Quantification of “observer effect” in the United States Atlantic pelagic longline fishery
by TJ Morrell, K Dettloff, ES Orbesen, JF Walter III, DW Kerstetter

Fishers in the US pelagic longline fishery self-report catch data, supplemented by observer data. Statistical models revealed under-reporting in logbooks for less-valued and bycatch species. While target species reporting was consistent, discrepancies highlight lower accuracy in self-reported data, requiring further analysis of management impacts on accuracy. (“fish2730” by NOAA Photo Library)

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