Global Ecology and Conservation最新文献

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Best practices for mitigating seabird bycatch on Taiwanese albacore longline fishing vessels operating in the southeastern Atlantic Ocean 减少在东南大西洋作业的台湾长鳍金枪鱼延绳钓渔船附带捕获海鸟的最佳做法
IF 3.5 2区 环境科学与生态学
Global Ecology and Conservation Pub Date : 2025-07-17 DOI: 10.1016/j.gecco.2025.e03752
Hsiang-Wen Huang , Huan-Chang Liao , Ting-Chun Kuo , Shu-Chun Chen , Yu-Min Yeh
{"title":"Best practices for mitigating seabird bycatch on Taiwanese albacore longline fishing vessels operating in the southeastern Atlantic Ocean","authors":"Hsiang-Wen Huang ,&nbsp;Huan-Chang Liao ,&nbsp;Ting-Chun Kuo ,&nbsp;Shu-Chun Chen ,&nbsp;Yu-Min Yeh","doi":"10.1016/j.gecco.2025.e03752","DOIUrl":"10.1016/j.gecco.2025.e03752","url":null,"abstract":"<div><div>Seabird bycatch—particularly involving albatrosses and petrels—remains a significant conservation concern in pelagic longline fisheries. This study evaluated the effectiveness of three mitigation measures—bird-scaring lines (BSLs), weighted branch lines, and night setting—in reducing seabird bycatch in the Taiwanese albacore (Thunnus alalunga) longline fishery operating in the southeastern Atlantic Ocean. Observations were conducted aboard a commercial vessel during 103 longline sets in 2013. Four BSL treatments were tested: single and double conventional BSLs and single and double experimental BSLs recommended by the International Commission for the Conservation of Atlantic Tunas (ICCAT), each combined with either weighted (60 g at 3 m from the hook) or unweighted branch lines. A total of 298 seabirds were caught during line setting, with an additional 18 birds caught and released alive during hauling and trolling. Night setting emerged as the most effective mitigation measure, with a bycatch rate of 0.046 birds per 1000 hooks—substantially lower than the 1.101 birds per 1000 hooks recorded during daytime setting. While BSLs effectively deterred seabird attacks within their aerial extent, their efficacy declined when baited hooks remained within the diving range of seabirds beyond this zone. Weighted branch lines reduced seabird bycatch by 61 %; however, they were also associated with a potential decrease in albacore catch rates. Our findings highlight that the effectiveness of best practice mitigation—namely, the combined use of BSLs and weighted branch lines—depends on ensuring that baited hooks reach depths beyond seabird diving capabilities before exiting the aerial extent of the BSLs. Further optimization is needed to balance conservation outcomes with fishery performance.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":"62 ","pages":"Article e03752"},"PeriodicalIF":3.5,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144665927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Human activities and climate change are the main factors of amphibian extinction 人类活动和气候变化是导致两栖动物灭绝的主要因素
IF 3.5 2区 环境科学与生态学
Global Ecology and Conservation Pub Date : 2025-07-16 DOI: 10.1016/j.gecco.2025.e03747
Zhong Chen , Yuan-Sheng Cao , Meng-Sheng Dong , Wen-Bo Li
{"title":"Human activities and climate change are the main factors of amphibian extinction","authors":"Zhong Chen ,&nbsp;Yuan-Sheng Cao ,&nbsp;Meng-Sheng Dong ,&nbsp;Wen-Bo Li","doi":"10.1016/j.gecco.2025.e03747","DOIUrl":"10.1016/j.gecco.2025.e03747","url":null,"abstract":"<div><div>Human activities and climate change directly influencing species distribution and species richness leading to approximately 41 % of the ∼ 8009 Amphibian species being threatened with extinction. In this study we used species distribution model (SDM) and integrated data on gross domestic product (GDP), human footprint index (HFI), normalized difference vegetation index (NDVI), human population density (HPD) and climate change to predict potential changes in the distributional range and richness of 43 amphibian species in Anhui Province, China. Our results showed that GDP and HFI, have a negative impact on amphibian distributions. With increasing