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本文研究了大型底栖动物对富营养化造成的养分动态和波罗的海浮游-底栖耦合过程的生态作用。大型底栖动物活动通常对沉积物生物地球化学变化具有显著影响,并且能够促进与富营养化相抵消的反硝化作用和沉积物磷持留过程的增强。大型动物对这些过程的影响程度取决于动物的密度和功能群组成。与无大型动物的沉积层相比,大型动物活动对沉积物营养动态的影响还将导致生物沉积出流中较高的N:P比例。富营养化引起的缺氧情况下,内源性养分物质负荷增加的原因包括沉积物生物地球化学过程的改变和生物扰动性大型动物的减少或缺失使得这些动物活动对波罗的海生态系统的自净过程的促进作用下降。
In this paper, the nutrient effects of macrozoobenthos on eutrophication and the ecological role of the planktonic-benthic coupling process in the Baltic Sea were studied. Macrobenthos activities generally have a significant impact on sediment biogeochemical changes and can promote denitrification that counteracts eutrophication and enhanced phosphorus retention in sediments. The extent to which large animals affect these processes depends on the animal’s density and functional group composition. The effect of macro animal activities on the nutrient dynamics of sediments will also result in a higher N: P ratio in the bio-deposited effluent than in the absence of macro-animals. Reasons for the increased loading of endogenous nutrient substances under eutrophication-induced hypoxia include changes in sediment biogeochemical processes and the reduction or loss of bioturbated macrofauna that make these animals’ activities self-purification of the Baltic ecosystem Promote the role of decline.