论文
论文标题: A pulse-stairstep longitudinal pattern of larval fish assemblages in a channelized floodplain river downstream of a dam: dominant influences of major tributaries with a confluence refuge concept
作者: Cao, Juan; Cheng, Fei; Wang, Zhen; Song, Yiqing; Xie, Songguang
出版刊物: HYDROBIOLOGIA
出版日期: JUN 20
出版年份: 2023
卷/期:
DOI: 10.1007/s10750-023-05281-9
论文摘要: We investigated larval fish assemblages in the Yangtze River downstream of the Three Gorges Dam to test the influence of tributary inputs on the longitudinal recovery pattern of the assemblages from negative impacts of dam regulation. Larval fish assemblages showed a pulse-stairstep longitudinal pattern. Specifically, two pulses of dramatically increased abundance of larval fish occurred immediately downstream of the confluences of Dongting Lake and Hanjiang River. Three stairsteps of larval fish abundance were observed, which were separated by the confluences of Hanjiang River and the Poyang Lake watershed inputs. Larval fish abundance kept relatively constant within a stairstep and increased apparently in the downstream direction among the stairsteps. While fish assemblages upstream of the confluence of Hanjiang River were highly variable, whereas those downstream were relatively similar. Our results demonstrated that tributary inputs shaped the longitudinal recovery pattern of the larval fish assemblages. We proposed the confluence refuge concept suggesting that confluence areas provide refuges and nursery grounds for fishes in the suboptimal river section negatively impacted by the dam. Hence, conserving the confluence areas of major tributaries and maintaining lateral connectivity of floodplain lakes are critical for fishery resource enhancement in such dam-regulated and highly channelized floodplain rivers.
== 实验室与学会 ==
  • == 实验室与学会 ==
  • 淡水生态与生物技术国家重点实验室
  • 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