anthropogenic pressure, species' ranges were restricted to areas of low GPD (≤0) and HFI (3−12). Change in temperature (Bio 8 and Bio10) were also significant contributors to a reduction in the range of amphibian species. Under the expected influence of climate change over the next 30–70 years, we found that highly suitable habitat for amphibians will continue to decrease and species will be restricted to smaller and more peripheral parts of their current range. Areas of high amphibian diversity are expected to lose from 2 to 18 species. The findings provide crucial baseline information for understanding the effects of human activities and climate change on amphibian habitats in Anhui, and lay a theoretical foundation for future amphibian research and conservation efforts.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":"62 ","pages":"Article e03747"},"PeriodicalIF":3.5,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144672207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A conservation priority index to rank fish species within IUCN Red List categories: A case study of marine fishes from Réunion Island 世界自然保护联盟红色名录中鱼类分类的优先保护指数:以rsamunion岛海鱼为例
IF 3.5 2区 环境科学与生态学
Global Ecology and Conservation Pub Date : 2025-07-15 DOI: 10.1016/j.gecco.2025.e03750
Clara Laugier , David Roos , Patricia Belloeil , Kélig Mahé , Amélie Nithard , Tévamie Rungassamy , Dominique Pelletier , Emmanuel Tessier , Isaac Trindade-Santos , Marianne Robert , Fabien Leprieur , Matthew McLean , Camille Albouy , Arnaud Auber
{"title":"A conservation priority index to rank fish species within IUCN Red List categories: A case study of marine fishes from Réunion Island","authors":"Clara Laugier ,&nbsp;David Roos ,&nbsp;Patricia Belloeil ,&nbsp;Kélig Mahé ,&nbsp;Amélie Nithard ,&nbsp;Tévamie Rungassamy ,&nbsp;Dominique Pelletier ,&nbsp;Emmanuel Tessier ,&nbsp;Isaac Trindade-Santos ,&nbsp;Marianne Robert ,&nbsp;Fabien Leprieur ,&nbsp;Matthew McLean ,&nbsp;Camille Albouy ,&nbsp;Arnaud Auber","doi":"10.1016/j.gecco.2025.e03750","DOIUrl":"10.1016/j.gecco.2025.e03750","url":null,"abstract":"<div><div>Although the IUCN Red List is a crucial tool for assessing the extinction risk of species, further ranking species within each IUCN category is needed to refine conservation priorities. In practice, managers and policy makers often require to prioritize species according to IUCN categories, and subsequently rank them within these categories. The current IUCN classification system relies on quantitative criteria related to population dynamics such as population size, rate of decline, and geographic range, without considering the functional or evolutionary distinctiveness of species, nor directly accounting for their vulnerability to individual anthropogenic pressures like climate change or fishing. These pressures may instead be considered indirectly through the criteria used, which often reflect the combined effects of multiple, interrelated human-induced threats. Here, we developed an index to quantify the conservation priority of fish species with the same IUCN status by combining five criteria: functional distinctiveness, evolutionary distinctiveness, abundance scarcity, vulnerability to climate change, and vulnerability to fishing. This framework enables managers to customize priorities by assigning varying levels of importance to each criteria, offering a flexible tool for refining conservation plans. To demonstrate its applicability, we tested this framework on the marine fish community of Réunion Island, an area with a significant number of species classified as ‘vulnerable’ on the IUCN Red List. Finally, we discuss how this framework, formalized into an index, could substantially enhance fish species conservation and contribute to the long-term sustainability of ecosystems.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":"62 ","pages":"Article e03750"},"PeriodicalIF":3.5,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144672208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Exploring the role of natural vegetation in shaping bee diversity, functional space, and species turnover across agricultural landscapes 探索自然植被在农业景观中蜜蜂多样性、功能空间和物种周转中的作用
