The habitat type and trophic state determine benthic macroinvertebrate communities in lowland shallow lakes of China

  • Zhixin Hu Nanjing University, China.
  • Xu Sun Nanjing University, China.
  • Yongjiu Cai Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, China.
  • Liyun Guo Nanjing University, China.
  • Qiankun Chen Nanjing University, China.
  • Tao Liu Nanjing University, China.
  • Fei Shi Nanjing University, China.
  • Liuyan Yang | yangly@nju.edu.cn Nanjing University, China.

Abstract

Benthic macroinvertebrates play important roles in shallow lake ecosystems. Several studies based on qualitative comparisons of the amount of macrophytes were carried out to relate benthic macroinvertebrate assemblages to habitat conditions in shallow lakes. Our main aim was to analyze the effects of habitat type and trophic state on taxonomic composition and abundance of benthic macroinvertebrates in lowland shallow lakes based on quantitative classification of habitat types. The benthic macroinvertebrate assemblages were investigated in eight shallow lakes of eastern China in four seasons. A total of 33 species was collected from these lakes, including four Oligochaeta, eight Chironomidae, eight Gastropoda, four Bivalvia and nine other miscellaneous species. According to the ratio of the dry weight of macrophytes to the dry weight of phytoplankton, the study lakes were separated into three lake types; macrophyte-dominated, transitional, and algae-dominated regions. The total abundance of macroinvertebrates was significantly higher in the group of algae-dominated regions than in the macrophyte-dominated regions. Scrapers had the highest abundance in the macrophyte-dominated regions. Univariate and multivariate analyses results showed that abundance, biomass and characteristic species of benthic macroinvertebrates were affected by their habitat types. The abundance and biomass of macroinvertebrates showed significant positive correlations with the trophic state index (TSI). TSI and turbidity were significantly correlated with DC1 (Axis 1 of detrended correspondence analysis), while Chlorophyll a and the ratio of the dry weight of macrophytes to the dry weight of phytoplankton were significantly correlated with DC2. The findings indicated that the habitat type and trophic state were the key factors determining the structure of macroinvertebrate assemblages in lowland shallow lakes. Our study was one of the few studies that had demonstrated the distinct influence of habitat type on macroinvertebrate assemblages in shallow lakes according to the ratio of the dry weight of macrophytes to the dry weight of phytoplankton.

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Author Biographies

Zhixin Hu, Nanjing University
State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment
Xu Sun, Nanjing University
State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment
Yongjiu Cai, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences
State Key Laboratory of Lake Science and Environment
Liuyan Yang, Nanjing University
State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment
Published
2016-02-04
Info
Issue
Section
Original Articles
Supporting Agencies
Major Science & Technology Program for Water Pollution Control and Treatment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Natural Science Foundation of Jiangsu Province.
Keywords:
Habitat type, eutrophication, benthic macroinvertebrate, shallow lake, biodiversity,
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How to Cite
1.
Hu Z, Sun X, Cai Y, Guo L, Chen Q, Liu T, Shi F, Yang L. The habitat type and trophic state determine benthic macroinvertebrate communities in lowland shallow lakes of China. J Limnol [Internet]. 2016Feb.4 [cited 2021May17];75(2). Available from: https://jlimnol.it/index.php/jlimnol/article/view/jlimnol.2016.1220