
Alien Stramenopilous Fungus-like Organisms (Oomycota) Diversity and Distribution in Lithuania
by Svetlana Markovskaja
Diversity 2025, 17(6), 426; https://doi.org/10.3390/d17060426 - 16 Jun 2025
Viewed by 893
Abstract
This paper provides data on non-native fungus-like organisms (Oomycota, kingdom Stramenopila), their diversity, and distribution in Lithuania and is an addition to a previously published checklist of alien true fungi (Chytridiomycota, Ascomycota, and Basidiomycota; kingdom Fungi). [...] Read more.
This paper provides data on non-native fungus-like organisms (Oomycota, kingdom Stramenopila), their diversity, and distribution in Lithuania and is an addition to a previously published checklist of alien true fungi (Chytridiomycota, Ascomycota, and Basidiomycota; kingdom Fungi). All available published data were summarized, and the analysis showed that approximately 25% of recorded Lithuania stramenopilous fungus-like organism species are alien. The compiled list represented herein includes 54 species of alien terrestrial and aquatic stramenopilous fungus-like organisms (Oomycota). Most alien Oomycota are obligate pathogens of terrestrial plants. Aquatic organisms are represented by one alien dangerous crayfish pathogen, Aphanomyces astaci, which is currently noted as extinct in Lithuania. The taxonomy of the listed alien species of Oomycota has been revised, and the species names have been adjusted to reflect current nomenclature changes. The taxonomical and ecological analysis demonstrated the prevalence of terrestrial parasitic Peronosporales reported in Lithuania Oomycota and the highest diversity of alien species belonging to the Peronospora genus. The chronology of appearance, distribution within the country, and current status of these non-native organisms were assessed, and some of the most economically or ecologically important harmful invasive species were discussed. Full article
(This article belongs to the Section Microbial Diversity and Culture Collections)
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15 pages, 2556 KiB  
Article
The Assembly Mechanisms of Arbuscular Mycorrhizal Fungi in Urban Green Spaces and Their Response to Environmental Factors
by Jianhui Guo, Yue Xin, Xueying Li, Yiming Sun, Yue Hu and Jingfei Wang
Diversity 2025, 17(6), 425; https://doi.org/10.3390/d17060425 - 16 Jun 2025
Viewed by 427
Abstract
Urban green spaces are integral components of city ecosystems, supporting essential belowground microbial communities such as arbuscular mycorrhizal fungi (AMF). Understanding how green space types influence AMF communities is key to promoting urban ecological function. This study examines AMF diversity, community assembly, and [...] Read more.
Urban green spaces are integral components of city ecosystems, supporting essential belowground microbial communities such as arbuscular mycorrhizal fungi (AMF). Understanding how green space types influence AMF communities is key to promoting urban ecological function. This study examines AMF diversity, community assembly, and co-occurrence network structures in two urban green space types—park and roadside—in Kaifeng, Henan Province, China. Soil samples were collected from both sites, and AMF community composition was assessed using high-throughput sequencing. Environmental variables, including total nitrogen (TN), available phosphorus (AP), available potassium (AK), water content, and pH, were measured to evaluate their influence on AMF communities. The results indicate marked differences between the two green space types. Park soils support significantly greater AMF species richness and more complex co-occurrence networks than roadside soils. These differences are correlated with higher nutrient levels in park soils. By contrast, AMF communities in roadside soils are more strongly associated with soil water content and pH, resulting in reduced diversity and more homogeneous community structures. Stochastic processes predominantly govern community assembly in both green space types, with roadside green spaces being more influenced by stochastic processes than park green spaces. These findings highlight the influence of urban landscape type on AMF communities and provide guidance for enhancing urban biodiversity through targeted landscape planning and soil management. In future work, we will implement long-term AMF monitoring across different green-space types and evaluate specific management practices to optimize soil health and ecosystem resilience. Full article
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14 pages, 1609 KiB  
Article
Comparative Analysis of Microtendipes Mitogenomes (Diptera: Chironomidae) and Their Phylogenetic Implications
by Chao Song, Yiyi Wang, Wenji Wang, Teng Lei, Xin Qi and Luxian Li
Diversity 2025, 17(6), 424; https://doi.org/10.3390/d17060424 - 16 Jun 2025
Viewed by 660
Abstract
Insect mitochondrial genomes are vital to understanding evolutionary relationships and identifying species. This study focused on Microtendipes (Chironomidae), a genus with unresolved phylogenetic positioning and cryptic species challenges. We sequenced and analyzed eight mitogenomes from five Microtendipes species, integrating 23 published [...] Read more.