IF 3.5 2区 环境科学与生态学
Global Ecology and Conservation Pub Date : 2025-07-15 DOI: 10.1016/j.gecco.2025.e03749
Florencia Vicencio-Olivares , Manuel López-Aliste , Pablo Díaz-Siefer , Ingrid N. Gomes , Christian Jofré-Pérez , Luis Flores-Prado , Juan L. Celis-Diez , Francisco E. Fontúrbel
{"title":"Exploring the role of natural vegetation in shaping bee diversity, functional space, and species turnover across agricultural landscapes","authors":"Florencia Vicencio-Olivares ,&nbsp;Manuel López-Aliste ,&nbsp;Pablo Díaz-Siefer ,&nbsp;Ingrid N. Gomes ,&nbsp;Christian Jofré-Pérez ,&nbsp;Luis Flores-Prado ,&nbsp;Juan L. Celis-Diez ,&nbsp;Francisco E. Fontúrbel","doi":"10.1016/j.gecco.2025.e03749","DOIUrl":"10.1016/j.gecco.2025.e03749","url":null,"abstract":"<div><div>Agricultural expansion contributes to the degradation and fragmentation of natural ecosystems, resulting in the decline of wild pollinators, particularly bees. However, sustainable practices, such as preserving patches of native vegetation around crops, can help enhance pollinator diversity. Based on the ecological intensification framework, we investigated how the conservation of natural vegetation areas near apple and cherry orchards influences the composition, functional space, and turnover of bee species within the studied communities in a Mediterranean-type ecosystem of central Chile. We found a dominance of generalist bees in apple and sweet cherry orchards, and a greater taxonomic richness in crops surrounded by a higher proportion of natural vegetation. However, the functional space and species turnover in the crops during the analyzed years were low, likely due to environmental filters imposed by monoculture practices and the dominance of bee communities consisting mostly of generalist species. These findings highlight the critical role of surrounding natural vegetation areas in supporting bee functional diversity and taxonomic richness. Despite functional diversity and species turnover being low due to monoculture constraints, preserving natural habitats is essential for a more diverse community of bees. This study sheds light on how wild bee communities respond to agricultural landscapes and highlights the role of conserving natural areas in mitigating the impacts of agricultural intensification on pollinators.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":"62 ","pages":"Article e03749"},"PeriodicalIF":3.5,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144657233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quantifying the ecological network dynamics associated with ecological restoration projects: A case study in Southwest China 与生态修复工程相关的生态网络动态量化——以西南地区为例
IF 3.5 2区 环境科学与生态学
Global Ecology and Conservation Pub Date : 2025-07-15 DOI: 10.1016/j.gecco.2025.e03744
Jingyang Fan , Shiliang Liu , Wanting Wang , Yetong Li , Yifei Zhao , Gang Wu
{"title":"Quantifying the ecological network dynamics associated with ecological restoration projects: A case study in Southwest China","authors":"Jingyang Fan ,&nbsp;Shiliang Liu ,&nbsp;Wanting Wang ,&nbsp;Yetong Li ,&nbsp;Yifei Zhao ,&nbsp;Gang Wu","doi":"10.1016/j.gecco.2025.e03744","DOIUrl":"10.1016/j.gecco.2025.e03744","url":null,"abstract":"<div><div>Ecological restoration projects have played an important role in curbing current ecological degradation trends, restoring ecological networks, and ensuring regional ecological security. In China, numerous large-scale and high-investment projects have been implemented, emphasizing the concepts of system protection and integrative restoration. However, in the context of ecological restoration at a large scale, how ecological restoration improves the effectiveness of the ecological network is still unclear. To address this issue, we selected the Liuchong River Basin in a typical karst region of Southwest China to assess the ecological network change