Characteristics and variation trend of phytoplankton community in Changli Golden Beach National Ocean Natural Preserve LUO Hao1, FENG Zhi-quan1, JIN Zhao-guang2, SUN Fu-qiang2, LIU Ya-liu2
LUO Hao1, FENG Zhi-quan1, JIN Zhao-guang2, SUN Fu-qiang2, LIU Ya-liu2BAO Hong-wei2, DUAN Xin-yu2, XU Yan1, MA Mming-hui1
1.National Marine Environmental Monitoring Center, Dalian 116023, China; 2.Changli Golden Beach National Ocean Natural Preserve, Changli 066600, China
Abstract: Characteristics and variation trend of phytoplankton community were investigated in Changli Golden Beach National Ocean Nature Preserve from February, May, August, and November of 1999 to February, May, August, and November of 2013. A total of 136 phytoplankton species was found, belonging to 43 genera, and 3 phyla, including 116 species in Bacillariophyta, 19 species in Pyrrophyta and only 1 species in Chrysophyta. There was annual downward trend in species number as elapse of the 15-year survey, with significant difference in number of predominant species. Two peaks of phytoplankton cell density were observed during the 15-year survey, and annual change in species number was inversely related to pH (r=-0.565, P<0.05). However, the annual change in Shanon-Wiener index (H′) was significantly positively related to salinity (r=0.521, P<0.05), indicating that pH and salinity were the main environmental factors influencing phytoplankton species composition. The phytoplankton species composition was negatively correlated with zooplankton abundance(r=-0.553, P<0.05),which may be involved in the predator-prey relation between them.
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LUO Hao, FENG Zhi-quan, JIN Zhao-guang, SUN Fu-qiang, LIU Ya-liuBAO Hong-wei, DUAN Xin-yu, XU Yan, MA Mming-hui. Characteristics and variation trend of phytoplankton community in Changli Golden Beach National Ocean Natural Preserve LUO Hao1, FENG Zhi-quan1, JIN Zhao-guang2, SUN Fu-qiang2, LIU Ya-liu2. Journal of Dalian Ocean University, 2015, 30(2): 207-210.
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