Knowledge Management System of Northwest Institute of Plateau Biology, CAS
Abundance- and functional-based mechanisms of plant diversity loss with fertilization in the presence and absence of herbivores | |
Yang, Zhongling1,2; Hautier, Yann3,4; Borer, Elizabeth T.4; Zhang, Chunhui5; Du, Guozhen1 | |
2015-09-01 | |
发表期刊 | OECOLOGIA |
卷号 | 179期号:1页码:261-270 |
文章类型 | Article |
摘要 | Nutrient supply and herbivores can regulate plant species composition, biodiversity and functioning of terrestrial ecosystems. Nutrient enrichment frequently increases plant productivity and decreases diversity while herbivores tend to maintain plant diversity in productive systems. However, the mechanisms by which nutrient enrichment and herbivores regulate plant diversity remain unclear. Abundance-based mechanisms propose that fertilization leads to the extinction of rare species due to random loss of individuals of all species. In contrast, functional-based mechanisms propose that species exclusion is based on functional traits which are disadvantageous under fertilized conditions. We tested mechanistic links between fertilization and diversity loss in the presence or absence of consumers using data from a 4-year fertilization and fencing experiment in an alpine meadow. We found that both abundance- and functional-based mechanisms simultaneously affected species loss in the absence of herbivores while only abundance-based mechanisms affected species loss in the presence of herbivores. Our results indicate that an abundance-based mechanism may consistently play a role in the loss of plant diversity with fertilization, and that diversity decline is driven primarily by the loss of rare species regardless of a plant's functional traits and whether or not herbivores are present. Increasing efforts to conserve rare species in the context of ecosystem eutrophication is a central challenge for grazed grassland ecosystems.; Nutrient supply and herbivores can regulate plant species composition, biodiversity and functioning of terrestrial ecosystems. Nutrient enrichment frequently increases plant productivity and decreases diversity while herbivores tend to maintain plant diversity in productive systems. However, the mechanisms by which nutrient enrichment and herbivores regulate plant diversity remain unclear. Abundance-based mechanisms propose that fertilization leads to the extinction of rare species due to random loss of individuals of all species. In contrast, functional-based mechanisms propose that species exclusion is based on functional traits which are disadvantageous under fertilized conditions. We tested mechanistic links between fertilization and diversity loss in the presence or absence of consumers using data from a 4-year fertilization and fencing experiment in an alpine meadow. We found that both abundance- and functional-based mechanisms simultaneously affected species loss in the absence of herbivores while only abundance-based mechanisms affected species loss in the presence of herbivores. Our results indicate that an abundance-based mechanism may consistently play a role in the loss of plant diversity with fertilization, and that diversity decline is driven primarily by the loss of rare species regardless of a plant's functional traits and whether or not herbivores are present. Increasing efforts to conserve rare species in the context of ecosystem eutrophication is a central challenge for grazed grassland ecosystems. |
关键词 | Alpine Meadow Community Composition Competition Functional Traits Rare Species |
WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
关键词[WOS] | SPECIES RICHNESS ; ECOSYSTEM RESPONSES ; RESOURCE CONTROL ; NITROGEN-CYCLE ; ALPINE MEADOW ; BIODIVERSITY ; TRAITS ; COMPETITION ; GRASSLAND ; COMMUNITY |
收录类别 | SCI |
语种 | 英语 |
WOS研究方向 | Environmental Sciences & Ecology |
WOS类目 | Ecology |
WOS记录号 | WOS:000360547000022 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://210.75.249.4/handle/363003/5518 |
专题 | 中国科学院西北高原生物研究所 |
作者单位 | 1.Lanzhou Univ, State Key Lab Grassland Agroecosyst, Lanzhou 730000, Peoples R China 2.Henan Univ, State Key Lab Cotton Biol, Key Lab Plant Stress Biol, Coll Life Sci, Kaifeng 475004, Henan, Peoples R China 3.Univ Oxford, Dept Plant Sci, Oxford OX1 3RB, England 4.Univ Utrecht, Dept Biol, Ecol & Biodivers, NL-3584 CH Utrecht, Netherlands 5.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Qinghai, Peoples R China |
推荐引用方式 GB/T 7714 | Yang, Zhongling,Hautier, Yann,Borer, Elizabeth T.,et al. Abundance- and functional-based mechanisms of plant diversity loss with fertilization in the presence and absence of herbivores[J]. OECOLOGIA,2015,179(1):261-270. |
APA | Yang, Zhongling,Hautier, Yann,Borer, Elizabeth T.,Zhang, Chunhui,&Du, Guozhen.(2015).Abundance- and functional-based mechanisms of plant diversity loss with fertilization in the presence and absence of herbivores.OECOLOGIA,179(1),261-270. |
MLA | Yang, Zhongling,et al."Abundance- and functional-based mechanisms of plant diversity loss with fertilization in the presence and absence of herbivores".OECOLOGIA 179.1(2015):261-270. |
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