Hongdi Gao , Jinhui Wang , Feng Chen , Sheng Chen , Zhenxian Zhu , Ke He , Baoquan Liu
{"title":"Priority areas for wintering waterbirds and the need to remove Spartina along Zhejiang coast","authors":"Hongdi Gao , Jinhui Wang , Feng Chen , Sheng Chen , Zhenxian Zhu , Ke He , Baoquan Liu","doi":"10.1016/j.gecco.2024.e03279","DOIUrl":"10.1016/j.gecco.2024.e03279","url":null,"abstract":"<div><div>The East Asian-Australasian Flyway (EAAF) is home to over 50 million migratory waterbirds, of which 32 are globally threatened and 19 are near-threatened. These migratory waterbirds rely on productive coastal wetlands to rest and feed, allowing them to replenish their energy reserves for their next leg of migration. The Zhejiang coast, an important wintering and stopover site for migratory waterbirds in the EAAF, has undergone marked changes in recent decades, including alterations to its habitat owing to reclamation activities. The temporal and spatial dynamics and community diversity of waterbirds in this coastal area as well as the places that require increased attention for protection remain poorly understood. Therefore, in the current study, we aimed to elucidate the diversity and community structure of waterbirds in diverse coastal wetlands within Zhejiang. Based on synchronous survey data collected during the wintering period from 2022 to 2024 in Zhejiang, the taxonomic, phylogenetic, and functional diversity of four groups of waterbirds (dabbling birds, diving birds, large waders, and small waders) across 10 main coastal wetlands in Zhejiang were assessed. The results showed an increased abundance of dabbling birds, and small waders experienced a significant decrease in recent years. As integral components of the EAAF, three regions (Hangzhou Bay, Wenzhou region, and Xuanmen-Yueqing Bay) within Zhejiang should be considered high priority because of the three criteria of critical international wetlands, the irreplaceability index, and the critical position within the community structure. An analysis of community structures revealed that environmental factors were crucial in shaping dabbling birds and large wader communities. These findings were supported by constrained principal coordinate analysis, which suggested that the percentage of the cordgrass <em>Spartina alterniflora</em> is a factor influencing these phenomena. The geographic location and percentage of <em>S. alterniflora</em> might have contributed to these differences. These results were consistent with the <em>S. alterniflora</em> removal work by the government. Overall, these findings have important implications for policy-making decisions regarding species conservation efforts along the East-South China coast. Effective measures should be implemented to restore vegetation in tidal wetlands along the coast to provide suitable habitats for different groups of waterbirds. Further development and utilization, including the economic exploitation and management of these crucial coastal wetlands, as well as the management of wetland vegetation, should be approached with greater caution.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142578994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Decline in alien plant species turnover among geographically isolated mountains with ropeway corridors","authors":"Asuka Koyama , Chika Egawa , Munemitsu Akasaka","doi":"10.1016/j.gecco.2024.e03282","DOIUrl":"10.1016/j.gecco.2024.e03282","url":null,"abstract":"<div><div>Anthropogenic corridors facilitate alien invasions from low to high elevations in mountains. While native plant assemblages generally show a large elevational turnover to alpine species, alien plant assemblages at high elevations seem to consist of only generalist species with broad tolerances, resulting in a nested structure of lowlands. These may cause homogeneous alien plant assemblages even in geographically isolated higher elevations, thereby undermining the alpine flora uniqueness. We focused on ropeway corridors that may facilitate alien invasions up long elevational gradients from lowlands, and examined the followings on 14 mountains across Japan: Are alien plant assemblages at high elevations accessible by ropeways formed as a subset of lowland alien species? and Are alien plant assemblages homogeneous among isolated higher elevations? We analyzed species richness and spatial turnover of alien and native species at the lower and upper ends of ropeways, as well as the effects of geographical and climatic factors on the spatial turnover and alien species’ presence probability at upper ends. Alien species richness decreased with elevation, whereas native species richness did not. The degree of spatial turnover of alien species was lower than that of native species, especially at upper ends, and was not affected by coordinal distance, unlike native species. The alien species’ presence probability at the upper ends was influenced by that at the lower ends. Our results highlight that homogeneous alien plant assemblages are formed across isolated higher elevations with ropeways. Strengthening the management of lowland alien species pools is necessary to conserve mountain biodiversity.