Affiliation:
1. Marine Fisheries Research Institute of Shandong
2. Chinese Academy of Sciences
Abstract
In order to analyze the impact of the green tide (Ulva prolifera) on the phytoplankton community, eight surveys were conducted in the sea area of Haiyang, Yantai and Rizhao from July 2008 to September 2008. In the surveys, 62 phytoplankton species were identified, belonging to 4 phyla, 31 genera. The average abundance of the phytoplankton was 3.49×106 cells/m3(1.59×105–1.28×107 cells/m3), with a proportion of 92.02% diatom and 6.70% dinoflagellate. The Superscript text phytoplankton abundance gradually decreased from the inshore area to the offshore area. When green tide occurred, the dominant phytoplankton shifted from Chaetoceros curvisetus, Ceratium tripos, Chaetoceros affinis, Skeletonema costatum to Thalassionema nitzschioides in Haiyang, Yantai and Rizhao.. The varied nutrients caused by green tide could be an important factor for the dominant species shift in the phytoplankton community.
Publisher
Trans Tech Publications, Ltd.
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