Dotsenko Irina V, Mikhailenko Anna V
Southern Federal University, Institute of Earth Science, Rostov-on-Don 344090, Russia.
ScientificWorldJournal. 2019 Mar 12;2019:8456371. doi: 10.1155/2019/8456371. eCollection 2019.
The importance of phytoplankton is high in transformation of substances in aquatic ecosystems and in formation of suspension's material structure. Its main functions are consumption of the dissolved biogenic components and chemical elements and their conversion to a firm phase. The article is devoted to the bioaccumulation of microelements by phytoplankton in the ecosystem of the Azov Sea. The fact that the algal biomass during the periods of blooming in the sea reaches 1,400 g/l makes this study especially urgent. The authors define the rates of biogeochemical cycle and the intensity of chemical elements' consumption and also investigate the role of phytoplankton in the formation chemical peculiarities of bottom deposits and its involvement in sedimentogenesis in the Azov Sea. The cause of the reduced trace element content in bottom deposits relatively to suspended material is established. It is noted that the amount of some elements annually consumed by algae of the Azov Sea is up to 75% from their maximum delivery by terrigenous material.
浮游植物在水生生态系统物质转化和悬浮物质结构形成中具有重要意义。其主要功能是消耗溶解的生物源成分和化学元素，并将它们转化为固态相。本文致力于研究亚速海生态系统中浮游植物对微量元素的生物积累。鉴于该海域藻类生物量在水华期可达1400克/升，使得这项研究尤为迫切。作者确定了生物地球化学循环速率和化学元素消耗强度，还研究了浮游植物在亚速海底部沉积物化学特性形成中的作用及其在沉积作用中的参与情况。明确了底部沉积物中微量元素含量相对于悬浮物质减少的原因。值得注意的是，亚速海藻类每年消耗的某些元素量占陆源物质最大输送量的75%。