associated with ecological restoration projects during the period 2016–2018. The Morphological Spatial Pattern Analysis (MSPA) model was applied to identify the ecological sources, the Linkage Mapper tool was used to construct an ecological network, and changes in key features of the ecological network were further quantified. The results showed that there were 32, 26, and 38 ecological source points identified in 2010, 2015, and 2020, respectively. While ecological resistance values remained relatively stable, the number and length of ecological corridors increased significantly, particularly under the influence of the River Channel Regulation Project (RCRP) and the Water Source Restoration Project (WSRP). The α, β, and γ indices increased by 15.31 %, 11.18 %, and 8.33 %, respectively, indicating improved network circuitry, structural accessibility, and node connectivity. These enhancements suggest a shift toward a more integrated and resilient ecological network. Our results suggest that ecological restoration can promote the integrity of ecological networks and has a positive effect on system protection and integrative restoration.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":"62 ","pages":"Article e03744"},"PeriodicalIF":3.5,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144631166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Water table reduction shapes soil nematode communities in Zoige peatlands 若尔盖泥炭地地下水位降低影响土壤线虫群落
IF 3.5 2区 环境科学与生态学
Global Ecology and Conservation Pub Date : 2025-07-15 DOI: 10.1016/j.gecco.2025.e03751
Zhengchao Yu , Feng Sun , Mei Wang , Na Li
{"title":"Water table reduction shapes soil nematode communities in Zoige peatlands","authors":"Zhengchao Yu ,&nbsp;Feng Sun ,&nbsp;Mei Wang ,&nbsp;Na Li","doi":"10.1016/j.gecco.2025.e03751","DOIUrl":"10.1016/j.gecco.2025.e03751","url":null,"abstract":"<div><div>The water table of the Zoige peatland has been reduced in recent decades due to climate change and human activities. However, as the biological indicators of soil environment, how the response of soil nematode communities to water table reduction was no clear. In this study, we conducted an in situ field sampling at low, intermediate, and high water table levels (ranging from −72 cm to −18 cm) in the Zoige peatland. The results showed that water table reduction increased the density of bacterivores and decreased the density of fungivores. Nematode diversity also decreased with water table reduction. The nematode channel ratio increased significantly after the water table reduction, indicating that the soil food web was transformed from a fungal-based channel (low decomposition efficiency) to a bacterial-based energy channel (high decomposition efficiency), especially in deep soil (with a maximum increase of 86 %). Structural equation modeling indicated that soil water table reduction had a negative effect on soil water content, thus increasing the abundance of fungivores, bacterivores and herbivores. Soil water table reduction had a positive effect on soil pH, thus increasing bacterivores, but decreasing fungivores. Our results provide substantial evidence for the degradation of Zoige peatland due to water table reduction caused by climate change and anthropogenic disturbance in the future.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":"62 ","pages":"Article e03751"},"PeriodicalIF":3.5,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144633175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Integrating space, time, and prey: How wild and domestic carnivores co-exist in natural ecosystems 整合空间、时间和猎物:野生和家养食肉动物如何在自然生态系统中共存
IF 3.5 2区 环境科学与生态学
Global Ecology and Conservation Pub Date : 2025-07-14 DOI: 10.1016/j.gecco.2025.e03746
Hua Zhong , Fengjiao Li , Luciano Atzeni , Yixuan Liu , Ruifen Wang , Abduzaire Alemiti , Koderhan Bayakan , Kun Shi
