caa a22 4500 606226648 CHVBK 20210128101154.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s10641-014-0239-6 doi (NATIONALLICENCE)springer-10.1007/s10641-014-0239-6 Variation in fish assemblages across impoundments of low-head dams in headwater streams of the Qingyi River, China: effects of abiotic factors and native invaders [Elektronische Daten] [Ling Chu, Wenjian Wang, Ren Zhu, Yunzhi Yan, Yifeng Chen, Lizhu Wang] Identifying and explaining the pattern of how stream fish assemblages vary spatially are basic for the conservation and management of fish species diversity. Although low-head dams may facilitate the native invasions of generalist fishes to headwater streams, few studies have evaluated the impacts of the native invaders on indigenous fish assemblages. In this study, we collected 12 indigenous and 13 native-invasive fish species and measured physical habitats and dam dimensions from 62 impoundments of low-head dams located on headwater streams of the Qingyi River, China. We used linear regression and canonical correspondence analyses to evaluate how habitat and dam variables influenced native-invasive fish assemblages. Our results indicated that invasive fish species richness and abundance were related to elevation and upstream and downstream dam abundances, and their assemblage structures were influenced by substrate heterogeneity, dam height, and upstream and downstream dam abundances. We also used similar analyses to examine how habitat, dam, and invasive fish variables affected indigenous fish assemblages. Our results showed that indigenous fish species richness was correlated with substrate heterogeneity and dam height. However, indigenous fish assemblage structures were not only influenced by dam height, substrate, and downstream dam abundance, but also by invasive fishes. The abundance of one invasive species, Pseudorasbora parva, showed a strong negative influence on indigenous fish assemblages. Our study suggests that the combination of changes in abiotic factors and biotic structure and process following dam-building may determine the indigenous fish assemblages in the impoundments of low-head dams within headwater streams. Springer Science+Business Media Dordrecht, 2014 Anthropogenic perturbation nationallicence Native invasion nationallicence Assemblage structure nationallicence Species diversity nationallicence Highland headwaters nationallicence Chu Ling College of Life Sciences, Anhui Normal University; Provincial Key Laboratory of Biotic Environment and Ecological Safety in Anhui, 241000, Wuhu, China aut Wang Wenjian College of Life Sciences, Anhui Normal University; Provincial Key Laboratory of Biotic Environment and Ecological Safety in Anhui, 241000, Wuhu, China aut Zhu Ren College of Life Sciences, Anhui Normal University; Provincial Key Laboratory of Biotic Environment and Ecological Safety in Anhui, 241000, Wuhu, China aut Yan Yunzhi College of Life Sciences, Anhui Normal University; Provincial Key Laboratory of Biotic Environment and Ecological Safety in Anhui, 241000, Wuhu, China aut Chen Yifeng Institute of Hydrobiology, Chinese Academy of Sciences, 430072, Wuhan, China aut Wang Lizhu Institute for Fisheries Research, Michigan Department of Natural Resources and University of Michigan, 212 Museums Annex, 48109, Ann Arbor, MI, USA aut Environmental Biology of Fishes Springer Netherlands 98/1(2015-01-01), 101-112 0378-1909 98:1<101 2015 98 10641 https://doi.org/10.1007/s10641-014-0239-6 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10641-014-0239-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chu Ling College of Life Sciences, Anhui Normal University; Provincial Key Laboratory of Biotic Environment and Ecological Safety in Anhui, 241000, Wuhu, China aut NATIONALLICENCE 700 1- Wang Wenjian College of Life Sciences, Anhui Normal University; Provincial Key Laboratory of Biotic Environment and Ecological Safety in Anhui, 241000, Wuhu, China aut NATIONALLICENCE 700 1- Zhu Ren College of Life Sciences, Anhui Normal University; Provincial Key Laboratory of Biotic Environment and Ecological Safety in Anhui, 241000, Wuhu, China aut NATIONALLICENCE 700 1- Yan Yunzhi College of Life Sciences, Anhui Normal University; Provincial Key Laboratory of Biotic Environment and Ecological Safety in Anhui, 241000, Wuhu, China aut NATIONALLICENCE 700 1- Chen Yifeng Institute of Hydrobiology, Chinese Academy of Sciences, 430072, Wuhan, China aut NATIONALLICENCE 700 1- Wang Lizhu Institute for Fisheries Research, Michigan Department of Natural Resources and University of Michigan, 212 Museums Annex, 48109, Ann Arbor, MI, USA aut NATIONALLICENCE 773 0- Environmental Biology of Fishes Springer Netherlands 98/1(2015-01-01), 101-112 0378-1909 98:1<101 2015 98 10641