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Life-history variability and conservation status of landlocked Atlantic salmon: an overview
Dalhousie University, Canada; Flødevigen Marine Research Station, Norway; University of Agder, Norway.
Western New England Complex, USA.
Norwegian Research Centre, Norway.
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences (from 2013). (NRRV - Naturresurs Rinnande Vatten)ORCID iD: 0000-0003-2220-1615
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2019 (English)In: Canadian Journal of Fisheries and Aquatic Sciences, ISSN 0706-652X, E-ISSN 1205-7533, Vol. 76, no 10, p. 1697-1708Article in journal (Refereed) Published
Abstract [en]

Nonanadromous Atlantic salmon (Salmo salar) exhibit a combination of variation in life history, habitat, and species co-existence matched by few vertebrates. Distributed in eastern North America and northern Europe, habitat ranges from hundreds of metres of river to Europe’s largest lakes. As juveniles, those with access to a lake usually migrate to feed and grow prior to reproduction. Prey such as smelt (Osmerus mordax, Osmerus eperlanus) and vendace (Coregonus albula) facilitate large body size (50–85 cm at maturity) and persistence in high-diversity (>20 fish species) environments; small-bodied salmon (10–30 cm at maturity), relying on insects as prey, coexist with few (fewer than five) other fishes. At maturity, weight varies more than 400-fold (17 to 7200 g) among populations, fecundity more than 150-fold (33 to 5600), and longevity almost fivefold (3 to 14 years). Landlocked salmon are managed to support sustainable fishing, achieve conservation and restoration targets, and mitigate threats; successes are evident but multiple challenges persist. Extraordinary variability in life history coupled with extensive breadth of habitat and species co-existence render landlocked Atlantic salmon singularly impressive from a biodiversity perspective.

Place, publisher, year, edition, pages
Canadian Science Publishing , 2019. Vol. 76, no 10, p. 1697-1708
National Category
Ecology
Research subject
Biology
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URN: urn:nbn:se:kau:diva-74675DOI: 10.1139/cjfas-2018-0413ISI: 000487999200002OAI: oai:DiVA.org:kau-74675DiVA, id: diva2:1349167
Available from: 2019-09-06 Created: 2019-09-06 Last updated: 2019-11-12Bibliographically approved

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Bergman, EvaGreenberg, Larry

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