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题名: Functional and Taxonomic Differentiation of Macrophyte Assemblages Across the Yangtze River Floodplain Under Human Impacts
作者: Zhang, Min1; Molinos, Jorge Garcia2, 3; Zhang, Xiaolin4; Xu, Jun4
关键词: beta-diversity ; freshwater macrophyte ; functional diversity ; functional richness ; taxonomic dissimilarity ; historical change
刊名: FRONTIERS IN PLANT SCIENCE
发表日期: 2018-03-27
DOI: 10.3389/fpls.2018.00387
卷: 9
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Plant Sciences
研究领域[WOS]: Plant Sciences
英文摘要: Human activities and the consequent extirpations of species have been changing the composition of species assemblages worldwide. These anthropogenic impacts alter not only the richness of assemblages but also the biological dissimilarity among them. One of the main gaps in the assessment of biodiversity change in freshwater ecosystems is our limited understanding regarding how taxonomic and functional facets of macrophyte assemblages respond to human impacts on regional scales. Here, we assess the temporal (before 1970s against after 2000s) changes in taxonomic and functional richness and compositional dissimilarities, partitioned into its turnover and nestedness components, of freshwater macrophyte assemblages across the floodplain lakes of the Yangtze River in China. We found that functional and taxonomic assemblage differentiation occurred simultaneously under increasing human impact, concomitant to a general decrease in functional and taxonomic richness. However, this effect weakened when the historical level of taxonomic dissimilarity among assemblages was high. Macrophyte species with large dispersal range and submersed life form were significantly more susceptible to extirpation. The impact of human activities on differentiation was complex but habitat loss and fishery intensity were consistently the main drivers of assemblage change in these lakes, whereas water quality (i.e., light pollution and nutrient enrichment) had weaker effects. Further, macrophyte taxonomic and functional differentiation was mainly driven by the nestedness component of dissimilarity, accounting for changes in assemblage composition related to changes in species richness independent of species replacement. This result, markedly different from previous studies on freshwater fish assemblages conducted in these lakes, represents a novel contribution toward achieving a more holistic understanding of how human impacts contribute to shape community assemblages in natural ecosystems.
关键词[WOS]: EUROPEAN FISH ASSEMBLAGES ; BETA-DIVERSITY ; SPECIES RICHNESS ; FRESH-WATER ; COMMUNITY ECOLOGY ; PLANT DIVERSITY ; HOMOGENIZATION ; ECOSYSTEMS ; PACKAGE ; LAKES
语种: 英语
项目资助者: National Natural Science Foundation of China(31370437) ; Water Pollution Control and Management Project of China(2012ZX07101-001) ; Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT)
WOS记录号: WOS:000428384300001
ISSN号: 1664-462X
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/50927
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.Huazhong Agr Univ, Coll Fisheries, Hubei Prov Engn Lab Pond Aquaculture, Freshwater Aquaculture Collaborat Innovat Ctr Hub, Wuhan, Hubei, Peoples R China
2.Hokkaido Univ, Arctic Res Ctr, Sapporo, Hokkaido, Japan
3.Hokkaido Univ, Global Inst Collaborat Res & Educ, Global Stn Arctic Res, Sapporo, Hokkaido, Japan
4.Chinese Acad Sci, Inst Hydrobiol, Wuhan, Hubei, Peoples R China
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