Characteristics of phytoplankton communities along Qingdao coast and their relationship with environmental factors
A field survey was carried out in Qingdao coastal area in spring(May)and summer(August)in 2019.Variation characteristics of phytoplankton community structure in coastal areas of Qingdao and their relationship with environment were studied,and the reasons of variation were analyzed based on the historical data.The results showed that a total of 109 taxa which belong to 52 genera of 4 phyla were identified in spring and summer.Compared with the historical data,the survey results of the phy-toplankton community in costal waters of Qingdao showed obvious species succession,and the domi-nance of predominant species,Skeletonema costatum,remarkably decreased.The cell abundance of phytoplankton in Jiaozhou Bay was significantly higher than that in Laoshan Bay,and the diversity in-dex of Laoshan Bay was higher than that in Jiaozhou Bay in summer.Correlation analysis and redun-dancy analysis of phytoplankton community structure and environmental factors showed that the phyto-plankton cell abundance showed a positive correlation with phosphate and DIN(P＜0.01),the phyto-plankton cell abundance showed a positive correlation with COD(P＜0.05)while the phytoplankton cell abundance showed a negative correlation with salinity and pH(P＜0.05).
phytoplanktoncommunity structuredominant speciesoffshore area of Qingdaonutrient
NETL
NSTL
万方数据
