Body length changes for Atlantic salmon ( Salmo salar) over five decades exhibit weak spatial synchrony over a broad latitudinal gradient
Abstract Understanding the factors that drive spatial synchrony among populations or species is important for management and recovery of populations. The range‐wide declines in Atlantic salmon ( Salmo salar ) populations may be the result of broad‐scale changes in the marine environment. Salmon unde...
Published in: | Ecology and Evolution |
---|---|
Main Authors: | , , , , , , , , , , , , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2024
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1002/ece3.11538 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.11538 |
id |
crwiley:10.1002/ece3.11538 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1002/ece3.11538 2024-09-15T17:56:00+00:00 Body length changes for Atlantic salmon ( Salmo salar) over five decades exhibit weak spatial synchrony over a broad latitudinal gradient Imlay, Tara L. Breau, Cindy Dauphin, Guillaume J. R. Chaput, Gérald April, Julien Douglas, Scott Hogan, J. Derek McWilliam, Sherise Notte, Daniela Robertson, Martha J. Taylor, Andrew Underhill, Kari Weir, Laura K. Fisheries and Oceans Canada 2024 http://dx.doi.org/10.1002/ece3.11538 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.11538 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Ecology and Evolution volume 14, issue 6 ISSN 2045-7758 2045-7758 journal-article 2024 crwiley https://doi.org/10.1002/ece3.11538 2024-07-25T04:20:56Z Abstract Understanding the factors that drive spatial synchrony among populations or species is important for management and recovery of populations. The range‐wide declines in Atlantic salmon ( Salmo salar ) populations may be the result of broad‐scale changes in the marine environment. Salmon undergo rapid growth in the ocean; therefore changing marine conditions may affect body size and fecundity estimates used to evaluate whether stock reference points are met. Using a dataset that spanned five decades, 172,268 individuals, and 19 rivers throughout Eastern Canada, we investigated the occurrence of spatial synchrony in changes in the body size of returning wild adult Atlantic salmon. Body size was then related to conditions in the marine environment (i.e., climate indices, thermal habitat availability, food availability, density‐dependence, and fisheries exploitation rates) that may act on all populations during the ocean feeding phase of their life cycle. Body size increased during the 1980s and 1990s for salmon that returned to rivers after one (1SW) or two winters at sea (2SW); however, significant changes were only observed for 1SW and/or 2SW in some mid‐latitude and northern rivers (10/13 rivers with 10 of more years of data during these decades) and not in southern rivers (0/2), suggesting weak spatial synchrony across Eastern Canada. For 1SW salmon in nine rivers, body size was longer when fisheries exploitation rates were lower. For 2SW salmon, body size was longer when suitable thermal habitat was more abundant (significant for 3/8 rivers) and the Atlantic Multidecadal Oscillation was higher (i.e., warmer sea surface temperatures; significant for 4/8 rivers). Overall, the weak spatial synchrony and variable effects of covariates on body size across rivers suggest that changes in Atlantic salmon body size may not be solely driven by shared conditions in the marine environment. Regardless, body size changes may have consequences for population management and recovery through the relationship between ... Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Ecology and Evolution 14 6 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract Understanding the factors that drive spatial synchrony among populations or species is important for management and recovery of populations. The range‐wide declines in Atlantic salmon ( Salmo salar ) populations may be the result of broad‐scale changes in the marine environment. Salmon undergo rapid growth in the ocean; therefore changing marine conditions may affect body size and fecundity estimates used to evaluate whether stock reference points are met. Using a dataset that spanned five decades, 172,268 individuals, and 19 rivers throughout Eastern Canada, we investigated the occurrence of spatial synchrony in changes in the body size of returning wild adult Atlantic salmon. Body size was then related to conditions in the marine environment (i.e., climate indices, thermal habitat availability, food availability, density‐dependence, and fisheries exploitation rates) that may act on all populations during the ocean feeding phase of their life cycle. Body size increased during the 1980s and 1990s for salmon that returned to rivers after one (1SW) or two winters at sea (2SW); however, significant changes were only observed for 1SW and/or 2SW in some mid‐latitude and northern rivers (10/13 rivers with 10 of more years of data during these decades) and not in southern rivers (0/2), suggesting weak spatial synchrony across Eastern Canada. For 1SW salmon in nine rivers, body size was longer when fisheries exploitation rates were lower. For 2SW salmon, body size was longer when suitable thermal habitat was more abundant (significant for 3/8 rivers) and the Atlantic Multidecadal Oscillation was higher (i.e., warmer sea surface temperatures; significant for 4/8 rivers). Overall, the weak spatial synchrony and variable effects of covariates on body size across rivers suggest that changes in Atlantic salmon body size may not be solely driven by shared conditions in the marine environment. Regardless, body size changes may have consequences for population management and recovery through the relationship between ... |
author2 |
Fisheries and Oceans Canada |
format |
Article in Journal/Newspaper |
author |
Imlay, Tara L. Breau, Cindy Dauphin, Guillaume J. R. Chaput, Gérald April, Julien Douglas, Scott Hogan, J. Derek McWilliam, Sherise Notte, Daniela Robertson, Martha J. Taylor, Andrew Underhill, Kari Weir, Laura K. |
spellingShingle |
Imlay, Tara L. Breau, Cindy Dauphin, Guillaume J. R. Chaput, Gérald April, Julien Douglas, Scott Hogan, J. Derek McWilliam, Sherise Notte, Daniela Robertson, Martha J. Taylor, Andrew Underhill, Kari Weir, Laura K. Body length changes for Atlantic salmon ( Salmo salar) over five decades exhibit weak spatial synchrony over a broad latitudinal gradient |
author_facet |
Imlay, Tara L. Breau, Cindy Dauphin, Guillaume J. R. Chaput, Gérald April, Julien Douglas, Scott Hogan, J. Derek McWilliam, Sherise Notte, Daniela Robertson, Martha J. Taylor, Andrew Underhill, Kari Weir, Laura K. |
author_sort |
Imlay, Tara L. |
title |
Body length changes for Atlantic salmon ( Salmo salar) over five decades exhibit weak spatial synchrony over a broad latitudinal gradient |
title_short |
Body length changes for Atlantic salmon ( Salmo salar) over five decades exhibit weak spatial synchrony over a broad latitudinal gradient |
title_full |
Body length changes for Atlantic salmon ( Salmo salar) over five decades exhibit weak spatial synchrony over a broad latitudinal gradient |
title_fullStr |
Body length changes for Atlantic salmon ( Salmo salar) over five decades exhibit weak spatial synchrony over a broad latitudinal gradient |
title_full_unstemmed |
Body length changes for Atlantic salmon ( Salmo salar) over five decades exhibit weak spatial synchrony over a broad latitudinal gradient |
title_sort |
body length changes for atlantic salmon ( salmo salar) over five decades exhibit weak spatial synchrony over a broad latitudinal gradient |
publisher |
Wiley |
publishDate |
2024 |
url |
http://dx.doi.org/10.1002/ece3.11538 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.11538 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Ecology and Evolution volume 14, issue 6 ISSN 2045-7758 2045-7758 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/ece3.11538 |
container_title |
Ecology and Evolution |
container_volume |
14 |
container_issue |
6 |
_version_ |
1810432216895848448 |