%0 Journal Article
%T Yearly changes of phytoplankton in the ecological monitoring zone of Daya Bay<br>大亚湾生态监控区的浮游植物年际变化
%A 王 雨
%A 林 茂
%A 林更铭
%A 王春光
%A 项 鹏
%J 海洋科学
%D 2012
%I 
%X Based on a great deal of monitoring data and information obtained from National Oceanic Administration, the Third Institute of Oceanography and other authorities, the yearly changes and spatial variation of phytoplankton community in the Ecological Monitoring Zone of Daya Bay were studied. To assess the current status and further trend, the phytoplankton composition, abundance, dominant species, diversity and harmful algae bloom events from 2004 to 2007 were analyzed. Results showed that the main principal phytoplankton ecotypes were changed from warm-water species to eurythermy species. The species and abundance were yearly degressive. The distribution of phytoplankton abundance kept a trend of higher in the west coast and lower in the east and southeast coast, and higher alongshore and lower offshore. It is presented that the rich nutrients and warm water discharge affected the phytoplankton abundance. In the Ecological Monitoring Zone of Daya Bay the dominant species were mostly diatom with seasonal and yearly diversity and variability. Rhizosolenia alata f. gracillima was the predominant species in spring and Pseudo-nitzschia delicatissma was the predominant species in summer. Pyrrophyta started to be the ascendancy at the end of spring. The diversity of phytoplankton community was yearly decreased and the evenness of phytoplankton community was yearly increased. The unconventionality of phytoplankton multiplication led to lower diversity, species imbalance, monotony of community. Harmful algae bloom occurred frequently in spring and summer, and its frequency and classes were increased year by year. All of these indicated that the ecosystem of the Ecological Monitoring Zone of Daya Bay was vulnerable and undergoing a rapid deterioration.
%K Ecological Monitoring Zone
%K Daya Bay
%K phytoplankton
%K yearly changes
%K spatial variation<br>生态监控区
%K 大亚湾
%K 浮游植物
%K 年际变化
%K 空间变动
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=2D9C75573FA3E416&jid=DFE7B94EB76B8F26135C9890832CEF6A&aid=0088D482C124D0E8F69E4E9B81DB6FCA&yid=99E9153A83D4CB11&vid=933658645952ED9F&iid=E158A972A605785F&sid=7AA74D31F1FF2DCE&eid=BB0EA31DB1B01173&journal_id=1000-3096&journal_name=海洋科学&referenced_num=0&reference_num=0