The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners.
As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.
i
2023 Discard Estimation, Precision, and Sample Size Analyses for 14 Federally Managed Species Groups in the Waters off the Northeastern United States
-
2023
-
[PDF-17.74 MB]
Details:
-
Personal Author:
-
Corporate Authors:
-
NOAA Program & Office:
-
Description:This report describes the analyses associated with the discard estimation of 14 federally managed fish and invertebrate species groups from July 2021 through June 2022 and the expected at-sea observer coverage for northeastern United States fisheries from April 2023 through March 2024 by using the Standardized Bycatch Reporting Methodology. An estimated 55,824 mt (123,070,619 lb) of federally regulated species were discarded from nonconfidential fleets from July 2021 and June 2022. The top species groups discarded were skates (Rajidae) and sea scallop (Placopecten magellanicus). Across all species groups examined, “no market” was the reason reported for the majority of discards. Analyses also revealed that for fleets with observer coverage, the coverage within a fleet corresponded with the spatial and temporal patterns of fishing activity in terms of kept weight of all species. The discards reported in this document may not necessarily correspond directly with the discard estimates derived for individual stock assessments because of differences in stratification and data. Hence, the discard estimates are not definitive, but they are indicative of where discarding occurred among commercial fleets and for which species groups. An estimated 7,238 sea days are needed to achieve a precision-based performance standard (30% coefficient of variation of the discard estimate) for the 14 fish and invertebrate species groups across 64 fleets. The sea day analyses used a standardized protocol to account for the importance of the discarded species relative to the amount of discards by each fleet and total fishing mortality.
-
Keywords:
-
Series:
-
DOI:
-
Format:
-
Document Type:
-
Place as Subject:
-
License:
-
Rights Information:CC0 Public Domain
-
Compliance:Submitted
-
Main Document Checksum:
-
Download URL:
-
File Type:
