Impact of microzooplankton and Calanus sinicus(Brodsky,1962) on phytoplankton in the Yellow Sea during early summer  

作　　者：于莹 张武昌 肖天 李洪波 李超伦 孙松 

机构地区：[1]Key Laboratory of Marine Ecology and Environmental Sciences,Institute of Oceanology,Chinese Academy of Sciences [2]Graduate School of Chinese Academy of Sciences

出　　处：《Chinese Journal of Oceanology and Limnology》2010年第4期881-886,共6页中国海洋湖沼学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(No.40876085),the National Natural Science Foundation of China(No.40821004);the National Basic Research Program of China(973 Program)(No.2006CB400604);the Knowledge Innovation Program of Chinese Academy of Sciences(No.KZCX2-YW-213-3)

摘　　要：Dilution incubations and Calanus sinicus addition incubations were simultaneously conducted at five stations in the Yellow Sea in June of 2004 to evaluate the impact of microzooplankton and Calanus sinicus on phytoplankton based on the Chlorophyll a(Chl-a) levels.The Chl-a growth rates(k) ranged from 0.60-1.67 d-1,while microzooplankton grazed the Chl-a at rates(g) of 0.29-0.62 d-1.The addition of C.sinicus enhanced the Chl-a growth rate(Z) by 0.004-0.037 d-1 ind.-1 L.C.sinicus abundance ranged from 84.1-160.9 ind.m-3,which occupied 90.7%-99.1% of the copepod(>500 μm) population.The in-situ increase in phytoplankton by C.sinicus community was estimated to be 0.000 4-0.005 9 d-1.These results showed that microzooplankton were the main grazers of phytoplankton,while C.sinicus induced a slight increase in the levels of phytoplankton.Dilution incubations and Calanus sinicus addition incubations were simultaneously conducted at five stations in the Yellow Sea in June of 2004 to evaluate the impact of microzooplankton and Calanus sinicus on phytoplankton based on the Chlorophyll a（Chl-a） levels.The Chl-a growth rates（k） ranged from 0.60-1.67 d^-1,while microzooplankton grazed the Chl-a at rates（g） of 0.29-0.62 d^-1.The addition of C.sinicus enhanced the Chl-a growth rate（Z） by 0.004-0.037 d^-1 ind.^-1 L.C.sinicus abundance ranged from 84.1-160.9 ind.m^-3,which occupied 90.7%-99.1% of the copepod（〉500 μm） population.The in-situ increase in phytoplankton by C.sinicus community was estimated to be 0.000 4-0.005 9 d^-1.These results showed that microzooplankton were the main grazers of phytoplankton,while C.sinicus induced a slight increase in the levels of phytoplankton.

关 键 词：Calanus sinicus copepod addition incubation dilution incubation MICROZOOPLANKTON the Yellow Sea 

分 类 号：Q948.8[生物学—植物学]