TY JOUR TI SOME DATA ON NEMATODA FAUNA IN MEADOW CENOSES OF THE UPPER VOLGA BASIN KW nematode fauna KW meadow cenoses KW taxonomic analysis KW ecological-trophic analysis JO Transactions of Papanin Institute for Biology of Inland Waters RAS AU Gagarin, V.G. AU Butorina, N.N. PY 2025 IS 0 PB Papanin Institute for Biology of Inland Waters Russian Academy of Sciences