Factors regulating the compositions and distributions of dissolved organic matter in the estuaries of Jiaozhou Bay in North China

• Autorzy: Hu Jiaojie , Zou Li , Wang Jian , Ren Qianqian , Xia Bin , Yu Ge

Identyfikatory

DOI

10.1016/j.oceano.2019.09.002

• Języki publikacji: EN

Abstrakty

EN

Water samples collected from the Jiaozhou Bay every two months between April 2016 and February 2017 were analyzed for dissolved organic carbon (DOC), particulate organic carbon (POC), total dissolved carbohydrates (TCHO), total hydrolyzed amino acids (THAA), and chromophoric dissolved organic matter (CDOM) to explore the biogeochemical processes of dissolved organic matter (DOM) in anthropogenic estuarine and coastal environments. In addition, nutrients, chlorophyll a and COD (chemical oxygen demand) in these samples were also analyzed. All parameters exhibited temporal and spatial variations: POC 0.13-22.40 mg/L (average 1.75 mg/L), DOC 0.98-32.75 mg/L (average 5.04 mg/L), COD 0.23-7.58 mg/L (average 1.67 mg/L), TCHO 0.34-14.09 µM (average 3.18 µM), THAA 0.89-8.30 µM (average 4.04 µM), and the absorption coefficient a(355) of CDOM 0.23-16.35 m^− 1 (average 3.09 m^− 1). The temporal and spatial variations in the concentrations of TCHO, THAA, and DOC implied that the DOM in the study areas had a relatively higher biochemical activity. The canonical correspondence analysis (CCA) and maximal information coefficient (MIC) revealed that seasonal variations in temperature and the phosphate concentration were the dominant factors regulating the DOM distributions in Jiaozhou Bay, while riverine inputs and in situ reproduction mainly controlled the DOM compositions.

Słowa kluczowe

EN

estuaries in Jiaozhou Bay; dissolved organic matter; CDOM; carbohydrates; amino acids

• Wydawca: Polish Academy of Sciences, Institute of Oceanology ; Elsevier
• Czasopismo: Oceanologia
• Rocznik: 2020
• Tom: No. 62 (1)
• Strony: 101--110
• Opis fizyczny: Bibliogr. 52 poz., rys., tab., wykr.

Twórcy

autor

Hu Jiaojie

• College of Environmental Science and Engineering, Ocean University of China, Qingdao, China
• SGS-CSTC Standards Technical Services (Qingdao) Co., Ltd., Qingdao, China

autor

Zou Li

• College of Environmental Science and Engineering, Ocean University of China, Qingdao, China
• Key Laboratory of Marine Environmental Science and Ecology, Ocean University of China, Qingdao, China

autor

Wang Jian

• SGS-CSTC Standards Technical Services (Qingdao) Co., Ltd., Qingdao, China

autor

Ren Qianqian

• Key Laboratory of Marine Environmental Science and Ecology, Ocean University of China, Qingdao, China

autor

Xia Bin

• Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China

autor

Yu Ge

• College of Environmental Science and Engineering, Ocean University of China, Qingdao, China
• Key Laboratory of Marine Environmental Science and Ecology, Ocean University of China, Qingdao, China

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).