您好，欢迎访问中国水产科学研究院 机构知识库！
中国水产科学研究院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Longitudinal drifting pattern of larval assemblages in the lower reach of the Yangtze River: Impact of the floodplain lakes and conservation implementation

文献类型： 外文期刊

作者： Ren, Peng 1 ; Hou, Gang 3 ; Schmidt, Bjorn, V 4 ; Fang, Dian 1 ; Xu, Dongpo 1 ;

作者机构： 1.Nanjing Agr Univ, Wuxi Fisheries Coll, Wuxi, Jiangsu, Peoples R China

2.Dongying Res Inst Oceanog Dev, Dongying, Peoples R China

3.Guangdong Ocean Univ, Coll Fisheries, Zhanjiang, Peoples R China

4.Texas A&M Univ Commerce, Dept Biol & Environm Sci, Commerce, TX USA

5.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Wuxi, Jiangsu, Peoples R China

关键词： conservation and management; floodplain lakes; larval assemblages; lateral connectivity; longitudinal gradient; lower reach Yangtze River

期刊名称：ECOLOGY OF FRESHWATER FISH （ 影响因子：2.039； 五年影响因子：2.052 ）

ISSN： 0906-6691

年卷期：

页码：

收录情况： SCI

摘要： Floodplain lakes are significant lateral habitats that play an important role in structuring larval fish assemblages in large river-floodplain ecosystems. The abundance of floodplain lakes, including both naturally connected and main stem-isolated lakes, declines in a downstream direction in the lower reach of the Yangtze River, forming a longitudinal reduction gradient. We investigated whether this longitudinal reduction gradient of floodplain lakes is an essential driver of the larval fish assemblage patterns in the river. Drifting larval fish were investigated weekly during the prevailing spawning season both in 2014 and 2015 among three locations at Wangjiang (WJ), Zhenjiang (ZJ) and Nantong (NT). Thirty-four species belonging to 28 genera and eight families were identified. The number and abundances of collected species, the reproduction duration for dominant species and the niche breadth of dominant species all exhibit a longitudinal decrease (WJ > ZJ > NT) in the downstream direction. Additionally, the bloom of larval fish tended to occur earlier at WJ than at ZJ and NT. We suggest that these results reflect the crucial effect of floodplain lake distribution in shaping the longitudinal distribution pattern of larval assemblages. Both natural connected lakes and isolated lakes (with irregular connectivity patterns) play a crucial role in recruitment success of freshwater fish in the system. Hence, conservation and management approaches for fish resources should be concentrated on restoring and maintaining river-lake connectivity in the upstream sections of the lower reach of the Yangtze River.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：中国水产科学研究院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台