Insect mitochondrial genomes are vital to understanding evolutionary relationships and identifying species. This study focused on Microtendipes (Chironomidae), a genus with unresolved phylogenetic positioning and cryptic species challenges. We sequenced and analyzed eight mitogenomes from five Microtendipes species, integrating 23 published Chironominae mitogenomes to reconstruct phylogenies using Maximum Likelihood and Bayesian Inference. The mitogenomes exhibited conserved gene arrangements but variable control region lengths (338–1266 bp) and high AT content (94.14–96.42% in control regions). Our results show that Microtendipes species may be a separate group within the subfamily, while also supporting the monophyly of the Harnischia, Polypedilum, and Chironomus complexes. The monophyly of Microtendipes bimaculus was weakly supported, which may demonstrate the presence of two potential cryptic species. Notably, larval morphology-based species groupings conflicted with the molecular data, suggesting that classifications derived from larval morphological traits may be unreliable. This study advances the evolutionary understanding of Chironomidae and underscores the limitations of single-gene barcodes in species-rich genera. Full article
(This article belongs to the Section Phylogeny and Evolution)
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27 pages, 5103 KiB  
Article
Attitudes to Exotic Parakeets: A Comparative Case Study and Citizen Science Review
by Ian D. Rotherham and Miles J. Watchman
Diversity 2025, 17(6), 423; https://doi.org/10.3390/d17060423 - 16 Jun 2025
Viewed by 732
Abstract
Invasive, non-native species are recognised as a global problem, and their dispersal and introduction are controversial topics. However, a source of particular interest is that of human–nature interactions and consequent perceptions of natives and non-natives, an issue complicated by misunderstandings of history and [...] Read more.
Invasive, non-native species are recognised as a global problem, and their dispersal and introduction are controversial topics. However, a source of particular interest is that of human–nature interactions and consequent perceptions of natives and non-natives, an issue complicated by misunderstandings of history and sometimes of science. Furthermore, there are only few studies on the perceptions of exotic species by people living in a region subject to invasion. The research compared local stakeholder responses to a non-native invasive bird (ring-necked parakeet Psittacula krameri Scopoli) in two areas with contrasting scenarios regarding the history of establishment, their spread, and their current status. In both locations, parakeets were considered by respondents to be attractive, but where long-established, they were also viewed as a nuisance. Desire for or tolerance of active control measures also increased in areas with a well-established population in comparison to where parakeets were still viewed as a novelty. Increased encounters between native birds and invasive parakeets influenced attitudes towards possible controls. An online survey gathered stakeholder responses, and long-term citizen science and action research were combined with data from Local Environmental Records Centres and ornithological recording groups for each region. Full article
(This article belongs to the Special Issue Birds in Temperate and Tropical Forests—2nd Edition)
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13 pages, 5333 KiB  
Brief Report
Fungal Diversity in the Dry Forest and Salt Flat Ecosystems of Reserva Ecologica Arenillas, El Oro, Ecuador
by Débora Masache, Fausto López, Ángel Benítez, Teddy Ochoa and Darío Cruz
Diversity 2025, 17(6), 422; https://doi.org/10.3390/d17060422 - 15 Jun 2025
Viewed by 619
Abstract
Fungi are a diverse and essential group that play crucial ecological roles. However, they remain understudied in tropical countries like Ecuador in terms of their forest or protected areas, particularly across diverse ecosystem zones such as seasonal forests and salt flats. This study [...] Read more.
Fungi are a diverse and essential group that play crucial ecological roles. However, they remain understudied in tropical countries like Ecuador in terms of their forest or protected areas, particularly across diverse ecosystem zones such as seasonal forests and salt flats. This study aimed to inventory fungal diversity in two specific zones: the dry forest (DF) and the salt flat (SF) within the Reserva Ecologica Arenillas (REAR), located in El Oro, Ecuador. The results recorded 162 specimens representing 47 species belonging to 34 genera, identified morphologically. Although statistically significant, the difference in species richness and abundance between the dry forest and the salt flat was minimal, with the dry forest showing slightly higher values. Nonetheless, certain species were prevalent in both ecosystems, such as Cerrena hydnoides, Pycnoporus sanguineus, Hexagonia tenuis, and Chondrostereum sp., alongside four species with resupinate habit, all of them growing on decayed wood. The Shannon and Simpson indices were calculated to assess alpha diversity, revealing higher diversity in the DF. To evaluate differences in community composition between habitats, non-metric multidimensional scaling (NMDS) and permutational analysis of variance (PERMANOVA) were applied, indicating greater species turnover and dominance of specific taxa in the DF compared to the SF. These findings highlight the importance of the fungal diversity found in the REAR while also pointing to the need for more exhaustive monitoring and comparative studies with other wild or protected areas to fully understand and conserve this biodiversity. Full article
(This article belongs to the Section Biodiversity Conservation)
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12 pages, 2315 KiB  
Article
Seed Traits and Curculio Weevil Infestation: A Study in Quercus mongolica
by Shuang Li, Li-Min Hou, Yan-Lin Guo, Meng-En Xing, Hao-Yue Li, Qing-Fan Meng and Li-Chao Feng
Diversity 2025, 17(6), 421; https://doi.org/10.3390/d17060421 - 15 Jun 2025
Viewed by 362
Abstract
Exploring host preference and resource partitioning among seed predator species is essential for understanding the coexistence mechanisms and guiding effective forest pest management. This study aimed to elucidate how seed traits influence infestation dynamics and species interactions, focusing on acorn weevils infesting Quercus [...] Read more.
