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STEFFEK, L: Molluscs (Mollusca) of the Morava river basin in Slovakia: Present state of the molluscs fauna

It would be necessary to start with technical adjustment (punctures of former dead arms) ensuring the improvement of their hydrological regime immediately. This would lead to the stabilisation of the most endangered species of marshes and water malacocoenoses. Acknowledgement I am grateful to Dr. O. Majzlan Csc. and Dr. V. Lucivjanská Csc. for providing me with the molluscs material obtained from the river Morava floodplain. The paper was prepared within the framework of the grant project No. 2-052/92 "Ecological evaluation of the alluvium of the river Morava". References Hudec, V. (1962): Pfispëvek k malakologickym vyzkumum. Dolnomoravského úvalu. Cas. Nár. Mus., Odd. pfyrodov, 131,2: 65-75. Jarolímek, I. (1994): Contribution to knowledge of forest communities along the Morava river. Ekológia, Bratislava, 13. Suppl. 1: 115-124. Kerney, M. P. (ed.) (1983): Die Landschnecken Nord- und Mitteleuropas. Paul Parey, Hamburg-Berlin, 384 pp. Kroupová, V. (1976): Mäkkyse vytypovanych lokalít v oblasti Skalice. -Záverecná správa VI-1-10/23. ZÚ UK Bratislava, 23 pp. Lisicky, M. J. (1991): Mollusca Slovenska. Veda, Bratislava, 344 pp. Lozek, V. (1964): Quartermollusken der Tschechoslowakei. Rozpravy Ustfedního ústavu geologickéhzo, Praha, 31, 374 pp Otahelová, H., - Janauer, G. A., - Husák, S. (1994): Beitrag zur Wasser- und Sumpfvegetation im Marchinundationsgebiet (Slowakei). Ekológia, Bratislava, 13, Suppl. 1: 43-54. Ruzicka, M. (1994) (ed.): Ecological potential of floodplain area of the river Morava. Ekológia, Bratislava, 13, Suppl. 1, 216 pp. Stanová, V. - Seffer, J. (1994): Acidophilus vegetation of dune system on locality Borová - description and indirect gradient analysis. Ekológia, Bratislava, 13, Suppl. 1: 99-105. Steffek, J. (1978): Malakozoologické pomery státnej prírodnej rezervácia (SPR) Devinska Kobyla (in Slovak). Acta Ecologica, Bratislava, 7, 17: 61-84. Steffek, J. (1983): Sucasny stav vyskytu druhu Gyraulus laevis (ALDER, 1838) (Mollusca, Planorbidae) v CSSR. Biológia, Bratislava, 38: 1045-1050. Steffek J. (1994): Current status of molluscs of Slovakia in relation to their exposure to danger. Biológia, Bratislava, 49: 651-655. STEFFEK J. Institute of Forest Ecology, Slovak Academy of Sciences, Fándlyho 1, SK-969 00 Banská Stiavnica, Slovakia