Benthic exchange rates of dissolved silicate at the sediment-water interface in the Jiaozhou Bay and the impact of relevant environmental factors

Wang Yalu; Yuan Huamao; Song Jinming; Li Xuegang; Li Ning; Qu Baoxiao; Kang Xuming; Wang Qidong; Xing Jianwei; Liang Xianmeng

doi:10.3969/j.issn.0253-4193.2016.12.006

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Wang Yalu, Yuan Huamao, Song Jinming, Li Xuegang, Li Ning, Qu Baoxiao, Kang Xuming, Wang Qidong, Xing Jianwei, Liang Xianmeng. Benthic exchange rates of dissolved silicate at the sediment-water interface in the Jiaozhou Bay and the impact of relevant environmental factors[J]. Haiyang Xuebao, 2016, 38(12): 55-65. doi: 10.3969/j.issn.0253-4193.2016.12.006

Citation:

Wang Yalu, Yuan Huamao, Song Jinming, Li Xuegang, Li Ning, Qu Baoxiao, Kang Xuming, Wang Qidong, Xing Jianwei, Liang Xianmeng. Benthic exchange rates of dissolved silicate at the sediment-water interface in the Jiaozhou Bay and the impact of relevant environmental factors[J]. Haiyang Xuebao, 2016, 38(12): 55-65. doi: 10.3969/j.issn.0253-4193.2016.12.006

Citation:

Wang Yalu, Yuan Huamao, Song Jinming, Li Xuegang, Li Ning, Qu Baoxiao, Kang Xuming, Wang Qidong, Xing Jianwei, Liang Xianmeng. Benthic exchange rates of dissolved silicate at the sediment-water interface in the Jiaozhou Bay and the impact of relevant environmental factors[J]. Haiyang Xuebao, 2016, 38(12): 55-65. doi: 10.3969/j.issn.0253-4193.2016.12.006

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Benthic exchange rates of dissolved silicate at the sediment-water interface in the Jiaozhou Bay and the impact of relevant environmental factors

doi: 10.3969/j.issn.0253-4193.2016.12.006

1.
Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;University of Chinese Academy of Sciences, Beijing 100039, China;Marine Ecology and Environmental Science Laboratory, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China
2.
Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Marine Ecology and Environmental Science Laboratory, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China

Received Date: 2016-03-25

Abstract

Abstract

The benthic exchange rates of dissolved silicate (DSi) at the sediment-water interface in Jiaozhou Bay were measured by intact sediment cores incubation. Further, the impacts of environmental factors on the exchange rate were also discussed. Silicate transported from sediment to overlying water, and the exchange rate ranged from 947 to 4 889 μmol/(m²·d) with a mean of 1 819 μmol/(m²·d). Total organic carbon (TOC) and chlorophyll a(Chl a) in surface sediment which were relative with the biological activity were the dominant factors controlling the exchange rate of DSi. Moreover, water ratio(φ), biogenic silicate(BSi), clay content of sediment and DSi in the pore water also had important effects on the exchange process. As a result, the exchange of DSi at the sediment-water interface in Jiaozhou Bay was a consequence of dissolution-dilution process which was dominantly controlled by biological activity. Grain diameter of sediment and DSi in bottom water, however, were not relatively important when compared with those factors.
- Jiaozhou Bay,
- sediment-water interface,
- silicate,
- exchange rate,
- benthic environmental factor

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References(32)

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