Habitat compression and ecosystem shifts as potential links between marine heatwave and record whale entanglements.

Autor:	Santora JA; Department of Applied Mathematics, University of California, 1156 High Street, Santa Cruz, California, 95064, USA. jsantora@ucsc.edu.; Fisheries Ecology Division, Southwest Fisheries Science Center, National Marine Fisheries Service, NOAA, 110 McAllister Way, Santa Cruz, California, 95060, USA. jsantora@ucsc.edu., Mantua NJ; Fisheries Ecology Division, Southwest Fisheries Science Center, National Marine Fisheries Service, NOAA, 110 McAllister Way, Santa Cruz, California, 95060, USA., Schroeder ID; Environmental Research Division, Southwest Fisheries Science Center, National Marine Fisheries Service, NOAA, 99 Pacific Street, Monterey, California, 93940, USA., Field JC; Fisheries Ecology Division, Southwest Fisheries Science Center, National Marine Fisheries Service, NOAA, 110 McAllister Way, Santa Cruz, California, 95060, USA., Hazen EL; Environmental Research Division, Southwest Fisheries Science Center, National Marine Fisheries Service, NOAA, 99 Pacific Street, Monterey, California, 93940, USA., Bograd SJ; Environmental Research Division, Southwest Fisheries Science Center, National Marine Fisheries Service, NOAA, 99 Pacific Street, Monterey, California, 93940, USA., Sydeman WJ; Farallon Institute, 101 H Street, Suite Q, Petaluma, California, 94952, USA., Wells BK; Fisheries Ecology Division, Southwest Fisheries Science Center, National Marine Fisheries Service, NOAA, 110 McAllister Way, Santa Cruz, California, 95060, USA., Calambokidis J; Cascadia Research Collective, 218½ W 4th Avenue, Olympia, Washington, 98501, USA., Saez L; Protected Resources Division, Southwest Regional Office, National Marine Fisheries Service, NOAA, 501 West Ocean Boulevard, Long Beach, California, 90802, USA., Lawson D; Protected Resources Division, Southwest Regional Office, National Marine Fisheries Service, NOAA, 501 West Ocean Boulevard, Long Beach, California, 90802, USA., Forney KA; Southwest Fisheries Science Center, National Marine Fisheries Service, NOAA, Moss Landing, California, USA.; Moss Landing Marine Laboratories, Moss Landing, California, USA.
Jazyk:	angličtina
Zdroj:	Nature communications [Nat Commun] 2020 Jan 27; Vol. 11 (1), pp. 536. Date of Electronic Publication: 2020 Jan 27.
DOI:	10.1038/s41467-019-14215-w
Abstrakt:	Climate change and increased variability and intensity of climate events, in combination with recovering protected species populations and highly capitalized fisheries, are posing new challenges for fisheries management. We examine socio-ecological features of the unprecedented 2014-2016 northeast Pacific marine heatwave to understand the potential causes for record numbers of whale entanglements in the central California Current crab fishery. We observed habitat compression of coastal upwelling, changes in availability of forage species (krill and anchovy), and shoreward distribution shift of foraging whales. We propose that these ecosystem changes, combined with recovering whale populations, contributed to the exacerbation of entanglements throughout the marine heatwave. In 2016, domoic acid contamination prompted an unprecedented delay in the opening of California's Dungeness crab fishery that inadvertently intensified the spatial overlap between whales and crab fishery gear. We present a retroactive assessment of entanglements to demonstrate that cooperation of fishers, resource managers, and scientists could mitigate future entanglement risk by developing climate-ready fisheries approaches, while supporting thriving fishing communities.
Databáze:	MEDLINE
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