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Detrimental effects of recent ocean surface warming on growth condition of Atlantic Salmon

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Detrimental effects of recent ocean surface warming on growth condition of Atlantic Salmon. / Todd, Christopher David; Hughes, S L; Marshall, C T; MacLean, J C; Lonergan, Mike; Biuw, Martin.

In: Global Change Biology, Vol. 14, No. 5, 05.2008, p. 958-970.

Research output: Contribution to journalArticle

Harvard

Todd, CD, Hughes, SL, Marshall, CT, MacLean, JC, Lonergan, M & Biuw, M 2008, 'Detrimental effects of recent ocean surface warming on growth condition of Atlantic Salmon', Global Change Biology, vol. 14, no. 5, pp. 958-970. https://doi.org/10.1111/j.1365-2486.2007.01522.x

APA

Todd, C. D., Hughes, S. L., Marshall, C. T., MacLean, J. C., Lonergan, M., & Biuw, M. (2008). Detrimental effects of recent ocean surface warming on growth condition of Atlantic Salmon. Global Change Biology, 14(5), 958-970. https://doi.org/10.1111/j.1365-2486.2007.01522.x

Vancouver

Todd CD, Hughes SL, Marshall CT, MacLean JC, Lonergan M, Biuw M. Detrimental effects of recent ocean surface warming on growth condition of Atlantic Salmon. Global Change Biology. 2008 May;14(5):958-970. https://doi.org/10.1111/j.1365-2486.2007.01522.x

Author

Todd, Christopher David ; Hughes, S L ; Marshall, C T ; MacLean, J C ; Lonergan, Mike ; Biuw, Martin. / Detrimental effects of recent ocean surface warming on growth condition of Atlantic Salmon. In: Global Change Biology. 2008 ; Vol. 14, No. 5. pp. 958-970.

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@article{67e24558295b46098be84e05fd18f0e9,
title = "Detrimental effects of recent ocean surface warming on growth condition of Atlantic Salmon",
abstract = "Ocean climate impacts on survivorship and growth of Atlantic salmon are complex, but still poorly understood. Stock abundances have declined over the past three decades and 1992-2006 has seen widespread sea surface temperature (SST) warming of the NE Atlantic, including the foraging areas exploited by salmon of southern European origin. Salmon cease feeding on return migration, and here we express the final growth condition of year-classes of one-sea winter adults at, or just before, freshwater re-entry as the predicted weight at standard length. Two independent 14-year time series for a single river stock and for mixed, multiple stocks revealed almost identical temporal patterns in growth condition variation, and an overall trend decrease of 11-14{\%} over the past decade. Growth condition has fallen as SST anomaly has risen, and for each year-class the midwinter (January) SST anomalies they experienced at sea correlated negatively with their final condition on migratory return during the subsequent summer months. Stored lipids are crucial for survival and for the prespawning provisioning of eggs in freshwater, and we show that under-weight individuals have disproportionately low reserves. The poorest condition fish (similar to 30{\%} under-weight) returned with lipid stores reduced by similar to 80{\%}. This study concurs with previous analyses of other North Atlantic top consumers (e.g. somatic condition of tuna, reproductive failure of seabirds) showing evidence of major, recent climate-driven changes in the eastern North Atlantic pelagic ecosystem, and the likely importance of bottom-up control processes. Because salmon abundances presently remain at historical lows, fecundity of recent year-classes will have been increasingly compromised. Measures of year-class growth condition should therefore be incorporated in the analysis and setting of numerical spawning escapements for threatened stocks, and conservation limits should be revised upwards conservatively during periods of excessive ocean climate warming.",
keywords = "anomaly, Atlantic salmon, bottom-up control, condition factor, fecundity, lipid reserves, NAO, ocean warming, Salmo salar, spawning, SST, time series, ESCAPED FARMED ATLANTIC, POST-SMOLT GROWTH, NORTH-SEA AREA, SALAR L., CLIMATE-CHANGE, SURVIVAL, BONFERRONI, FISHERIES, POSTSMOLTS, MIGRATION",
author = "Todd, {Christopher David} and Hughes, {S L} and Marshall, {C T} and MacLean, {J C} and Mike Lonergan and Martin Biuw",
note = "02/09/09: Changed from {"}Internet publication{"} to {"}Journal Article{"}.",
year = "2008",
month = "5",
doi = "10.1111/j.1365-2486.2007.01522.x",
language = "English",
volume = "14",
pages = "958--970",
journal = "Global Change Biology",
issn = "1354-1013",
publisher = "John Wiley & Sons, Ltd (10.1111)",
number = "5",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Detrimental effects of recent ocean surface warming on growth condition of Atlantic Salmon

AU - Todd, Christopher David

AU - Hughes, S L

AU - Marshall, C T

AU - MacLean, J C

AU - Lonergan, Mike

AU - Biuw, Martin

N1 - 02/09/09: Changed from "Internet publication" to "Journal Article".

