【摘要】 2015—2018年在8个采样断面采用规范的方法连续四年监测了额尔齐斯河流域鱼类群落结构。结果表明:额尔齐斯河流域鱼类群落的总体多样性较高,但是,福海以及可可托海鱼类群落多样性较低。额尔齐斯河流域鱼类组成从上游到下游有明显的变化。鱼类群落结构相似性分析显示:克兰河、布尔津以及冲乎尔三个地区的鱼类群落具有较高的相似性,哈巴河和185团河段的鱼类群落具有较高的相似性。调查结果显示,外来种麦穗鱼已在额尔齐斯河流域形成一定规模,对土著鱼类在不同程度上造成威胁。更多还原

【Abstract】 Fish community structure was been monitored in eight sampling sections of Ertis River basin for four consecutive years from2015 to 2018 by standard methods. The results showed that there wholly was high diversity of fish community in Ertix River, with but low diversity in Fuhai and Koktoghay areas. The fish composition was been shown to be obviously changed from the upstream to the downstream along the Ertix River. The similarity analysis showed that the fish community was high similarity among Crane River,Burqin and Chonghur, with the high similarity of fish community between Habahe and the 185-regiment sections. It was also been found that exotic fish topmouth gudgeon Pseudorasbora parva had formed a certain scale in the Ertix River, which was a great threaten to the native fishes.更多还原