Diving behaviour of Atlantic salmon at sea: effects of light regimes and temperature stratification
Accepted manuscript version. Published version available in Marine Ecology Progress Series, 2017;574:127-140 The diving behaviour of adult Atlantic salmon Salmo salar L. post-spawners in the Norwegian and Barents Seas was monitored with pop-up satellite archival tags (PSATs) and data storage tags (D...
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Online Access: | https://hdl.handle.net/10037/12101 https://doi.org/10.3354/meps12180 |
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ftunivtroemsoe:oai:munin.uit.no:10037/12101 2023-05-15T15:30:56+02:00 Diving behaviour of Atlantic salmon at sea: effects of light regimes and temperature stratification Hedger, Richard David Rikardsen, Audun H. Strøm, John Fredrik Righton, David A. Thorstad, Eva Bonsak Næsje, Tor 2017-07-04 https://hdl.handle.net/10037/12101 https://doi.org/10.3354/meps12180 eng eng Inter Research Marine Ecology Progress Series Tromsø forskningsstiftelse: supported by Trond Mohn info:eu-repo/grantAgreement/RCN/MILJØFORSK/221400/Norway/Vann: Modeling ocean migration of Atlantic salmon (Salmotrack 2013-2016) Hedger, R.D., Rikardsen, A.H., Strøm, J.F., Righton, D.A., Thorstad, E.B., Næsje, T.F. Diving behaviour of Atlantic salmon at sea: effects of light regimes and temperature stratification. Marine Ecology Progress Series. 2017;574:127-140 FRIDAID 1483841 doi:10.3354/meps12180 0171-8630 1616-1599 https://hdl.handle.net/10037/12101 openAccess VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 Journal article Tidsskriftartikkel Peer reviewed 2017 ftunivtroemsoe https://doi.org/10.3354/meps12180 2021-06-25T17:55:48Z Accepted manuscript version. Published version available in Marine Ecology Progress Series, 2017;574:127-140 The diving behaviour of adult Atlantic salmon Salmo salar L. post-spawners in the Norwegian and Barents Seas was monitored with pop-up satellite archival tags (PSATs) and data storage tags (DSTs). Salmon from the 3 studied populations showed similar depth use patterns: tagged specimens spent most of their time near the surface (mean of 82% of the time at depths <10 m), with occasional short deep dives (>200 m depth, median time = 2.31 h; range = 0.18 to 22.5 h), the deepest recorded being 707 m. Increased use of greater depths occurred during daytime than night-time in the months between polar day and polar night (August to October). Diel change in depth use around the time of polar night (November to January) was weakest for the population (from the River Alta) that migrated furthest north. Diving was more frequent and shallower when the mixed layer was near the surface during the months of June to October. There was an increase in diving depth (>200 m) when the mixed layer extended to ~200 or 300 m in winter and spring (December to April). Deep diving consisted of ‘U’ shaped dives, possibly indicative of foraging. We hypothesise that seasonal light conditions, dependent on geographical location, affect Atlantic salmon diving, and that changes in diving depth may be due to seasonal differences in prey aggregation. Article in Journal/Newspaper Atlantic salmon polar night Salmo salar University of Tromsø: Munin Open Research Archive Alta Marine Ecology Progress Series 574 127 140 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 |
spellingShingle |
VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 Hedger, Richard David Rikardsen, Audun H. Strøm, John Fredrik Righton, David A. Thorstad, Eva Bonsak Næsje, Tor Diving behaviour of Atlantic salmon at sea: effects of light regimes and temperature stratification |
topic_facet |
VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 |
description |
Accepted manuscript version. Published version available in Marine Ecology Progress Series, 2017;574:127-140 The diving behaviour of adult Atlantic salmon Salmo salar L. post-spawners in the Norwegian and Barents Seas was monitored with pop-up satellite archival tags (PSATs) and data storage tags (DSTs). Salmon from the 3 studied populations showed similar depth use patterns: tagged specimens spent most of their time near the surface (mean of 82% of the time at depths <10 m), with occasional short deep dives (>200 m depth, median time = 2.31 h; range = 0.18 to 22.5 h), the deepest recorded being 707 m. Increased use of greater depths occurred during daytime than night-time in the months between polar day and polar night (August to October). Diel change in depth use around the time of polar night (November to January) was weakest for the population (from the River Alta) that migrated furthest north. Diving was more frequent and shallower when the mixed layer was near the surface during the months of June to October. There was an increase in diving depth (>200 m) when the mixed layer extended to ~200 or 300 m in winter and spring (December to April). Deep diving consisted of ‘U’ shaped dives, possibly indicative of foraging. We hypothesise that seasonal light conditions, dependent on geographical location, affect Atlantic salmon diving, and that changes in diving depth may be due to seasonal differences in prey aggregation. |
format |
Article in Journal/Newspaper |
author |
Hedger, Richard David Rikardsen, Audun H. Strøm, John Fredrik Righton, David A. Thorstad, Eva Bonsak Næsje, Tor |
author_facet |
Hedger, Richard David Rikardsen, Audun H. Strøm, John Fredrik Righton, David A. Thorstad, Eva Bonsak Næsje, Tor |
author_sort |
Hedger, Richard David |
title |
Diving behaviour of Atlantic salmon at sea: effects of light regimes and temperature stratification |
title_short |
Diving behaviour of Atlantic salmon at sea: effects of light regimes and temperature stratification |
title_full |
Diving behaviour of Atlantic salmon at sea: effects of light regimes and temperature stratification |
title_fullStr |
Diving behaviour of Atlantic salmon at sea: effects of light regimes and temperature stratification |
title_full_unstemmed |
Diving behaviour of Atlantic salmon at sea: effects of light regimes and temperature stratification |
title_sort |
diving behaviour of atlantic salmon at sea: effects of light regimes and temperature stratification |
publisher |
Inter Research |
publishDate |
2017 |
url |
https://hdl.handle.net/10037/12101 https://doi.org/10.3354/meps12180 |
geographic |
Alta |
geographic_facet |
Alta |
genre |
Atlantic salmon polar night Salmo salar |
genre_facet |
Atlantic salmon polar night Salmo salar |
op_relation |
Marine Ecology Progress Series Tromsø forskningsstiftelse: supported by Trond Mohn info:eu-repo/grantAgreement/RCN/MILJØFORSK/221400/Norway/Vann: Modeling ocean migration of Atlantic salmon (Salmotrack 2013-2016) Hedger, R.D., Rikardsen, A.H., Strøm, J.F., Righton, D.A., Thorstad, E.B., Næsje, T.F. Diving behaviour of Atlantic salmon at sea: effects of light regimes and temperature stratification. Marine Ecology Progress Series. 2017;574:127-140 FRIDAID 1483841 doi:10.3354/meps12180 0171-8630 1616-1599 https://hdl.handle.net/10037/12101 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.3354/meps12180 |
container_title |
Marine Ecology Progress Series |
container_volume |
574 |
container_start_page |
127 |
op_container_end_page |
140 |
_version_ |
1766361421318193152 |