Wildfires enhance phytoplankton production in tropical oceans
Liu, Dongyan (East China Normal University. Institute of Eco-Chongming)
Zhou, Chongran (East China Normal University. Institute of Eco-Chongming)
Keesing, John K. (University of Western Australia Oceans Institute)
Serrano, Oscar (Centre d'Estudis Avançats de Blanes)
Werner, Axel (Edith Cowan University. School of Science and Centre for Marine Ecosystems Research)
Fang, Yin (Shanghai Ocean University. College of Marine Ecology and Environment)
Chen, Yingjun (Fudan University. Department of Environmental Science and Engineering)
Masqué Barri, Pere (Universitat Autònoma de Barcelona. Institut de Ciència i Tecnologia Ambientals)
Kinloch, Janine (Bentley Delivery Centre. Department of Biodiversity, Conservation and Attractions)
Sadekov, Aleksey (University of Western Australia. Ocean Graduate School)
Du, Yan (Chinese Academy of Sciences)
Universitat Autònoma de Barcelona. Departament de Física

Data:	2022
Resum:	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.
Ajuts:	Ministerio de Ciencia e Innovación RYC2019-027073 Ministerio de Economía y Competitividad MDM2015-0552
Nota:	Unidad de excelencia María de Maeztu CEX2019-000940-M
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Palaeoceanography ; Marine biology
Publicat a:	Nature communications, Vol. 13 (March 2022) , art. 1348, ISSN 2041-1723

DOI: 10.1038/s41467-022-29013-0
PMID: 35292644

9 p, 2.1 MB

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