Recovery potential modelling of Westslope cutthroat trout (Oncorhynchus clarkii lewisi) in designatable unit 1 : Saskatchewan-Nelson River populations / Adam S. van der Lee and Marten A. Koops. : Fs70-5/2020-046E-PDF
"The Committee on the Status of Endangered Wildlife in Canada (COSEWIC) assessed the Westslope Cutthroat Trout (WCT, Oncorhynchus clarkii lewisi) as Threatened for Saskatchewan-Nelson River populations (DU 1) in Canada. Here population modelling is presented to assess the impacts of harm, determine abundance and habitat recovery targets, and conduct long-term projections of population recovery in support of a recovery potential assessment (RPA). The analysis demonstrated that WCT populations were most sensitive to perturbations to the juvenile stage (e.g. survival, growth, and habitat) under most circumstances. Harm to these aspects of WCT life-history should be avoided. Population viability analysis was used to identify potential recovery targets. Demographic sustainability, (i.e. a self-sustaining population over the long term) can be achieved with population sizes of 1,600 to 4,200 adults (> 138 mm). A population of this size would require between 21 and 37 km of stream habitat. Population projections predicted that recovery could occur in 27-33 years with an initial density of 10% of the abundance targets"--Abstract, page v.
Lien permanent pour cette publication :
publications.gc.ca/pub?id=9.891315&sl=1
| Ministère/Organisme | Canadian Science Advisory Secretariat, issuing body. Canada. Department of Fisheries and Oceans. Central and Arctic Region, issuing body. |
|---|---|
| Titre | Recovery potential modelling of Westslope cutthroat trout (Oncorhynchus clarkii lewisi) in designatable unit 1 : Saskatchewan-Nelson River populations / Adam S. van der Lee and Marten A. Koops. |
| Titre de la série | Research document, 1919-5044 ; 2020/046 |
| Type de publication | Série - Voir l'enregistrement principal |
| Langue | [Anglais] |
| Autres langues publiées | [Français] |
| Format | Électronique |
| Document électronique | |
| Note(s) | Issued also in French under title: Modélisation du potentiel de rétablissement de la truite fardée versant de l'Ouest (Oncorhynchus clarkii lewisi) dans l'unité désignable 1 : populations de la rivière Saskatchewan et du fleuve Nelson. "Central and Arctic Region." "July 2020." Includes bibliographical references (pages 23-26). |
| Information sur la publication | Ottawa ON : Canadian Science Advisory Secretariat (CSAS), 2020. ©2020 |
| Auteur / Contributeur | Lee, Adam S. van der, author. |
| Description | 1 online resource (v, 26 pages) : illustrations (some colour). |
| Numéro de catalogue |
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| Descripteurs | Westslope cutthroat trout -- Population viability analysis -- Alberta. Westslope cutthroat trout -- Conservation -- Alberta. Wildlife recovery -- Alberta. |
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