Exploring host preference and resource partitioning among seed predator species is essential for understanding the coexistence mechanisms and guiding effective forest pest management. This study aimed to elucidate how seed traits influence infestation dynamics and species interactions, focusing on acorn weevils infesting Quercus mongolica. Species identification and clarification of their evolutionary relationships within the Curculio genus were performed through phylogenetic analyses of the mitochondrial cytochrome c oxidase subunit I gene sequences. The seed infestation patterns were assessed by comparing the infestation rates across various seed size classes. Furthermore, the correlations between the seed morphological traits (length, width, aspect ratio, and weight) and weevil abundance were analyzed. The phylogenetic results revealed well-supported monophyletic clades corresponding to Curculio arakawai and Curculio sikkimensis. This confirmed the clear genetic separation between these two distinct weevil species, thereby substantiating the divergence observed in weevil populations correlated with different seed hosts. The infestation patterns revealed the association of weevil species-specific preferences with seed size: C. arakawai predominantly infested larger acorn seeds, whereas C. sikkimensis predominantly infested smaller acorn seeds. C. sikkimensis favored smaller ones. Both species exhibited positive correlations between abundance and seed length and width in larger seeds; however, the seed weight displayed no significant effect. These results indicate niche differentiation mediated by seed size and morphology, which likely reduced interspecific competition and facilitated coexistence. This study elucidates species-specific host selection patterns in acorn weevils and highlights acorn traits as crucial factors shaping seed predator assemblages. The findings provide valuable insights for developing targeted pest management strategies and supporting sustainable oak forest regeneration. Full article
(This article belongs to the Special Issue Diversity, Distribution and Zoogeography of Coleoptera)
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22 pages, 2369 KiB  
Review
Satellite Remote Sensing for Monitoring Cork Oak Woodlands—A Comprehensive Literature Review
by Emma Bambagioni, Solaria Anzilotti, Costanza Borghi, Gherardo Chirici, Fabio Salbitano, Marco Marchetti and Saverio Francini
Diversity 2025, 17(6), 420; https://doi.org/10.3390/d17060420 - 14 Jun 2025
Viewed by 674
Abstract
Cork oak (Quercus suber) woodlands hold significant ecological, cultural, and economic value in the Mediterranean basin, particularly due to cork production, one of the most valued non-wood forest products worldwide. However, cork oak ecosystems are increasingly threatened by climate change, land-use [...] Read more.
Cork oak (Quercus suber) woodlands hold significant ecological, cultural, and economic value in the Mediterranean basin, particularly due to cork production, one of the most valued non-wood forest products worldwide. However, cork oak ecosystems are increasingly threatened by climate change, land-use intensification, and rural abandonment, leading to widespread signs of decline. To address these challenges, data-driven and scalable methods are more essential than ever. Satellite-based remote sensing (RS) offers a promising approach for large-scale, cost-effective, and timely monitoring of cork oak forests dynamics and health, but an exhaustive review about this topic is missing. This study reviews 35 peer-reviewed articles published between 2010 and 2025, assessing how satellite RS has been applied to monitor cork oak landscapes. The results show that key research topics include forest disturbances, land cover classification, and forest and environmental variables monitoring. Landsat is the most frequently used satellite mission, and NDVI is the most applied vegetation index. Although machine learning techniques and accuracy metrics are heterogeneous, with results that are difficult to compare, relevant performances have been achieved. For instance, the highest classification accuracy (98%) was reached in mapping cork oak mortality. However, the field remains fragmented, with limited attention to key ecological indicators such as biodiversity, resilience, and ecosystem services. RS for cork oak monitoring is still a relatively young discipline with high potential for development, requiring greater methodological consistency and stronger integration with conservation strategies to support adaptive management in the face of future environmental pressures. Full article
(This article belongs to the Section Plant Diversity)
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27 pages, 5975 KiB  
Review
A Review of Bat Fleas (Siphonaptera: Ischnopsyllidae) from Russia
by Maria V. Orlova, Alex L. Viskontene, Vyacheslav A. Korzikov, Marina V. Zabashta, Alexey V. Zabashta, Sergei V. Kruskop, Dmitriy G. Smirnov, Maria S. Malyavina, Alexandr V. Pavlov, Oleg L. Orlov, Vladimir A. Mishchenko, Ivan V. Vyalykh, Daniel I. Boyarintsev, Iliya V. Kuzminov, Ksenia Bryutova, Evgeniy A. Khizhkin, Aleksandra I. Larchanka, Oleg A. Shapkin, Elizaveta A. Vinogradova, Irina G. Dolgova and Sergei P. Sakharovadd Show full author list remove Hide full author list
Diversity 2025, 17(6), 419; https://doi.org/10.3390/d17060419 - 13 Jun 2025
Viewed by 570
Abstract
Eighteen flea species of four genera associated with bats (Chiroptera: Vespertilionidae, Rhinolophidae, Miniopteridae, Molossidae) are registered in Russia, based on a literature review as well as our own data. They are as follows: Myodopsylla trisellis, Ischnopsyllus (Ischnopsyllus) dolosus, Ischnopsyllus [...] Read more.
