Size structure of standing stock and primary production of phytoplankton in the Chukchi Sea and the adjacent sea area during the summer of 2012

Le Fengfeng; Hao Qiang; Jin Haiyan; Li Tao; Zhuang Yanpei; Zhai Hongchang; Liu Chenggang; Chen Jianfang

doi:10.3969/j.issn.0253-4193.2014.10.011

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Le Fengfeng, Hao Qiang, Jin Haiyan, Li Tao, Zhuang Yanpei, Zhai Hongchang, Liu Chenggang, Chen Jianfang. Size structure of standing stock and primary production of phytoplankton in the Chukchi Sea and the adjacent sea area during the summer of 2012[J]. Haiyang Xuebao, 2014, 36(10): 103-115. doi: 10.3969/j.issn.0253-4193.2014.10.011

Citation:

Le Fengfeng, Hao Qiang, Jin Haiyan, Li Tao, Zhuang Yanpei, Zhai Hongchang, Liu Chenggang, Chen Jianfang. Size structure of standing stock and primary production of phytoplankton in the Chukchi Sea and the adjacent sea area during the summer of 2012[J]. Haiyang Xuebao, 2014, 36(10): 103-115. doi: 10.3969/j.issn.0253-4193.2014.10.011

Citation:

Le Fengfeng, Hao Qiang, Jin Haiyan, Li Tao, Zhuang Yanpei, Zhai Hongchang, Liu Chenggang, Chen Jianfang. Size structure of standing stock and primary production of phytoplankton in the Chukchi Sea and the adjacent sea area during the summer of 2012[J]. Haiyang Xuebao, 2014, 36(10): 103-115. doi: 10.3969/j.issn.0253-4193.2014.10.011

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Size structure of standing stock and primary production of phytoplankton in the Chukchi Sea and the adjacent sea area during the summer of 2012

doi: 10.3969/j.issn.0253-4193.2014.10.011

1.
Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China;Key Lab of Marine Ecosystems and Biogeochemistry State Oceanic Administration, Hangzhou 310012, China
2.
Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China;Key Lab of Marine Ecosystems and Biogeochemistry State Oceanic Administration, Hangzhou 310012, China;State key Laboratory of Satellite Ocean Environment Dynamics, Hangzhou 310012, China
3.
Ocean University of China, Qingdao 266003, China

Received Date: 2014-02-16
Rev Recd Date: 2014-04-26

Abstract

Abstract

Size fractionated standing stock and primary production of phytoplankton in the Chukchi Sea and the adjacent sea area were studied during the 5th Chinese National Arctic Research Expedition in the summer of 2012. The results clearly showed that there was marked feature of spatial zonation in the sea areas investigated. In the shelf region, the standing stock and primary production were much higher than those of deep-sea area. The water column integrated average values of Chl a concentration varied from 0.32 to 15.66 mg/m³ [on average (2.77±3.96)mg/m³] during the outward voyage. The high values appeared in the southern Chukchi Sea, coast areas near Point Barrow of Alaska and northern ice edge area. The lowest and highest value of primary production (PP) were 50.11 mg/(m²·d) and 943.28 mg/(m²·d), and the high value was encountered in the ice edge where phytoplankton bloom happened. During the return voyage, the water column integrated average value of Chl a concentration was an order of magnitude lower than the outward voyage. The values of PP were 12.31~41.35 mg/(m²·d), with the high value appearing in the shelf region. The results of size-fractionated Chl a and PP showed that photosynthetic picoplankton was the greatest contributor to phytoplankton stocks and production in deep-sea area (46.1% and 56.9% respectively), and the differences between contributions of microplankton and nanoplankton to Chl a and PP were very small. But in the shelf region, microplankton took the dominant position of Chl a(59.8%) and PP (60.6%), picoplankton second and nanoplankton the minimum.
- Chukchi Sea,
- Arctic,
- phytoplankton standing stock,
- primary production,
- size structure

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References(29)

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