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Redox-dependent phosphorus burial and regeneration in an offshore sulfidic sediment core in North Yellow Sea, China.
Mar Pollut Bull. 2019 Dec; 149:110582.MP

Abstract

Phosphorus (P) pollution can trigger severe marine eutrophication, which further leads to harmful algal blooms, and a deterioration of sea water quality. The P burial and regeneration in offshore sediments can directly affect the eutrophication levels of estuarine and coastal ecosystems. Although many researches on redox-dependent P burial and regeneration were studied, such process in the presence of silicate is still poorly understood, and the effects of pyrite formation on organic P (OP) burial and regeneration also remain unclear. In this study, a sulfidic sediment core was collected in the offshore of an estuary in the north Yellow Sea, China. Results indicated that indigenous biological input was found to be the primary source of organic matter in upper sediments. The regenerated P under reducing conditions was dominated by labile FeP and OP. The PO43- released from FeP and OP that could be captured by Al/Fe/Mn (oxyhydr) oxides in surface sediments and Ca minerals in deep sediments. CaP, AlP, unreactive Al/Fe-Si-P and some stable metal chelated OP were the main burial P fractions. Sulfate reduction and formation of insoluble metal sulfides including the pyrite promoted OP decomposition by anaerobic decomposition, removing metal ions from the "metal-OP" chelates and restoring the phosphatase activity.

Authors+Show Affiliations

Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China; University of Chinese Academy of Sciences, Beijing, China. Electronic address: gqzhao@yic.ac.cn.Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China. Electronic address: yqsheng@yic.ac.cn.Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China; University of Chinese Academy of Sciences, Beijing, China. Electronic address: jiangming17@mails.ucas.edu.cn.Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China. Electronic address: xlyin@yic.ac.cn.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31550573

Citation

Zhao, Guoqiang, et al. "Redox-dependent Phosphorus Burial and Regeneration in an Offshore Sulfidic Sediment Core in North Yellow Sea, China." Marine Pollution Bulletin, vol. 149, 2019, p. 110582.
Zhao G, Sheng Y, Jiang M, et al. Redox-dependent phosphorus burial and regeneration in an offshore sulfidic sediment core in North Yellow Sea, China. Mar Pollut Bull. 2019;149:110582.
Zhao, G., Sheng, Y., Jiang, M., & Yin, X. (2019). Redox-dependent phosphorus burial and regeneration in an offshore sulfidic sediment core in North Yellow Sea, China. Marine Pollution Bulletin, 149, 110582. https://doi.org/10.1016/j.marpolbul.2019.110582
Zhao G, et al. Redox-dependent Phosphorus Burial and Regeneration in an Offshore Sulfidic Sediment Core in North Yellow Sea, China. Mar Pollut Bull. 2019;149:110582. PubMed PMID: 31550573.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Redox-dependent phosphorus burial and regeneration in an offshore sulfidic sediment core in North Yellow Sea, China. AU - Zhao,Guoqiang, AU - Sheng,Yanqing, AU - Jiang,Ming, AU - Yin,Xiuli, Y1 - 2019/09/26/ PY - 2019/05/12/received PY - 2019/09/02/revised PY - 2019/09/07/accepted PY - 2019/9/25/pubmed PY - 2020/2/6/medline PY - 2019/9/25/entrez KW - (31)P NMR KW - Marine sediments KW - P sequential extraction KW - Redox KW - Sulfide SP - 110582 EP - 110582 JF - Marine pollution bulletin JO - Mar Pollut Bull VL - 149 N2 - Phosphorus (P) pollution can trigger severe marine eutrophication, which further leads to harmful algal blooms, and a deterioration of sea water quality. The P burial and regeneration in offshore sediments can directly affect the eutrophication levels of estuarine and coastal ecosystems. Although many researches on redox-dependent P burial and regeneration were studied, such process in the presence of silicate is still poorly understood, and the effects of pyrite formation on organic P (OP) burial and regeneration also remain unclear. In this study, a sulfidic sediment core was collected in the offshore of an estuary in the north Yellow Sea, China. Results indicated that indigenous biological input was found to be the primary source of organic matter in upper sediments. The regenerated P under reducing conditions was dominated by labile FeP and OP. The PO43- released from FeP and OP that could be captured by Al/Fe/Mn (oxyhydr) oxides in surface sediments and Ca minerals in deep sediments. CaP, AlP, unreactive Al/Fe-Si-P and some stable metal chelated OP were the main burial P fractions. Sulfate reduction and formation of insoluble metal sulfides including the pyrite promoted OP decomposition by anaerobic decomposition, removing metal ions from the "metal-OP" chelates and restoring the phosphatase activity. SN - 1879-3363 UR - https://www.unboundmedicine.com/medline/citation/31550573/Redox_dependent_phosphorus_burial_and_regeneration_in_an_offshore_sulfidic_sediment_core_in_North_Yellow_Sea_China_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0025-326X(19)30730-1 DB - PRIME DP - Unbound Medicine ER -