Publicado 4 números por año
ISSN Imprimir: 1521-9429
ISSN En Línea: 1940-4328
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Features of the Seasonal Succession of Phytoplankton in the Crimean Coastal Area (Black Sea) in Years with Different Climatic Conditions (2009-2014)
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SINOPSIS
Under fluctuating climatic conditions, it is important to study the dynamics of various functional complexes of phytoplankton species. Cold winters have been shown to have a long-term influence on the course of the seasonal succession of phytoplankton, and on the intensity of blooms in the open waters of the Black Sea. In the coastal zone, this connectivity has not yet been sufficiently studied. Based on regular monitoring studies (2009-2014) in the coastal area of Sevastopol, features of the seasonal succession of phytoplankton, in years with different climatic conditions, were revealed: the "cold" years differed from the "warm" ones by a more prolonged dominance of diatom complexes in terms of cell abundance (especially of small-celled species), which characterize the initial stage of seasonal succession of phytoplankton. The level of development of both diatoms and dinoflagellates was minimal compared to other years, with a shift in the periods of maxima to later months. In contrast, the "warm" years were characterized by the predominance of dinoflagellates for most of the studied period, with a shift in the timing of the maxima to earlier months. Both diatoms and dinoflagellates reached their maximal development in "warm" years in spring and autumn. In the "moderate" years, phytoplankton development proceeded either by analogy with the "cold" (2009) or "warm" (2011) years. The seasonal succession described above is typical for the northwestern Black Sea, in particular - the Sevastopol coastal area, and differs from the average pattern for the northwestern areas described earlier (1992-1993). The difference consisted of an increase in the proportion of stages I and III due to a decrease in stage II, compared to 1992-1993.
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