Eighteen flea species of four genera associated with bats (Chiroptera: Vespertilionidae, Rhinolophidae, Miniopteridae, Molossidae) are registered in Russia, based on a literature review as well as our own data. They are as follows: Myodopsylla trisellis, Ischnopsyllus (Ischnopsyllus) dolosus, Ischnopsyllus (I.) elongatus, Ischnopsyllus (I.) intermedius, Ischnopsyllus (I.) plumatus, Ischnopsyllus (I.) needhami, Ischnopsyllus (I.) obscurus, Ischnopsyllus (I.) octactenus, Ischnopsyllus (I.) simplex, Ischnopsyllus (I.) variabilis, Ischnopsyllus (Hexactenopsylla) hexactenus, Ischnopsyllus (H.) petropolitanus, Ischnopsyllus (H.) ussuriensis, Ischnopsyllus (H.) comans, Nycteridopsylla pentactena, Nycteridopsylla longiceps, Nycteridopsylla eusarca, Rhinolophopsylla unipectinata unipectinata. Ischnopsyllus (I.) elongatus and Ischnopsyllus (I.) octactenus were recorded in Kaluga Region and Vladimir Region for the first time. Ischnopsyllus (I.) variabilis in Kaluga Region is a newly documented find. Studied bat flea fauna exhibits a distinctly Western Palearctic appearance. Full article
(This article belongs to the Special Issue Taxonomy, Epidemiology, Evolution and Phylogeny of Common Ectoparasites of Vertebrates: Siphonaptera and Acari)
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25 pages, 2353 KiB  
Article
Biodiversity in Agricultural Landscapes: Inter-Scale Patterns in the Po Plain (Italy)
by Gemma Chiaffarelli and Ilda Vagge
Diversity 2025, 17(6), 418; https://doi.org/10.3390/d17060418 - 13 Jun 2025
Viewed by 296
Abstract
Agrobiodiversity decline depends on wider-scale landscape ecological traits. Studying inter-scale patterns helps in understanding context-specific farm-scale biodiversity issues and needs. In this study, we investigated the drivers of agrobiodiversity in four Po Plain sites (northern Italy), an intensively impacted agricultural district. Farm-scale floristic–vegetational [...] Read more.
Agrobiodiversity decline depends on wider-scale landscape ecological traits. Studying inter-scale patterns helps in understanding context-specific farm-scale biodiversity issues and needs. In this study, we investigated the drivers of agrobiodiversity in four Po Plain sites (northern Italy), an intensively impacted agricultural district. Farm-scale floristic–vegetational indicators reflecting anthropic disturbance (biological forms, chorological traits, and maturity traits) were studied for their relationship with species richness and phytocoenosis α-diversity values. Their correlation with local- and extra-local-scale landscape ecology traits was also studied. Species richness and α-diversity were negatively related to floristic contamination and therophytes; they tended to increase with the Eurasiatic and phanerophyte ratio, suggesting a role of disturbance conditions on diversity values. Extra-local/local scale showed similar relationships with farm-scale floristic–vegetational traits; correlation was higher for local scale. Species richness and α-diversity tended to increase with higher landscape natural components, landscape diversity, biological territorial capacity, and connectivity. These landscape traits also tended to be positively related to Eurasiatic, hemicryptophyte, chamaephyte, phanerophyte, and maturity values, while they were negatively related to adventitious, wide distribution, aliens, and therophytes. Corridors’ ecological quality apparently influenced disturbance-related species amount. Maps representing these inter-scale biodiversity facets are provided (land-use-based support ecosystem service maps integrated with landscape diversity maps). The detected patterns orient context-specific multi-scale biodiversity support. They confirm the theoretical frameworks and should be validated on wider datasets to strengthen their representativeness. Full article
(This article belongs to the Special Issue Landscape Biodiversity)
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14 pages, 682 KiB  
Article
Size and Sex Effects on Storm-Petrels’ Maximum Load-Lift at Takeoff
by Alejandra Cano-Franco, Misael Daniel Mancilla-Morales, Araceli Contreras-Rodríguez, José Juan Flores-Martínez, Zulema Gomez-Lunar and Enrico Alejandro Ruiz
Diversity 2025, 17(6), 417; https://doi.org/10.3390/d17060417 - 13 Jun 2025
Viewed by 1360
Abstract
In the Gulf of California, seabirds carry heavy loads to feed their chicks, making their takeoff capacity crucial for foraging. While some studies explore this, few consider the lift force, induced power, or aerobic vs. anaerobic performance. Moreover, the differences between individuals—such as [...] Read more.
In the Gulf of California, seabirds carry heavy loads to feed their chicks, making their takeoff capacity crucial for foraging. While some studies explore this, few consider the lift force, induced power, or aerobic vs. anaerobic performance. Moreover, the differences between individuals—such as size or sex—remain largely unexamined, leaving gaps in the understanding of seabird flight efficiency. In this work, the load capacity during takeoff of the Least Storm-Petrel (LSP) and the Black Storm-Petrel (BSP) in Isla Partida Norte, Gulf of California, was analyzed. Forty-nine individuals of the Least Storm-Petrel group and 23 of the Black Storm-Petrel group were evaluated. In both species, the carrying capacity was found to be independent of individual size, but the Least Storm-Petrel managed to take off with a higher proportion of its total mass than the Black Storm-Petrel. Although smaller, LSPs lift more than BSPs, and environmental factors like El Niño also influence seabird performance. This study found that both storm-petrel species were smaller and lighter than previously reported; yet, LSPs carried relatively heavier loads than BSPs. Although BSPs had higher absolute values for mass and lift, LSPs were more energy-efficient. The muscle mass proportions were similar and typical for takeoff. No significant sex-based differences were found. Both species used aerobic and anaerobic takeoff, with anaerobic flight likely being more efficient. Full article
(This article belongs to the Section Animal Diversity)
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15 pages, 4578 KiB  
Article
New Species and Old Semaphoronts: Updating Taxonomic Knowledge of Kempnyia Klapálek, 1914 (Plecoptera: Perlidae) with an Integrative Approach
by Lucas Henrique de Almeida, Rodrigo Braga Gastaldo, Frederico Falcão Salles and Pitágoras da Conceição Bispo
Diversity 2025, 17(6), 416; https://doi.org/10.3390/d17060416 - 13 Jun 2025
Viewed by 298
Abstract
Kempnyia Klapálek, 1914 (Plecoptera: Perlidae) is the only genus within its family endemic to Brazil, being present in the Atlantic Forest and sections of the Cerrado. Taxonomic knowledge of the genus is incomplete, especially for nymphs. An integrative approach to the description of [...] Read more.
