湖泊科学Issue(6)：1371-1380,10.
太湖流域河流鱼类群落的时空分布∗
Spatial and temporal patterns of stream fish assemblages within Taihu Basin
摘要
Abstract
Identifying the distribution of species composition and their abundance of fishes is basic for the conservation and manage⁃ment of fish diversity. Based on the data collected from 57 stream segments within the Taihu Lake Basin during October 2013 and May 2014, we examined how the stream fish assemblages vary spatially and seasonally in this study area. A total of 5051 individu⁃als representing 46 species were collected, among which Cyprinidae fishes are amounted to 26 species. Fish diversity in October was significantly higher than that in May, and fish assemblage structures also significantly differed seasonally. Significant variations among different subbasins were observed for both fish species diversity and assemblage structures. The Yanjiang and Zhaoge subba⁃sins had relatively lower species diversity, while those in the Nanhe and Tiaoxi subbasins were relatively higher. Assemblage struc⁃tures in the Huangpujiang subbasin showed significantly difference from those in the Zhaoge, Tiaoxi and Yanjiang subbasins. When the spatial variations in fish assemblages among ecoregions were considered, fish assemblage structures, not species diversity, showed significantly variation between two ecoregions at level⁃1;while both assemblage structures and species diversity differed sig⁃nificantly among four ecoregions at level⁃2. This among⁃ecoregion variations in assemblage structures resulted from the spatial distri⁃bution of some dominant fishes, such as Hemiculter leucisculus, Carassius auratus and Pseudobrama simoni, and some rare fishes, such as Zacco platypus, Phoxinus oxycephalus, Oryzias latipes sinensis and Gambusia affinis.关键词
太湖流域/河流鱼类/群落结构/物种多样性/时空分布Key words
Taihu Basin/stream fish/assemblage structure/species diversity/spatio-temporal pattern引用本文复制引用
李其芳,严云志,储玲,朱仁,高俊峰,高永年..太湖流域河流鱼类群落的时空分布∗[J].湖泊科学,2016,(6):1371-1380,10.基金项目
国家水体污染控制与治理科技重大专项（2012ZX07501-001-03）和国家自然科学基金项目（31172120）联合资助． （）
