Tiunova T.M., Teslenko V.A., Makarchenko M.A., Sirotsky S.E.
Вопросы рыболовства 2009; 10(3(39)): 489-499
Investigation of the benthic communities was carried out in the Zeya River Basin in eighteen rivers with different extension and thermal regime. The structure descriptions of the main component of the benthos - aquatic insects from orders of Ephemeroptera, Plecoptera, Trichoptera, and Diptera were analyzed. Total amount of the species, theirs distribution, quantitative development of biomass and level of predominance were revealed. It was shown, that the caddis flies Rhyacophila egijnica, dipterans Tipula sp., stoneflies Arcynopteryx polaris and Nemoura arctica belonged to the indicator species of the metarhithral zone in the ultra cold rivers with extension not more than 100 km. Net-winged midges Neohapalothrix manschukuensis was an indicator species of the metarhithral zone of the cold rivers more than 100 km. In the hyporhithral zone of the large temperate-cold rivers more than 500 km the mayflies and caddis flies were dominated in structure of the benthic communities on biomass.