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142593303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mohammad Reza Ashrafzadeh , Marzieh Moradi , Rasoul Khosravi , Ali Asghar Naghipour , Dan Chamberlain
{"title":"Impacts of climate change on a high elevation specialist bird are ameliorated by terrain complexity","authors":"Mohammad Reza Ashrafzadeh , Marzieh Moradi , Rasoul Khosravi , Ali Asghar Naghipour , Dan Chamberlain","doi":"10.1016/j.gecco.2024.e03281","DOIUrl":"10.1016/j.gecco.2024.e03281","url":null,"abstract":"<div><div>Climate change is predicted to result in elevational and latitudinal shifts in species distributions. Among different taxa, high-elevation specialist species are likely to suffer the greatest impact from climate change due to the limited ability to track their niches. Although much work has been undertaken on predicting the effects of climate change on the range contraction/expansion of mountain species, one important but fairly neglected issue is to consider the impacts of non-climate data in the projections of Species Distribution Models (SDMs). We evaluated the degree to which incorporating non-climatic data into climate-based SDMs would change the predicted vulnerability of the Caspian Snowcock (<em>Tetraogallus caspius</em>), a poorly known high-elevation specialist species, to climate change. We first optimized the MaxEnt model for the current species distribution using: (1) only climatic variables; and, (2) both climatic and non-climatic data. We then projected the optimized model for two future time periods under different climate scenarios. Finally, we calculated differences in the mean elevation and lower and upper range limits for the species. We predicted that with changing climatic conditions, Caspian Snowcock will undergo significant elevational and some latitudinal shifts in its distribution and will face a drastic decrease in suitable habitat in the next 50 years. Including non-climatic data in the models increased model performance and resulted in reduced predictions of habitat loss under future climate scenarios. Terrain roughness was the most important predictor in this model, suggesting that more complex topography will retain favourable microclimates for the species in the future. The results thus highlight the importance of including topographic variables in climate-based SDMs. Our findings can guide biodiversity managers in prioritizing protected areas and adopting proactive measures to mitigate the negative impacts of climate change.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142578995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Trevor Bak , Steve Mullin , Emilie Kohler , Bradley A. Eichelberger , Richard J. Camp
{"title":"Forest bird population status on Saipan, a small oceanic island","authors":"Trevor Bak , Steve Mullin , Emilie Kohler , Bradley A. Eichelberger , Richard J. Camp","doi":"10.1016/j.gecco.2024.e03273","DOIUrl":"10.1016/j.gecco.2024.e03273","url":null,"abstract":"<div><div>Tropical oceanic islands are critical biodiversity hotspots where population monitoring can help to determine the status and trends of rare and endangered species. Saipan is the second largest island in the Mariana Islands and contains many endemic and range-restricted bird species. Surveys of forest birds were conducted on Saipan using point-transect distance sampling, starting in 1982. To determine population status for Saipan avifauna, we generated abundance estimates based on surveys conducted in 1982, 1997, 2007, and 2018. We also assessed community composition by exploring if there were changes in assemblage diversity, total forest bird abundance, and ratio of native to non-native populations over time. For the 2018 survey, there were 5791 detections of 18 species during 242 counts, with six of 18 species detected at > 50 % of the counts and with relatively high abundance, while 12 species were detected at < 50 % of the counts and were uncommon or rare. The most abundant species was Bridled White eye (nosa', <em>Zosterops conspicillatus saypani</em>) at > 40 birds/ha and the least common species was the Saipan Reed Warbler (gå'ga' karisu, <em>Acrocephalus hiwae)</em> at < 1 bird/ha. We found that the community composition is becoming slightly more even over time and the overall community abundance is stable (around 375,000 birds), but non-native species have become more common while native species have remained stable. Results from this study can be used to inform conservation management of forest birds in Saipan and contribute to a broader understanding of forest bird status in the Marianas.