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Diagenesis of sulfur, iron and phosphorus in sediments of an urban bay impacted by multiple anthropogenic perturbations.
Mar Pollut Bull. 2019 Sep; 146:366-376.MP

Abstract

Solid-phase speciation and porewater chemistry measured by the diffusive gradients in thin films (DGT) technique were used to understand the diagenesis of sulfur (S), iron (Fe), and phosphorus (P) in sediments of Jiaozhou Bay (China), which has been impacted by multiple anthropogenic perturbations. Despite water eutrophication, sediments of the bay are low in organic carbon and sulfide, but high in unsulfidized Fe(II). Dissimilatory iron reduction (DIR) prevails in sediments of the bay, and there is no evidence for responses of S and Fe diagenesis to the water eutrophication, which is largely attributable to unique depositional and diagenetic regimes in association with multiple anthropogenic perturbations. Good coupling of porewater Fe2+ and P in the porewaters suggests that P mobilization is driven mainly by DIR. Low Fe2+/P ratios in porewaters imply that oxidative regeneration of Fe oxides within the upper sediments is incapable of efficiently scavenging upward diffusing P.

Authors+Show Affiliations

Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China. Electronic address: zhumaoxu@ouc.edu.cn.Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31426169

Citation

Ma, Wei-Wei, et al. "Diagenesis of Sulfur, Iron and Phosphorus in Sediments of an Urban Bay Impacted By Multiple Anthropogenic Perturbations." Marine Pollution Bulletin, vol. 146, 2019, pp. 366-376.
Ma WW, Zhu MX, Yang GP, et al. Diagenesis of sulfur, iron and phosphorus in sediments of an urban bay impacted by multiple anthropogenic perturbations. Mar Pollut Bull. 2019;146:366-376.
Ma, W. W., Zhu, M. X., Yang, G. P., Li, W. J., Meng, T., & Li, T. (2019). Diagenesis of sulfur, iron and phosphorus in sediments of an urban bay impacted by multiple anthropogenic perturbations. Marine Pollution Bulletin, 146, 366-376. https://doi.org/10.1016/j.marpolbul.2019.06.081
Ma WW, et al. Diagenesis of Sulfur, Iron and Phosphorus in Sediments of an Urban Bay Impacted By Multiple Anthropogenic Perturbations. Mar Pollut Bull. 2019;146:366-376. PubMed PMID: 31426169.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Diagenesis of sulfur, iron and phosphorus in sediments of an urban bay impacted by multiple anthropogenic perturbations. AU - Ma,Wei-Wei, AU - Zhu,Mao-Xu, AU - Yang,Gui-Peng, AU - Li,Wen-Jun, AU - Meng,Tao, AU - Li,Tie, Y1 - 2019/07/09/ PY - 2019/04/24/received PY - 2019/06/24/revised PY - 2019/06/30/accepted PY - 2019/8/21/pubmed PY - 2019/12/4/medline PY - 2019/8/21/entrez KW - Anthropogenic perturbations KW - Dissimilatory iron reduction KW - Jiaozhou Bay KW - Marine sediments KW - Phosphorus mobilization KW - Sulfate reduction SP - 366 EP - 376 JF - Marine pollution bulletin JO - Mar Pollut Bull VL - 146 N2 - Solid-phase speciation and porewater chemistry measured by the diffusive gradients in thin films (DGT) technique were used to understand the diagenesis of sulfur (S), iron (Fe), and phosphorus (P) in sediments of Jiaozhou Bay (China), which has been impacted by multiple anthropogenic perturbations. Despite water eutrophication, sediments of the bay are low in organic carbon and sulfide, but high in unsulfidized Fe(II). Dissimilatory iron reduction (DIR) prevails in sediments of the bay, and there is no evidence for responses of S and Fe diagenesis to the water eutrophication, which is largely attributable to unique depositional and diagenetic regimes in association with multiple anthropogenic perturbations. Good coupling of porewater Fe2+ and P in the porewaters suggests that P mobilization is driven mainly by DIR. Low Fe2+/P ratios in porewaters imply that oxidative regeneration of Fe oxides within the upper sediments is incapable of efficiently scavenging upward diffusing P. SN - 1879-3363 UR - https://www.unboundmedicine.com/medline/citation/31426169/Diagenesis_of_sulfur_iron_and_phosphorus_in_sediments_of_an_urban_bay_impacted_by_multiple_anthropogenic_perturbations_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0025-326X(19)30529-6 DB - PRIME DP - Unbound Medicine ER -