MULTI-FACTOR ANALYSIS OF THE MARINE ENVIRONMENTAL INFLUENCE ON BENTHIC FORAMINIFERA, NORTHWESTERN BLACK SEA SHELF
Kravchuk, Anna O.
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The geoecological state of the continental shelf is often analyzed using the changes in geochemical characteristics of the water column and bulk chemical or xenobiotic composition of bottom sediments. No single indicator reflects the complex ecosystem interrelationships if it is not considered together with other attributes. Biotic components of the shelf control the physico-chemical environment and the concentration of substances in bottom sediments. The effect of toxic compounds on organisms is most evident in a disruption of biomineralization functions, so that the resulting morphogenetic indicators become the product of the effects of toxins on an active protein matrix. Therefore, areas of the NW Black Sea shelf (Fig. 1) that are under natural and anthropogenic stress exhibit a variety of morphological changes in foraminiferal tests. Morphogenetic attributes serve as objective evidence of the disruption in biomineralization functions of organisms and become integral indicators of the quality of the marine environment.
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