Seasonal phenology of the heterotrophic dinoflagellate Noctiluca scintillans(Macartney) in Jiaozhou Bay and adjacent coastal Yellow Sea,China  

作　　者：WANG Weicheng SUN Song SUN Xiaoxia ZHANG Fang ZHANG Guangtao ZHU Mingliang 王卫成;孙松;孙晓霞;张芳;张光涛;朱明亮(Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences;University of Chinese Academy of Sciences;Jiaozhou Bay Marine Ecosystem Research Station, Institute of Oceanology, Chinese Academy of Sciences;Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology)

机构地区：[1]Key Laboratory of Marine Ecology and Environmental Sciences,Institute of Oceanology,Chinese Academy of Sciences Qingdao 266071,China [2]Jiaozhou Bay Marine Ecosystem Research Station,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071 China [3]University of Chinese Academy of Sciences,Beijing 100049,China [4]LaboratoryJor Marine Ecology and Environmental Science,Qingdao National Laboratory for Marine Science and Technology Qingdao 266071,China

出　　处：《Journal of Oceanology and Limnology》2018年第4期1280-1293,共14页海洋湖沼学报（英文）

基　　金：Supported by the State Key Program of National Natural Science Foundation of China(No.41230963);the NSFC-Shandong Joint Fund for Marine Ecology and Environmental Sciences(No.U1606404);the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDA11020305);the President’s International Fellowship Initiative(PIFI)of the Chinese Academy of Sciences(No.2016VBA078)to SUNSong

摘　　要：Seasonal variations in numerical abundance, cell diameter and population carbon biomass of the heterotrophic dinoflagellate Noctiluca scintillans were studied for 10 years from 2004 to 2013 in Jiaozhou Bay and adjacent coastal Yellow Sea, China, and their ecological functions were evaluated. In both areas, N. scintillans occurred throughout the year and demonstrated an essentially similar seasonality; the cell abundance increased rapidly from the winter minimum to an annual peak in late spring and early summer, and decreased gradually toward the autumn-winter minimum. The peak abundance differed by years, and there was no consistent trend in long-term numerical variations. The cell diameter also showed a seasonal fluctuation, being larger in spring and early summer than the other seasons. Estimated carbon biomass of N. scintillans population reached to a peak as high as 90.3 mg C/m^3, and occasionally exceed over phytoplankton and copepod biomass. Our results demonstrate that N. scintillans in northwestern Yellow Sea displays the seasonal phenology almost identical to the populations in other temperate regions, and play important trophic roles as a heterotroph to interact with sympatric phytoplankton and copepods.Seasonal variations in numerical abundance, cell diameter and population carbon biomass of the heterotrophic dinoflagellate Noctiluca scintillans were studied for 10 years from 2004 to 2013 in Jiaozhou Bay and adjacent coastal Yellow Sea, China, and their ecological functions were evaluated. In both areas, N. scintillans occurred throughout the year and demonstrated an essentially similar seasonality; the cell abundance increased rapidly from the winter minimum to an annual peak in late spring and early summer, and decreased gradually toward the autumn-winter minimum. The peak abundance differed by years, and there was no consistent trend in long-term numerical variations. The cell diameter also showed a seasonal fluctuation, being larger in spring and early summer than the other seasons. Estimated carbon biomass of N. scintillans population reached to a peak as high as 90.3 mg C/m^3, and occasionally exceed over phytoplankton and copepod biomass. Our results demonstrate that N. scintillans in northwestern Yellow Sea displays the seasonal phenology almost identical to the populations in other temperate regions, and play important trophic roles as a heterotroph to interact with sympatric phytoplankton and copepods.

关 键 词：cell size biomass COPEPODS phytoplankton ZooScan 

分 类 号：X55[环境科学与工程—环境工程] Q949.254[生物学—植物学]