Comparison of spatial distribution and seasonal variation of the bioluminescence and chlorophyll-a concentration fields in the northern part of the Black Sea

摘要

Modern methodology in analysing the spatial distribution and functional characteristics of plankton combines methodsclassical for the planktology and methods used in investigation of pelagic zone by the parameters of biophysical(bioluminescent, fluorescent, etc.) fields they produce. The use of real-time information systems is one of the advantagesof biophysical methods. It allows evaluation of the correlations between plankton structural features and structure ofhydrophysical fields, and ultimately leads to the development of predictive pelagic ecosystem models.Data collected within five marine research cruises were used to analyze seasonal variability of the bioluminescence fieldof the active layer of the Black Sea. Chlorophyll a concentration variability in the surface waters was analyzed based onthe remote sensing data. Correlation coefficients between bioluminescence field parameters and chlorophyll aconcentration had opposite signs in different seasons owing to the seasonal changes in the taxonomic structure of thephytoplankton communities.