Spatially-varying effects of the California Undercurrent on Pacific hake distribution

Malick, Michael J.; Hunsicker, Mary; Haltuch, Melissa A.; Parker-Stetter, Sandy L.; Marshall, Kristin N.; Pohl, John; Berger, Aaron M; Siedlecki, Samantha; Gauthier, Stéphane; Hermann, Al

doi:10.1139/cjfas-2023-0202

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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.

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Spatially-varying effects of the California Undercurrent on Pacific hake distribution

2023
By Malick, Michael J. ; Hunsicker, Mary ; Haltuch, Melissa A. ; ...
Source: Canadian Journal of Fisheries and Aquatic Sciences (2023)

[PDF-1.43 MB]

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Journal Title:

Canadian Journal of Fisheries and Aquatic Sciences
Personal Author:

Malick, Michael J. ; Hunsicker, Mary ; Haltuch, Melissa A. ; Parker-Stetter, Sandy L. ; Marshall, Kristin N. ; ... More +

Malick, Michael J. ; Hunsicker, Mary ; Haltuch, Melissa A. ; Parker-Stetter, Sandy L. ; Marshall, Kristin N. ; Pohl, John ; Berger, Aaron M ; Siedlecki, Samantha ; Gauthier, Stéphane ; Hermann, Al Less -
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; OAR (Oceanic and Atmospheric Research) ; AFSC (Alaska Fisheries Science Center) ; NWFSC (Northwest Fisheries Science Center) ; PMEL (Pacific Marine Environmental Laboratory)

NMFS (National Marine Fisheries Service) ; OAR (Oceanic and Atmospheric Research) ; AFSC (Alaska Fisheries Science Center) ; NWFSC (Northwest Fisheries Science Center) ; PMEL (Pacific Marine Environmental Laboratory) Less -
Description:

In the California Current Ecosystem, the California Undercurrent (CU) is the predominate subsurface current that transports nutrient rich water from southern California poleward. In this study, we used a large data set of spatially explicit in situ observations of Pacific hake and the CU (36.5–48.3°N) to estimate relationships between northward undercurrent velocity and hake distribution and determine if these relationships vary across space or life-history stage. We found that both hake occurrence and density had strong spatially complex relationships with the CU. In areas north of 44°N (central Oregon), the CU effect was spatially consistent and opposite for occurrence (negative) and density (positive), indicating that hake may aggregate in areas of high northward velocity in this region. In areas south of 44°N, the CU effect showed a cross-shelf gradient for both occurrence and density, indicating a more nearshore hake distribution when northward velocity is higher in this region. Together, our results suggest that future changes in the CU due to climate change are likely to impact hake differently in northern and southern areas.
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Aquatic Science Ecology, Evolution, Behavior And Systematics
Source:

Canadian Journal of Fisheries and Aquatic Sciences (2023)
DOI:

https://doi.org/10.1139/cjfas-2023-0202
ISSN:

0706-652X;1205-7533;
Publisher:

Canadian Science Publishing
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Journal Article
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urn:sha256:615d91d8ed7e076c1a446a96167047037cd0103840117a64ed629e4d8b9a91c3
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https://repository.library.noaa.gov/view/noaa/60183/noaa_60183_DS1.pdf
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Spatially-varying effects of the California Undercurrent on Pacific hake distribution

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