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Title: Stoichiometry among bioactive trace metals in seawater on the Bering Sea shelf
Authors: Cid, Abigail Parcasio
Urushihara, Syouhei
Minami, Tomoharu
Norisuye, Kazuhiro
Sohrin, Yoshiki  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0001-6744-6048 (unconfirmed)
Author's alias: 宗林, 由樹
Keywords: Eastern Bering Sea
Seawater
Bioactive trace metals
Total dissolvable species
Dissolved species
Labile particulate species
Sectional distribution
Enrichment factor
Stoichiometry
Speciation
Issue Date: Dec-2011
Publisher: Oceanographic Society of Japan and Springer
Journal title: Journal of Oceanography
Volume: 67
Issue: 6
Start page: 747
End page: 764
Abstract: The distribution of Al, Mn, Fe, Co, Ni, Cu, Zn, Cd, and Pb in seawater was investigated on the Bering Sea shelf (56–64°N, 165–169°W) in September 2000. The unfiltered and filtered seawater samples were used for determination of total dissolvable (TD) and dissolved (D) metals (M), respectively. The TD-M concentrations were generally higher than in the Pacific Ocean. TD-Cd was highest in deep water of the outer shelf domain and dominated by dissolved species. The other TD-M were highest at stations close to the Yukon River delta and had higher fractions of labile particulate (LP) species that were obtained as the difference between TD-M and D-M. Dissolved Al, Ni, and Cu were characterized by input from the Yukon River. Dissolved Mn and Co showed maximums on the bottom of the coastal domain, suggesting influence of sedimentary Mn reduction. The correlations of D-Zn, D-Cd, and macronutrients indicated their distributions were largely controlled through uptake by microorganisms and remineralization from settling particles. All these three processes (river input, sedimentary reduction, and biogeochemical cycle) had an influence on the distribution of D-Fe. D-Pb was fairly uniformly distributed in the study area. The stoichiometry of D-M in the Bering Sea shelf showed enrichment of Co and Pb and depletion of Ni, Cu, Zn, and Cd compared with that in the North Pacific. The LP-M/LP-Al ratio revealed significant enrichment of the other eight metals relative to their crustal abundance, suggesting importance of formation of Fe–Mn oxides and adsorption of trace metals on the oxides.
Rights: The final publication is available at www.springerlink.com
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
URI: http://hdl.handle.net/2433/151713
DOI(Published Version): 10.1007/s10872-011-0070-z
Appears in Collections:Journal Articles

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