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题名: Trait-based community assembly of aquatic macrophytes along a water depth gradient in a freshwater lake
作者: Fu, Hui1, 2; Zhong, Jiayou2; Yuan, Guixiang1, 2; Xie, Ping1; Guo, Longgen1; Zhang, Xiaolin1; Xu, Jun1; Li, Zhongqianng3; Li, Wei1; Zhang, Meng1; Cao, Te1; Ni, Leyi1
关键词: aquatic macrophytes ; functional trait ; habitat filtering ; niche differentiation ; trait-environment relationships
刊名: FRESHWATER BIOLOGY
发表日期: 2014-12-01
DOI: 10.1111/fwb.12443
卷: 59, 期:12, 页:2462-2471
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Marine & Freshwater Biology
研究领域[WOS]: Marine & Freshwater Biology
英文摘要: Trait-based approaches provide a framework for integrating the distribution of functional traits associated with ecological strategies into the responses of plant community dynamics along environmental gradients. We used a trait-based approach to unravel the processes governing macrophyte community assembly along a water depth gradient. We sampled 42 plots and 1513 individual plants and measured 12 functional traits and abundance of 17 macrophyte species. The results showed significant evidences of habitat filtering (i.e. a significant reduction in the range and variance of trait values) and of niche differentiation (i.e. trait values distributed more evenly than expected), both of which affected the functional responses of macrophyte communities associated with different sets of traits in significant different patterns along the gradient. Habitat filtering effects increased significantly for specific leaf area and leaf carbon content along the gradient. Niche differentiation effects increased significantly for leaf dry mass content, but decreased for ramet size, shoot height and leaf carbon content with increasing water depth, implying that the relative strength of biotic competition in a specific functional niche would vary with water depth. Intraspecific trait variability promoted significantly the detection of habitat filtering effects on stem diameter, lamina thickness and stem dry mass content, and niche differentiation effects on specific leaf area, leaf dry mass content, shoot height, stem diameter, stem dry mass content and ramet size. Community assembly processes shape the functional trait distribution within communities along environmental gradients through hierarchical effects of habitat filtering and niche differentiation. Our study highlights that niche differentiation plays a structuring role in macrophyte community assembly and that intraspecific trait variability is an important factor influencing macrophyte community dynamics. 10.1111/(ISSN)1365-2427
关键词[WOS]: FUNCTIONAL TRAITS ; ENVIRONMENTAL GRADIENT ; ECOSYSTEM SERVICES ; PLANT-COMMUNITIES ; BIODIVERSITY LOSS ; CURRENT KNOWLEDGE ; AMAZONIAN FOREST ; ECOLOGY ; COMPETITION ; FRAMEWORK
语种: 英语
WOS记录号: WOS:000344778800003
ISSN号: 0046-5070
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/20293
Appears in Collections:淡水生态学研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
2.Jiangxi Inst Water Sci, Jiangxi Prov Key Lab Water Resources & Environm P, Nanchang, Peoples R China
3.Hubei Univ, Wuhan, Peoples R China
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