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
Transboundary Resources Assessment Committee Status Report 2018/02 : Eastern Georges Bank Haddock
-
2018
[PDF-295.67 KB]
Details:
-
Alternative Title:TRAC. 2018. Eastern Georges Bank Haddock. TRAC Status Report 2018/02
-
Corporate Authors:
-
NOAA Program & Office:
-
Description:Combined Canada/United States of America (USA) catches were 13,679 mt in 2017 (27% of the quota). In the most recent surveys, total biomass indices have decreased from record highs in the 2016 Fisheries and Oceans Canada (DFO) survey and 2015 National Marine Fisheries Service (NMFS) fall survey. In the most recent NMFS fall (2017), DFO (2018), andNMFS spring (2018) surveys, biomass indices decreased by 65%, 6%, and 49% respectively. The average survey adult biomass (as of January 2018) is 74% lower than the biomass predicted by the virtual population analysis (VPA) model with no rho adjustment and is 49% lower than the predicted biomass with rho adjustment. The measured weights-at-age (WAA) from the DFO survey continue to exhibit a declining trend since 2000, especially for ages 4 to 8. The beginning of year weights-at-age (WAA) used in projecting the 2018 biomass were overestimated for fish aged 5 (2013 year class) and 8 (2010 year class). Considering the 2013 and 2010 year classes are expected to contribute 75% and 10% of the total 2018 population biomass, the overestimation of WAA for these year classes would produce an overestimate of the projected population biomass. The 2018 Transboundary Resource Advisory Committee (TRAC) scientific advice was that the upper bound of 40,000 mt suggested at the Transboundary Management Guidance Committee for 2019 catch advice is too high, especially in light of the 68,017 mt estimate of average survey 3+ biomass in 2018. The science advice from TRAC was that the rho- adjusted 2019 catch for low and neutral risk, which yields a range of 23,000 mt to 27,500 mt, is a more appropriate range for catch in 2019.
-
Keywords:
-
Document Type:
-
Place as Subject:
-
Rights Information:Public Domain
-
Compliance:Submitted
-
Main Document Checksum:
-
Download URL:
-
File Type:
Related Documents
-
Barrett, M. ;Legault, Christopher M....
[PDF - 2.11 MB]
No Description[PDF - 1.55 MB]
