Fish Community Composition and Habitat Use in the Eg-Uur River System, Mongolia
Fish Community Composition and Habitat Use in the Eg-Uur River System, Mongolia
复制标题
蒙古埃格乌尔河水系鱼类群落组成和栖息地利用
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
V. Zanden
中科院分区：
文献类型：
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作者：
N. Mercado‐Silva;David J. Gilroy;M. Erdenebat;Z. Hogan;S. Chandra;M. Jake;V. Zanden
蒙古河流及其鱼类群落受到人类活动的严重影响。然而，一些系统的偏远允许保护独特的鱼类动物群，包括哲罗鱼的强大种群。保护H。因此，要了解群落中其他鱼类的组成和生态，使用多重采样技术，直接观察，和现有的文献，我们评估了组成，相对丰度和生态属性的鱼类在Eg-Uur流域（Selenge盆地）。我们收集了流域中已知的12种中的6种。Phoxinus cf. phoxinus和Lota lota分别是最丰富和最不丰富的物种。我们没有发现H。这表明对幼鱼的丰度低或栖息地要求未知。我们比较了不同采样技术的有效性（电捕鱼产生最高的物种丰富度），构建了四个物种的长度-重量关系，并确定了艾德的生态属性（即，营养行会，首选栖息地）的居民鱼类。
Mongolian rivers and their fi sh communities have suffered severe impacts from anthropogenic activities. However, the remoteness of some systems has allowed for the conservation of unique fi sh faunas, including robust populations of Hucho taimen. Conservation of H. taimen requires understanding the composition and ecology of other fi shes in the community. Using multiple sampling techniques, direct observation, and existing literature, we assessed the composition, relative abundance, and ecological attributes of fi shes in the Eg-Uur watershed (Selenge basin). We collected 6 of 12 species known in the watershed. Phoxinus cf. phoxinus and Lota lota were the most and least abundant species, respectively. We failed to detect H. taimen, indicating low abundance or unknown habitat requirements for juveniles. We compared the effectiveness of different sampling techniques (with electrofi shing producing the highest species richness), constructed length-weight relationships for four species, and identifi ed ecological attributes (i.e., trophic guild, preferred habitat) for resident fi shes.