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142560826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Damber Bista , Benjamin Allen , Greg Baxter , Rosemary Booth , Kathryn Reardon-Smith , Vanessa Gorecki , Peter Murray
{"title":"Immediate impacts of fire on koala movement in a fragmented landscape","authors":"Damber Bista , Benjamin Allen , Greg Baxter , Rosemary Booth , Kathryn Reardon-Smith , Vanessa Gorecki , Peter Murray","doi":"10.1016/j.gecco.2024.e03274","DOIUrl":"10.1016/j.gecco.2024.e03274","url":null,"abstract":"<div><div>Hazard reduction burns could pose a significant conservation challenge to threatened habitat specialists, such as koalas <em>Phascolarctos cinereus</em>. This study examines the immediate effects of a medium to hot hazard reduction burn on a small number of koalas occupying a fragmented agricultural area. Three koalas being monitored using GPS telemetry were inadvertently exposed to fire in a small strip of roadside vegetation in an agricultural landscape, providing an unexpected opportunity to assess their immediate responses to the fire. Nearly 81 % of available trees were burnt to some degree, with 31 % of tree foliage scorched up to 10.2 m above the ground. The koalas reduced their home range sizes by 20–54 % post-fire, where two avoided burnt areas while one remained within them. These findings highlight the importance of maintaining unburnt patches and corridors in fragmented landscapes and developing comprehensive conservation plans to mitigate the adverse effects of fire on koalas and other arboreal fauna.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Francesco Ceresa , Mattia Brambilla , Laura Kvist , Severino Vitulano , Michele Pes , Laura Tomasi , Paolo Pedrini , Chiara Bettega , Matteo Anderle , Andreas Hilpold , Petra Kranebitter
{"title":"Wing morphology changes with habitat availability and elevation in an alpine-specialist bird","authors":"Francesco Ceresa , Mattia Brambilla , Laura Kvist , Severino Vitulano , Michele Pes , Laura Tomasi , Paolo Pedrini , Chiara Bettega , Matteo Anderle , Andreas Hilpold , Petra Kranebitter","doi":"10.1016/j.gecco.2024.e03276","DOIUrl":"10.1016/j.gecco.2024.e03276","url":null,"abstract":"<div><div>Intraspecific morphological variation of organisms is known to be influenced by several factors, but the role of habitat availability has been scarcely investigated. Studying bird wing morphology is ideal to explore this topic, given the usually rapid response of birds to environmental changes, but other factors such as sexual dimorphism, habitat structure, climate and elevation need to be considered. Here, we investigated the effects of habitat availability, local climate and elevation on the wing morphology of a high-elevation specialist bird (<em>Montifringilla nivalis</em>), while accounting for sexual dimorphism. We hypothesized that birds relying on less extended suitable areas around their breeding sites show wing traits allowing a more energy-efficient flight, given their need of more frequent and longer movements to find foraging areas in the post-breeding period and the longer dispersal distances. We also expected that individuals breeding at higher elevations show wings traits allowing higher flight efficiency, given the higher hypoxia risk. We derived wing traits (isometric size, pointedness and concavity) by measuring primary feathers of individuals from 7 breeding sites in the European Alps, and we obtained habitat availability from detailed habitat suitability maps. Consistently with the need for a more energy-efficient flight, birds relying on less extended suitable habitat showed larger and more concave wings, and individuals breeding at higher elevations showed more concave wings. Local climate had a less clear effect. The observed patterns may result from local adaptations and could represent one of the ways mountain birds cope with the harsh and unpredictable environment they inhabit.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yunfei Feng , Jianshuang Wu , Meng Li , Ben Chen , Minyahel Tilahun , Xianzhou Zhang
