Abstract

This article presents the results of a study of the species and trophic structure of the macrozoobenthos community in the littoral zone of mesotrophic Lake Obsterno (Republic of Belarus) having different macrophyte beds (Chara, reeds, and lily). The results of ANOVA have shown the influence of studied biotopes on the number of species and Shannon index. The number of species increased from summer to autumn, but the Shannon index was minimal in the middle of summer. Significant differences in species abundance between biotopes have been obtained for oligochaetes, chironomids, active filter feeders, and predators. There are no differences for Ephemeroptera and Trichoptera. The mean values of species similarity for the studied period are 68.9, 74.1, and 70.0% for reeds, lily, and Chara, respectively. The trophic similarity between groups were 66.3, 54.1, and 69.7%. Significant differences between species and trophic similarity are noted only for the lily beds. The values of variability of species structure during the period are higher than trophic structure; i.e., trophic structure is more stable when compared with species structure.

中文翻译：

---

中营养湖泊中不同类型滨海带大型动物的种类和营养结构

摘要

本文介绍了对具有不同大型植物床（甜菜，芦苇和百合）的中营养营养型奥布斯特诺湖（白俄罗斯共和国）的沿海地区大型动物的物种和营养结构的研究结果。方差分析的结果表明，研究的生物群落对物种数量和香农指数的影响。从夏季到秋季，物种数量增加，但夏季中期的香农指数最低。对于寡纲动物，鸟纲，活性滤食者和捕食者而言，生物群落之间物种丰富度的显着差异。phe翅目和毛鳞翅目没有差异。在研究期间，芦苇，百合和甜菜的物种相似性平均值分别为68.9％，74.1和70.0％。两组之间的营养相似度为66.3，54.1和69.7％。物种之间的显着差异和营养相似性仅在百合花床上有所记录。在此期间，物种结构的变异性值高于营养结构。也就是说，与物种结构相比，营养结构更稳定。