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

王勇 孙鹤鲲 周毅

中国海洋湖沼学报(英文版)2004,Vol.22Issue(2):162-165,4.
中国海洋湖沼学报(英文版)2004,Vol.22Issue(2):162-165,4.

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

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

王勇 1孙鹤鲲 2周毅1

作者信息

  • 1. Qingdao Environmental Protection Bureau, Qingdao 266003, China
  • 2. Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
  • 折叠

摘要

Abstract

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

Key words

Jiaozhou Bay/microzooplankton/grazing/dilution method

分类

海洋科学

引用本文复制引用

王勇,孙鹤鲲,周毅..In-situ Studies of Microzooplankton Grazing Pressure on Phytoplankton in Jiaozhou Bay, China[J].中国海洋湖沼学报(英文版),2004,22(2):162-165,4.

基金项目

Project No KZCX3-SW-214 supported by Chinese Academy of Sciences. ()

中国海洋湖沼学报(英文版)

OACSTPCD

2096-5508

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