{"title":"Integrating space, time, and prey: How wild and domestic carnivores co-exist in natural ecosystems","authors":"Hua Zhong ,&nbsp;Fengjiao Li ,&nbsp;Luciano Atzeni ,&nbsp;Yixuan Liu ,&nbsp;Ruifen Wang ,&nbsp;Abduzaire Alemiti ,&nbsp;Koderhan Bayakan ,&nbsp;Kun Shi","doi":"10.1016/j.gecco.2025.e03746","DOIUrl":"10.1016/j.gecco.2025.e03746","url":null,"abstract":"<div><div>As human activities increasingly encroach into natural ecosystems, it is critical to understand how carnivores coexist with anthropogenic disturbances, for example, the domestic dog (<em>Canis lupus familiaris</em>), which roams freely in natural habitats and represents a global conservation concern. Few studies have employed multi-faceted approaches to address this issue, limiting our understanding of carnivore coexistence mechanisms. We focused on the carnivores in the Tianshan Mountains of Central Asia to describe their multi-niche coexistence patterns, integrating dietary metabarcoding, multispecies occupancy modeling and temporal activity analysis. We found that snow leopards (<em>Panthera uncia</em>) and wolves (<em>Canis lupus</em>) showed high dietary, spatial, and temporal overlap, sharing preferences for ibex (<em>Capra sibirica</em>) and avoiding elk (<em>Cervus canadensis</em>). Dietary analysis revealed that domestic dogs shared prey preferences and exhibited high dietary overlap with both snow leopards and wolves. These results indicate that dogs may compete with both apex predators for resources, particularly wolves due to their high spatio-temporal overlap. The red fox (<em>Vulpes vulpes</em>) had lower dietary overlap with other carnivores due to lower reliance on large mammals, which were likely obtained through scavenging. This scavenging behavior was further supported by its tendency to spatially co-occur with large carnivores, especially snow leopards. Given its varied temporal overlaps with large carnivores, we demonstrated that its coexistence with them is facilitated by flexible resource use and temporal adaptations, rather than spatial segregation. These findings reveal carnivore coexistence despite disturbance from free-roaming dogs and underscore the need to enhance dog management for promoting human-wildlife coexistence in natural ecosystems.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":"62 ","pages":"Article e03746"},"PeriodicalIF":3.5,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144704767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spring drought delayed the stem growth resumption of four broadleaf species in a subtropical forest of China 春季干旱延缓了亚热带森林四种阔叶植物茎的恢复生长
IF 3.5 2区 环境科学与生态学
Global Ecology and Conservation Pub Date : 2025-07-14 DOI: 10.1016/j.gecco.2025.e03753
Jing Jiang , Jian Kang , Haiyong Wei , Jinli Tang , Shaowei Jiang , Biyun Yu , Hongxin Su
{"title":"Spring drought delayed the stem growth resumption of four broadleaf species in a subtropical forest of China","authors":"Jing Jiang ,&nbsp;Jian Kang ,&nbsp;Haiyong Wei ,&nbsp;Jinli Tang ,&nbsp;Shaowei Jiang ,&nbsp;Biyun Yu ,&nbsp;Hongxin Su","doi":"10.1016/j.gecco.2025.e03753","DOIUrl":"10.1016/j.gecco.2025.e03753","url":null,"abstract":"<div><div>Adverse effects of frequent extreme drought events on forest growth have been widely reported. Previous studies primarily focused on boreal forests and temperate forests. However, it is unclear how drought affects the cambium phenology and growth rate of trees, particularly subtropical broadleaf trees. Vaganov-Shashkin (VS) models based on tree-ring chronologies were used to simulate cambium phenology data of 4 tree species (<em>Liquidambar formosana, Camphora bodinieri, Choerospondias axillaris, and Machilus nanmu</em>) from 1984 to 2017, and the response of cambium phenology and growth rate to spring drought was studied. The study found no significant changes in cambium phenology and growth rate between 1984 and 2017. Stem recovery was significantly delayed in all species 1–2 years after drought. Only the cumulative growth rate of <em>C. axillaris</em> decreased significantly in the drought year, and drought had no carryover effect on the cumulative growth rate of all tree species. This consistency was primarily due to the higher resistance and recovery. Although individual spring drought events have a delayed effect on cambium phenology, high resilience ensures that all tree species return to pre-drought levels within 2 years after the drought. This study provides an indispensable scientific benchmark for the adaptive management of global subtropical forests, holding profound significance for sustaining the Earth's critical ecosystem services.