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Grazing Offsets Nitrogen Enrichment Effects on Species Richness by Promoting the Random Colonization of Local Species in an Alpine Grassland

文献类型：期刊论文

作者Song, Ming-Hua1,3; Chen, Jin1,2; Xu, Xing-Liang1; Li, Yi-Kang3; Gao, Jun-Qin4; OuYang, Hua1
刊名ECOSYSTEMS
出版日期2020-03-01
卷号23期号:2页码:278-291
关键词clonality divergence grazing light limitation local extinction and colonization nitrogen enrichment plant traits species richness
ISSN号1432-9840
DOI10.1007/s10021-019-00403-8
通讯作者Song, Ming-Hua(songmh@igsnrr.ac.cn) ; Xu, Xing-Liang(xuxl@igsnrr.ac.cn)
英文摘要Nitrogen (N)-induced declines in species richness can be offset by grazing via the suppression of dominant species to increase ground-level light. However, it is not known whether grazing-mediated locally colonized species correspond to N-induced locally extinct species with regard to taxonomy or traits. Data from 11 years of N addition and winter grazing experiments were analyzed to assess species richness dynamics at community and functional group levels. Regarding N treatments, enclosure and N addition were performed during the first 7 years and were then followed by winter grazing with continuous N addition during the next 4 years. Additionally, all treatments were used to compare N-induced local species extinction and grazing-mediated local species colonization. Then, traits of N-induced locally extinct species and grazing-mediated locally colonized species were further correlated with plant traits. We found that N addition induced a decline in plant species richness as a result of both random and non-random species losses. The lost species were closely associated with traits, including low height, non-clonality, low special leaf area (SLA), and low leaf N concentrations, which are relevant to light capture capacity. In contrast, grazing promoted the random colonization of local rare species, thus offsetting the N-induced decline of species richness. However, non-randomly lost species were not rescued by grazing. Grazing-mediated locally colonized species were generally characterized by high leaf carbon (C) concentrations, SLA, and seed mass. Our study provides experimental evidence indicating although grazing offsets N-induced species reduction, shifts in species composition and traits could cause a divergence in ecosystem function facing anthropogenic alterations to nutrient cycles and grazing.
WOS关键词PLANT COMMUNITY RESPONSES ; BIODIVERSITY LOSS ; RESOURCE CONTROL ; DIVERSITY ; ECOSYSTEMS ; DEPOSITION ; LIGHT ; AVAILABILITY ; PRODUCTIVITY ; NUTRIENTS
资助项目Strategic Priority Research Program of Chinese Academy of Sciences[XDA2005010401] ; National key research and development program[2016YFC0502001] ; National key research and development program[2016YFC0501803] ; National Natural Science Foundation of China[41671263] ; Qinghai Innovation Platform Construction Project[2017-ZJ-Y20]
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000520408600004
出版者SPRINGER
资助机构Strategic Priority Research Program of Chinese Academy of Sciences ; National key research and development program ; National Natural Science Foundation of China ; Qinghai Innovation Platform Construction Project
源URL[http://ir.igsnrr.ac.cn/handle/311030/133429]  
专题中国科学院地理科学与资源研究所
通讯作者Song, Ming-Hua; Xu, Xing-Liang
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, A11 Datun Rd, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Yuquan Rd 35, Beijing 100083, Peoples R China
3.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Restorat Ecol Cold Area Qinghai Prov, 59 Xiguan Dajie, Xining 810008, Peoples R China
4.Beijing Forestry Univ, Sch Nat Conservat, Qinghua East Rd 35, Beijing 100083, Peoples R China
推荐引用方式
GB/T 7714		 Song, Ming-Hua,Chen, Jin,Xu, Xing-Liang,et al. Grazing Offsets Nitrogen Enrichment Effects on Species Richness by Promoting the Random Colonization of Local Species in an Alpine Grassland[J]. ECOSYSTEMS,2020,23(2):278-291.
APA Song, Ming-Hua,Chen, Jin,Xu, Xing-Liang,Li, Yi-Kang,Gao, Jun-Qin,&OuYang, Hua.(2020).Grazing Offsets Nitrogen Enrichment Effects on Species Richness by Promoting the Random Colonization of Local Species in an Alpine Grassland.ECOSYSTEMS,23(2),278-291.
MLA Song, Ming-Hua,et al."Grazing Offsets Nitrogen Enrichment Effects on Species Richness by Promoting the Random Colonization of Local Species in an Alpine Grassland".ECOSYSTEMS 23.2(2020):278-291.

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来源：地理科学与资源研究所

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