PY - 2008/5

Y1 - 2008/5

N2 - Ocean climate impacts on survivorship and growth of Atlantic salmon are complex, but still poorly understood. Stock abundances have declined over the past three decades and 1992-2006 has seen widespread sea surface temperature (SST) warming of the NE Atlantic, including the foraging areas exploited by salmon of southern European origin. Salmon cease feeding on return migration, and here we express the final growth condition of year-classes of one-sea winter adults at, or just before, freshwater re-entry as the predicted weight at standard length. Two independent 14-year time series for a single river stock and for mixed, multiple stocks revealed almost identical temporal patterns in growth condition variation, and an overall trend decrease of 11-14% over the past decade. Growth condition has fallen as SST anomaly has risen, and for each year-class the midwinter (January) SST anomalies they experienced at sea correlated negatively with their final condition on migratory return during the subsequent summer months. Stored lipids are crucial for survival and for the prespawning provisioning of eggs in freshwater, and we show that under-weight individuals have disproportionately low reserves. The poorest condition fish (similar to 30% under-weight) returned with lipid stores reduced by similar to 80%. This study concurs with previous analyses of other North Atlantic top consumers (e.g. somatic condition of tuna, reproductive failure of seabirds) showing evidence of major, recent climate-driven changes in the eastern North Atlantic pelagic ecosystem, and the likely importance of bottom-up control processes. Because salmon abundances presently remain at historical lows, fecundity of recent year-classes will have been increasingly compromised. Measures of year-class growth condition should therefore be incorporated in the analysis and setting of numerical spawning escapements for threatened stocks, and conservation limits should be revised upwards conservatively during periods of excessive ocean climate warming.

AB - Ocean climate impacts on survivorship and growth of Atlantic salmon are complex, but still poorly understood. Stock abundances have declined over the past three decades and 1992-2006 has seen widespread sea surface temperature (SST) warming of the NE Atlantic, including the foraging areas exploited by salmon of southern European origin. Salmon cease feeding on return migration, and here we express the final growth condition of year-classes of one-sea winter adults at, or just before, freshwater re-entry as the predicted weight at standard length. Two independent 14-year time series for a single river stock and for mixed, multiple stocks revealed almost identical temporal patterns in growth condition variation, and an overall trend decrease of 11-14% over the past decade. Growth condition has fallen as SST anomaly has risen, and for each year-class the midwinter (January) SST anomalies they experienced at sea correlated negatively with their final condition on migratory return during the subsequent summer months. Stored lipids are crucial for survival and for the prespawning provisioning of eggs in freshwater, and we show that under-weight individuals have disproportionately low reserves. The poorest condition fish (similar to 30% under-weight) returned with lipid stores reduced by similar to 80%. This study concurs with previous analyses of other North Atlantic top consumers (e.g. somatic condition of tuna, reproductive failure of seabirds) showing evidence of major, recent climate-driven changes in the eastern North Atlantic pelagic ecosystem, and the likely importance of bottom-up control processes. Because salmon abundances presently remain at historical lows, fecundity of recent year-classes will have been increasingly compromised. Measures of year-class growth condition should therefore be incorporated in the analysis and setting of numerical spawning escapements for threatened stocks, and conservation limits should be revised upwards conservatively during periods of excessive ocean climate warming.

KW - anomaly

KW - Atlantic salmon

KW - bottom-up control

KW - condition factor

KW - fecundity

KW - lipid reserves

KW - NAO

KW - ocean warming

KW - Salmo salar

KW - spawning

KW - SST

KW - time series

KW - ESCAPED FARMED ATLANTIC

KW - POST-SMOLT GROWTH

KW - NORTH-SEA AREA

KW - SALAR L.

KW - CLIMATE-CHANGE

KW - SURVIVAL

KW - BONFERRONI

KW - FISHERIES

KW - POSTSMOLTS

KW - MIGRATION

UR - http://www.scopus.com/inward/record.url?scp=42949107483&partnerID=8YFLogxK

UR - http://www3.interscience.wiley.com/journal/119416732/abstract

U2 - 10.1111/j.1365-2486.2007.01522.x

DO - 10.1111/j.1365-2486.2007.01522.x

M3 - Article

VL - 14

SP - 958

EP - 970

JO - Global Change Biology

JF - Global Change Biology

SN - 1354-1013

IS - 5

ER -

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