Global Ecology and Conservation最新文献

{"title":"Genomic signatures of habitat isolation and paleo-climate unveil the “island-like” pattern in the glasshouse plant Rheum nobile","authors":"Hum Kala Rana ,&nbsp;Santosh Kumar Rana ,&nbsp;Hang Sun ,&nbsp;Dong Luo","doi":"10.1016/j.gecco.2025.e03471","DOIUrl":"10.1016/j.gecco.2025.e03471","url":null,"abstract":"<div><div>The Himalaya and the Hengduan Mountains, known for their ‘Sky Islands’ ecosystems, offer a unique opportunity to study genomic differentiation of endemic plants. While there is growing research on the genetic mechanisms underlying the distinctiveness of species in these regions, gaps remain in understanding the specific genomic processes shaping the “island-like” genetic structure of <em>Rheum nobile</em>. This study investigates <em>R. nobile</em>, a distinctive glasshouse plant native to the alpine-subnival belt, to uncover the genetic dynamics contributing to its “island-like” structure and genetic diversity in these unique ecosystems. We analyzed plastome and Internal Transcribed Spacer (ITS) sequences from 104 <em>R. nobile</em> samples, revealing significant genetic structure with significant unique alleles across populations. Three phylogroups were identified, corresponding to the floristic regionalization of the Himalaya and the Hengduan Mountains. The three main lineages diverged allopatrically around 7.38–4.19 million years ago (Mya). Notably, a significant population bottleneck occurred between 0.18–0.016 Mya (plastome) and 0.38–0.031 Mya (ITS). There was no correlation between genetic patterns and geographic or environmental distances. Gene flow was limited across three phylogroups. Ensemble Species Distribution Modelling suggested multiple refugia during or even before the Last Glacial Maximum, indicating a complex historical distribution. The “island-like” genetic patterns of <em>Rheum nobile</em> results from fragmented habitats and prolonged isolation during the Quaternary glaciation. This study highlights the species’ evolutionary trajectory shaped by ecological adaptation, and climatic fluctuations, providing valuable insights for future conservation and management efforts in its native environment.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":"58 ","pages":"Article e03471"},"PeriodicalIF":3.5,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143278792","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":"Age and moisture affect the relationship between competition and tree growth","authors":"Xinyu Han ,&nbsp;Lushuang Gao ,&nbsp;Mingqian Liu ,&nbsp;Yihong Zhu ,&nbsp;Keda Cui ,&nbsp;Xinyu Zhang ,&nbsp;Xiuhai Zhao ,&nbsp;Ruibo Zhang ,&nbsp;Klaus von Gadow ,&nbsp;Yiyu Tian ,&nbsp;Kangchen Wang","doi":"10.1016/j.gecco.2025.e03464","DOIUrl":"10.1016/j.gecco.2025.e03464","url":null,"abstract":"<div><div>The frequent and intensifying droughts caused by climate warming are leading to widespread declines in tree growth and increased mortality, posing a significant threat to the health and vitality of forest ecosystems. While competition among trees is recognized as a critical factor influencing their growth, the precise mechanism underlying its impact remains unclear. Here, we investigate the role of crown size in the process of competition affecting tree growth across varying gradients of age and moisture conditions. Our analysis is based on comprehensive data collected from natural forests of Xing'an larch (<em>Larix gmelinii</em>) located in the northeastern region of China. We observed that competition indirectly impacts tree growth by diminishing crown size, and this influence is modulated by both tree age and environmental moisture conditions. Specifically, mature trees are better able to withstand competition pressure than young trees. The stimulatory effect of crown size on tree growth enhances in young tress, but diminishes in mature trees. Additionally, the negative impact of competition on tree crown size is more pronounced in high moisture regions, and larches experiencing crown reduction under intense competition exhibit a heightened sensitivity to water availability. Our findings provide robust evidence that competition indirectly influences tree growth by modifying their phenotypic traits. Notably, the crown, serving as a crucial organ for nutrient acquisition in trees, was a mediating factor between competition and growth. This result holds significant implications for the sustainable management of forest ecosystems in the face of a warming climate in the future.