CLADOCERA AND COPEPODA CRUSTACEANS OF THE UPPER UZH RIVER (UKRAINIAN CARPATHIANS)

There are noted 39 species of plankton crustaceans (16 – Cladocera and 23 – Copepoda (Calanoida and Cyclopoida)) from 48 lenthic water bodies of the upper Uzh river. One more species of Cyclopoida is given from the publications of other authors. Faunistic novelty of these groups is 5 % for the Ukrainian Carpathians. One new species for Europe –  Sinodiaptomus sarsi (Rylov, 1923), one more for Ukraine – Eucyclops subterraneus (Graeter 1907), three ones for the Ukrainian Carpathians – Ceriodaphnia megalops Sars, 1890,  Cyclops insignis Claus, 1857 and Acanthocyclops venustus (Norman et Scott, 1906), and nine regionally rare or insufficiently known species were found during the investigations. The rarity of plankton Cladocera and Copepoda fauna is 38 % on the investigated area. Specific fauna is inherent for all the basins of the tributaries of the upper Uzh as common species are absent there. Maximal density (1288.5 thous. exampl./m 3 ) of the plankton’s Cladocera and Copepoda communities in the Ukrainian Carpathians is noted for concrete pond of the Novostuzhytske forestry. 71 % of lenthic water bodies of the area of the upper Uzh have oligosaprobic status. This is the highest rate in the Ukrainian Carpathians. The fact points out the local water purity and minimal anthropogenic eutrophication. The investigations of planktofauna of the beaver ponds (Uzhok pass) in Carpathians was conducted for the first time in Ukraine. The ponds are important centre of the hydrobiodiversity at present time.