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  1. F300 宇宙地球環境研究所
  2. F300a 雑誌掲載論文
  3. 学術雑誌

Influence of the Changjiang River on the light absorption properties of phytoplankton from the East China Sea

http://hdl.handle.net/2237/25259
http://hdl.handle.net/2237/25259
a5482070-5012-4f4a-abf3-663b8c821a0f
名前 / ファイル ライセンス アクション
bg-11-1759-2014.pdf bg-11-1759-2014.pdf (917.9 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2016-12-19
タイトル
タイトル Influence of the Changjiang River on the light absorption properties of phytoplankton from the East China Sea
言語 en
著者 Wang, S. Q.

× Wang, S. Q.

WEKO 68272

en Wang, S. Q.

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Ishizaka, J.

× Ishizaka, J.

WEKO 68273

en Ishizaka, J.

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Yamaguchi, H.

× Yamaguchi, H.

WEKO 68274

en Yamaguchi, H.

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Tripathy, S. C.

× Tripathy, S. C.

WEKO 68275

en Tripathy, S. C.

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Hayashi, M.

× Hayashi, M.

WEKO 68276

en Hayashi, M.

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Xu, Y. J.

× Xu, Y. J.

WEKO 68277

en Xu, Y. J.

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Mino, Y.

× Mino, Y.

WEKO 68278

en Mino, Y.

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Matsuno, T.

× Matsuno, T.

WEKO 68279

en Matsuno, T.

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Watanabe, Y.

× Watanabe, Y.

WEKO 68280

en Watanabe, Y.

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Yoo, S. J.

× Yoo, S. J.

WEKO 68281

en Yoo, S. J.

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アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利
言語 en
権利情報 © Author(s) 2014. This work is distributed<br/>under the Creative Commons Attribution 3.0 License.
抄録
内容記述 Phytoplankton light absorption properties were investigated at the surface and subsurface chlorophyll a maximum (SCM) layer in the East China Sea (ECS), a marginal sea which is strongly influenced by the Changjiang discharge in summer. Results from ECS were compared with those from the Tsushima Strait (TS) where the influence of Changjiang discharge is less. The probable controlling factors, packaging effect (cell size) and pigment composition of total chlorophyll a (Tchl a)-specific absorption coefficient (aph*(λ)) were examined by the corresponding measurements of pigments identified by high-performance liquid chromatography. We observed distinct phytoplankton size structure and thereby absorption properties between ECS and TS. At the surface, mixed populations of micro-, nano- and pico-phytoplankton were recorded in ECS while pico-phytoplankton dominated in TS, generating a lower average aph*(λ) in ECS than in TS. Within SCM, average aph*(λ) was higher in ECS than in TS because of the dominance of nano- and micro-phytoplankton in ECS and TS, respectively. By pooling surface and SCM samples, we found regular trends in phytoplankton size-fraction versus Tchl a; and correlations between aph*(λ) and Tchl a consistent with previous observations for the global ocean in TS but not in ECS. In ECS phytoplankton size-fraction was not correlated with Tchl a, which consequently caused poor relationships between aph*(λ) and Tchl a. The abnormal values mainly originated from the surface low-salinity waters and SCM waters beneath them. At high Tchl a, aph*(λ) of these samples was substantially higher compared to the values in TS and from the global regressions, which was attributable to the lower micro-phytoplankton fraction, and higher nano- and/or pico-phytoplankton fractions in ECS. These observations indicated that the distinct light absorption properties of phytoplankton in ECS were possibly influenced by the Changjiang discharge. Our findings imply that general bio-optical algorithms proposed based on the correlations between aph*(λ) and Tchl a or the patterns in size-fraction versus Tchl a are not applicable in ECS, and need to be carefully considered when using these general algorithms in river-influenced regions.
言語 en
内容記述タイプ Abstract
出版者
言語 en
出版者 Copernicus Publications
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.5194/bg-11-1759-2014
ISSN
収録物識別子タイプ PISSN
収録物識別子 1726-4170
書誌情報 en : Biogeosciences

巻 11, p. 1759-1773, 発行日 2014-04-03
著者版フラグ
値 publisher
URI
識別子 http://doi.org/10.5194/bg-11-1759-2014
識別子タイプ DOI
URI
識別子 http://hdl.handle.net/2237/25259
識別子タイプ HDL
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