Influence of Seawater Temperature on

Influence of Seawater Temperature on Phytoplankton Growth in Jiaozhou Bay, China

The phytoplankton reproduction capacity (PRC), as a new concept regarding chlorophyll-a and primary production (PP) is described. PRC is different from PP, carbon assimilation number (CAN) or photosynthetic rate (PB). PRC quantifies phytoplankton growth with a special consideration of the effect of seawater temperature. Observation data in Jiaozhou Bay, Qingdao, China, collected from May 1991 to February 1994 were used to analyze the horizontal distribution and seasonal variation of the PRC in Jiaozhou Bay in order to determine the characteristics, dynamic cycles and trends of phytoplankton growth in Jiaozhou Bay; and to develop a corresponding dynamic model of seawater temperature vs. PRC. Simulation curves showed that seawater temperature has a dual function of limiting and enhancing PRC. PRC's periodicity and fluctuation are similar to those of the seawater temperature. Nutrient silicon in Jiaozhou Bay satisfies phytoplankton growth from June 7 to November 3. When nutrients N, P and Si satisfy the phytoplankton growth and solar irradiation is sufficient, the PRC would reflect the influence of seawater temperature on phytoplankton growth. Moreover, the result quantitatively explains the scenario of one-peak or two-peak phytoplankton reproduction in Jiaozhou Bay, and also quantitatively elucidates the internal mechanism of the one- or two-peak phytoplankton reproduction in the global marine areas.

作 者： 楊東方 高振會 陳豫 王培剛 孫培艷   作者單位： 楊東方(College of Fishery Science, Shanghai Fisheries University, Shanghai 200090,China;Beihai Monitoring Center, State Oceanic Administration, Qingdao 266033, China;Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China)

高振會,王培剛,孫培艷(Beihai Monitoring Center, State Oceanic Administration, Qingdao 266033, China)

陳豫(College of Computer Science, Shanghai Fisheries University, Shanghai 200090, China) 

刊 名： 中國海洋湖沼學報(英文版)  ISTIC SCI 英文刊名： CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY  年，卷(期)： 2004 22(2)  分類號： P7  關鍵詞： phytoplankton reproduction   seawater temperature   phytoplankton reproduction capacity   Jiaozhou Bay ons  

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