Effects of loss of lateral hydrological connectivity on fish functional diversity

doi:10.1111/cobi.13142

CORC > 水生生物研究所 > 中科院水生所知识产出（2009年前） > 淡水生态学研究中心 > 期刊论文

	Effects of loss of lateral hydrological connectivity on fish functional diversity
	Liu, Xueqin; Wang, Hongzhu
刊名	CONSERVATION BIOLOGY
	2018-12-01
卷号	32 期号:6 页码:1336-1345
关键词	biodiversity conservation fish assemblage functional alpha diversity functional beta diversity Yangtze River floodplain
ISSN号	0888-8892
DOI	10.1111/cobi.13142
通讯作者	Liu, Xueqin(xqliu@ihb.ac.cn)
英文摘要	Loss of lateral hydrological connectivity (LHC) is a major cause of biodiversity decline in river floodplains, yet little is known about its effects on aquatic functional diversity in these ecosystems. We quantified functional alpha and beta diversity of fish assemblages in Yangtze River floodplain lakes and explored their responses to loss of LHC with generalized linear mixed models. Functional richness was much lower in lakes that were not connected to the Yangtze River (i.e., disconnected lakes), where functional evenness and divergence were higher. LHC was the most important factor shaping fish diversity patterns in this region. Predicted reductions in functional richness and taxonomic richness due to LHC loss were higher for functional richness (0.47-0.82) than taxonomic richness (0.32) for all species assemblages except nonmigratory species. The distribution of functional strategies of migratory and nonmigratory fishes was highly uneven throughout the floodplain. Taxonomic beta diversity was much higher than functional beta diversity. The former was due mainly to spatial turnover (73.6-83.8%), which suggested that dissimilarity of diversity among fish assemblages was largely induced by species replacement. The latter was induced by the nestedness-resultant component of overall beta diversity (70.7-86.0%), which indicated a high degree of function loss without replacement. Both taxonomic and functional beta diversity were higher in disconnected lakes, where they were significantly correlated with fishing activity and water quality, than in river-connected lakes. We showed for the first time the effects of loss of LHC on fish functional diversity in large river floodplains. We found a serious decline of fish functional richness in the Yangtze floodplain, and functional diversity remained highly vulnerable to loss of LHC even though this is a species-rich ecosystem.
资助项目	National Natural Science Foundation of China[41371054] ; National Basic Research Program of China[2015CB458900]
WOS关键词	RIVER-FLOODPLAIN CONNECTIVITY ; BETA-DIVERSITY ; COMMUNITY ; CONSERVATION ; BIODIVERSITY ; RESTORATION ; REDUNDANCY ; RESPONSES ; REVEALS ; THREATS
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
语种	英语
出版者	WILEY
WOS记录号	WOS:000449856900011
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Basic Research Program of China ; National Basic Research Program of China ; National Basic Research Program of China ; National Basic Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Basic Research Program of China ; National Basic Research Program of China ; National Basic Research Program of China ; National Basic Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Basic Research Program of China ; National Basic Research Program of China ; National Basic Research Program of China ; National Basic Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Basic Research Program of China ; National Basic Research Program of China ; National Basic Research Program of China ; National Basic Research Program of China
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/29018]
专题	水生生物研究所_淡水生态学研究中心_期刊论文
通讯作者	Liu, Xueqin
作者单位	Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Liu, Xueqin,Wang, Hongzhu. Effects of loss of lateral hydrological connectivity on fish functional diversity[J]. CONSERVATION BIOLOGY,2018,32(6):1336-1345.
APA	Liu, Xueqin,&Wang, Hongzhu.(2018).Effects of loss of lateral hydrological connectivity on fish functional diversity.CONSERVATION BIOLOGY,32(6),1336-1345.
MLA	Liu, Xueqin,et al."Effects of loss of lateral hydrological connectivity on fish functional diversity".CONSERVATION BIOLOGY 32.6(2018):1336-1345.