Large-mesh Drift Gillnet Fishery Effort, 2013-2019

Apr 7, 2022 (Last modified Oct 14, 2022)
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Description:
This dataset contains a Large-mesh Drift Gillnet Fishery Effort layer that displays the extent and magnitude of the large-mesh drift gillnet (DGN) fishery fishing effort, and a layer that describes estimated observer coverage for the six fishing years combined (September 2013 to January 2019). The large-mesh drift gillnet fishery mainly targets swordfish, but other highly desirable, marketable catch include opah, Pacific bluefin tuna, shortfin mako shark, and common thresher shark. Marketable, non-target species that are occasionally caught in much lower quantities include yellowfin tuna and albacore, along with louvar and escolar.

These data were developed as part of a data-intensive study to compare unobserved and observed fishing trips in the fishery. Effort was determined through the integration of observer, logbook, and landings data with vessel monitoring system (VMS) data along with GIS-derived data and machine learning classification models.

California limited entry permits for large-mesh drift gillnet are being phased out, but federal limited entry permits currently remain in place. Other swordfish gear types under development are likely to target similar areas for fishing in the future.
Data Provided By:
Pacific States Marine Fisheries Commission
Content date:
2013-09-01T00:00:00 - 2019-01-31T00:00:00
Citation:
Observing unobserved fishing characteristics in the drift gillnet fishery for swordfish. (The manuscript was submitted to Fisheries Research in December 2021. A draft of the submitted manuscript is available, upon request.)
Contact Organization:
Pacific States Marine Fisheries Commission
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Use Constraints:
This product is for informational purposes only and is not intended for navigational, legal, engineering, or surveying purposes; it is provided with the understanding that conclusions drawn from the information are the responsibility of the user.
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Tags:
fisheries observer, fisheries management, fisheries, highly migratory species, california, drift gillnet fishery, pacific ocean, fishery effort
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