Details:

Personal Author:
Zwolinski, Juan P. ; Demer, David A. (David Arthur), 1964- ; Macewicz, Beverly J. ; Cutter, George Randall ; Elliot, B. E. (Brian Edward). ; ... More +
Zwolinski, Juan P. ; Demer, David A. (David Arthur), 1964- ; Macewicz, Beverly J. ; Cutter, George Randall ; Elliot, B. E. (Brian Edward). ; Mau, Scott A. ; Murfin, David W. ; Renfree, Josiah S. ; Sessions, Thomas S. ; Stierhoff, Kevin L. Less -
Corporate Authors:
Southwest Fisheries Science Center (U.S.)
NOAA Program & Office:
NMFS (National Marine Fisheries Service) ; SWFSC (Southwest Fisheries Science Center)
NMFS (National Marine Fisheries Service) ; SWFSC (Southwest Fisheries Science Center) Less -
Description:
"The biomass of the northern stock of sardine during spring 2015 was estimated using the acoustic-trawl method (ATM) to be 29,048 metric tons (t), CV = 29.9%. The stock comprised two modal lengths. The larger sardine are primarily the remnant of a stronger than average recruitment from 2010, and the smaller ones were likely sardine spawned in 2014. The ATM-estimated sardine biomass during summer 2015 was 15,870 t, CV = 80.2%. In addition to the dominant 2010 and 2014 year-classes observed in the spring, the stock also included recruits from 2015. In summer 2015, the biomass of the northern stock of sardine was the lowest, and the extent of the summer migration was the shortest since the ATM surveys began in 2006"--Summary [doi:10.7289/V5/TM-SWFSC-559 (http://dx.doi.org/10.7289/V5/TM-SWFSC-559)]
Content Notes:
Juan P. Zwolinski, David A. Demer, Beverly J. Macewicz, George R. Cutter, Brian Elliot, Scott Mau, David Murfin, Josiah S. Renfree, Thomas S. Sessions, Kevin Stierhoff.

"April 2016."

System requirements: Adobe Acrobat Reader.

Includes bibliographical references (pages 5-7).


Keywords:
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Estimates Fish Populations Fish Stock Assessment Fish Surveys Growth Sardinops Sagax Spawning
Series:
NOAA technical memorandum NMFS ; NOAA-TM-NMFS-SWFSC ; 559
NOAA technical memorandum NMFS ; NOAA-TM-NMFS-SWFSC ; 559 Less -
DOI:
http://doi.org/10.7289/V5/TM-SWFSC-559
Document Type:
Technical Memorandum
Place as Subject:
Pacific Ocean
Rights Information:
Public Domain
Compliance:
Library
Main Document Checksum:
[+]
urn:sha256:058516e25bd61feeb729e1f5d7c5cb45ac30454caacf05e2b7498b15149245dd
Download URL:
https://repository.library.noaa.gov/view/noaa/10482/noaa_10482_DS1.pdf
File Type:

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