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":"62 ","pages":"Article e03753"},"PeriodicalIF":3.5,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144632893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Precipitation-driven biomass reallocation in a desert steppe: Unraveling adaptive strategies through a 6-year manipulative experiment 荒漠草原降水驱动的生物量再分配:通过一项为期6年的操纵实验揭示适应策略
IF 3.5 2区 环境科学与生态学
Global Ecology and Conservation Pub Date : 2025-07-14 DOI: 10.1016/j.gecco.2025.e03748
Yuanyuan Cui , Liu Bai , Dongjie Hou , Zhongwu Wang , Jing Wang , Zhiqiang Qu , Yunbo Wang , Guodong Han , Zhiguo Li , Haiyan Ren , Haiming Wang
{"title":"Precipitation-driven biomass reallocation in a desert steppe: Unraveling adaptive strategies through a 6-year manipulative experiment","authors":"Yuanyuan Cui ,&nbsp;Liu Bai ,&nbsp;Dongjie Hou ,&nbsp;Zhongwu Wang ,&nbsp;Jing Wang ,&nbsp;Zhiqiang Qu ,&nbsp;Yunbo Wang ,&nbsp;Guodong Han ,&nbsp;Zhiguo Li ,&nbsp;Haiyan Ren ,&nbsp;Haiming Wang","doi":"10.1016/j.gecco.2025.e03748","DOIUrl":"10.1016/j.gecco.2025.e03748","url":null,"abstract":"<div><div>Understanding biomass allocation patterns is critical for predicting plant adaptation strategies under climate change scenarios. At present, the theory of biomass allocation (optimal allocation and equidistant allocation) is still controversial, especially in the “fragile” desert steppe, which is especially sensitive to climate change. Therefore, we set up four treatments with varying precipitation gradients [natural precipitation reduced by 50 % (W<sub>-50 %</sub>), control (W<sub>CK</sub>), natural precipitation increased by 50 % (W<sub>+50 %</sub>), and natural precipitation increased by 100 % (W<sub>+100 %</sub>)] in the desert steppe of Inner Mongolia and applied them for six years before analyzing the trade-off relationship between aboveground and below-ground biomass, verifying the distribution theory, and considering the factors affecting change in biomass distribution. Our findings revealed that the aboveground biomass increased significantly with the increase of precipitation gradient, while the below-ground biomass was significantly different between years. Desert steppe plants allocated more biomass to the below-ground and followed the optimal allocation theory, W<sub>-50 %</sub> amplified the trade-off of biomass to the belowground, W<sub>+50 %</sub> and W<sub>+100 %</sub> treatments transferred the biomass aboveground instead, which claimed that both plant diversity and soil physicochemical properties regulate biomass allocation. At W<sub>-50 %</sub> treatment, plant growth was limited by soil water content. At W<sub>+50 %</sub> and W<sub>+100 %</sub> treatments, plants were limited by soil available nutrients. The “opportunistic” strategy of annual herbs explains why biomass was re-directed to the aboveground organs. Our results emphasize desert plants can adapt to precipitation change using high variation and optimal biomass allocation.</div></div>","PeriodicalId":54264,"journal":{"name":"Global Ecology and Conservation","volume":"62 ","pages":"Article e03748"},"PeriodicalIF":3.5,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144704763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Integrating LiDAR and ecological metrics to quantify habitat suitability for the platypus (Ornithorhynchus anatinus) 基于激光雷达和生态指标的鸭嘴兽栖息地适宜性量化研究
IF 3.5 2区 环境科学与生态学
Global Ecology and Conservation Pub Date : 2025-07-13 DOI: 10.1016/j.gecco.2025.e03745
Monique Lush , Gilad Bino , Tahneal Hawke , Adrian Fisher , Sarah May
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