A primary study on relationships between subfossil chironomids and the distribution of aquatic macrophytes in three lowland floodplain lakes, China
A primary study on relationships between subfossil chironomids and the distribution of aquatic macrophytes in three lowland floodplain lakes, China
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DOI：
10.1007/s10452-014-9499-7
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发表时间：
2014-11
期刊：
影响因子：
1.8
通讯作者：
Yanmin Cao;E. Zhang;G. Cheng
中科院分区：
文献类型：
--
作者：
Yanmin Cao;E. Zhang;G. Cheng
Aquatic macrophytes act as an important substrate for zoobenthos-supporting midge communities (chironomids) that can be used for reconstructing past environmental change. This study selected three macrophyte-dominated lakes in the middle reach of the Yangtze floodplain (central China), to identify relationships between macrophyte characteristics (i.e. communities, richness and biomass) and subfossil chironomid assemblages. One-way ANOSIM tests illustrated that there were significant differences in chironomid community compositions between lakes. Most chironomid taxa were not selective of dominant macrophyte species, butCorynoneuraspecies were found to be associated with the development ofVallisneriaas revealed by SIMPER analysis. Multivariate analyses indicate that submerged plant biomass, water depth and secchi depth, conductivity and the concentration of HCO3−were significantly correlated with midge compositions. Overall, this study corroborates the existing opinions that chironomid species show little selectivity to plant type but are significantly influenced by plant density. As an exception to this general trend, we found strong associations betweenCorynoneurachironomid larvae andVallisneriamacrophytes, prompting the need for future experimental studies to confirm this association.
