Dynamics of Sediment Microbial Community Respiration during the Period of Hypoxia in Omura Bay, West Kyushu, Japan
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- Mori Fumiaki
- 長崎大学大学院水産・環境科学総合研究科
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- Kondo Ryuji
- 福井県立大学海洋生物資源学部海洋生物資源学科
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- Umezawa Yu
- 長崎大学大学院水産・環境科学総合研究科
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- Matsuoka Kazumi
- 長崎大学水産・環境科学総合研究科附属環東シナ海環境資源 研究センター
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- Suzaki Hirokazu
- 長崎大学大学院生産科学研究科
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- Nakata Hideaki
- 長崎大学水産学部
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- Wada Minoru
- 長崎大学大学院水産・環境科学総合研究科
Bibliographic Information
- Other Title
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- 西九州・大村湾の貧酸素水塊形成期における堆積物微生物群集呼吸の動態
- ニシキュウシュウ ・ オオムラワン ノ ヒンサンソスイカイ ケイセイキ ニ オケル タイセキブツ ビセイブツ グンシュウ コキュウ ノ ドウタイ
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Abstract
In this study, we aimed to reveal the temporal dynamics of microbial community respiration in the sediment of Omura Bay,Kyushu, Japan. Along with CTD profiling of the water column in the central basin of the bay from May through December 2011, we estimated the potential microbial community respiration by an in vivo electron transport system activity(ETSA)method. This method allowed us to estimate the whole oxygen consumption rate(WOCR)and chemical oxygen consumption rate(COCR).WOCR and COCR increased from July through August, and a significant negative correlation was found between dissolved oxygen (DO)concentration in the bottom layer and WOCR during the period of bottom hypoxia(from July through September)(r=-0.95, p=0.05, n=4). It was further demonstrated that the WOCR correlated well with the amount of chlorophyll a integrated for the entire water column at the date of sediment sampling in the previous month(WOCR : r=0.84, p=0.07; COCR: r=0.89, p=0.04, n=5). These results strongly suggest that sediment oxygen consumption in central Omura Bay varied in response to the development of a hypoxic water mass in the bay, and that vertical flux of internal primary production in the water column fuels the sediment respiratory etabolism.
Journal
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- Bulletin on Coastal Oceanography
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Bulletin on Coastal Oceanography 53 (1), 87-95, 2015
Coastal Oceanography Research Committee, the Oceanographic Society of Japan
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Details 詳細情報について
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- CRID
- 1390002184873996800
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- NII Article ID
- 130007797522
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- NII Book ID
- AN10492259
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- ISSN
- 24344036
- 09143882
- 13422758
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- NDL BIB ID
- 026721462
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed