Somogyi Múzeumok Közleményei 15. (2002)

Körmendi Sándor – Lanszki József: A Duna-Dráva Nemzeti Park különböző vizes élőhelyeinek zooplankton vizsgálata II. A Crustacea (Cladocera, Copepoda) fauna kvalitatív vizsgálata

121 Investigation of Zooplankton from different water bodies of Duna-Dráva National Park. II. Qualitative investigation of Crustacea (Cladocera,Copepoda) fauna. SÁNDOR KÖRMENDI - JÓZSEF LANSZKI Qualitative Crustacea (Cladocera and Copepoda) plankton samples were collected from various water bodies (river, stream, dead arms, gravel pit lakes, moor) of Duna-Dráva National Park. Altogether 12 sampling sites were investigated. Samples were taken from pelagial and littoral zones. Based on the results of this study 37 Cladocera and 11 Copepoda species were recorded from the investigated water bodies, that is way species composition of Crustacea plankton was poor. Most of occured species are characterized by cosmopolitan and well-adaptable species of high ecological tolerance. Some rare Cladocera species occured, such as Bunops serricaudata, Kurzia latissima. Most of occured species can be found in the metaphyton, biotecton and benthos. 14-16 Cladocera taxa and 6-8 Copepoda taxa were recorded in the gravel pit lakes, 10-19 Cladocera taxa and 4-7 Copepoda were recorded in the dead arms, and only 2-4 Cladocera and 3-3 Copepoda species were collected in the Dráva and Rinya. The Copepoda fauna was characterized by the occurence of juvenile forms in the all water bodies. Probably the Zooplankton community were perished for the effect of the wastewaters of Nagyatád in two case (in May and September) in the Rinya. The Crustacea fauna of the dead arms indicate moderately polluted,eutrophic and ß-a-mesosaprobic water quality paticularly in summer. In this water bodies the Zooplankton communities characteristic to fishponds were found, dominated by species typically occuring in eutrophic and polytrophic stagnant waters. The Cladocera and Copepoda fauna of the Juniper Woodland at Barcs (Nagyberek) indicate eutrophic and ß-a-mesosaprobic water quality as well. The microcrustacea fauna of the gravel pit lakes indicate mesotrophic conditions and oligo-ß-mesosaprobic state in spring, but due to the moderately polluted of the gravel pit lakes (for example due to fish stocking, fish feeding, etc.) the communities were characterized by dominant Crustacea species living in meso-eutrophic and ß-mesosaprobic waters. Biomonitoring of Zooplankton communities started in different water bodies of Duna-Dráva National Park in 2000. Authors' addresses: LANSZKI József University of Kaposvár Faculty of Animal Science H-7401 Kaposvár, P.O.Box 16 HUNGARY KÖRMENDI Sándor University of Kaposvár Faculty of Animal Science H-7401 Kaposvár, P.O.Box 16 HUNGARY