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Responses of macrozoobenthos communities to changes in submerged macrophyte biomass in 19 temperate lakes in China

文献类型： 外文期刊

作者： Zhu, Hao 1 ; Cheng, Shuiping 3 ; Zhang, Xiaoke 4 ; Liu, Xingguo 1 ; Che, Xuan 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Fishery Machinery & Instrument Res Inst, Shanghai 200082, Peoples R China

2.Minist Agr & Rural Affairs, Key Lab Fishery Equipment & Engn, Shanghai 200082, Peoples R China

3.Tongji Univ, Coll Environm Sci & Engn, Key Lab Yangtze River Water Environm, Minist Educ, Shanghai 200082, Peoples R China

4.Anqing Normal Univ, Res Ctr Aquat Organism Conservat & Water Ecosyst, Coll Life Sci, Anqing 246133, Peoples R China

关键词： Macrozoobenthos; Submerged macrophytes; Taxonomic and functional group; Ecological restoration; Lake management; Cascade effect

期刊名称：ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH （ 影响因子：5.19； 五年影响因子：5.053 ）

ISSN： 0944-1344

年卷期：

页码：

收录情况： SCI

摘要： Macrozoobenthos and submerged macrophytes interact closely. However, studies in China have focused on the middle and lower reaches of the Yangtze River, where shallow lakes are concentrated, rather than on temperate lakes. To clarify the responses of taxonomic and functional groups of macrozoobenthos in temperate lakes to changes in submerged macrophyte biomass (B-Mac) on a large scale, 19 temperate lakes within Baiyangdian Lake were investigated in this study. The B-Mac differed greatly across the 19 lakes, and Potamogeton crispus was the dominant species. According to the B-Mac, the 19 lakes were divided into 4 groups. One-way analysis of variance and Pearson correlation analysis showed that the water environmental parameters were different among the 4 groups, and the B-Mac was significant correlated with all the physical and chemical parameters of water bodies (except for water depth). Forty-one taxa of macrozoobenthos were identified in the 19 lakes, with oligochaetes, Hirudinea, gastropods, crustaceans, chironomid larvae, and aquatic insects (excluding chironomid larvae) represented by 9, 1, 4, 2, 19, and 6 species, respectively. Chironomid larvae and oligochaetes dominated by density, and gastropods and chironomid larvae dominated by biomass. Canonical correspondence analysis showed that the B-Mac was the most important factor affecting the macrozoobenthos community structure in group 1 to group 4. Macrozoobenthos with low pollution tolerance values were mainly found in areas with high B-Mac, while species with high pollution tolerance values were mainly distributed in areas with low B-Mac and high nutrient contents. Different taxonomic and functional groups of macrozoobenthos responded differently to changes in B-Mac. As B-Mac increased, density and biomass of oligochaetes and chironomid larvae tended to decrease, while those of gastropods and aquatic insects tended to first decrease and then increase. Collectors had more species than any other functional group in group 1 to group 4. As B-Mac increased, density and biomass of collectors gradually decreased, while density of predators, shredders, and scrapers tended to first decrease and then increase.

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