Community characteristics of benthic invertebrate in marsh wetlands of the Sanjiang Plain, China [三江平原沼泽湿地底栖无脊椎动物群落特征]

作者：Lu K.-L.; Wu H.-T.^*

来源：China Environmental Science, 2020, 40(2): 832-838.

• Benthic invertebrates
• Community structure
• Diversity
• The Sanjiang Plain

To explore the characteristics of community structure and species diversity of benthic invertebrates, three samplings of 6sites in marsh wetlands of the Sanjiang Plain were conducted in May, July and September, 2017. In total, 72 taxa of benthic invertebrates from 41families and 3phyla were recorded, mainly composed by aquatic insects and gastropoda. The average density of benthic invertebrates was (139.68±29.13)ind. /m2. Seasonally, the density of benthic invertebrates followed the order of autumn > spring > summer. The dominant species varied in different seasons, with the Valvata sibirica being the dominant species in three seasons. Indicator species analysis showed that Potamonectes sp. was the indicator species in spring, Lethocerus sp., Gyraulus centrifugus and Erpobdellidae sp. were the indicator species in summer, and Sgementina nitida was the indicator species in autumn. On the whole, Shannon-Wiener diversity index (H'), Pielou evenness index (J), and Margalef richness index (dM) were all higher in spring than in summer and autumn. One-way ANOVA analysis showed that there were no significant differences in Shannon-Wiener diversity index (F=1.480, p=0.259), Margalef richness index (F=0.056, p=0.946), and Pielou evenness index (F=2.038, p=0.165) among the three seasons.

• 单位
  中国科学院大学