Home – Home – Jornals – Contemporary Problems of Ecology 2006 number 4

Estimation of aqueous biological resources (phytoplankton, microphytoperiphyton, zooplankton, zoobenthos and ichthyofauna) in the basin of the Podkamennaya Tunguska river, a tributary of the Enisey, was carried out. Specific composition of phytoplankton and microphytoperiphyton included 102 species and intraspecific taxons of algae, with the main contribution into the biomass from diatomaceous (90 % in phytoplankton, 75 % in microphytoperiphyton) algae. Due to high flow rates, the zooplankton does not develop and does not play any noticeable part in fish trophism. Zoobenthos is represented by 122 species and forms of bottom-dwelling animals with the largest number of species belonging to the Diptera order (39,3 %); subdominants of groups in numbers are the orders of caddies flies (21,3 %) and lake flies (13.1 %). The ichthyofauna of the Podkamenn