In-situ Studies of Microzooplankton Grazing Pressure on Phytoplankton in Jiaozhou Bay, China  

作　　者：王勇 孙鹤鲲 周毅 

机构地区：[1]Qingdao Environmental Protection Bureau, Qingdao 266003, China,Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China [2]Qingdao Environmental Protection Bureau, Qingdao 266003, China [3]Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China

出　　处：《Chinese Journal of Oceanology and Limnology》2004年第2期162-165,共4页中国海洋湖沼学报（英文版）

基　　金：NoKZCX3 SW 2 14supportedbyChineseAcademyofSciences

摘　　要：Preliminary studies on microzooplankton grazing were conducted with dilution method in Jiaozhou Bay from summer 1998 to spring 1999. Four experiments were carried out at St.5 located at the center of Jiaozhou Bay. Chlorophyll a concentrations were consistently dominated by netphytoplankton(net-,>20μm), except during the autumn 1998 cruise, when they were dominated by nanophytoplankton(nano-,2-20μm). The contribution of picophytoplankton (pico-,<2μm) to total chlorophyll a concentrations(<200μm) varied considerably between cruises. Instantaneous growth coefficients(u) of phytoplankton varied from 0.098 to 1.947d -1 , with mean value of 0.902d -1 . Instantaneous coefficients(g) of microzooplankton grazing on phytoplankton ranged from 0.066 to 0.567d -1 , mean value of 0.265d -1 , which was equivalent to daily loss of 21.9% of the initial standing stock and 58.1% of the daily potential production.Preliminary studies on microzooplankton grazing were conducted with dilution method in Jiaozhou Bay from summer 1998 to spring 1999. Four experiments were carried out at St.5 located at the center of Jiaozhou Bay. Chlorophyll a concentrations were consistently dominated by netphytoplankton(net-,>20μm), except during the autumn 1998 cruise, when they were dominated by nanophytoplankton(nano-,2-20μm). The contribution of picophytoplankton (pico-,<2μm) to total chlorophyll a concentrations(<200μm) varied considerably between cruises. Instantaneous growth coefficients(u) of phytoplankton varied from 0.098 to 1.947d -1 , with mean value of 0.902d -1 . Instantaneous coefficients(g) of microzooplankton grazing on phytoplankton ranged from 0.066 to 0.567d -1 , mean value of 0.265d -1 , which was equivalent to daily loss of 21.9% of the initial standing stock and 58.1% of the daily potential production.

关 键 词：Jiaozhou Bay MICROZOOPLANKTON GRAZING dilution method 

分 类 号：Q948[生物学—植物学]