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":"58 ","pages":"Article e03464"},"PeriodicalIF":3.5,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143147913","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":"Passive acoustic monitoring of an elusive rail, the corncrake (Crex crex): Calling patterns, detectability and monitoring recommendations","authors":"Andrea Parisi ,&nbsp;Marie Greaney ,&nbsp;John Carey ,&nbsp;James Moran ,&nbsp;Joanne O’Brien","doi":"10.1016/j.gecco.2025.e03470","DOIUrl":"10.1016/j.gecco.2025.e03470","url":null,"abstract":"<div><div>Due to their elusive nature, some species are hard to survey. This can present challenges for conserving rare and vulnerable species. However, conservation projects need reliable population data to understand the species status and prioritise strategies. We acoustically monitored the corncrake (<em>Crex crex</em>), a nationally endangered ground-nesting bird in Ireland. Little is known about the calling pattern of this species, and consequently, survey efforts may not be efficiently allocated. Twelve long-term acoustic deployments were manually scanned to extract the male broadcast calls. The calling activity was modelled as a response variable predicted by weather, lunar and temporal variables. Additionally, detectability according to weather variables and lunar fraction was assessed using a single-species occupancy model. We found marked vocal diel (hour, P &lt; 0.001) and seasonal (date, P &lt; 0.001) patterns. The calling activity was also negatively affected by temperature (P &lt; 0.001) and wind speed (P &lt; 0.001). Furthermore, a significant interaction (P = 0.023) existed between cloud cover and lunar illumination. The detectability analysis highlighted a 64 % probability of detecting a corncrake at an occupied site during a night visit. Wind speed and cloud cover negatively affected the likelihood of detection, while lunar fraction had a positive influence. We concluded that corncrake surveys should continue to focus the effort between 23:00 and 03:00, considering that calling peak activity occurred between 01:00–02:00 in May and June. Cool nights with clear sky, high lunar illumination and wind speed below 20 km/h are recommended to improve detections. By planning surveys on these conditions, conservation projects may enhance species detection and save resources required for field efforts.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":"58 ","pages":"Article e03470"},"PeriodicalIF":3.5,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143147358","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":"Precipitation changes alter the structure, species composition and interspecific relationships of desert steppe plant communities","authors":"Kechen Song ,&nbsp;Hao Zhang ,&nbsp;Haiying Hu ,&nbsp;Yingzhong Xie ,&nbsp;Xiaona Zhao ,&nbsp;Yiyin Zhang ,&nbsp;Jiayi Yong ,&nbsp;Wenhui Deng ,&nbsp;Siyu Guan","doi":"10.1016/j.gecco.2025.e03460","DOIUrl":"10.1016/j.gecco.2025.e03460","url":null,"abstract":"<div><div>Precipitation (P) is the sole water source supporting plant growth in the desert steppe, governing the structure and function of plant communities. Nevertheless, how changes in precipitation alter species composition and affect interspecific relationships within plant communities remains unclear. To address this, we simulated five precipitation gradients, ranging from 50 % (P_−50 %), 70 % (P_−30 %), 100 % (P_CK), 130 % (P_+30 %), to 150 % (P_+50 %) relative to ambient precipitation. We assessed the effects of precipitation treatments and seasonality on plant community structure and species composition in late spring, mid-summer, and late summer. Results showed that (1) The desert grassland plant community exhibited an asymmetric response to precipitation amount and seasonal variatt steppe ecosystems, interspecific connectivity reflecion, where the impact of late-spring precipitation on the quantitative traits, importance values (<em>IV</em>), and mean niche overlap of communities was greater than that of mid-summer and late-summer precipitation, and the effects of decreased precipitation were more significant than those of increased precipitation. (2) The niche of perennial plants did not change with the season, while the <em>IV</em> and ecological niche width (<em>B</em>) of annual plants increased as the seasons passed. (3) Decreased precipitation reduced the mean niche overlap of all species, the <em>B</em> of Leguminosae plants, and the <em>IV</em> of all species except for <em>Stipa breviflora</em> and <em>Convolvulus ammannii</em>. (4) The overall association index indicated a positive correlation among communities, showing significant correlations in P_+50 %, P_−30 %, and P_−50 %. The association index between populations gradually shifted from negative to positive with decreasing precipitation. Therefore, we suggest that both drought and wetness tend to intensify interspecific interactions within the community. More importantly, drought transformed the population relationships from competition to mutualistic symbiosis.