{"title":"Carbon use efficiency of alpine grasslands affected by grazing exclusion and local environmental context in Tibet, China","authors":"Yunfei Feng , Jianshuang Wu , Meng Li , Ben Chen , Minyahel Tilahun , Xianzhou Zhang","doi":"10.1016/j.gecco.2024.e03275","DOIUrl":"10.1016/j.gecco.2024.e03275","url":null,"abstract":"<div><div>Carbon use efficiency (CUE) is essential for understanding how climate change impacts carbon fixation by vegetation across diverse ecosystems globally. However, the effects of anthropogenic efforts, such as ecosystem restoration of degraded grasslands via livestock grazing exclusion with fences on the spatiotemporal variation in CUE under ongoing climate change remain poorly evaluated and understood. In this study, we calculated CUE values for fenced and adjacent grazed alpine grasslands in Tibet, China. We considered soil properties, topographical features, and climate conditions as potential predictors to explain the spatial patterns and temporal dynamics of CUE across these grasslands. Our results showed that the annual mean CUE of fenced vs. grazed grasslands were similar with values of 0.6961 and 0.6956 across the whole plateau. However, the annual CUE of fenced grasslands increased at a faster rate (6.89 × 10<sup>−5</sup> per year) compared to grazed grasslands (0.23 × 10<sup>−5</sup> per year) from 2006 to 2019. CUE also exhibited substantial variation across alpine grassland communities, with the highest values observed in alpine steppe meadows under both fenced and grazed management. Precipitation was identified as the most influential factor controlling the spatial pattern of CUE and showed a significant negative correlation with CUE. Moreover, the presence of fences was found to reduce the sensitivity of CUE to in response to varying precipitation. The effectiveness of fences in enhancing CUE primarily depends on local environmental conditions. Our study sheds light on the interplays between ecological restoration efforts and climate change in shaping the CUE dynamics of alpine grasslands on the Tibetan Plateau and emphasizes the importance of local environmental contexts when programming and implementing restoration projects.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Temporal beta diversity and community concordance in freshwater fish and benthic macroinvertebrates on a national scale: Does biodiversity change at the same rate?","authors":"Mi-Jung Bae, Eui-Jin Kim","doi":"10.1016/j.gecco.2024.e03278","DOIUrl":"10.1016/j.gecco.2024.e03278","url":null,"abstract":"<div><div>In this study, we conducted a comprehensive examination of changes in beta diversity over a decade (2009–2019) at 482 sites across five major river basins in South Korea and analyzed the changes in community concordance between freshwater fish and benthic macroinvertebrates. Temporal beta diversity for both fish and macroinvertebrate generally increased across all basins, suggesting continuous changes in their community composition over time. However, the rate and extent of these changes varied substantially among the basins. Moreover, turnover, a measure of species replacement, consistently exceeded nestedness, a measure of species loss or gain. This indicates that species replacement –especially from endemic and anthropogenic disturbance sensitive species to invasive and tolerant species – is the dominant process shaping the observed biodiversity patterns. Furthermore, the degree of similarity between fish and macroinvertebrate communities (i.e., concordance) showed a diverse pattern of changes across the basins, emphasizing that the annual rate of biodiversity change between two communities differs according to the basins. The study's results indicate that species replacements are the dominant force reshaping aquatic communities, with significant implications for ecological resilience and adaptive management. These findings underscore the necessity of continuous biological monitoring and further research incorporating comprehensive environmental data to better understand and mitigate the impacts of environmental changes on biodiversity.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142560825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jiawei Li , Dongrui Li , Yanwen Fu , Yiwen Ma , Jianping Ge , Limin Feng