Kempnyia Klapálek, 1914 (Plecoptera: Perlidae) is the only genus within its family endemic to Brazil, being present in the Atlantic Forest and sections of the Cerrado. Taxonomic knowledge of the genus is incomplete, especially for nymphs. An integrative approach to the description of species and semaphoronts is essential for further studies. We describe a new species of Kempnyia based on morphological and molecular data, associate and describe the nymphs of both the new species and Kempnyia umbrina Froehlich, 1988, as well as expand its distribution and correct past mistakes in identification of K. umbrina. Specimens were identified morphologically and sequenced for the barcode region of the cytochrome oxidase subunit I (COI) mitochondrial gene, resulting in eight new sequences for three species of the genus. Both morphological and molecular analyses revealed a new species, Kempnyia krenaki sp. nov. Its nymph and that of K. umbrina are also described. With our additions, the number of known Kempnyia species rises to 41, of which 26 have COI sequences available in GenBank. Although only 11 nymphs have been associated and described for the genus so far, as the Kempnyia sequence database continues to grow, studies associating and describing nymphs will become more common, gradually reducing the Haeckelian deficit. Full article
(This article belongs to the Section Animal Diversity)
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13 pages, 2272 KiB  
Review
Probable Extirpation of Anodonta vescoiana in Iraq: A Case Study of Unionid Displacement by Sinanodonta woodiana
by Murtada Naser, Amaal Yasser, Juergen Geist, Karel Douda and Franz Essl
Diversity 2025, 17(6), 415; https://doi.org/10.3390/d17060415 - 12 Jun 2025
Viewed by 333
Abstract
Conservation of ecologically important freshwater mussels is high on the international agenda, but there is only limited knowledge about the status of rare unionid species in arid and semi-arid areas which are particularly vulnerable. One such example concerns Anodonta vescoiana which was recognized [...] Read more.
Conservation of ecologically important freshwater mussels is high on the international agenda, but there is only limited knowledge about the status of rare unionid species in arid and semi-arid areas which are particularly vulnerable. One such example concerns Anodonta vescoiana which was recognized as one of the few endemic species of unionid mussels from Iraq and was restricted to the marshes of southern Mesopotamia and its connected river systems. The last confirmed report of A. vescoiana was in 2009 from the Al-Ezz River. We conducted extensive field surveys during the years 2021 and 2022 at approximately 20 freshwater sites, but we failed to observe any live or dead specimens, suggesting a probable extirpation or severe decline. In contrast, we documented the invasive Sinanodonta woodiana at numerous sites across the Tigris–Euphrates basin including the Al-Ezz River. This documentation of S. woodiana indicates successful establishment of the species and colonization of freshwater systems modified by anthropogenic practices, which include alterations of hydrological dynamics and ecological conditions. Here, we compile existing evidence of the global ecological impacts and development of S. woodiana invasion, while also highlighting Iraq as an important example of the displacement of native unionid mussel species by invasive alien unionids. We assessed the factors that contributed to the disappearance of A. vescoiana in Iraq including biological competition (with S. woodiana), salinity stress, habitat fragmentation, and pollution. The time window to act and prevent the further decline of rare unionid species in Iraq, as well as other arid and semi-arid areas which face similar threats, is short. Urgent actions include systematic monitoring to identify remnant populations, implementing biosecurity policies (for fisheries or habitats), and restoration (of habitats) to secure the long-term persistence of remaining unionid diversity. Full article
(This article belongs to the Section Biodiversity Conservation)
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21 pages, 2796 KiB  
Article
Are Painted Turtles (Chrysemys picta) Resilient to the Potential Impact of Climate Change on Vitamin D via Overgrown Floating Vegetation?
by Nicholas E. Topping and Nicole Valenzuela
Diversity 2025, 17(6), 414; https://doi.org/10.3390/d17060414 - 12 Jun 2025
Viewed by 456
Abstract
Floating aquatic vegetation and algal blooms are increasing with global warming, potentially reducing UVB exposure and, consequently, vitamin D (vit-D) synthesis in freshwater turtles. Vit-D mediates calcium metabolism and overall health, yet the effects of floating aquatic vegetation on vit-D levels remain unclear, [...] Read more.
