Spatial and temporal dynamics of phytoplankton and bacterioplankton biomass in Sanya Bay, northern South China Sea

查看全文 作　　者：ZHOU [1,2,3,4]Weihua LI [1,2]Yao CAI [1,2]Chuanghua HUANG [1,2]Liangmin WANG [1,2]Hankui XU [1,2]Jirong DONG [1,2]Junde ZHANG [1,2]Si

机构地区：[1]LED and LMB, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China;[2]Tropical Marine Biological Research Station in Hainan, Chinese Academy of Sciences, Sanya 572000, China;[3]State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China;[4]Laboratory of Marine Ecosystem and Biogeochemistry, SOA, Second Institute of Oceanography, SOA, Hangzhou 310012, China

出　　处：《Journal of Environmental Sciences》索引2009年第21卷第5期,共9页

基　　金：part of the Young Scientist Fund of NSFC (No. 40806050);Knowledge Innovation Programof CAS (No. SQ200803);continually supported by Special Basic Research Funds (No. 2008FY110100);the Open Research Program Fund of the LMEB, SOA (No.200806);SKLOG, Institute of Geochemistry, CAS (No.OGL200605);MEL, Xiamen University (No. MEL0502). 摘　　要：The composition of phytoplankton and the dynamics of phytoplankton and bacterioplankton biomass (PB and BB, respectively) of Sanya Bay, South China Sea, were determined. A total of 168 species (67 genera) phytoplankton were identified, including Bacillariophyta (diatom, 128 species), Pyrrophyta (35 species), Cyanophyta (3 species), and Chrysophyta (2 species). Annual average abundance of phytoplankton was 1.2 × 107 cells/m3, with the highest abundance in autumn, and the lowest in summer. Annual average diversity index (H ) and evenness (J) values were 3.96 and 0.70, respectively. Average chlorophyll-a was 2.5 mg/m3, and the average PB was 124 mg C/m3, with the highest value in autumn. Surface PB was higher than the bottom, except for summer. Annual mean bacterioplankton abundance and BB were 6.9 × 1011 cells/m3 and 13.8 mg C/m3, respectively. The highest BB was found in summer, followed by winter, spring, and autumn. Surface BB was higher than bottom all year round. The spatial distribution patterns of PB and BB were very similar with the highest biomass in the estuary, and decreased seaward, primarily due to the terrestrial input from the Sanya River and influx of oceanic water. The main factor influencing PB and BB was dissolved inorganic nitrogen (DIN). Other factors such as temperature, which is above 22°C throughout the year, had a negligible impact. The correlation between BB and PB was significant (P < 0.01). The annual average ratio of BB/PB was 0.12 (0.06-0.15). Phytoplankton primary production was one of the most important factors in controlling the distribution of bacterioplankton. 关键词：浮游植物细菌生物量中国南海三亚湾海洋法时空动态空间分布格局细菌丰度

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Spatial and temporal dynamics of phytoplankton and bacterioplankton biomass in Sanya Bay, northern South China Sea

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