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生态学杂志 ›› 1999, Vol. ›› Issue (3): 54-58,74.

• 研究报告 • 上一篇    下一篇

螺类与着生藻类的相互作用及其对沉水植物的影响

由文辉   

  1. 华东师范大学环境科学系, 上海200062
  • 收稿日期:1997-03-14 修回日期:1997-05-19 出版日期:1999-06-10

Snail-epiphyton Interaction and Its Effects on Submerged Macrophytes

You Wenhui   

  1. Department of Environmental Science, East China Normal University, Shanghai 200062
  • Received:1997-03-14 Revised:1997-05-19 Online:1999-06-10

关键词: 高山植物, 光合机构, 光保护, 适应机制

Abstract: Epiphyton-feeding snails are often a conspicuous feature of the invertebrate fauna associated with submerged freshwater macrophytes. This paper reviewed the different interactions among snail, epiphyton and macrophytes.Studies on grazing by freshwater snail show that snails have a great impact on the biomass, productivity and species composition of epiphytic communities. Direct effects of the grazing on living macrophytes are probably of minor importance, but snails have a significant indirect effect on macrophytes by reducing the detrimental impact of epiphyton(e.g. shading and competition for nutrients). Predaters of snails can have a mediating effect on snail-epiphyton-macrophyte interactions, both through a direct predator-prey relationship(reducing the density of snails)and by inducing a habitat displacement of the snail.

Key words: alpine plant, photosynthetic apparatus, photo-protection, adaptation mechanism.