Floating aquatic vegetation and algal blooms are increasing with global warming, potentially reducing UVB exposure and, consequently, vitamin D (vit-D) synthesis in freshwater turtles. Vit-D mediates calcium metabolism and overall health, yet the effects of floating aquatic vegetation on vit-D levels remain unclear, as is whether turtles actively avoid habitats with abundant floating vegetation. Here, we address these questions by quantifying vit-D3 levels in the blood of adult female painted turtles (Chrysemys picta) exposed to high-vegetation (darker/colder) or clear-water (lighter/warmer) treatments for one month outdoors and one month indoors at a single temperature during late summer and early fall. The observed circulating vit-D3 levels resembled those reported for other freshwater turtles, declined over time in both treatments, and were marginally lower under high vegetation after 60 days compared to clear water. However, this difference disappeared after correcting for lymph contamination and multiple comparisons, suggesting that perhaps adult females are robust to the effect of floating vegetation, but whether they were buffered by vit-D3 stores in lipids is unclear. Additionally, in subsequent years, females were exposed to habitat choice experiments and exhibited a strong preference for high floating vegetation over clear water, both as a group (outdoors) and individually (outdoors, and indoors at 21 °C and 26 °C), consistent with known benefits conferred by floating vegetation (food, predator avoidance). While no ill effects of high vegetation nor behavioral avoidance were detected here, longer experiments at different seasons on both sexes and varying ages are warranted before concluding whether painted turtles are truly resilient in their vit-D levels or if, instead, a tradeoff exists between the known benefits of floating vegetation and potential [yet unidentified] detrimental effects (lower dissolved oxygen or vit-D) when vegetation is overgrown for extended periods. Full article
(This article belongs to the Special Issue Wildlife in Natural and Altered Environments)
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17 pages, 2187 KiB  
Article
An Exploration of the Genetic Dynamics of Submerged Ceratophyllum demersum in a Freshwater Lake Under Conservation
by Qian Wang and Qian-Jin Cao
Diversity 2025, 17(6), 413; https://doi.org/10.3390/d17060413 - 11 Jun 2025
Viewed by 239
Abstract
Although the effects of human disturbance on population genetic variation in plants have been widely studied, little attention has been paid to the impact of environmental changes on genetic dynamics after the implementation of conservation measures. Previously, freshwater Caohai Lake, famous for its [...] Read more.
Although the effects of human disturbance on population genetic variation in plants have been widely studied, little attention has been paid to the impact of environmental changes on genetic dynamics after the implementation of conservation measures. Previously, freshwater Caohai Lake, famous for its abundant aquatic plants and birds, was strongly disturbed by tourism and other human activities; however, strict protective measures have been implemented since 2019. Therefore, the lake provides a suitable natural sampling ecosystem for investigating genetic variation changes following the implementation of conservation measures. Samples of cosmopolitan aquatic Ceratophyllum demersum were collected in 2019 and 2021, and they were analyzed using microsatellite primers. Our results show the presence of considerable genetic diversity in the C. demersum Caohai population. Although human disturbance decreased, the impact of natural disturbances, such as water flow and bird activities, persisted and may have increased. For C. demersum, water flow may cause vegetative propagules of different genotypes to pool in the downstream area of the lake. At sites with a very rich diversity of birds, increasing bird activities may augment the advantage of competitive clones in communities. Therefore, the continuous monitoring of the population’s genetic variation and the impact of related environmental factors is required for the efficient management of the lake ecosystem. Full article
(This article belongs to the Section Freshwater Biodiversity)
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13 pages, 1543 KiB  
Hypothesis
A Hypothesis on Suspension Feeding in Early Chelicerates (Offacolidae)
by Lorenzo Lustri, Luis Collantes, Cristiana J. P. Esteves, Robert J. O’Flynn, Farid Saleh and Yu Liu
Diversity 2025, 17(6), 412; https://doi.org/10.3390/d17060412 - 11 Jun 2025
Viewed by 581
Abstract
The Cambrian–Ordovician Plankton Revolution played a crucial role in the Great Ordovician Biodiversification Event (GOBE) or Ordovician Radiation, as a driver of diversification. The emergence of new planktonic species enhanced primary productivity and improved nutrient cycling, fueling diversification across trophic levels. In this [...] Read more.
