Effects of eutrophication on phytoplankton community in Jinghai Bay
Marine phytoplankton play a vital role in maintaining the operation of the marine biological pump and have a huge impact on the global biogeochemical cycle.Due to the great influence of human activities and the limited water exchange with the outside sea,the bay and estuary regions are prone to problems such as eutrophication that threaten ecosystem stability.Therefore,studying the relationship between eutrophication and phytoplankton communities incoastal ecosystems is helpful to maintain the health and sustainable development of the ecosystems.In this study,four cruises were carried out in May and August of 2021 and 2022 in Jing Bay to investigate the relationship between phytoplankton communities and environmental factors in spring and summer.The results showed that a total of 150 phytoplankton species were observed in the spring and summer of 2021 and 2022 in Jinghai Bay,and the phytoplankton community was mainly composed of diatoms and dinoflagellate,and a large number of cyanobacteria increased in the summer of 2022.Biodiversity in spring was higher than that in summer in both years,and the eutrophication index(Ei)showed a significant increase,from moderate eutrophication in 2021 to severe eutrophication in 2022.The redundancy analysis and Pearson correlation analysis results indicated that eutrophication may be the key factor affecting the phytoplankton community in Jinghai Bay.The results of this study are helpful to provide theoretical support for improving the stability,health and sustainability of the coastal ecosystem in Jinghai Bay.
phytoplanktonBacillariophyta and Dinophytacommunity compositioneutrophicationJinghai Bay
NETL
NSTL
万方数据
