Distribution of the new invader Mnemiopsis sp. and the resident Aurelia aurita and Pleurobrachia pileus populations in the Black Sea in the years 1991-1993
Institute of Marine Sciences-Middle East Technical University PO Box 28: TR 33731 Erdemli-Icel, Turkey
Institute of Biology of the Southern Seas - Ukrainian Academy of Science Nachimov Ave., 2, Sevastopol, Ukraine