The Cambrian–Ordovician Plankton Revolution played a crucial role in the Great Ordovician Biodiversification Event (GOBE) or Ordovician Radiation, as a driver of diversification. The emergence of new planktonic species enhanced primary productivity and improved nutrient cycling, fueling diversification across trophic levels. In this context, established plankton consumers like sponges and cnidarians thrived, and animals like euarthropods also radiated in response to these environmental conditions. Here, we hypothesize that Offacolidae, a small group of early chelicerates (the group including sea spiders, spiders, mites, and horseshoe crabs) known from the early Ordovician to the end of the Silurian, were suspension feeders that diversified within this changing ecosystem. Extant chelicerates are primarily predators or parasites, with no known cases of suspension feeding, which is also the case in extinct members. However, anatomical and environmental evidence suggest that Offacolidae may have adopted this feeding strategy. We examine the environmental conditions in which Offacolidae fossils were found, considering both biotic and abiotic factors such as paleolatitude, bathymetry, and the associated plankton community. We also assess the possible biomechanics of their unique appendages to determine their suitability for suspension feeding. Finally, comparisons with extant arthropods, such as the suspension-feeding crustaceans Limnomysis benedeni, Atya gabonensis, Subeucalanus pileatus, and the genus Emerita, provide insights into possible evolutionary analogies in their morphology, which may have served the same function. If confirmed, this hypothesis would make Offacolidae a unique case within chelicerates, illustrating how exceptional early Ordovician conditions fostered novel ecological adaptations and highlighting an interesting case of analogy between different lineages of euarthropods. Full article
(This article belongs to the Topic Problems and Hypotheses in Palaeontology)
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18 pages, 5153 KiB  
Article
Lots of Lancelets or Not? Diversity of Cephalochordates in the Tropical Eastern Pacific
by Maycol Ezequiel Madrid Concepcion, Kenneth S. Macdonald III, Amy C. Driskell, Regina Wetzer, Maikon Di Domenico and Rachel Collin
Diversity 2025, 17(6), 411; https://doi.org/10.3390/d17060411 - 10 Jun 2025
Viewed by 415
Abstract
As close relatives of the vertebrates, cephalochordates have been the focus of significant evo–devo and genomic research; however, their biodiversity and systematics remain poorly known. In particular, few species have been documented in the eastern Pacific and there are few published observations for [...] Read more.
As close relatives of the vertebrates, cephalochordates have been the focus of significant evo–devo and genomic research; however, their biodiversity and systematics remain poorly known. In particular, few species have been documented in the eastern Pacific and there are few published observations for this region. Using sequences from COI and 16S DNA barcode markers and morphological observations from 16 animals collected incidentally during other studies, we document the presence of three species of amphioxus on the Pacific coast and one from the Caribbean coast of Panama. The high genetic diversity recovered from so few samples suggests that the application of molecular taxonomy to neotropical amphioxus would likely uncover additional species and could help to more easily delineate morphological differences among taxa. Full article
(This article belongs to the Special Issue Patterns Of Marine Benthic Biodiversity)
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13 pages, 1949 KiB  
Article
Population Viability Analysis Revealed the Vulnerability of Yangtze Finless Porpoise (Neophocaena asiaeorientalis) in Poyang Lake
by Bin Wu, Weiping Wang, Yuehua Wang and Zhihong Zhang
Diversity 2025, 17(6), 410; https://doi.org/10.3390/d17060410 - 10 Jun 2025
Viewed by 595
Abstract
Poyang Lake in China is the most critical habitat and final refuge for the Yangtze finless porpoise (Neophocaena asiaeorientalis), YFP. In 2022, its population reached approximately 492 individuals, an increase of 35 from the 457 individuals recorded in 2017, showing a [...] Read more.
Poyang Lake in China is the most critical habitat and final refuge for the Yangtze finless porpoise (Neophocaena asiaeorientalis), YFP. In 2022, its population reached approximately 492 individuals, an increase of 35 from the 457 individuals recorded in 2017, showing a steady upward trend. The infrequent movement of YFPs between Poyang Lake and the Yangtze River represents a considerable threat to the long-term viability of this population. Additionally, serious water shortages in the lake during the dry season have led the government to consider the establishment of a hydraulic project. Therefore, a reliable risk assessment and quantitative analysis of conservation scenarios are urgently needed for this population. Population viability analysis of the YFP population in Poyang Lake was conducted using the VORTEX software. The baseline model predicted a probability of extinction of 0.241 over the next 100 years, with no probability of extinction in the first 30 years; the genetic diversity would be on a continuous downward trend and decline by 91.5%. The comprehensive protection model predicted a probability of extinction of 0.0028 and that the genetic diversity would be maintained at about 0.996 in 100 years. Breeding rate, sex ratio at birth, mortality rate, and gene flow were the factors that were sensitive to maintaining population viability. The results showed that the population of YFPs in Poyang Lake was at a high risk of extinction due to the decline in genetic diversity and the higher mortality and lower birth rate caused by habitat degradation. A total ban on productive fishing and the rescue and interchange of YFPs are conducive to enhancing the viability of the YFP population in Poyang Lake. Full article
(This article belongs to the Special Issue Wetland Biodiversity and Ecosystem Conservation)
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31 pages, 14206 KiB  
Article
Plants Traditionally Used for Making Utility Products by Forest Dwelling Gaddi and Sippi Tribes in Bhaderwah Tehsil of the Union Territory of Jammu and Kashmir, India
by Bhekam Pal Singh, Shivika Sharma, Vikas Sharma, R. K. Manhas and Iyyakkannu Sivanesan
Diversity 2025, 17(6), 409; https://doi.org/10.3390/d17060409 - 10 Jun 2025
Viewed by 587
Abstract
Tribals are known as the torchbearers of ethnobotany. Traditional plant-derived utility products (PUPs) are environmentally friendly, cost-effective, and easy to handle, and are extensively used by the forest-dwelling Gaddi and Sippi tribes of the Union Territory (UT) of Jammu and Kashmir for their [...] Read more.
