Seasonal variations in the abundance and sinking flux of biogenic silica in Daya Bay, northern South China Sea

Zhao, Xiufeng; Yang, Weifeng; Ma, Haoyang; Li, Junjie; Chen, Min; Fang, Ziming; Zhang, Xiao; Zeng, Jian; Qiu, Yusheng; Zheng, Minfang

doi:10.1016/j.oceano.2018.11.003

Artykuł - szczegóły

Tytuł artykułu

Seasonal variations in the abundance and sinking flux of biogenic silica in Daya Bay, northern South China Sea

Autorzy

Zhao Xiufeng , Yang Weifeng , Ma Haoyang , Li Junjie , Chen Min , Fang Ziming , Zhang Xiao , Zeng Jian , Qiu Yusheng , Zheng Minfang

Wybrane pełne teksty z tego czasopisma

Identyfikatory

DOI

10.1016/j.oceano.2018.11.003

Warianty tytułu

Języki publikacji

Abstrakty

Coastal seas account for > 50% of the biogenic silica (BSi) production in marine environments. However, BSi sinking is poorly understood. Here, seasonal variations in the abundance and sinking flux of BSi were investigated in Daya Bay, in the northern South China Sea. The highest BSi concentrations occurred in summer, averaging 8.04 ± 5.48 μmol L^-1 (±SD), followed by autumn (5.51 ± 3.11 μmol L^-1) and spring (3.76 ± 3.06 μmol L^-1). The lowest BSi concentration of 2.93 ± 1.34 μmol L^-1 was observed in winter. Based on²³⁴Th/²³⁸U disequilibria, the average BSi sinking fluxes were 7.08 ± 8.62, 10.01 ± 13.95, and 8.30 ± 13.06 mmol Si m^-2 d^-1 in spring, summer, and autumn, respectively. The lowest flux of 4.19 ± 3.98 mmol Si m^-2 d^-1was measured in winter. Together with nitrogen fluxes, the Si:N sinking ratios were 0.8:1.0, 1.5:1.0, 1.6:1.0, and 1.4:1.0 in spring, summer, autumn, and winter, respectively, indicating that particle sinking induces the faster removal of Si compared to N in Daya Bay.

Słowa kluczowe

biogenic silica dissolved silicate sinking flux thorium Daya Bay

Wydawca

Polish Academy of Sciences, Institute of Oceanology
Elsevier

Czasopismo

Oceanologia

Rocznik

2019

Tom

No. 61 (2)

Strony

239--251

Opis fizyczny

Bibliogr. 84 poz., mapa, rys., tab., wykr.

Twórcy

autor

Zhao Xiufeng

State Key Laboratory of Marine Environmental Science and College of Ocean and Earth Sciences, Xiamen University, Xiamen, China

autor

Yang Weifeng

wyang@xmu.edu.cn

State Key Laboratory of Marine Environmental Science and College of Ocean and Earth Sciences, Xiamen University, Xiamen, China

autor

Ma Haoyang

State Key Laboratory of Marine Environmental Science and College of Ocean and Earth Sciences, Xiamen University, Xiamen, China

autor

Li Junjie

State Key Laboratory of Marine Environmental Science and College of Ocean and Earth Sciences, Xiamen University, Xiamen, China

autor

Chen Min

State Key Laboratory of Marine Environmental Science and College of Ocean and Earth Sciences, Xiamen University, Xiamen, China

autor

Fang Ziming

State Key Laboratory of Marine Environmental Science and College of Ocean and Earth Sciences, Xiamen University, Xiamen, China

autor

Zhang Xiao

State Key Laboratory of Marine Environmental Science and College of Ocean and Earth Sciences, Xiamen University, Xiamen, China

autor

Zeng Jian

State Key Laboratory of Marine Environmental Science and College of Ocean and Earth Sciences, Xiamen University, Xiamen, China

autor

Qiu Yusheng

State Key Laboratory of Marine Environmental Science and College of Ocean and Earth Sciences, Xiamen University, Xiamen, China

autor

Zheng Minfang

State Key Laboratory of Marine Environmental Science and College of Ocean and Earth Sciences, Xiamen University, Xiamen, China

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).

Typ dokumentu

Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-89592327-fa6a-4ea0-b513-68a9a3218519