Loss of resource-conservative species affects plant phylogenetic and functional structure under long-term snow addition
文献类型：期刊论文
| 作者 | Jiang, Qianxin2,3; Skalsang, Gyal1,4; Zhu, Juntao2,3; Yang, Xian5; He, Yunlong2; Hou, Ge2; Zhang, Yangjian2,3; Dorji, Tsechoe4; Cadotte, Marc W.6; Jiang, Lin7 |
| 刊名 | JOURNAL OF ECOLOGY
 |
| 出版日期 | 2025-11-24 |
| 卷号 | N/A |
| 关键词 | alpine grassland community assembly conservative species functional trait phylogenetic structure snow addition species turnover Tibetan Plateau |
| ISSN号 | 0022-0477 |
| DOI | 10.1111/1365-2745.70202 |
| 产权排序 | 1 |
| 文献子类 | Article ; Early Access |
| 英文摘要 | Climate change and human activities are increasingly influencing ecological communities. Within this context, increasing extreme snow events and persistent livestock grazing are known to pose significant challenges to alpine ecosystems on the Tibetan Plateau. However, the mechanisms driving long-term community assembly and structural changes under these concurrent pressures remain unclear. Here, we used a 16-year field experiment in a Tibetan alpine grassland to investigate the effects of spring snow addition and yak grazing on taxonomic, phylogenetic and functional community diversity and structure. We found that snow addition was the primary driver of community structure, while the effects of grazing were less pronounced. Specifically, snow addition shifted the phylogenetic structure from being random to overdispersed. This shift was driven by the selective loss of species with conservative resource-use strategies (i.e. those with high leaf dry matter content [LDMC] and low-specific leaf area), which were phylogenetically more closely related to the residents than were the gained species. In contrast, communities remained functionally clustered under all treatments. This resulted from opposing structural shifts in individual traits, where LDMC became more overdispersed, while plant height and leaf nitrogen content (LNC) became more clustered, driven by the loss of taller species and the gain of species with low LNC. This decoupling between phylogenetic and functional responses suggests that environmental filtering selects for convergent functional adaptations among phylogenetically distant species. Synthesis. Our findings highlight the importance of considering multi-faceted diversity metrics when exploring community assembly and provide the first experimental evidence that long-term snow addition reshapes plant phylogenetic community structure on the Tibetan Plateau. Importantly, the loss of conservative species suggests that altered snow regimes may potentially shift key ecosystem functions in alpine grasslands. Our findings also demonstrate that integrating species gain and loss is essential for a predictive understanding of long-term community dynamics under global change. |
| URL标识 | 查看原文 |
| WOS关键词 | COMMUNITY STRUCTURE ; ARCTIC TUNDRA ; R-PACKAGE ; DIVERSITY ; TRAIT ; BIODIVERSITY ; HABITAT ; OVERDISPERSION ; TEMPERATURE ; MECHANISMS |
| WOS研究方向 | Plant Sciences ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001620866300001 |
| 出版者 | WILEY |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/217724]  |
| 专题 | 拉萨站高原生态系统研究中心_外文论文 |
| 通讯作者 | Zhu, Juntao; Dorji, Tsechoe |
| 作者单位 | 1.Tibet Univ, Sch Ecol & Environm, Key Lab Biodivers & Environm Qinghai Tibetan Plate, Minist Educ, Lhasa, Peoples R China; 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modelling, Beijing, Peoples R China; 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China; 4.Chinese Acad Sci, Inst Tibetan Plateau Res, State Key Lab Tibetan Plateau Earth Syst Environm, Beijing, Peoples R China; 5.Sun Yat Sen Univ, Sch Ecol, State Key Lab Biocontrol, Guangzhou, Peoples R China; 6.Univ Toronto Scarborough, Dept Biol Sci, Toronto, ON, Canada; 7.Georgia Inst Technol, Sch Biol Sci, Atlanta, GA USA |
| 推荐引用方式 GB/T 7714 | Jiang, Qianxin,Skalsang, Gyal,Zhu, Juntao,et al. Loss of resource-conservative species affects plant phylogenetic and functional structure under long-term snow addition[J]. JOURNAL OF ECOLOGY,2025,N/A. |
| APA | Jiang, Qianxin.,Skalsang, Gyal.,Zhu, Juntao.,Yang, Xian.,He, Yunlong.,...&Jiang, Lin.(2025).Loss of resource-conservative species affects plant phylogenetic and functional structure under long-term snow addition.JOURNAL OF ECOLOGY,N/A. |
| MLA | Jiang, Qianxin,et al."Loss of resource-conservative species affects plant phylogenetic and functional structure under long-term snow addition".JOURNAL OF ECOLOGY N/A(2025). |
入库方式： OAI收割
来源：地理科学与资源研究所
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