dc.contributor |
Háskóli Íslands |
dc.contributor |
University of Iceland |
dc.contributor.author |
Strøm, John Fredrik |
dc.contributor.author |
Rikardsen, Audun Håvard |
dc.contributor.author |
Campana, Steven |
dc.contributor.author |
Righton, David |
dc.contributor.author |
Carr, Jonathan |
dc.contributor.author |
Aarestrup, Kim |
dc.contributor.author |
Stokesbury, Michael J. W. |
dc.contributor.author |
Gargan, Patrick |
dc.contributor.author |
Javierre, Pablo Caballero |
dc.contributor.author |
Thorstad, Eva Bonsak |
dc.date.accessioned |
2020-03-02T15:40:15Z |
dc.date.available |
2020-03-02T15:40:15Z |
dc.date.issued |
2019-05-27 |
dc.identifier.citation |
Strøm, J.F., Rikardsen, A.H., Campana, S.E. et al. Ocean predation and mortality of adult Atlantic salmon. Scientific Reports 9, 7890 (2019). https://doi.org/10.1038/s41598-019-44041-5 |
dc.identifier.issn |
2045-2322 |
dc.identifier.uri |
https://hdl.handle.net/20.500.11815/1570 |
dc.description |
Publisher's version (útgefin grein). |
dc.description.abstract |
Predation and mortality are often difcult to estimate in the ocean, which hampers the management
and conservation of marine fshes. We used data from pop-up satellite archival tags to investigate the
ocean predation and mortality of adult Atlantic salmon (Salmo salar) released from 12 rivers fowing
into the North Atlantic Ocean. Data from 156 tagged fsh revealed 22 defnite predation events (14%)
and 38 undetermined mortalities (24%). Endothermic fsh were the most common predators (n=13),
with most of these predation events occurring in the Gulf of St. Lawrence and from the Bay of Biscay
to the Irish Shelf. Predation by marine mammals, most likely large deep-diving toothed whales (n=5),
and large ectothermic fsh (n=4) were less frequent. Both the estimated predation rates (ZP) and total
mortality rates (ZM) where higher for Atlantic salmon from Canada, Ireland, and Spain (ZP=0.60–
1.32y−1, ZM =1.73–3.08y−1) than from Denmark and Norway (ZP=0–0.13y−1, ZM =0.19–1.03y−1). This
geographical variation in ocean mortality correlates with ongoing population declines, which are more
profound for southern populations, indicating that low ocean survival of adults may act as an additional
stressor to already vulnerable populations. |
dc.description.sponsorship |
We thank Alta Laksefskeri Interessentskap, Atlantic Salmon Conservation Foundation, Danish Rod and Net
License Fund, Inland Fisheries Ireland, Miramichi Salmon Association, Research Council of Norway project
280308 SeaSalar, Tromsø Research Foundation, and Xunta de Galicia for supporting and funding this project. We
also thank all staf, students, and volunteers who have contributed to the feldwork, and Timothy F. Sheehan and
Jaakko Erkinaro for insightful discussion on an earlier version of the manuscript. |
dc.format.extent |
7890 |
dc.language.iso |
en |
dc.publisher |
Springer Science and Business Media LLC |
dc.relation.ispartofseries |
Scientific Reports;9(1) |
dc.rights |
info:eu-repo/semantics/openAccess |
dc.subject |
Ecology |
dc.subject |
Ichthyology |
dc.subject |
Vistfræði |
dc.subject |
Fiskifræði |
dc.subject |
Atlantshafslax |
dc.title |
Ocean predation and mortality of adult Atlantic salmon |
dc.type |
info:eu-repo/semantics/article |
dcterms.license |
Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
dc.description.version |
Peer Reviewed |
dc.identifier.journal |
Scientific Reports |
dc.identifier.doi |
10.1038/s41598-019-44041-5 |
dc.contributor.department |
Líf- og umhverfisvísindadeild (HÍ) |
dc.contributor.department |
Faculty of Life and Environmental Sciences (UI) |
dc.contributor.school |
School of Engineering and Natural Sciences (UI) |
dc.contributor.school |
Verkfræði- og náttúruvísindasvið (HÍ) |