Marine mortality in the river? Atlantic salmon smolts under high predation pressure in the last kilometres of a river monitored for stock assessment
The River Bush (Northern Ireland) is an index river for the estimation of Atlantic salmon, Salmo salar L., stock size, population dynamics and marine survival rates. Marine survival estimates are based on the number of smolts counted at a trap 3.5 km upstream of the river outlet. The survival from r...
Published in: | Fisheries Management and Ecology |
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Language: | English |
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2020
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Online Access: | https://orbit.dtu.dk/en/publications/e6f750cc-c57d-4ac7-8ca8-e7be235c0a55 https://doi.org/10.1111/fme.12405 |
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ftdtupubl:oai:pure.atira.dk:publications/e6f750cc-c57d-4ac7-8ca8-e7be235c0a55 2024-09-15T17:56:07+00:00 Marine mortality in the river? Atlantic salmon smolts under high predation pressure in the last kilometres of a river monitored for stock assessment Flávio, Hugo de Moura Kennedy, Richard Ensing, Dennis Jepsen, Niels Aarestrup, Kim 2020 https://orbit.dtu.dk/en/publications/e6f750cc-c57d-4ac7-8ca8-e7be235c0a55 https://doi.org/10.1111/fme.12405 eng eng https://orbit.dtu.dk/en/publications/e6f750cc-c57d-4ac7-8ca8-e7be235c0a55 info:eu-repo/semantics/closedAccess Flávio , H D M , Kennedy , R , Ensing , D , Jepsen , N & Aarestrup , K 2020 , ' Marine mortality in the river? Atlantic salmon smolts under high predation pressure in the last kilometres of a river monitored for stock assessment ' , Fisheries Management and Ecology , vol. 27 , no. 1 , pp. 92-101 . https://doi.org/10.1111/fme.12405 Avian predation Diel cycle Management opportunity Salmo salar Seaward migration Telemetry /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water article 2020 ftdtupubl https://doi.org/10.1111/fme.12405 2024-07-22T23:50:05Z The River Bush (Northern Ireland) is an index river for the estimation of Atlantic salmon, Salmo salar L., stock size, population dynamics and marine survival rates. Marine survival estimates are based on the number of smolts counted at a trap 3.5 km upstream of the river outlet. The survival from release to coastal inshore waters for acoustic‐tagged smolts released at the Bushmills trap varied between 32% and 68%, with both year and brightness during river exit playing a significant role in explaining the variations in survival. This constitutes an important survival bottleneck. Contrary to true marine mortality, this significant loss of smolts in the river and nearshore environments could be reduced by focused management actions. More studies on other rivers, where smolts are enumerated above the head of tide, could further partition smolt and post‐smolt mortality, help differentiate true marine survival and help understand fluctuations in adult returns. Article in Journal/Newspaper Atlantic salmon Salmo salar Technical University of Denmark: DTU Orbit Fisheries Management and Ecology 27 1 92 101 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Avian predation Diel cycle Management opportunity Salmo salar Seaward migration Telemetry /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
Avian predation Diel cycle Management opportunity Salmo salar Seaward migration Telemetry /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water Flávio, Hugo de Moura Kennedy, Richard Ensing, Dennis Jepsen, Niels Aarestrup, Kim Marine mortality in the river? Atlantic salmon smolts under high predation pressure in the last kilometres of a river monitored for stock assessment |
topic_facet |
Avian predation Diel cycle Management opportunity Salmo salar Seaward migration Telemetry /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
description |
The River Bush (Northern Ireland) is an index river for the estimation of Atlantic salmon, Salmo salar L., stock size, population dynamics and marine survival rates. Marine survival estimates are based on the number of smolts counted at a trap 3.5 km upstream of the river outlet. The survival from release to coastal inshore waters for acoustic‐tagged smolts released at the Bushmills trap varied between 32% and 68%, with both year and brightness during river exit playing a significant role in explaining the variations in survival. This constitutes an important survival bottleneck. Contrary to true marine mortality, this significant loss of smolts in the river and nearshore environments could be reduced by focused management actions. More studies on other rivers, where smolts are enumerated above the head of tide, could further partition smolt and post‐smolt mortality, help differentiate true marine survival and help understand fluctuations in adult returns. |
format |
Article in Journal/Newspaper |
author |
Flávio, Hugo de Moura Kennedy, Richard Ensing, Dennis Jepsen, Niels Aarestrup, Kim |
author_facet |
Flávio, Hugo de Moura Kennedy, Richard Ensing, Dennis Jepsen, Niels Aarestrup, Kim |
author_sort |
Flávio, Hugo de Moura |
title |
Marine mortality in the river? Atlantic salmon smolts under high predation pressure in the last kilometres of a river monitored for stock assessment |
title_short |
Marine mortality in the river? Atlantic salmon smolts under high predation pressure in the last kilometres of a river monitored for stock assessment |
title_full |
Marine mortality in the river? Atlantic salmon smolts under high predation pressure in the last kilometres of a river monitored for stock assessment |
title_fullStr |
Marine mortality in the river? Atlantic salmon smolts under high predation pressure in the last kilometres of a river monitored for stock assessment |
title_full_unstemmed |
Marine mortality in the river? Atlantic salmon smolts under high predation pressure in the last kilometres of a river monitored for stock assessment |
title_sort |
marine mortality in the river? atlantic salmon smolts under high predation pressure in the last kilometres of a river monitored for stock assessment |
publishDate |
2020 |
url |
https://orbit.dtu.dk/en/publications/e6f750cc-c57d-4ac7-8ca8-e7be235c0a55 https://doi.org/10.1111/fme.12405 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Flávio , H D M , Kennedy , R , Ensing , D , Jepsen , N & Aarestrup , K 2020 , ' Marine mortality in the river? Atlantic salmon smolts under high predation pressure in the last kilometres of a river monitored for stock assessment ' , Fisheries Management and Ecology , vol. 27 , no. 1 , pp. 92-101 . https://doi.org/10.1111/fme.12405 |
op_relation |
https://orbit.dtu.dk/en/publications/e6f750cc-c57d-4ac7-8ca8-e7be235c0a55 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1111/fme.12405 |
container_title |
Fisheries Management and Ecology |
container_volume |
27 |
container_issue |
1 |
container_start_page |
92 |
op_container_end_page |
101 |
_version_ |
1810432323798171648 |