Temporal and spatial variation in growth of juvenile Atlantic salmon
Spatial and temporal variation in length‐at‐age and environmental factors affecting variation in growth rate of juvenile Atlantic salmon Salmo salar were studied using data from a long‐term study in the River Stjørdalselva, central Norway. Mean annual instantaneous growth rate among 1+ and 2+year ju...
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crwiley:10.1111/j.0022-1112.2006.00986.x 2024-06-02T08:03:15+00:00 Temporal and spatial variation in growth of juvenile Atlantic salmon Arnekleiv, J. V. Finstad, A. G. Rønning, L. 2006 http://dx.doi.org/10.1111/j.0022-1112.2006.00986.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.0022-1112.2006.00986.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.0022-1112.2006.00986.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 68, issue 4, page 1062-1076 ISSN 0022-1112 1095-8649 journal-article 2006 crwiley https://doi.org/10.1111/j.0022-1112.2006.00986.x 2024-05-03T11:25:25Z Spatial and temporal variation in length‐at‐age and environmental factors affecting variation in growth rate of juvenile Atlantic salmon Salmo salar were studied using data from a long‐term study in the River Stjørdalselva, central Norway. Mean annual instantaneous growth rate among 1+ and 2+year juvenile Atlantic salmon varied between 0·59 and 1·50 g g −1 year −1 and mean instantaneous daily growth rate of young‐of‐the‐year (YOY) varied between 0·013 and 0·033 g g −1 day −1 . Between year variation in growth was larger than the within year intra‐watercourse spatial variation. For YOY and 1+year Atlantic salmon, a major part of the observed between year variation in growth rates was explained by variation in mean daily water discharge and spring temperature. For 2+year juvenile Atlantic salmon, mean daily water discharge and cohort density were the only variables to significantly explain variation in growth rates. A large part of the within water‐course spatial variation could not be explained by temperature variations and juvenile Atlantic salmon in the uppermost areas of the river, experiencing the lowest ambient temperatures during the growth period, displayed the highest growth rates. Within the baselines set by temperature, biotic and abiotic factors connected to water flow regime and variation in food availability are suggested to be a major determinants of the temporal and spatial variation in juvenile Atlantic salmon growth rates. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Norway Journal of Fish Biology 68 4 1062 1076 |
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English |
description |
Spatial and temporal variation in length‐at‐age and environmental factors affecting variation in growth rate of juvenile Atlantic salmon Salmo salar were studied using data from a long‐term study in the River Stjørdalselva, central Norway. Mean annual instantaneous growth rate among 1+ and 2+year juvenile Atlantic salmon varied between 0·59 and 1·50 g g −1 year −1 and mean instantaneous daily growth rate of young‐of‐the‐year (YOY) varied between 0·013 and 0·033 g g −1 day −1 . Between year variation in growth was larger than the within year intra‐watercourse spatial variation. For YOY and 1+year Atlantic salmon, a major part of the observed between year variation in growth rates was explained by variation in mean daily water discharge and spring temperature. For 2+year juvenile Atlantic salmon, mean daily water discharge and cohort density were the only variables to significantly explain variation in growth rates. A large part of the within water‐course spatial variation could not be explained by temperature variations and juvenile Atlantic salmon in the uppermost areas of the river, experiencing the lowest ambient temperatures during the growth period, displayed the highest growth rates. Within the baselines set by temperature, biotic and abiotic factors connected to water flow regime and variation in food availability are suggested to be a major determinants of the temporal and spatial variation in juvenile Atlantic salmon growth rates. |
format |
Article in Journal/Newspaper |
author |
Arnekleiv, J. V. Finstad, A. G. Rønning, L. |
spellingShingle |
Arnekleiv, J. V. Finstad, A. G. Rønning, L. Temporal and spatial variation in growth of juvenile Atlantic salmon |
author_facet |
Arnekleiv, J. V. Finstad, A. G. Rønning, L. |
author_sort |
Arnekleiv, J. V. |
title |
Temporal and spatial variation in growth of juvenile Atlantic salmon |
title_short |
Temporal and spatial variation in growth of juvenile Atlantic salmon |
title_full |
Temporal and spatial variation in growth of juvenile Atlantic salmon |
title_fullStr |
Temporal and spatial variation in growth of juvenile Atlantic salmon |
title_full_unstemmed |
Temporal and spatial variation in growth of juvenile Atlantic salmon |
title_sort |
temporal and spatial variation in growth of juvenile atlantic salmon |
publisher |
Wiley |
publishDate |
2006 |
url |
http://dx.doi.org/10.1111/j.0022-1112.2006.00986.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.0022-1112.2006.00986.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.0022-1112.2006.00986.x |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Journal of Fish Biology volume 68, issue 4, page 1062-1076 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.0022-1112.2006.00986.x |
container_title |
Journal of Fish Biology |
container_volume |
68 |
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4 |
container_start_page |
1062 |
op_container_end_page |
1076 |
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1800747721507733504 |