Relative influence of local habitat and land use/cover on the taxonomic and functional organizations of fish assemblages in the Anning River, Southwest China
文献类型： 外文期刊
作者： Ma, Baoshan 1 ; Zhou, Ruihang 1 ; Zhang, Fubin 3 ; Ru, Huijun 1 ; Li, Yunfeng 1 ; Xu, Bin 1 ; Lin, Pengcheng 2 ;
作者机构： 1.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Natl Agr Sci Observing & Expt Stn Chongqing, Wuhan 430223, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
3.China West Normal Univ, Coll Environm Sci & Engn, Nanchong 637009, Peoples R China
关键词： Taxonomic groups; Functional groups; Turnover; Land use/cover; Mountain river
期刊名称：ECOLOGICAL INDICATORS （ 影响因子：6.9； 五年影响因子：6.6 ）
ISSN： 1470-160X
年卷期： 2024 年 159 卷
页码：
收录情况： SCI
摘要： To investigate the longitudinal gradient patterns and the factors influencing fish taxonomic and functional groups, a survey involving 28 sampling sites was conducted in the Anning River in November 2020 and April 2021. A total of 60 fish species were collected, and these species were classified into 4 locomotor groups and 4 trophic groups, resulting in 11 combined functional groups based on locomotor and trophic characteristics. The results of two-way cross similarity analysis (ANOSIM) revealed significant changes in both the fish taxonomic and functional groups along the longitudinal gradient, while no significant seasonal variation was observed in either group. Spatial changes in taxonomic and functional groups along the river were primarily due to turnover processes, as indicated by the similarity percentage analysis. Variance partitioning analysis demonstrated that local habitat conditions and land use/cover explained 37.56% and 41.33% of the spatial variation in taxonomic and functional organizations, respectively. Notably, the influence of landscape features on taxonomic organization was less significant than that of local habitat variables. Nevertheless, landscape conditions played a more important role than local environmental factors in explaining variations associated with functional organization. Our study helps in understanding the spatial patterns and formation mechanisms of taxonomic and functional groups driven by multiple-scale environmental factors in mountain rivers. In addition, our results showed that the response of functional groups to different scale environmental factors differ from taxonomic groups.
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