Atwood, Trisha B., Romanou, Anastasia, DeVries, Tim, Lerner, Paul E., Mayorga, Juan S., Bradley, Darcy, Cabral, Reniel B., Schmidt, Gavin A., and Sala, Enric (2024) Atmospheric CO2 emissions and ocean acidification from bottom-trawling. Frontiers in Marine Science, 10. 1125137.

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Abstract

Trawling the seafloor can disturb carbon that took millennia to accumulate, but the fate of that carbon and its impact on climate and ecosystems remains unknown. Using satellite-inferred fishing events and carbon cycle models, we find that 55-60% of trawling-induced aqueous CO2 is released to the atmosphere over 7-9 years. Using recent estimates of bottom trawling’s impact on sedimentary carbon, we found that between 1996-2020 trawling could have released, at the global scale, up to 0.34-0.37 Pg CO2 yr-1 to the atmosphere, and locally altered water pH in some semi-enclosed and heavy trawled seas. Our results suggest that the management of bottom-trawling efforts could be an important climate solution.

Item ID:	81700
Item Type:	Article (Research - C1)
ISSN:	2296-7745
Copyright Information:	© 2024 Atwood, Romanou, DeVries, Lerner, Mayorga, Bradley, Cabral, Schmidt and Sala. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
Date Deposited:	01 Mar 2024 03:17
FoR Codes:	30 AGRICULTURAL, VETERINARY AND FOOD SCIENCES > 3005 Fisheries sciences > 300505 Fisheries management @ 50% 37 EARTH SCIENCES > 3702 Climate change science > 370299 Climate change science not elsewhere classified @ 50%
SEO Codes:	10 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 1003 Fisheries - wild caught > 100399 Fisheries - wild caught not elsewhere classified @ 50% 19 ENVIRONMENTAL POLICY, CLIMATE CHANGE AND NATURAL HAZARDS > 1903 Mitigation of climate change > 190301 Climate change mitigation strategies @ 50%
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