Tribals are known as the torchbearers of ethnobotany. Traditional plant-derived utility products (PUPs) are environmentally friendly, cost-effective, and easy to handle, and are extensively used by the forest-dwelling Gaddi and Sippi tribes of the Union Territory (UT) of Jammu and Kashmir for their subsistence. The present study is an attempt to document the invaluable traditional knowledge on wild plants and PUPs possessed by the Gaddi and Sippi tribes before it perishes completely, as this knowledge is transmitted orally to the next generation. Semi-structured schedules were used for the collection of data regarding the method of making and usage of PUPs and the plant species used for making such products. The cultural importance index (CI) and factor informant consensus (Fic) were calculated to find the predominant plant species and the consensus among informants for species used in making PUPs, respectively. A total of 52 plant species from 28 families and 46 genera are used in the study area for making 93 PUPs. Tools, with a 55.9% contribution, were the major PUP category. Cedrus deodara, used for making 36 PUPs and having a 4.9 CI value, was the most utilized and important tree species for the Gaddi and Sippi tribes. The values of Fic ranged between 0.97 (miscellaneous PUPs) and 0.99 (containers/storage PUPs). The present study documented 43 plant species as new ethnobotanical records from the UT of Jammu and Kashmir for their use in traditional plant products. The Gaddi and Sippi tribes in the study area have extensive knowledge about forest-based PUPs and the associated plant species. This invaluable knowledge can be exploited for developing new resources for some value-added traditional plant products and agro-based cottage industries, which could play an important role in socio-economic upliftment and livelihood promotion of tribals. Full article
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13 pages, 1284 KiB  
Article
Locally Measured Functional Traits Predict Species Registrability in Herbaceous Flora
by Caihong Wei, Si Liu, Xiaoyue Liang, Yingcan Chen, Jiaen Zhang and Ronghua Li
Diversity 2025, 17(6), 408; https://doi.org/10.3390/d17060408 - 10 Jun 2025
Viewed by 321
Abstract
Understanding why some plant species become widespread while others remain restricted to limited ranges is a central challenge in ecology and biogeography. This study investigates how functional traits, including morphological, physiological, and nutrient-related traits, relate to the global registrability—defined as the likelihood of [...] Read more.
Understanding why some plant species become widespread while others remain restricted to limited ranges is a central challenge in ecology and biogeography. This study investigates how functional traits, including morphological, physiological, and nutrient-related traits, relate to the global registrability—defined as the likelihood of a species being observed and recorded—for 144 herbaceous plant species from Guangzhou, China. We combined field-measured morphological, physiological, and nutrient-related traits with occurrence data from the Global Biodiversity Information Facility (GBIF), quantified as the number of unique 10 km × 10 km grid cells per species. Our analyses reveal that resource-acquisitive traits—such as high leaf water content, chlorophyll concentration, and photosynthetic capacity—are positively associated with registrability, whereas traits linked to nutrient conservation (e.g., high leaf carbon content and leaf carbon-to-nitrogen ratios) show negative associations. Principal component analysis further indicates that multivariate trait axes characterized by acquisitive strategies are significantly and positively associated with higher registrability. These findings suggest that species with fast-growth, resource-intensive strategies are more likely to be encountered and reported, potentially due to both ecological generalism and observation bias. Full article
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13 pages, 1018 KiB  
Article
Nuisance Growth of Cissus verticillata (Vitaceae) Negatively Affects the Structure of Mangroves in Marismas Nacionales Nayarit, Mexico
by Olivia Millán-Aguilar, María Luisa Ordóñez-Rosas, Isaac Castillo-Cruz, Lidia Rodríguez-Arredondo, Marcelino Ruiz-Domínguez, Miguel Ángel Hurtado-Oliva and Marlenne Manzano-Sarabia
Diversity 2025, 17(6), 407; https://doi.org/10.3390/d17060407 - 9 Jun 2025
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Abstract
Changes in the structure and composition of mangroves may be influenced by anthropogenic and natural causes. Mangrove coverage in Marismas Nacionales Nayarit –a Biosphere Reserve in northwestern Mexico—has declined in the last decades, mostly related to human activities (e.g., opening of the Cuautla [...] Read more.
Changes in the structure and composition of mangroves may be influenced by anthropogenic and natural causes. Mangrove coverage in Marismas Nacionales Nayarit –a Biosphere Reserve in northwestern Mexico—has declined in the last decades, mostly related to human activities (e.g., opening of the Cuautla inlet) and climate variability (e.g., El Niño Southern Oscillation and hurricanes), leading to diverse ecological and socioeconomic consequences. This contribution reports the impact of Cissus verticillata—a climbing plant species—in the structure of mangroves distributed in this Natural Protected Area during 2019 and 2022. Forest structure analysis was compared in four plots of 20 m × 20 m each, all of them influenced by San Pedro Mezquital river. Two plots (Unión de Corrientes) showed the presence of Cissus verticillata, while two nearby plots (Boca de Camichín) recorded no presence of this species. A poor mangrove structure, no natural seedling recruitment and high mortality was observed in those sites with the presence of C. verticillata. These results highlight the vulnerability of mangroves to C. verticillata in Marismas Nacionales Nayarit Biosphere Reserve, which in addition to other human and climate stressors may compromise its ecological integrity in the future. Full article
(This article belongs to the Special Issue Spatial and Temporal Studies in Marine Protected Areas: Mexican Chapter)
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