Wildfires enhance phytoplankton production in tropical oceans

Autor: Liu, Dongyan, Zhou, Chongran, Keesing, John K., Serrano, Oscar, Werner, Axel, Fang, Yin, Chen, Yingjun, Masqué Barri, Pere, Kinloch, Janine, Sadekov, Aleksey, Du, Yan, Universitat Autònoma de Barcelona. Departament de Física
Rok vydání: 2021
Předmět:
Zdroj: Dipòsit Digital de Documents de la UAB
Universitat Autònoma de Barcelona
Digital.CSIC. Repositorio Institucional del CSIC
instname
ISSN: 2041-1723
Popis: Este artículo contiene 9 páginas, 4 figuras, 2 tablas.
Wildfire magnitude and frequency have greatly escalated on a global scale. Wildfire products rich in biogenic elements can enter the ocean through atmospheric and river inputs, but their contribution to marine phytoplankton production is poorly understood. Here, using geochemical paleo-reconstructions, a century-long relationship between wildfire magnitude and marine phytoplankton production is established in a fire-prone region of Kimberley coast, Australia. A positive correlation is identified between wildfire and phytoplankton production on a decadal scale. The importance of wildfire on marine phytoplankton production is statistically higher than that of tropical cyclones and rainfall, when strong El Niño Southern Oscillation coincides with the positive phase of Indian Ocean Dipole. Interdecadal chlorophyll-a variation along the Kimberley coast validates the spatial connection of this phenomenon. Findings from this study suggest that the role of additional nutrients from wildfires has to be considered when projecting impacts of global warming on marine phytoplankton production.
This work was supported by the National Natural Science Foundation of China (42030402, 41876127) and the Western Australian Marine Sciences Institution. O.S. was supported by I + D + i projects RYC2019-027073-I and PIE HOLOCENO 20213AT014 funded by MCIN/AEI/10.13039/501100011033 and FEDER. Funding was provided to P.M. through an Australian Research Council LIEF Project (LE170100219). This work is contributing to the ICTA “Unit of Excellence” (MinECo, MDM2015-0552).
Databáze: OpenAIRE
Externí odkaz: