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Latitudinal carbon productivity in the Bering and Chukchi Seas during the summer in 2007

Cited 14 time in scopus
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Title
Latitudinal carbon productivity in the Bering and Chukchi Seas during the summer in 2007
Authors
Lee, Sang Heon
Yun, Mi Sun
Kim, Bo Kyung
Saitoh, Sei-Ichi
Kang, Chang-Keun
Kang, Sung-Ho
Whitledge, Terry E.
Subject
Oceanography
Keywords
Phytoplankton; Bering Sea; Chukchi Sea; Carbon uptake rates; IPY; ship Oshoro Maru
Issue Date
2013
Citation
Lee, Sang Heon, et al. 2013. "Latitudinal carbon productivity in the Bering and Chukchi Seas during the summer in 2007". Continental ShelfResearch, 59(1): 28-36.
Abstract
The Bering and Chukchi Seas are well known to be one of the most productive regions in the world. However, these regions have many climate induced-environmental changes over the last decades. Whether these changes enhance or reduce the overall primary production is important in major ecosystems of the Bering and Chukchi Seas. During the Oshoro Maru cruise in 2007 as an IPY (International Polar Year) event of Hokkaido University, nitrogen and carbon uptake rates of phytoplankton were measured at 15 productivity stations in the Bering and Chukchi Seas, using a 13C&15N dual isotope tracer technique. The 2007 mean daily carbon uptake rates of phytoplankton were 0.20 and 0.16 g C m-2 d-1, respectively in the southern and northern Bering Sea. These rates are lower than those reported previously in the regions mainly because of the well-known strong seasonal variation of the carbon uptake rate between May (bloom period) and July (post-bloom period this cruise). In the Chukchi Sea, the mean uptake rates from this study were 1.63 and 0.18 g Cm&-2d -1, respectively in the central and northern regions which are noticeably lower than those reported previously in decades ago. Based on the enhancement experiments,lightisanimportantcontrollingfactorforthephytoplanktonproductivity ratesintheBeringandChukchiSeasduringthecruiseperiodasindicatedbyhighercarbonuptakerates with increasedlightconditions.Accordingly,nutrientsmightnotbethecontrollingfactor,giventhere wereonlyminimalincreasesofprimaryproductivityrateswithhighernitrateconcentrations.
DOI
http://dx.doi.org/10.1016/j.csr.2013.04.004
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