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008161103s2016    oncbd   ob   f000 0 eng d
040 |aCaOODSP|beng
041 |aeng|bfre
043 |an-cn---
0861 |aFs70-5/2016-064E-PDF
1001 |aSurette, T. J.
24510|aAbundance indices of Atlantic herring (Clupea harengus) from the southern Gulf of St. Lawrence based on the September multispecies bottom trawl survey |h[electronic resource] / |cTobie J. Surette.
2461 |iTitle at head of French abstract: |aIndices de l'abondance du hareng de l’Atlantique (Clupea harengus) du sud du golfe du Saint-Laurent tirés du relevé plurispécifique au chalut de fond réalisé en septembre
260 |aOttawa : |bFisheries and Oceans Canada, |cc2016.
300 |avii, 33 p. : |bcol. maps
4901 |aCanadian Science Advisory Secretariat research document, |x1919-5044 ; |v2016/064, Gulf Region
500 |aCover title.
500 |a“Gulf Fisheries Centre.”
500 |a“October 2016.”
504 |aIncludes bibliographical references (p. 12-13).
520 |a"Fishery-independent abundance indices for the fall spawner component of Atlantic herring (Clupea harengus), one for all large fish (≥ 20 cm) and the other disaggregated by age for fall spawning fish only, are derived from the September multi-species bottom trawl survey in NAFO Div. 4T. Using a Bayesian approach, over-dispersion in the data is handled via a negative binomial error with log-linear mean and additive hierarchical priors over year, survey stratum, time of day, fish age and interaction terms. While indices remained highly variable, cohort tracking was apparent in the age- disaggregated index and inter-cohort correlations were moderate for ages 4 to 7 years. While uncertainty remains as to other types of systematic annual changes, there was little evidence of change in day-night catchability patterns of Atlantic herring over time"--Abstract, p. vi.
546 |aIncludes abstract in French.
69207|2gccst|aFisheries resources
69207|2gccst|aSalt water fish
69207|2gccst|aFishing area
69207|2gccst|aFisheries management
7101 |aCanada. |bDepartment of Fisheries and Oceans.
7101 |aCanada. |bEcosystems and Oceans Science.
7102 |aCanadian Science Advisory Secretariat.
7102 |aGulf Fisheries Centre (Canada)
830#0|aResearch document (Canadian Science Advisory Secretariat)|x1919-5044 ; |v2016/064, Gulf Region|w(CaOODSP)9.507396
85640|qPDF|s1.52 MB|uhttps://publications.gc.ca/collections/collection_2016/mpo-dfo/Fs70-5-2016-064-eng.pdf