论文
论文标题: Longitudinal and seasonal patterns of fish assemblage structure in the Zhougong River, Sichuan Province, southwest China
作者: Wang, Xiaodong; Li, Shu; Price, Megan; Lei, Yi; Wu, Bo; Liu, Kan; Song, Zhaobin
出版刊物: ECOLOGICAL INDICATORS
出版日期: DEC
出版年份: 2019
卷/期:
DOI: 10.1016/j.ecolind.2019.105656
论文摘要: The Zhougong River is one of the most important tributaries of the Qingyi River in upper Yangtze River drainage, Sichuan Province, southwest China. The river has been dammed in several places by hydroelectric stations and thus, we aimed to characterize the longitudinal and seasonal patterns of fish assemblage structure in it and whether anthropogenic perturbations have impacted fish assemblages. An extensive survey of fish was conducted in spring (April), summer (August) and autumn (November) of 2015, and winter (February) of 2016 at a total of 18 sampling locations across the river's watershed. It was found that fish abundance, richness and Shannon-Wiener diversity all increased from upstream to downstream. Fish assemblage showed significant spatial differences between the upstream, midstream and downstream, while there were no differences between seasons as was expected. The spatial variation in the abundance of Rhodeus sinensis, Schizothorax prenanti, Pseudorasbora parva, Zacco platypus and Abbottina obtusirostris were considered to contribute most to the spatial pattern in fish assemblage. The canonical correspondence analysis (CCA) results revealed that spatial variations of fish community in the Zhougonng River were significantly correlated with water velocity, total phosphorus and water depth. Our findings indicate that spatial differences and no seasonal change in fish assemblage were partially attributed to the physicochemical changes caused by cascade hydroelectric dams (e.g., channel blocking, hydrological alterations) and water pollution (e.g., phosphorus) and it is also likely that overfishing has exacerbated impacts. We recommend that pollution prevention, dam removal, modifying dam ecological operations and fishery control may effectively lessen the impacts on fish biodiversity in the Zhougong River.
== 实验室与学会 ==
  • == 实验室与学会 ==
  • 水产品种创制与高效养殖全国重点实验室
  • 中国科学院藻类生物学重点实验室
  • 农业部淡水养殖病害防治重点实验室
  • 武汉白暨豚保护基金会
  • 湖北省海洋湖沼学会
  • 中国动物学会原生动物学分会
  • 中国动物学会斑马鱼分会
  • 湖北省暨武汉动物学会
  • 中国水产学会鱼病学专业委员会
  • 中国鱼类学会
== 平台建设 ==
  • == 平台建设 ==
  • “一带一路”海域赤潮数据库
  • 国家水生生物种质资源库
  • 国家斑马鱼资源中心
  • 中国科学院淡水藻种库
  • 中国科学院武汉生命科学大型仪器区域中心
  • 湿地生态系统观测研究野外站联盟
  • 中国科学院水生生物研究所分析测试中心
  • 中国科学院超级计算武汉分中心
  • 水生生物博物馆
== 相关网站推荐 ==
  • == 相关网站推荐 ==
  • 中国科学院
  • 农业农村部
  • 科学技术部
  • 生态环境部
  • 国家自然科学基金委员会
  • 中国科学院武汉分院
  • 湖北省科学技术厅
  • 湖北省生态环境厅
  • 湖北省农业农村厅