Unprecedent green macroalgae bloom: mechanism and implication to disaster prediction and prevention

Autor: Mengmeng Cao, Xuyan Li, Tingwei Cui, Xinliang Pan, Yan Li, Yanlong Chen, Ning Wang, Yanfang Xiao, Xingai Song, Yuzhu Xu, Runa A, Bing Mu, Song Qing, Rongjie Liu, Wenjing Zhao, Yuhai Bao, Jie Zhang, Lan Wei
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: International Journal of Digital Earth, Vol 16, Iss 1, Pp 3772-3793 (2023)
Druh dokumentu: article
ISSN: 1753-8947
1753-8955
17538947
DOI: 10.1080/17538947.2023.2257658
Popis: Green macroalgae bloom (GMB), with the dominant species of Ulva prolifera, has regularly occurred since 2007 along the China coast. Although disaster prevention and control achieved favorable results in 2020, the satellite-observed GMB annual maximum coverage (AMC) rebounded sharply in 2021 to an unprecedented level. The reasons for this rebound and the significant interannual variability over past 15 years are still open questions. Here, by using long-term time-series (2007–2022) optical and Synthetic Aperture Radar satellite observations (1000+ scenes), meteorological data and water quality statistics, the mechanism analysis was performed by exploring effects from natural factors and human activities. Two key determinants for AMC are successfully identified from numerous potential factors which are the macroalgae distribution in a key area (the Subei Shoal) during a critical period (from April to May 20) and the nutrient availability. Furthermore, by using these two parameters, a novel model for AMC prediction (R2 = 0.87, p
Databáze: Directory of Open Access Journals
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