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东湖放养鱼类时空分布的水声学研究
Authors
谭细畅,夏立启,立川贤一,谢平,常剑波
Publication date
1 January 2002
Publisher
Abstract
2 0 0 0年 ,用鱼探仪逐月对东湖鱼类的空间分布进行探测的结果表明 :东湖鱼类主要分布在 1 5m以下的水层 ,1 5m以上与 1 5m以下水层的鱼类密度分布存在显著差异。此外 ,东湖中不同区域的鱼类密度分布亦有显著性差异。统计分析显示 ,这种水平分布差异与水深、离岸距离等因素没有明显的相关 ,可能主要由群聚行为引起。由不同月份群聚程度不一致 ,推测水温的变化可能会影响鱼类的群聚行为。污水排放对鱼类空间分布也可能有一定的影响
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Institute of Hydrobiology, Chinese Academy Of Sciences
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oai:ir.ihb.ac.cn:152342/2736
Last time updated on 15/03/2018