Model study on Bohai ecosystem Ⅱ. Annual cycle of nutrient-phytoplankton dynamics

LIU Hao; YIN Bao-shu

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LIU Hao, YIN Bao-shu. Model study on Bohai ecosystem Ⅱ. Annual cycle of nutrient-phytoplankton dynamics[J]. Haiyang Xuebao, 2007, 29(4): 20-33.

Citation:

LIU Hao, YIN Bao-shu. Model study on Bohai ecosystem Ⅱ. Annual cycle of nutrient-phytoplankton dynamics[J]. Haiyang Xuebao, 2007, 29(4): 20-33.

LIU Hao, YIN Bao-shu. Model study on Bohai ecosystem Ⅱ. Annual cycle of nutrient-phytoplankton dynamics[J]. Haiyang Xuebao, 2007, 29(4): 20-33.

Citation:

LIU Hao, YIN Bao-shu. Model study on Bohai ecosystem Ⅱ. Annual cycle of nutrient-phytoplankton dynamics[J]. Haiyang Xuebao, 2007, 29(4): 20-33.

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Model study on Bohai ecosystem Ⅱ. Annual cycle of nutrient-phytoplankton dynamics

LIU Hao¹,
YIN Bao-shu²

1.
Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Department of Oceanography, Xiamen University, Xiamen 361005, China
2.
Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China

Received Date: 2006-02-10
Rev Recd Date: 2006-06-20

Abstract

Abstract

Using the coupled bio-physical model described in the first paper of this series of studies,the annual variations of algae biomass and nutrient concentration in Bohai Seawer esimulated.Modeled results show that the onset of spring bloom is induced by high nutrient stocks stored in the winter,though the initial time is earlier in shallow waters than in deep waters,for which the evolution of the vertical stratification in deep waters plays the important role;on the other hand,newly added river-borne nutrients and resuspending sediment-borne nutrients are responsible for the out burst of autumn blooms.Based on modeled results,it is also found that the BS ecosystem,as a whole,is limited by nitrogen all the year round, though the phosphorus limitation is apparent in Laizhou Bay where the N/P ratio is higher than 16 due to the contribution of newly added nutrient species from Huanghe River discharges.
- Bohai Sea,
- chloro phylla,
- algae bloom,
- nutrient limitation

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References(29)

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