Interannual changes in the biomass of the Black Sea gelatinous zooplankton
Open Access
- 1 July 1998
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Plankton Research
- Vol. 20 (7) , 1377-1385
- https://doi.org/10.1093/plankt/20.7.1377
Abstract
The 15 year changes in the total gelatinous biomass consist of a general trend to increase, from 250 gm −2 in 1980 to 2500 g m −2 in 1995, and fluctuations with a period of −4 years performed against the background of this trend in the upper 150 m layer. Different species occupying distinct trophic niches form these peaks. When represented as the percentage of the total zooplankton biomass, Aurelia aurita and Mnemiopsis leidyi exhibit the contra-phase fluctuations where a sharp increase in M.leidyi is accompanied by a decrease in the A.aurita biornass.Keywords
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