Abstract
The distribution of chlorophyll a (Chl a) and its relationships with physical and chemical parameters in different regions of the Bering Sea were discussed in July 2010. The results showed the seawater column Chl a concentrations were 13.41–553.89 mg/m2 and the average value was 118.15 mg/m2 in the study areas. The horizontal distribution of Chl a varied remarkably from basin to shelf in the Bering Sea. The regional order of Chl a concentrations from low to high was basin, slope, outer shelf, inner shelf, and middle shelf. The vertical distribution of Chl a was grouped mainly from single-peak type in basin, slope, outer shelf, and middle shelf, where the deep Chl a maxima (DCM) layer was observed at 25–50 m, 30–35 m, 36–44 m, and 37–47 m, respectively. The vertical distribution of Chl a mainly had three basic patterns: standard single-peak type, surface maximum type, and bottom maximum type in the inner shelf. The analysis also showed that the transportation of ocean currents may control the distribution of Chl a, and the effects were not simple in the basin of the Bering Sea. There was a positive correlation between Chl a and temperature, but no significant correlation between Chl a and nutrients. The Bering Sea slope was an area deeply influenced by slope current. Silicate was the factor that controlled the distribution of Chl a within parts of the water in the slope. Light intensity was an important environmental factor in controlling seawater column Chl a in the shelf, where Chl a was limited by nitrate rather than phosphate within the upper water. Meanwhile, there was a positive relationship between Chl a and salinity. Algal blooms broke out at Sta. B6 of the southwestern St. Lawrence Island and Stas F6 and F11 in the middle of the Bering Strait.
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References
Banse K, English D C. 1999. Comparing phytoplankton seasonality in the eastern and western subarctic Pacific and the western Bering Sea. Prog Oceanogr, 43: 235–288
Berger W H, Fischer K, Lai C, et al. 1987. Ocean productivity and organic carbon flux, part I: Overview and maps of primary production and export production. Scripps Institution of Oceanography SIO Reference, 87(30): 1–67
Chen Liqi, Gao Zhongyong, Wang Weiqiang, et al. 2003. The distribution and influence to arctic carbon sink of CO2 in the Bering Sea. Science in China (Series D), 8: 781–790
Chen Liqi, Zhao Jinping, Bian Lingen. 2003. Marine Environment and Air-sea Interaction in the Arctic Region (in Chinese). Beijing: China Ocean Press, 1–300
Coale K H, Johnson K S, Fitzwater S E, et al. 1996. A massive phytoplankton bloom induced by an ecosystem-scale iron fertilization experiment in the equatorial Pacific Ocean. Nature, 383: 496–500
Gao Shengquan, Chen Jianfang, Li Hongliang, et al. 2011. The distribution and structural conditions of nutrients in the Bering Sea in the summer of 2008. Acta Oceanologica Sinica (in Chinese), 33(2): 157–164
Grasshoff K, Ehrhard T M, Kremling K. 1999. Methods of Seawater Analysis. 3rd ed. Weinheim: Verlag Chemie Gmbh, 600
Heimdal B R. 1989. Arctic ocean phytoplankton. In: Herman Y, ed. The Arctic Seas. New York: Van Nostrand Reinnold Company, 193–222
Koide I, Ogawa H, Nagala T, et al. 2001. Silicate to nitrate ratio of the upper sub-arctic Pacific and the Bering Sea Basin in summer: its implication for phytoplankton dynamics. Journal of Oceanography, 57: 255–259
Liu Zilin, Chen Jianfang, Chen Zhongyuan, et al. 2006. Primary productivity and the standing stock of photoplankton in the Bering Sea during the summer of 2003. Acta Ecological Sinica (in Chinese), 26(5): 1345–1347
Liu Zilin, Chen Jianfang, Liu Yanlan, et al. 2011. The size-fractionated chlorophyll a concentration and primary productivity in the Bering Sea in the summer of 2008. Acta Oceanologica Sinica (in Chinese), 33(3): 148–156
Martin J H, Fitzwater S E. 1988. Iron deficiency limits phytoplankton growth in the north-east Pacific subarctic. Nature, 331: 341–342
Mordasova N V, Metreveli M P, Venttsel M V. 1995. Phytoplankton pigments in the western Bering Sea. In: Kotenev B N, Sapozhnikov V V, eds. Multiple Investigations of the Bering Sea Ecosystem. Moskva: VNIRO, 255–265
Nelson D M, Smith J W. 1991. Sverdrup revisited: Critical depths, maximum chlorophyll levels, and the control of Southern Ocean productivity by the irradiance-mixing regime. Limnol Oceanogr, 36: 1651–1656
Shen Guoying, Shi Bingzhang. 2002. Marine Ecology (in Chinese). 2nd ed. Beijing: Science Press, 100–230
Takahashi K. 1998. The Bering and Okhot sk Seas: Modern and past paleoceanographic changes and gateway impact. Journal of Asian Earth Sciences, 16(1): 49–58
Takeda S. 1998. Influence of iron availability on nutrient consumption ratio of diatoms in oceanic waters. Nature, 393: 775–776
Tyrrell T. 1999. The relative influences of nitrogen and phosphorus on oceanic primary production. Nature, 400: 525–531
Wheeler P A, Kokkinakis S A. 1990. Ammonium recycling limits nitrate use in the oceanic subarctic Pacific. Limnol Oceanogr, 35: 1268–1275
Yentsch C S, Menzel D W. 1963. A method for the determination of phytoplankton chlorophyll and phaeophytin by fluorescence. Deep-Sea Research, 10: 221–231
Yu Xingguan. 2011. Report of 2010 Chinese Arctic Research Expedition (in Chinese). Beijing: China Ocean Press, 1–300
Zhang Haisheng. 2009. Report of 2008 Chinese Arctic Research Expedition (in Chinese). Beijing: China Ocean Press, 1–9
Zhang Wuchang, Sun Song, Li Chaolun, et al. 2000. A simple nutrient enrichment incubation in the Bering Sea. Chinese Journal of Polar Research, 12(4): 245–251
Zhang Zhanhai. 2004. Report of 2003 Chinese Arctic Research Expedition (in Chinese). Beijing: China Ocean Press, 1–15
Zhang Zhanhai. 2011. Arctic Ocean Environment in Rapid Change (in Chinese). Beijing: Science Press, 3–5
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Foundation item: The Scientific Research Foundation of the Third Institute of Oceanography under contract No. 2010001[HE10001-10(9)]; the Public Science and Technology Research Funds Projects of Ocean under contract No. 201105022-2.
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Kang, J., Chen, X. & Zhang, M. The distribution of chlorophyll a and its influencing factors in different regions of the Bering Sea. Acta Oceanol. Sin. 33, 112–119 (2014). https://doi.org/10.1007/s13131-014-0496-4
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DOI: https://doi.org/10.1007/s13131-014-0496-4