globalchange  > 过去全球变化的重建
DOI: 10.1111/fog.12418
WOS ID: WOS:000471812800002
Title:
Environmental associations of Pacific bluefin tuna (Thunnus orientalis) catch in the California Current system
Author: Runcie, Rosa M.1; Muhling, Barbara2,3; Hazen, Elliott L.4; Bograd, Steven J.4; Garfield, Toby3; DiNardo, Gerard3
Corresponding Author: Runcie, Rosa M.
Source Publication: FISHERIES OCEANOGRAPHY
ISSN: 1054-6006
EISSN: 1365-2419
Publishing Year: 2019
Volume: 28, Issue:4, Pages:372-388
Language: 英语
Keyword: California Current ; commercial fisheries ; dynamic habitat models ; eastern Pacific Ocean ; Large Marine Ecosystem ; Pacific bluefin tuna ; recreational fisheries
WOS Keyword: SOUTHERN CALIFORNIA ; CLIMATE-CHANGE ; DYNAMIC OCEAN ; TEMPERATURE ; IMPACTS ; RATES ; SEA ; VARIABILITY ; PREDICTION ; MANAGEMENT
WOS Category: Fisheries ; Oceanography
WOS Research Area: Fisheries ; Oceanography
English Abstract:

We investigate the impact of oceanographic variability on Pacific bluefin tuna (Thunnus orientalis: PBF) distributions in the California Current system using remotely sensed environmental data, and fishery-dependent data from multiple fisheries in a habitat-modeling framework. We examined the effects of local oceanic conditions (sea surface temperature, surface chlorophyll, sea surface height, eddy kinetic energy), as well as large-scale oceanographic phenomena, such as El Nino, on PBF availability to commercial and recreational fishing fleets. Results from generalized additive models showed that warmer temperatures of around 17-21 degrees C with low surface chlorophyll concentrations (<0.5 mg/m(3)) increased probability of occurrence of PBF in the Commercial Passenger Fishing Vessel and purse seine fisheries. These associations were particularly evident during a recent marine heatwave (the "Blob"). In contrast, PBF were most likely to be encountered on drift gillnet gear in somewhat cooler waters (13-18 degrees C), with moderate chlorophyll concentrations (0.5-1.0 mg/m(3)). This discrepancy was likely a result of differing spatiotemporal distribution of fishing effort among fleets, as well as the different vertical depths fished by each gear, demonstrating the importance of understanding selectivity when building correlative habitat models. In the future, monitoring and understanding environmentally driven changes in the availability of PBF to commercial and recreational fisheries can contribute to the implementation of ecosystem approaches to fishery management.


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Document Type: 期刊论文
Identifier: http://119.78.100.158/handle/2HF3EXSE/140805
Appears in Collections:过去全球变化的重建

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Affiliation: 1.NOAA, Ocean Associates Inc, Southwest Fisheries Sci Ctr, Natl Marine Fisheries Serv, La Jolla, CA 92037 USA
2.Univ Calif Santa Cruz, Cooperat Inst Marine Ecosyst & Climate, Santa Cruz, CA 95064 USA
3.NOAA, Southwest Fisheries Sci Ctr, Natl Marine Fisheries Serv, La Jolla, CA USA
4.NOAA, Southwest Fisheries Sci Ctr, Natl Marine Fisheries Serv, Monterey, CA USA

Recommended Citation:
Runcie, Rosa M.,Muhling, Barbara,Hazen, Elliott L.,et al. Environmental associations of Pacific bluefin tuna (Thunnus orientalis) catch in the California Current system[J]. FISHERIES OCEANOGRAPHY,2019-01-01,28(4):372-388
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