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Effects of an Episodic Storm-Induced Flooding Event on the Biogeochemistry of a Shallow, Highly Turbid, Semi-Enclosed Embayment (Laizhou Bay, Bohai Sea)

Author

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  • Ling Meng

    (CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
    University of Chinese Academy of Sciences, Beijing 100049, China)

  • Qianguo Xing

    (CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
    University of Chinese Academy of Sciences, Beijing 100049, China)

  • Xuelu Gao

    (CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
    University of Chinese Academy of Sciences, Beijing 100049, China)

  • Diansheng Ji

    (Yantai Marine Environmental Monitoring Central Station, State Oceanic Administration (SOA), Yantai 264006, China)

  • Fanzhu Qu

    (Institute for Advanced Study of Coastal Ecology, Ludong University, Yantai 264025, China)

  • Xiaoqing Wang

    (Yantai Marine Environmental Monitoring Central Station, State Oceanic Administration (SOA), Yantai 264006, China)

  • Ling Ji

    (Yantai Marine Environmental Monitoring Central Station, State Oceanic Administration (SOA), Yantai 264006, China)

Abstract

Episodic storm-induced flooding is becoming more frequent with a warming climate, which may alter the biogeochemical properties and conditions of estuaries. However, the effects of such extreme events on semi-enclosed bay ecosystems have not been fully investigated because of the difficulty in collecting in situ samples. To address this issue, a comparative study was carried out to understand the biogeochemical changes in Laizhou Bay, a shallow, highly turbid, semi-enclosed bay, by coupling satellite data and surface water samplings collected during an episodic flooding event (August 2018) and during a non-flooding period (August 2017). The results showed that the 2018 Shouguang flood delivered large amounts of suspended solids, phosphorus, and organic matter-enriched terrigenous materials into Laizhou Bay and enhanced the offshore expansion of the low-salinity seawater plume and associated nutrient fronts. Water total suspended solid (TSS) particle and chlorophyll a (Chl-a) concentrations increased by 23.79 g/m 3 and 0.63 mg/m 3 , respectively, on average in the freshwater mixing water plume around the Mi River. Episodic flooding is a crucial driver which temporally dominates the spatial patterns of water biogeochemistry. These results are essential to anticipate the ecosystem response of estuarine regions to the high episodic freshwater flow associated with the increasing storms.

Suggested Citation

  • Ling Meng & Qianguo Xing & Xuelu Gao & Diansheng Ji & Fanzhu Qu & Xiaoqing Wang & Ling Ji, 2022. "Effects of an Episodic Storm-Induced Flooding Event on the Biogeochemistry of a Shallow, Highly Turbid, Semi-Enclosed Embayment (Laizhou Bay, Bohai Sea)," Sustainability, MDPI, vol. 15(1), pages 1-12, December.
    • Handle: RePEc:gam:jsusta:v:15:y:2022:i:1:p:563-:d:1018409
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    References listed on IDEAS

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    1. William Ingram, 2016. "Increases all round," Nature Climate Change, Nature, vol. 6(5), pages 443-444, May.
    2. Shuolin Geng & Qi Zhou & Mingjie Li & Dianxing Song & Yanjun Wen, 2021. "Spatial–temporal differences in disaster perception and response among new media users and the influence factors: a case study of the Shouguang Flood in Shandong province," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 105(2), pages 2241-2262, January.
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