{"title":"The abundance and sett ecological characteristics of the Asian badger (Meles leucurus) in the Northeast Tiger and Leopard National Park (NE China)","authors":"Jiawei Li , Dongrui Li , Yanwen Fu , Yiwen Ma , Jianping Ge , Limin Feng","doi":"10.1016/j.gecco.2024.e03272","DOIUrl":"10.1016/j.gecco.2024.e03272","url":null,"abstract":"<div><div>The sett is a crucial resource for badgers, serving various functions and significantly influencing their spatial ecology. The selection of sett sites is also a complex behavior. While there have been extensive ecological studies on the European badger (<em>Meles meles</em>), little is known about the Asian badger (<em>Meles leucurus</em>), particularly in China, making it difficult to evaluate their current survival status and establish conservation strategies. Therefore, we conducted a pioneering ecological study on the Asian badger, focusing on local population density and habitat selection within the Northeast Tiger and Leopard National Park, NE China. First, we surveyed badger setts in the study area and set camera traps to capture videos of badgers and estimate the number of individuals. The estimated badger density based on the main sett distribution (1.40 sett /km<sup>2</sup>) and group size (average of 3.01 ± 1.82 individuals per sett) was 4.21 ± 2.55 badgers /km<sup>2</sup>. Second, we set up random points in the study area and measured 12 habitat factors of 67 random point quadrats and 67 badger sett quadrats to establish which factors affect the habitat selection of badgers. Statistical tests, random forest algorithm, and generalized linear model were used to explain the sett selection criteria of Asian badgers. Statistical tests indicated a highly significant difference in slope (p < 0.01) and a significant difference in tree distance and aspect (p < 0.05) between sett quadrats and random point quadrats. After correction for multiple testing according to Holm, we found that differences in tree distance and aspect lost their statistical significance. However, the random forest algorithm and generalized linear model showed that the selection of sett location was influenced by tree distance, slope, and aspect. We conclude that badgers exhibit a preference for setts located near trees, steep slopes, and orientations facing north and northwest (316–45°). This is the first assessment of the abundance and sett selection of the Asian badger at the local population scale from Chinese nature reserves, providing new insights into the population ecology and habitat selection of the Asian badger in China, and assisting in the development of relevant conservation strategies and management.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yuzhao Du , Shuhan Yang , Haiyan Dong , Jinbo Li , Qianqian Sun , Yanye Zhong , He Wang , Yining Wu
{"title":"Effects of marsh wetland degradation on the soil nematode community composition and functions in the Songnen Plain, northeastern China","authors":"Yuzhao Du , Shuhan Yang , Haiyan Dong , Jinbo Li , Qianqian Sun , Yanye Zhong , He Wang , Yining Wu","doi":"10.1016/j.gecco.2024.e03277","DOIUrl":"10.1016/j.gecco.2024.e03277","url":null,"abstract":"<div><div>Wetland degradation is a major threat to global biodiversity. Knowing how soil nematodes respond to wetland degradation can help predict its impact on ecosystem functions. In this study, the impacts of wetland degradation on soil nematodes and the interactions with soil physicochemical characteristics were explored via high-throughput sequencing and network analysis under different degradation degrees. There was a significant decline in the diversity of soil nematode communities with increasing degradation. An increase in degradation was correlated with a higher abundance of Chromadorea and a decrease in the relative abundance of omnivorous-predatory nematodes. This suggests that with wetland degradation, the structure of the soil nematode community becomes less complex, and the nutrient sources for soil nematodes become scarce. Wetlands subjected to varying degrees of degradation exhibited significant alterations in the structure of soil nematode communities. Severe degradation was associated with a pronounced decrease in the Shannon diversity index. Non-metric multidimensional scaling analysis indicated that the different degradation levels differed in their impacts on soil nematode communities. Mantel analysis showed that soil pH, soil organic carbon, and total nitrogen play a crucial role in determining soil nematode community structure. Symbiotic network analysis revealed that wetland degradation decreased the number of links in the network of soil nematodes. The modifications to the soil environment induced by wetland degradation are likely to intensify the effects of these factors on the characteristics of soil nematode communities. Consequently, wetland degradation can be assessed and restored by studying the effects of soil nematode communities on the soil.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}