Distribution and Size Structure of Nonindigenous Ctenophore Mnemiopsis Leidy (Agassiz, 1874) in the Western Black Sea, 1998-2001
2005
KAMBURSKA Lyudmila | STEFANOVA Kremena
The present paper focuses on the summer dynamic of nonindigenous ctenophore Mnemiopsis leidyi after the invasion of its predator to the Black Sea, another ctenophore Beroe ovata (Mayer, 1912). In respect to Mnemiopsis density, the years under discussion are classified as normal- 1998, 2000, 2001, and 1999 is poor. Specific coastal areas in the Western Black Sea are distinguished as hot spots (highly risked) due to the constantly high amounts of Mnemiopsis. The results given above characterize the post-invasion period 1998-2001 as transitional, with M. leidyi performance still under adjustment to the ctenophore prey-predator couple.
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