000 02137cam  2200337zi 4500
006m     o  d f      
007cr |n|||||||||
008190924s1979    nfcd   #ob   f000 0 eng d
040 |aCaOODSP|beng|erda|cCaOODSP
043 |an-cn---
0861 |aFs70-8/79-28E-PDF
1001 |aWinters, G. H., |eauthor.
24513|aAn evaluation of recent changes in the population dynamics of Southern Gulf herring / |cby G.H. Winters and J.A. Moores.
264 1|aSt. John's, Nfld. : |bResearch and Resource Services Branch, Department of Fisheries and Oceans, Newfoundland Environment Center, |c[1979]
300 |a1 online resource (34 pages) : |bcharts.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aCAFSAC research document ; |v79/28
500 |a"Not to be cited without permission of authors."
504 |aIncludes bibliographical references (page 8).
520 |a"Landings from this stock complex decreased from peak levels of 300,000 m tons in 1970 to a low of 37,200 m tons in 1974. Research studies (Winters and Hodder 1975) have revealed that the precipitous decline in abundance during the 1970's was due to a combination of moderate growth overfishing and successively poor recruitment to both spawning components (spring and fall) following two very large but apparently anomalous year-classes produced in the late 1950's. More recent studies (Winters et al. 1977, Winters 1978) have indicated divergent recruitment patterns in the two spawning components during the last decade, resulting in a shift in predominance towards spring-spawners"--Introduction.
653 0|aHerring
7001 |aMoores, J. A. |q(John A.), |d1951- |eauthor.
7101 |aCanada. |bDepartment of Fisheries and Oceans.
830#0|aCAFSAC research document (Canadian Atlantic Fisheries Scientific Advisory Committee)|v79/28|w(CaOODSP)9.869616
85640|qPDF|s1.38 MB|uhttps://publications.gc.ca/collections/collection_2019/mpo-dfo/Fs70-8-79-28-eng.pdf