Ecological studies are essential to understanding life. Especially on the issue of biological diversity and evolution. Insect black fly is an important component of the aquatic ecosystem. They are often found in large numbers and are the main constituents of large invertebrates. Flow in aquatic systems (Cummins 1987), so the black fly, insects are an important part of the process flow of nutrients in an ecosystem (Malmqvist et al. 2004).
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