Collapse and recovery of forage fish populations prior to commercial exploitation

McClatchie, S.; Hendy, I. L.; Thompson, A. R.; Watson, W.

doi:10.1002/2016gl071751

i

Collapse and recovery of forage fish populations prior to commercial exploitation

Supporting Files

2017
By McClatchie, S. ; Hendy, I. L. ; Thompson, A. R. ; ...

Details

Journal Title:

Geophysical Research Letters
Personal Author:

McClatchie, S. ; Hendy, I. L. ; Thompson, A. R. ; Watson, W.
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; SWFSC (Southwest Fisheries Science Center)
Description:

We use a new,well-calibrated 500 year paleorecordoﬀ southern California todetermine collapsefrequency,crosscorrelation,persistence,andreturntimesofexploitedforageﬁshpopulations.Thepaleorecordshowsthat“collapse”(deﬁnedas <10%ofthemeanpeakbiomass)isanormalstaterepeatedly experiencedbynorthernanchovy,Paciﬁchake,andPaciﬁcsardinewhichwerecollapsed29–40%ofthe time,priortocommercialﬁshingexploitation.Mean( ±SD)persistenceof“ﬁshablebiomass”(deﬁnedasone thirdmeanpeakbiomassfromthepaleorecord)was 19±18,15±17,and12±7yearsforanchovy,hake,and sardine.Meanreturntimestothesamebiomasswas8yearsforanchovybut22yearsforsardineandhake.
Keywords:

General Earth And Planetary Sciences Geophysics General Earth And Planetary Sciences General Earth And Planetary Sciences
Source:

Geophysical Research Letters, 44(4), 1877-1885
DOI:

https://doi.org/10.1002/2016gl071751
ISSN:

0094-8276 ; 1944-8007
Format:

PDF
Publisher:

American Geophysical Union (AGU)
Document Type:

Journal Article
License:

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

CC0 Public Domain
Rights Statement:

This article is a U.S. Government work and is in the public domain in the USA.
Compliance:

Library
Main Document Checksum:

urn:sha256:a0a9edc94a0d69ff42e5b7ccd3cf340a37ace23f67049c547aa79ad0c2d23d58
Download URL:

https://repository.library.noaa.gov/view/noaa/54030/noaa_54030_DS1.pdf
File Type:

[PDF - 567.12 KB ]

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