Potential impacts of climate change on agriculture and fisheries production in 72 tropical coastal communities Article - Décembre 2022

Joshua Cinner, Iain Caldwell, Lauric Thiault, John Ben, Julia Blanchard, Marta Coll, Amy Diedrich, Tyler Eddy, Jason Everett, Christian Folberth, Didier Gascuel, Jerome Guiet, Georgina Gurney, Ryan Heneghan, Jonas Jägermeyr, Narriman Jiddawi, Rachael Lahari, John Kuange, Wenfeng Liu, Olivier Maury, Christoph Müller, Camilla Novaglio, Juliano Palacios-Abrantes, Colleen Petrik, Ando Rabearisoa, Derek Tittensor, Andrew Wamukota, Richard Pollnac

Joshua Cinner, Iain Caldwell, Lauric Thiault, John Ben, Julia Blanchard, Marta Coll, Amy Diedrich, Tyler Eddy, Jason Everett, Christian Folberth, Didier Gascuel, Jerome Guiet, Georgina Gurney, Ryan Heneghan, Jonas Jägermeyr, Narriman Jiddawi, Rachael Lahari, John Kuange, Wenfeng Liu, Olivier Maury, Christoph Müller, Camilla Novaglio, Juliano Palacios-Abrantes, Colleen Petrik, Ando Rabearisoa, Derek Tittensor, Andrew Wamukota, Richard Pollnac, « Potential impacts of climate change on agriculture and fisheries production in 72 tropical coastal communities  », Nature Communications, décembre 2022, p. 3530. ISSN 2041-1723

Abstract

Climate change is expected to profoundly affect key food production sectors, including fisheries and agriculture. However, the potential impacts of climate change on these sectors are rarely considered jointly, especially below national scales, which can mask substantial variability in how communities will be affected. Here, we combine socioeconomic surveys of 3,008 households and intersectoral multi-model simulation outputs to conduct a sub-national analysis of the potential impacts of climate change on fisheries and agriculture in 72 coastal communities across five Indo-Pacific countries (Indonesia, Madagascar, Papua New Guinea, Philippines, and Tanzania). Our study reveals three key findings : First, overall potential losses to fisheries are higher than potential losses to agriculture. Second, while most locations (> 2/3) will experience potential losses to both fisheries and agriculture simultaneously, climate change mitigation could reduce the proportion of places facing that double burden. Third, potential impacts are more likely in communities with lower socioeconomic status.

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