Details:

Journal Title:
ICES Journal of Marine Science
Personal Author:
O’Leary, Cecilia A ; Thorson, James T ; Miller, Timothy J ; Nye, Janet A
O’Leary, Cecilia A ; Thorson, James T ; Miller, Timothy J ; Nye, Janet A Less -
NOAA Program & Office:
NMFS (National Marine Fisheries Service) ; NEFSC (Northeast Fisheries Science Center) ; AFSC (Alaska Fisheries Science Center) ; JISAO (Joint Institute for the Study of the Atmosphere and Ocean)
NMFS (National Marine Fisheries Service) ; NEFSC (Northeast Fisheries Science Center) ; AFSC (Alaska Fisheries Science Center) ; JISAO (Joint Institute for the Study of the Atmosphere and Ocean) Less -
Description:
Fisheries managers use biological reference points (BRPs) as targets or limits on fishing and biomass to maintain productive levels of fish stock biomass. There are multiple ways to calculate BRPs when biological parameters are time varying. Using summer flounder (Paralichthys dentatus) as a case study, we investigated time-varying approaches in concert with climate-linked population models to understand the impact of environmentally driven variability in natural mortality, recruitment, and size-at-age on two commonly used BRPs [B0(t) and F35%(⁠t⁠)]. We used the following two approaches to calculate time-varying BRPs: dynamic-BRP and moving-average-BRP. We quantified the variability and uncertainty of different climate dependencies and estimation approaches, attributed BRP variation to variation in life-history processes, and evaluated how using different approaches impacts estimates of stock status. Results indicate that the dynamic-BRP approach using the climate-linked natural mortality model produced the least variable reference points compared to others calculated. Summer flounder stock status depended on the estimation approach and climate model used. These results emphasize that understanding climate dependencies is important for summer flounder reference points and perhaps other species, and careful consideration is warranted when considering what time-varying approach to use, ideally based upon simulation studies within a proposed set of management procedures.
Keywords:
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Biological Reference Points Biomass Climate Change Fisheries Management Stock Assessment
Source:
ICES Journal of Marine Science, 77(3):930-941
DOI:
https://doi.org/10.1093/icesjms/fsz215
Document Type:
Journal Article
Rights Information:
Accepted Manuscript
Compliance:
Submitted
Main Document Checksum:
[+]
urn:sha256:f1259f958968190d5f447344911db6cf4554eb46a75f33f4c67fadff1848adc3
Download URL:
https://repository.library.noaa.gov/view/noaa/30682/noaa_30682_DS1.pdf
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