Patterns of declining zooplankton energy in the Northeast Atlantic as an indicator for marine survival of Atlantic salmon
Return rates of Atlantic salmon (Salmo salar) from the sea to European rivers have declined in recent decades. The first months at sea are critical for growth and survival; recent evidence suggests that reduced food availability may be a contributory factor to the observed declines. Here, zooplankto...
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ftustrathclyde:oai:strathprints.strath.ac.uk:89495 2024-09-15T17:56:10+00:00 Patterns of declining zooplankton energy in the Northeast Atlantic as an indicator for marine survival of Atlantic salmon Tyldesley, Emma Banas, Neil S. Diack, Graeme Kennedy, Richard Gillson, Jonathan Johns, David G. Bull, Colin 2024-08-01 text https://strathprints.strath.ac.uk/89495/ https://strathprints.strath.ac.uk/89495/13/Tyldesley-etal-ICES-JMS-2024-Patterns-of-declining-zooplankton-energy-in-the-northeast.pdf https://doi.org/10.1093/icesjms/fsae077 en eng https://strathprints.strath.ac.uk/89495/13/Tyldesley-etal-ICES-JMS-2024-Patterns-of-declining-zooplankton-energy-in-the-northeast.pdf Tyldesley, Emma <https://strathprints.strath.ac.uk/view/author/1376172.html> and Banas, Neil S. <https://strathprints.strath.ac.uk/view/author/884063.html> and Diack, Graeme and Kennedy, Richard and Gillson, Jonathan and Johns, David G. and Bull, Colin (2024 <https://strathprints.strath.ac.uk/view/year/2024.html>) Patterns of declining zooplankton energy in the Northeast Atlantic as an indicator for marine survival of Atlantic salmon. ICES Journal of Marine Science <https://strathprints.strath.ac.uk/view/publications/ICES_Journal_of_Marine_Science.html>, 81 (6). pp. 1164-1184. ISSN 1054-3139 cc_by Zoology Oceanography Article PeerReviewed 2024 ftustrathclyde https://doi.org/10.1093/icesjms/fsae077 2024-09-04T00:21:46Z Return rates of Atlantic salmon (Salmo salar) from the sea to European rivers have declined in recent decades. The first months at sea are critical for growth and survival; recent evidence suggests that reduced food availability may be a contributory factor to the observed declines. Here, zooplankton abundance data are used to derive a measure of prey energy available to forage fish prey of salmon during early marine migration. This zooplankton prey energy has significantly and dramatically declined over much of the northeast Atlantic, and specifically within key salmon migration domains, over the past 60 years. Marine return rates from a set of southern European populations are found to exhibit clustering not entirely predictable from geographical proximity. Variability in grouped return rates from these populations is correlated with zooplankton energy on a range of scales, demonstrating the potential use of zooplankton energy as an indicator of salmon marine survival. Comparison with environmental variables derived from ocean model reanalysis data suggests zooplankton energy is regulated by a combination of climate change impacts on ecosystem productivity and multi-decadal variability in water mass influence along the migration routes. Article in Journal/Newspaper Atlantic salmon Northeast Atlantic Salmo salar University of Strathclyde Glasgow: Strathprints ICES Journal of Marine Science |
institution |
Open Polar |
collection |
University of Strathclyde Glasgow: Strathprints |
op_collection_id |
ftustrathclyde |
language |
English |
topic |
Zoology Oceanography |
spellingShingle |
Zoology Oceanography Tyldesley, Emma Banas, Neil S. Diack, Graeme Kennedy, Richard Gillson, Jonathan Johns, David G. Bull, Colin Patterns of declining zooplankton energy in the Northeast Atlantic as an indicator for marine survival of Atlantic salmon |
topic_facet |
Zoology Oceanography |
description |
Return rates of Atlantic salmon (Salmo salar) from the sea to European rivers have declined in recent decades. The first months at sea are critical for growth and survival; recent evidence suggests that reduced food availability may be a contributory factor to the observed declines. Here, zooplankton abundance data are used to derive a measure of prey energy available to forage fish prey of salmon during early marine migration. This zooplankton prey energy has significantly and dramatically declined over much of the northeast Atlantic, and specifically within key salmon migration domains, over the past 60 years. Marine return rates from a set of southern European populations are found to exhibit clustering not entirely predictable from geographical proximity. Variability in grouped return rates from these populations is correlated with zooplankton energy on a range of scales, demonstrating the potential use of zooplankton energy as an indicator of salmon marine survival. Comparison with environmental variables derived from ocean model reanalysis data suggests zooplankton energy is regulated by a combination of climate change impacts on ecosystem productivity and multi-decadal variability in water mass influence along the migration routes. |
format |
Article in Journal/Newspaper |
author |
Tyldesley, Emma Banas, Neil S. Diack, Graeme Kennedy, Richard Gillson, Jonathan Johns, David G. Bull, Colin |
author_facet |
Tyldesley, Emma Banas, Neil S. Diack, Graeme Kennedy, Richard Gillson, Jonathan Johns, David G. Bull, Colin |
author_sort |
Tyldesley, Emma |
title |
Patterns of declining zooplankton energy in the Northeast Atlantic as an indicator for marine survival of Atlantic salmon |
title_short |
Patterns of declining zooplankton energy in the Northeast Atlantic as an indicator for marine survival of Atlantic salmon |
title_full |
Patterns of declining zooplankton energy in the Northeast Atlantic as an indicator for marine survival of Atlantic salmon |
title_fullStr |
Patterns of declining zooplankton energy in the Northeast Atlantic as an indicator for marine survival of Atlantic salmon |
title_full_unstemmed |
Patterns of declining zooplankton energy in the Northeast Atlantic as an indicator for marine survival of Atlantic salmon |
title_sort |
patterns of declining zooplankton energy in the northeast atlantic as an indicator for marine survival of atlantic salmon |
publishDate |
2024 |
url |
https://strathprints.strath.ac.uk/89495/ https://strathprints.strath.ac.uk/89495/13/Tyldesley-etal-ICES-JMS-2024-Patterns-of-declining-zooplankton-energy-in-the-northeast.pdf https://doi.org/10.1093/icesjms/fsae077 |
genre |
Atlantic salmon Northeast Atlantic Salmo salar |
genre_facet |
Atlantic salmon Northeast Atlantic Salmo salar |
op_relation |
https://strathprints.strath.ac.uk/89495/13/Tyldesley-etal-ICES-JMS-2024-Patterns-of-declining-zooplankton-energy-in-the-northeast.pdf Tyldesley, Emma <https://strathprints.strath.ac.uk/view/author/1376172.html> and Banas, Neil S. <https://strathprints.strath.ac.uk/view/author/884063.html> and Diack, Graeme and Kennedy, Richard and Gillson, Jonathan and Johns, David G. and Bull, Colin (2024 <https://strathprints.strath.ac.uk/view/year/2024.html>) Patterns of declining zooplankton energy in the Northeast Atlantic as an indicator for marine survival of Atlantic salmon. ICES Journal of Marine Science <https://strathprints.strath.ac.uk/view/publications/ICES_Journal_of_Marine_Science.html>, 81 (6). pp. 1164-1184. ISSN 1054-3139 |
op_rights |
cc_by |
op_doi |
https://doi.org/10.1093/icesjms/fsae077 |
container_title |
ICES Journal of Marine Science |
_version_ |
1810432375894573056 |