瓦埠湖丰、枯水期大型底栖动物群落结构特征

Community structure of macrozoobenthos in wet and dry seasons of Wabu Lake

为了解瓦埠湖底栖动物群落结构特征,于2012年丰水期(6月)和枯水期(11月)对瓦埠湖河道及主体湖区19个采样点进行了调查。共采集到底栖动物28种,其中寡毛类10种,软体动物4种,水生昆虫11种,其他3种。丰水期检出23种,其中寡毛类9种,软体动物3种,水生昆虫8种,其他3种。枯水期检出14种,其中寡毛类4种,软体动物3种,水生昆虫6种,其他1种。整体来看,瓦埠湖底栖动物种类组成中,水生昆虫是第1大类群(39.29%),其次是寡毛类(35.71%),软体动物和其他所占比例较小。

In order to explore the community structure of the zoobenthos in Wabu Lake, 19 sampling sites in the lake and nearby rivers were investigated in both wet season（June） and dry season（November） in 2012. A total of 28 species were identified, including 10 oligochaetes, 4 mollusks, 11 species of aquatic insects and 3 species of other faunas. A total of 23 species were identified during the wet season, including 9 oligochaetes, 3 mollusks, 8 species of aquatic insects and 3 species of other faunas. A total of 14 species were identified during the dry season, including 4 oligochaetes, 3 mollusks, 6 species of aquatic insects and 1 species of other faunas. In conclusion, of all the zoobenthos in Wabu Lake, aquatic insects have the largest variety of categories （39. 29%）, followed by oligochaetes （35.71%）, leaving mollusks and the others taking up very small percentages.