题目: Phytoplankton distribution and their relationship to environmental variables in Sanya Bay, South China Sea 

作者: Yanying zhang,Junde Dong,Juan Ling,Youshao Wang,Si Zhang 

刊物: Scientia Marina，（IF=1.079，IV区）

刊号: 2010,74(4):783-792 

摘要: Phytoplankton quantification was conducted in Sanya Bay from January 2005 to February 2006. A submers­ible in situ spectrofluorometer, which permits the differentiation of four algal groups (green algae, diatoms and dinoflagel­lates, cryptophytes and cyanobacteria) was used. Seasonal variation of total chlorophyll a concentration showed that high value appeared in summer and low concentration occurred in spring. Diatoms and dinoflagellates group was the predomi­nant phytoplankton all year in the Bay. The stable stratification of phytoplankton vertical distribution came into being in July. During the stratification event, the total chlorophyll a concentration of deep layer was much higher than the surface; cyanobacteria and cryptophyta groups decreased and almost disappeared, however, the concentration of green algae and diatoms and dinoflagellates groups increased. In deep layer, the concentration of diatoms and dinoflagellates group increased sharply, which was about eight times more than that in the surface layer. The vertical profiles character of phytoplankton showed that from inshore stations to outer bay the stratification of phytoplankton vertical distribution gradually strength­ened. Dissolved inorganic nutrient especially phosphate and inorganic nitrogen and cold-water upwelling were the main regulating factor for phytoplankton distribution.