Distribution, biomass, and demographics of coastal pelagic fishes in the California current ecosystem during summer 2024 based on acoustic-trawl sampling

Stierhoff, Kevin L.; Renfree, Josiah S.; Zwolinski, Juan P.

doi:10.25923/v99f-me72

i

Distribution, biomass, and demographics of coastal pelagic fishes in the California current ecosystem during summer 2024 based on acoustic-trawl sampling

2025
By Stierhoff, Kevin L. ; Renfree, Josiah S. ; Zwolinski, Juan P.
Series: NOAA technical memorandum NMFS-SWFSC 721

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Personal Author:

Stierhoff, Kevin L. ; Renfree, Josiah S. ; Zwolinski, Juan P.
Corporate Authors:

Southwest Fisheries Science Center (U.S.) ; Cooperative Institute for Marine, Earth and Atmospheric Systems.
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; SWFSC (Southwest Fisheries Science Center) ; CIMEAS (Cooperative Institute for Marine, Earth, and Atmospheric Systems)
Description:

This report provides: 1) a detailed description of the acoustic-trawl method (ATM) used by NOAA’s Southwest Fisheries Science Center for direct assessments of the dominant coastal pelagic species (CPS; i.e.: Pacifc Sardine Sardinops sagax, Northern Anchovy Engraulis mordax, Pacifc Mackerel Scomber japonicus, Jack Mackerel Trachurus symmetricus, Pacifc Herring Clupea pallasii, and Round Herring Etrumeus acuminatus) in the California Current Ecosystem of the west coast of the United States (U.S.) and portions of Canada and Baja CA, Mexico; 2) a description of the new multi-function trawl (MFT) system and sea trials conducted during fve days at sea (DAS) at the beginning of the survey; and 3) estimates of the biomasses, distributions, and demographics of those CPS encountered in the survey area between 30 June and 30 September 2024.
Keywords:

Biomass Coastal Pelagic Species Multi-function Trawl System Southwest Fisheries Science Center
Series:

NOAA technical memorandum NMFS-SWFSC 721
DOI:

https://doi.org/10.25923/v99f-me72
Format:

pdf
Document Type:

Technical Memorandum
Place as Subject:

Pacific Coast (U.S.)
License:

https://creativecommons.org/publicdomain/zero/1.0/
Rights Information:

CC0 Public Domain
Compliance:

Submitted
Main Document Checksum:

urn:sha-512:0a1815895776641f6a5bbcd66e057e2c09e777141e88338f079dfb86f627c9fb95ec7cf7c48ef7cd9fe0da4a195fd034f2c83c3cbb81af804d9076acd976ea5e
Download URL:

https://repository.library.noaa.gov/view/noaa/69895/noaa_69895_DS1.pdf
File Type:

[PDF - 32.28 MB ]

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