Abundance indices of Atlantic herring (Clupea harengus) from the southern Gulf of St. Lawrence based on the September multispecies bottom trawl survey / Tobie J. Surette.: Fs70-5/2016-064E-PDF

"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.

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Publication information
Department/Agency Canada. Department of Fisheries and Oceans.
Canada. Ecosystems and Oceans Science.
Canadian Science Advisory Secretariat.
Gulf Fisheries Centre (Canada)
Title Abundance indices of Atlantic herring (Clupea harengus) from the southern Gulf of St. Lawrence based on the September multispecies bottom trawl survey / Tobie J. Surette.
Variant title Title at head of French abstract: Indices 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
Series title Canadian Science Advisory Secretariat research document, 1919-5044 ; 2016/064, Gulf Region
Publication type Series - View Master Record
Language [English]
Format Electronic
Electronic document
Note(s) Cover title.
“Gulf Fisheries Centre.”
“October 2016.”
Includes bibliographical references (p. 12-13).
Includes abstract in French.
Publishing information Ottawa : Fisheries and Oceans Canada, c2016.
Author / Contributor Surette, T. J.
Description vii, 33 p. : col. maps
Catalogue number
  • Fs70-5/2016-064E-PDF
Subject terms Fisheries resources
Salt water fish
Fishing area
Fisheries management
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