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":"58 ","pages":"Article e03460"},"PeriodicalIF":3.5,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143351778","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":"Corrigendum to “A unified approach to long-term population monitoring of grizzly bears in the Greater Yellowstone Ecosystem” [Glob. Ecol. Conserv. 54 (2024) e03133]","authors":"Matthew J. Gould ,&nbsp;Justin G. Clapp ,&nbsp;Mark A. Haroldson ,&nbsp;Cecily M. Costello ,&nbsp;J. Joshua Nowak ,&nbsp;Hans W. Martin ,&nbsp;Michael R. Ebinger ,&nbsp;Daniel D. Bjornlie ,&nbsp;Daniel J. Thompson ,&nbsp;Justin A. Dellinger ,&nbsp;Matthew A. Mumma ,&nbsp;Paul M. Lukacs ,&nbsp;Frank T. van Manen","doi":"10.1016/j.gecco.2025.e03461","DOIUrl":"10.1016/j.gecco.2025.e03461","url":null,"abstract":"","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":"58 ","pages":"Article e03461"},"PeriodicalIF":3.5,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143535190","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":"Determining the status of ecosystem degradation trends and their implications for ecological integrity in the southern African grassland biome","authors":"L.R. Vukeya ,&nbsp;T.M. Mokotjomela ,&nbsp;N. Pillay","doi":"10.1016/j.gecco.2025.e03462","DOIUrl":"10.1016/j.gecco.2025.e03462","url":null,"abstract":"<div><div>The value of the southern African grassland biome as a biodiversity hotspot will be amplified by its potential to sequester carbon and contribute towards climate change mitigation. Despite this, several studies have reported alarming degradation and transformation of this biome, threatening its ecosystem functioning and services. Using a whole-biome assessment, we aimed: (1) to ascertain the dynamics in the vegetation cover over 34 years (1986–2020), assess the extent and trends of anthropogenic activities; (2) to assess the intensity of alien plant species (APS) invasions in different parts of the grassland biome; and from this (3) anticipate the conservation implications for this biome and identify and prioritise management needs for vulnerable parts of the biome (e.g., critical biodiversity and water sources). Our results showed that sparse vegetation (i.e., equivalent to indigenous grassland) lost 31.5 % of its cover between 1986 and 2020, while the “moderate vegetation cover” and “dense vegetation cover” (comparable to transformed grassland and associated with bush encroachment) increased by 16.8 % and 24.7 % respectively, indicating a substantial loss of biodiversity and ecosystem services. Overall, 39.2 % (365,629 km²) of the grassland biome has been permanently modified, while 60.8 % of the basic ecosystems remain unchanged. We recorded eleven prominent land cover use classes dominated by agricultural activities accounting for 31.9 % (365,629 km²) of which 27.4 % was cultivated area, and 4.5 % was forest plantation, and human settlement covered 4.2 %. Of the 1332 alien plant species recorded, 17.8 %-36.2 % were invasive. The hotspots for APS covered 19.7 % (374,002 km²) of the biome, were concentrated in one province, and were highly dominated by herbs and woody species (46 % and 38 %, respectively). The abundance of APS increased by 13.64 % since the 1900s. Alien woody species increased from 2.2 % occupancy in 1980–4.0 % in 2020, covering 0.4 % (17,217 Km²) of protected critical biodiversity areas and 9.6 % (102,123 Km²) of important water source areas. Our study suggests that management efforts for woody alien invasions could usefully prioritise water source areas and sensitive biodiversity areas to achieve multiple objectives simultaneously, including carbon sequestration. We conclude that the functioning, biodiversity and services supplied by the southern African grassland biome is at risk that could be addressed by urgent context-specific management action, policy and selective habitat restoration/rehabilitation interventions. In particular, we recommend that the management efforts for woody alien invasions prioritise water sources and critical biodiversity areas.