生态学杂志2012，Vol.31Issue(5)：1186-1193,8.
太湖湖滨生态修复区大型底栖动物群落结构及梯度分布
Community structure and gradient distribution of macrobenthos in a riparian ecological restoration pilot area of Taihu Lake
摘要
Abstract
In order to understand the relationships between habitat gradient and macrobenthos composition, a field investigation was conducted on the macrobenthos community in three different habitats, i. e. , riparian zone with emerged vegetation (zone I ) , lake-bay zone with submerged vegetation ( zone II ) , and open water zone outside the weir (zone III ), in a riparian ecological restoration pilot area of Gonghu Bay, Taihu Lake in 2010-2011. A total of 18 macrobenthos species were identified, of which, 7 species only existed in one habitat type, and 5 of the other 11 species had significant difference in abundance across the habitat gradient. As for the distribution of the functional feeding groups of macrobenthos, significant differences were observed among the habitat types. Scrapers had the highest relative abundance in zone I , while gather-collectors and filter-collectors had the highest relative abundance in zone II and zone III, respectively. The redundancy analysis on the effects of water quality on the macrobenthos composition showed that annelids and aquatic insects were positively correlated with water DO, NO3--N, and PO43--P, while mollusks were negatively correlated with water NO3--N and PO43--P. Some mollusks were able to endure the stress from low DO, and correlated positively with water NH4+-N and COD. Overall, the differences in the hydraulic conditions, water quality, and substrates among the three habitat types had great effects on the distribution of macrobenthos, leading to the formation of three macrobenthos communities with significant differences in life form and feeding attributes.关键词
滨岸带/大型底栖动物/生境梯度/摄食功能类群/冗余分析Key words
riparian area/ macrobenthos/ habitat gradient/ functional feeding group/ redundancy analysis.分类
生物科学引用本文复制引用
沈忱,刘茂松,徐驰,汤浩,王磊,黄成..太湖湖滨生态修复区大型底栖动物群落结构及梯度分布[J].生态学杂志,2012,31(5):1186-1193,8.基金项目
国家林业局林业公益性行业科研专项(200904001)和国家自然科学基金项目(30870433和40801068)资助. （200904001）
