Density independent use of shallow riverine areas in juvenile Atlantic salmon
Habitat use of aquatic organisms is essential to evaluate effects of many environmental challenges like effects of hydro-power regulation, where stranding may occur under hydropeaking (rapid dewatering of shallow river areas). Experimental studies as well as observations from nature with juvenile At...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Language: | English |
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NRC Research Press (Canadian Science Publishing)
2018
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Online Access: | http://hdl.handle.net/11250/2562838 https://doi.org/10.1139/cjfas-2017-0500 |
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ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/2562838 2023-05-15T15:31:34+02:00 Density independent use of shallow riverine areas in juvenile Atlantic salmon Puffer, Michael Berg, Ole Kristian Hamnes, Frøydis Bolme Bentsen, Vidar Koch, Wouter Ugedal, Ola Forseth, Torbjørn Arnekleiv, Jo Vegar Einum, Sigurd 2018 http://hdl.handle.net/11250/2562838 https://doi.org/10.1139/cjfas-2017-0500 eng eng NRC Research Press (Canadian Science Publishing) Norges forskningsråd: 193818 urn:issn:0706-652X http://hdl.handle.net/11250/2562838 https://doi.org/10.1139/cjfas-2017-0500 cristin:1609605 Canadian Journal of Fisheries and Aquatic Sciences VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 Journal article Peer reviewed 2018 ftntnutrondheimi https://doi.org/10.1139/cjfas-2017-0500 2019-09-17T06:54:15Z Habitat use of aquatic organisms is essential to evaluate effects of many environmental challenges like effects of hydro-power regulation, where stranding may occur under hydropeaking (rapid dewatering of shallow river areas). Experimental studies as well as observations from nature with juvenile Atlantic salmon (Salmo salar) show that the proportion of the population that uses shallow depth was both independent of population density and decreasing with fish size. Experiments were conducted both in the presence and in absence of older fish, during day and night, and during all four seasons. Juvenile salmon from deep areas may therefore distribute into the shallow areas even when fish density becomes reduced. Thus, low density does not lead to reduced stranding risk and shallow areas may therefore function as a sink in a within-generation source-sink dynamic under a repeated hydropeaking scenario. The sink effect of rapid dewatering in shallow areas may be mitigated by e.g. seasonal and diurnal regulation of hydropeaking activity, but dewatering may still result in extinction of weak populations. habitat use, hydropeaking, intracohort competition, intercohort competition, microhabitat use, stranding acceptedVersion Copyright the Author. Published by NRC Research Press (Canadian Science Publishing). This Just-IN manuscript is the accepted manuscript prior to copy editing and page composition. It may differ from the final official version of record. Article in Journal/Newspaper Atlantic salmon Salmo salar NTNU Open Archive (Norwegian University of Science and Technology) Canadian Journal of Fisheries and Aquatic Sciences 76 7 1161 1170 |
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Open Polar |
collection |
NTNU Open Archive (Norwegian University of Science and Technology) |
op_collection_id |
ftntnutrondheimi |
language |
English |
topic |
VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 |
spellingShingle |
VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 Puffer, Michael Berg, Ole Kristian Hamnes, Frøydis Bolme Bentsen, Vidar Koch, Wouter Ugedal, Ola Forseth, Torbjørn Arnekleiv, Jo Vegar Einum, Sigurd Density independent use of shallow riverine areas in juvenile Atlantic salmon |
topic_facet |
VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 |
description |
Habitat use of aquatic organisms is essential to evaluate effects of many environmental challenges like effects of hydro-power regulation, where stranding may occur under hydropeaking (rapid dewatering of shallow river areas). Experimental studies as well as observations from nature with juvenile Atlantic salmon (Salmo salar) show that the proportion of the population that uses shallow depth was both independent of population density and decreasing with fish size. Experiments were conducted both in the presence and in absence of older fish, during day and night, and during all four seasons. Juvenile salmon from deep areas may therefore distribute into the shallow areas even when fish density becomes reduced. Thus, low density does not lead to reduced stranding risk and shallow areas may therefore function as a sink in a within-generation source-sink dynamic under a repeated hydropeaking scenario. The sink effect of rapid dewatering in shallow areas may be mitigated by e.g. seasonal and diurnal regulation of hydropeaking activity, but dewatering may still result in extinction of weak populations. habitat use, hydropeaking, intracohort competition, intercohort competition, microhabitat use, stranding acceptedVersion Copyright the Author. Published by NRC Research Press (Canadian Science Publishing). This Just-IN manuscript is the accepted manuscript prior to copy editing and page composition. It may differ from the final official version of record. |
format |
Article in Journal/Newspaper |
author |
Puffer, Michael Berg, Ole Kristian Hamnes, Frøydis Bolme Bentsen, Vidar Koch, Wouter Ugedal, Ola Forseth, Torbjørn Arnekleiv, Jo Vegar Einum, Sigurd |
author_facet |
Puffer, Michael Berg, Ole Kristian Hamnes, Frøydis Bolme Bentsen, Vidar Koch, Wouter Ugedal, Ola Forseth, Torbjørn Arnekleiv, Jo Vegar Einum, Sigurd |
author_sort |
Puffer, Michael |
title |
Density independent use of shallow riverine areas in juvenile Atlantic salmon |
title_short |
Density independent use of shallow riverine areas in juvenile Atlantic salmon |
title_full |
Density independent use of shallow riverine areas in juvenile Atlantic salmon |
title_fullStr |
Density independent use of shallow riverine areas in juvenile Atlantic salmon |
title_full_unstemmed |
Density independent use of shallow riverine areas in juvenile Atlantic salmon |
title_sort |
density independent use of shallow riverine areas in juvenile atlantic salmon |
publisher |
NRC Research Press (Canadian Science Publishing) |
publishDate |
2018 |
url |
http://hdl.handle.net/11250/2562838 https://doi.org/10.1139/cjfas-2017-0500 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences |
op_relation |
Norges forskningsråd: 193818 urn:issn:0706-652X http://hdl.handle.net/11250/2562838 https://doi.org/10.1139/cjfas-2017-0500 cristin:1609605 |
op_doi |
https://doi.org/10.1139/cjfas-2017-0500 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
76 |
container_issue |
7 |
container_start_page |
1161 |
op_container_end_page |
1170 |
_version_ |
1766362092093308928 |