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| Titel |
Regulation of Mnemiopsis leidyi dynamics by potential changes in temperature and zooplankton conditions in the Black Sea. |
| VerfasserIn |
B. Salihoglu, B. Fach, T. Oguz |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250029321
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| Zusammenfassung |
| Providing a comprehensive understanding of the effects that cause formations of ctenophore
blooms in the Black Sea is the main objective of this study. In order to analyse
ctenophore dynamics in the Black Sea a zero-dimensional population based model of the
ctenophore Mnemiopsis leidyi is developed. The stage resolving ctenophore model
combines the modified form of stage resolving approach of Fennel, 2001 with the
growth dynamics model of Kremer, 1976; Kremer and Reeve, 1989 under 4 stages
of model-ctenophore. These stages include the different growth characteristics of
egg, juvenile, transitional and adult stages. The dietary patterns of the different
stages follows the observations obtained from the literature. The model is able
to represent consistent development patterns, while reflecting the physiological
complexity of a population of Mnemiopsis leidyi. Model results suggest that different
nutritional requirement of each stage may serve as the bottlenecks for population
growth and only when growth conditions are favorable for both larval and lobate
stages, the high overall population growth rates may occur. Model is also used to
analyse the influence of climatic changes on Mnemiopsis leidyi reproduction and
outburst. This study presents and discussed how potential changes in temperature and
zooplankton conditions in the Black Sea may regulate Mnemiopsis leidyi dynamics. |
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