Latitudinal and interannual variations of the spring phytoplankton bloom peak in the East Asian marginal seas

CHEN Cheng; MAO Zhihua; HAN Guoqi; ZHU Qiankun; GONG Fang; WANG Tianyu

doi:10.1007/s13131-016-0867-0

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Article Navigation > Acta Oceanologica Sinica > 2016 > 35(12): 81-88

CHEN Cheng, MAO Zhihua, HAN Guoqi, ZHU Qiankun, GONG Fang, WANG Tianyu. Latitudinal and interannual variations of the spring phytoplankton bloom peak in the East Asian marginal seas[J]. Acta Oceanologica Sinica, 2016, 35(12): 81-88. doi: 10.1007/s13131-016-0867-0

Citation:

CHEN Cheng, MAO Zhihua, HAN Guoqi, ZHU Qiankun, GONG Fang, WANG Tianyu. Latitudinal and interannual variations of the spring phytoplankton bloom peak in the East Asian marginal seas[J]. Acta Oceanologica Sinica, 2016, 35(12): 81-88. doi: 10.1007/s13131-016-0867-0

Citation:

CHEN Cheng, MAO Zhihua, HAN Guoqi, ZHU Qiankun, GONG Fang, WANG Tianyu. Latitudinal and interannual variations of the spring phytoplankton bloom peak in the East Asian marginal seas[J]. Acta Oceanologica Sinica, 2016, 35(12): 81-88. doi: 10.1007/s13131-016-0867-0

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Latitudinal and interannual variations of the spring phytoplankton bloom peak in the East Asian marginal seas

doi: 10.1007/s13131-016-0867-0

1.
State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China
2.
Biological and Physical Oceanography Section, Fisheries and Oceans Canada, Northwest Atlantic Fisheries Centre, Newfoundland and Labrador, Canada

Received Date: 2015-11-16
Rev Recd Date: 2016-05-03

Abstract

Abstract

Combined studies of latitudinal and interannual variations of annual phytoplankton bloom peak in East Asian marginal seas (17°-58°N, including the northern South China Sea (SCS), Kuroshio waters, the Sea of Japan and the Okhotsk Sea) are rarely. Based on satellite-retrieved ten-year (2003-2012) median timing of the annual Chlorophyll a concentration (Chl a) climax, here we report that this annual spring bloom peak generally delays from the SCS in January to the Okhotsk Sea in June at a rate of (21.20±2.86) km/d (decadal median±SD). Spring bloom is dominant feature of the phytoplankton annual cycle over these regions, except for the SCS which features winter bloom. The fluctuation of the annual peak timing is mainly within ±48 d departured from the decadal median peak date, therefore this period (the decadal median peak date ±48 d) is defined as annual spring bloom period. As sea surface temperature rises, earlier spring bloom peak timing but decreasing averaged Chl a biomass in the spring bloom period due to insufficient light is evident in the Okhotsk Sea from 2003 to 2012. For the rest of three study domains, there are no significant interannual variance trend of the peak timing and the averaged Chl a biomass. Furthermore this change of spring phytoplankton bloom timing and magnitude in the Okhotsk Sea challenges previous prediction that ocean warming would enhance algal productivity at high latitudes.
- latitudinal and interannual variation,
- spring bloom peak,
- phytoplankton phenology,
- East Asian marginal seas,
- climate change

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