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- Title
Electronic Monitoring Performance in a Developing Deep-Set Fishery for Swordfish, Xiphius gladius, off California.
- Authors
WANG, MIKE; AALBERS, SCOTT; dE GUZMAN, REESE; VILLAFANA, CHARLES; KAUER, KATE; BELLQUIST, LYALL; SEPULVEDA, CHUGEY
- Abstract
Electronic monitoring (EM) systems have been developed to facilitate fisheries data collection in many industrialized fleets but remain less common onboard smaller vessels. This work tested the performance of small-vessel EM systems to meet the reporting objectives in the California deep-set buoy gear (DSBG) fishery for swordfish, Xiphias gladius. Two EM service providers were contracted to develop monitoring platforms, which included both 1- and 2-camera systems. Initial testing was performed onboard a research vessel to identify functional configurations and refine data collection procedures prior to commercial testing. Commercial trials were performed onboard four vessels during the 2020--21 fishing seasons, resulting in 126 electronically monitored set days. Fishery performance metrics from EM records were compared between service providers, fishing logbooks, and records from NOAA-certified observers. Catch comparisons yielded full agreement (100%) for both target (109/109) and incidental catch (9/9) between the 2-camera EM system and logbook records. The 1-camera system yielded 88% agreement (52/59) for target catch and 14% (1/7) for incidental catch. Unquantified catch events occurred outside the 1-camera field of view onboard larger vessels with independent hauling and catch-processing areas. Collectively, this study demonstrates that EM can be used to accurately document fishery catch statistics in the developing commercial DSBG fishery.
- Subjects
UNITED States. National Oceanic &; Atmospheric Administration; ELECTRONIC surveillance; SWORDFISH; BYCATCHES; RESEARCH vessels; FISHERIES
- Publication
Marine Fisheries Review, 2023, Vol 85, Issue 1-4, p111
- ISSN
0090-1830
- Publication type
Article
- DOI
10.7755/MFR.85.1-4.6