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0861 |aFs70-5/2025-070E-PDF
1001 |aVan De Walle, Joanie, |eauthor.
24510|aAbundance estimate of northwest Atlantic harp seals, Pagophilus groenlandicus, and harvest advice for 2025-2029 / |cJoanie Van de Walle, M. Tim. Tinker, Shelley L.C. Lang, G.B. Stenson, and Mike O. Hammill.
264 1|aOttawa ON : |bCanadian Science Advisory Secretariat (CSAS), |cNovember 2025.
264 4|c©2025
300 |a1 online resource (v, 56 pages) : |billustrations (chiefly colour), colour map.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aResearch document, |x1919-5044 ; |v2025/070
500 |aIssued also in French under title: Estimation d'abondance pour le phoque du Groenland de l'Atlantique Nord-Ouest (Pagophilus groenlandicus) et avis sur la récolte pour 2025-2029.
504 |aIncludes bibliographical references.
5203 |a"The Northwest Atlantic (NWA) harp seal population is harvested for commercial and subsistence purposes in Canada and Greenland, and is caught incidentally in commercial fisheries. A new pup production survey in 2022 estimated total pup production at 614,100, the lowest estimate since 1994. Stock status is estimated using a Bayesian Integrated Population Model (IPM) which incorporates periodic estimates of pup production along with updated data on age composition, age-specific reproductive rates, total removals, and environmental conditions. Based on the IPM, NWA harp seal abundance increased rapidly from the 1970s through the 1990s, peaking at an estimated abundance of 7.5 million seals (95% Credible Interval, CrI: 6.75-8.42) in 1998. The population declined from 1998-2024 with the exception of a period of relative stability between 2009-2019. The estimated 2024 total abundance was 4.4 million seals (95% CrI: 3.65-5.35). This represents a decline in abundance from 2019 (5.6 million, 95% CrI: 4.78-6.63) at a rate of 4.7% (95% CrI: 2.14-7.45%) per year. …"--Abstract, page v.
650 0|aHarp seal|zNorth Atlantic Ocean.
650 0|aSeal populations|xEstimates|zNorth Atlantic Ocean.
650 0|aSealing|zNorth Atlantic Ocean|xManagement.
7102 |aCanadian Science Advisory Secretariat, |eissuing body.
7101 |aCanada. |bDepartment of Fisheries and Oceans. |bNational Capital Region, |eissuing body.
77508|tEstimation d'abondance pour le phoque du Groenland de l'Atlantique Nord-Ouest (Pagophilus groenlandicus) et avis sur la récolte pour 2025-2029 / |w(CaOODSP)9.956360
830#0|aResearch document (Canadian Science Advisory Secretariat)|v2025/070.|w(CaOODSP)9.507396
85640|qPDF|s4.59 MB|uhttps://publications.gc.ca/collections/collection_2025/mpo-dfo/fs70-5/Fs70-5-2025-070-eng.pdf