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":"58 ","pages":"Article e03462"},"PeriodicalIF":3.5,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143278791","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":"Precision foraging: Bats in organic desert palm plantations hunt where it is most needed","authors":"Danilo Russo ,&nbsp;Fabiana Soprano ,&nbsp;Luca Cistrone ,&nbsp;Adi Einav ,&nbsp;Jessica Schäckermann ,&nbsp;Ioannis Ekklisiarchos ,&nbsp;Carmi Korine","doi":"10.1016/j.gecco.2025.e03467","DOIUrl":"10.1016/j.gecco.2025.e03467","url":null,"abstract":"<div><div>Bats are crucial in suppressing pest arthropods in agroecosystems, contributing vitally to sustainable agriculture. However, the importance of bats in agriculture in extreme environments, such as deserts, has received far less attention. Date palm plantations represent one of the few productive systems in hyper-arid regions. We studied habitat use in an organic date palm plantation in the Arava Valley (Southern Israel) employing acoustic surveys to assess bat activity and foraging behaviour. According to our predictions, bats preferentially foraged in the plantation’s most productive areas, with most of the 13 recorded species exhibiting significant activity in older, sheltered plots. Higher wind speeds correlated with decreased foraging across most species, but sheltered habitats often buffered this effect. While species richness remained stable across habitats, according to our prediction, activity levels varied according to habitat type and wind conditions. In general, bat activity increased in old productive plots in the plantation’s core section and decreased elsewhere in response to strong winds. These results highlight the importance of maintaining older productive areas within the interiors of date palm plantations to support bat populations and enhance their pest-suppressing roles. Management strategies should design wind-buffering plantations to protect critical bat foraging areas and provide water sources. As date palm plantations act as \"oases\" in unproductive landscapes, many bats likely travel significant distances to forage there. Protecting bat habitats on a large scale and prioritising multiscale conservation is crucial to preserving bats and their ecosystem services.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":"58 ","pages":"Article e03467"},"PeriodicalIF":3.5,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143147914","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":"Integrated strategies enhance soil fertility restoration effectiveness in ion-adsorption rare earth mining areas: A meta-analysis","authors":"Tao Wang ,&nbsp;Yizhen Liu ,&nbsp;Jun Ye ,&nbsp;Sheng Xu ,&nbsp;Qiying Cai ,&nbsp;Yongxiu Li ,&nbsp;Lan Wu ,&nbsp;Chi Yao ,&nbsp;Gang Ge","doi":"10.1016/j.gecco.2025.e03465","DOIUrl":"10.1016/j.gecco.2025.e03465","url":null,"abstract":"<div><div>The extraction of ionic rare earth elements has resulted in significant land degradation, with low soil fertility posing a critical challenge to ecological restoration in these regions. Despite extensive efforts, the effectiveness of soil fertility restoration measures remains debated, and the success of these interventions is not yet fully established. This study employs a meta-analysis to evaluate the effects of soil fertility restoration measures in ionic rare earth mines and to assess the influence of technical details on restoration outcomes. Although soil fertility has generally improved following restoration efforts, it remains at a relatively low level, with a potential risk of diminishing effectiveness over time. Single restoration measures exhibit substantial limitations, underscoring the necessity of an integrated restoration strategy in severely degraded ionic rare earth mines. Within this integrated restoration framework, factors such as the type and dosage of soil conditioners, microbial inoculation, and species selection and configuration play pivotal roles in determining restoration success. A phased species configuration strategy within this framework may yield more effective and sustainable restoration outcomes. Despite certain limitations, these findings offer valuable insights for optimizing soil fertility restoration practices in severely degraded ecosystems, advancing scientific understanding, and providing practical recommendations for enhancing the long-term sustainability of restoration efforts.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":"58 ","pages":"Article e03465"},"PeriodicalIF":3.5,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143147554","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":"Developing a new method using thermal drones for population surveys of the world's rarest great ape species, Pongo tapanuliensis","authors":"Dede Aulia Rahman ,&nbsp;Haryanto R. Putro ,&nbsp;Tubagus Ahmad Mufawwaz ,&nbsp;Dones Rinaldi ,&nbsp;Yun Yudiarti ,&nbsp;Eka Dana Prabowo ,&nbsp;Harnios Arief ,&nbsp;Jamartin Sihite ,&nbsp;Fadillah Rachmah Nur Priantara","doi":"10.1016/j.gecco.2025.e03463","DOIUrl":"10.1016/j.gecco.2025.e03463","url":null,"abstract":"<div><div>Accurate population estimates are crucial for conservation, but surveying arboreal species can be costly and challenging. Unoccupied aerial vehicles (a.k.a drones) equipped with thermal infrared (TIR) and visible spectrum (RGB) cameras are increasingly used to survey rare primates, though their accuracy still requires ground-truthing. This pilot study evaluates the effectiveness of drones with TIR and RGB sensors to detect and count Tapanuli orangutans in South Tapanuli, Sumatra, in an unprotected area classified as an “Area for Other Use”. 37 drone flights, including seven grid and 30 manual flights, were conducted between June 18 and July 1, 2023. Tapanuli orangutans displayed body temperatures of approximately 26°C on the TIR sensor and were prominent in the infrared imagery during the evening and morning when the forest canopy was cooler (between 10 and 16 °C), but became more challenging to distinguish by mid-morning when sunlight elevated the vegetation cover's temperature to over 30°C. Our study demonstrates that a drone with a TIR camera can accurately detect and count Tapanuli orangutans and other canopy animals in multiple land uses. There was strong agreement between ground and drone counts for Tapanuli orangutans (6 vs 5 individuals), indicating no significant difference between these survey methods. Furthermore, the TIR drone footage allowed for the detection of additional individuals, owing to its broader coverage compared to ground surveys. Our comparative analyses illustrate how various drone methods can effectively detect Tapanuli orangutans and other canopy animals, with the potential to support fine-scale population abundance and habitat mapping through spatially explicit detections.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":"58 ","pages":"Article e03463"},"PeriodicalIF":3.5,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143147912","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":"Nitrogen sensitivity of soil microorganism community in alpine desert steppe is not always higher than that in alpine steppe","authors":"Zhishu Wang ,&nbsp;Jianyu Xiao ,&nbsp;Fusong Han ,&nbsp;Shaolin Huang ,&nbsp;Chengqun Yu","doi":"10.1016/j.gecco.2025.e03459","DOIUrl":"10.1016/j.gecco.2025.e03459","url":null,"abstract":"<div><div>A rapid increase in nitrogen deposition has caused many hazards to the Tibetan Plateau over the past few decades. However, as one of the important limiting factors in alpine ecosystems, nitrogen fertilizers are often used to restore the severely degraded grassland. But, little is known about the response of soil microbes to nitrogen addition in the western Tibetan, which will limit our understanding and comprehensive assessment of global alpine grassland ecosystems. This study conducted an experiment with five levels of nitrogen addition (0, 5, 10, 20, 40 g N m⁻² y⁻¹) in an alpine steppe (AS) and an alpine desert steppe (ADS) at the source of Brahmaputra. In this study, plant and soil data were analyzed from August 2023, it showed that nitrogen sensitivity of soil microbes and their response to nitrogen addition vary with the nitrogen addition rate, grassland type, microbial kingdom, and the dimension used. Nitrogen sensitivity of soil bacterial community in the AS was higher than that in the ADS at 10 g N m⁻² y⁻¹ nitrogen addition rate, while the result was reversed at 20–40 g N m⁻² y⁻¹ ; the fungal community was more sensitive than bacterial community in the ADS at 5 g N m⁻² y⁻¹ nitrogen addition rate, while the result was reversed 20–40 g N m⁻² y⁻¹ ; the nitrogen sensitivity of the bacterial community's β-diversity in AS varied across species, functional, and phylogenetic dimensions. The main environment factors affecting nitrogen sensitivity were different in the AS and the ADS. This study explored the effects of nitrogen addition on soil bacterial and fungal communities in two types of grasslands in the western Tibetan, providing important foundations for further understanding of microbial ecology in alpine ecosystems, as well as valuable insights for managing nitrogen deposition in alpine ecosystems.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":"59 ","pages":"Article e03459"},"PeriodicalIF":3.5,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549320","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}