The smolt run and postsmolt survival of Atlantic salmon, Salmo salar L., in relation to early summer water temperatures in the northern Baltic Sea
Abstract – The timing of the smolt migration of Atlantic salmon, Salmo salar L., was investigated during 1972–2002 in the Simojoki, a river flowing into the northern Baltic Sea. The onset of the smolt run was positively correlated with the river water temperature; a rise in water temperature above 1...
Published in: | Ecology of Freshwater Fish |
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crwiley:10.1111/j.1600-0633.2005.00079.x 2023-12-03T10:19:33+01:00 The smolt run and postsmolt survival of Atlantic salmon, Salmo salar L., in relation to early summer water temperatures in the northern Baltic Sea Jutila, E. Jokikokko, E. Julkunen, M. 2005 http://dx.doi.org/10.1111/j.1600-0633.2005.00079.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1600-0633.2005.00079.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1600-0633.2005.00079.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Ecology of Freshwater Fish volume 14, issue 1, page 69-78 ISSN 0906-6691 1600-0633 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2005 crwiley https://doi.org/10.1111/j.1600-0633.2005.00079.x 2023-11-09T14:04:36Z Abstract – The timing of the smolt migration of Atlantic salmon, Salmo salar L., was investigated during 1972–2002 in the Simojoki, a river flowing into the northern Baltic Sea. The onset of the smolt run was positively correlated with the river water temperature; a rise in water temperature above 10 °C being the main proximate environmental triggering factor. There was also a weaker correlation between the decreasing river discharge in the spring and the onset of the smolt migration. The duration of the main run was shorter in the years when the onset of the smolt run was delayed. No differences were found in the onset timing or in the duration of the smolt run between wild smolts and semi‐wild smolts released into the river as parr. A polynomial equation fitted to the annual data on the survival of Carlin‐tagged wild smolts and the sea surface temperature (SST) in June off the river mouth appeared to follow a dome‐shaped pattern. Survival was lower in cold early summers (SST <9 °C) than in those with an average SST (9–11.9 °C), and lower again, although not significantly, in warm early summers (SST ≥12 °C). Too low and probably also too a high water temperature in early summer could thus be one of the underlying reasons for the fluctuations observed in postsmolt survival in the Baltic Sea. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library (via Crossref) Simojoki ENVELOPE(25.050,25.050,65.617,65.617) Ecology of Freshwater Fish 14 1 69 78 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Jutila, E. Jokikokko, E. Julkunen, M. The smolt run and postsmolt survival of Atlantic salmon, Salmo salar L., in relation to early summer water temperatures in the northern Baltic Sea |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Abstract – The timing of the smolt migration of Atlantic salmon, Salmo salar L., was investigated during 1972–2002 in the Simojoki, a river flowing into the northern Baltic Sea. The onset of the smolt run was positively correlated with the river water temperature; a rise in water temperature above 10 °C being the main proximate environmental triggering factor. There was also a weaker correlation between the decreasing river discharge in the spring and the onset of the smolt migration. The duration of the main run was shorter in the years when the onset of the smolt run was delayed. No differences were found in the onset timing or in the duration of the smolt run between wild smolts and semi‐wild smolts released into the river as parr. A polynomial equation fitted to the annual data on the survival of Carlin‐tagged wild smolts and the sea surface temperature (SST) in June off the river mouth appeared to follow a dome‐shaped pattern. Survival was lower in cold early summers (SST <9 °C) than in those with an average SST (9–11.9 °C), and lower again, although not significantly, in warm early summers (SST ≥12 °C). Too low and probably also too a high water temperature in early summer could thus be one of the underlying reasons for the fluctuations observed in postsmolt survival in the Baltic Sea. |
format |
Article in Journal/Newspaper |
author |
Jutila, E. Jokikokko, E. Julkunen, M. |
author_facet |
Jutila, E. Jokikokko, E. Julkunen, M. |
author_sort |
Jutila, E. |
title |
The smolt run and postsmolt survival of Atlantic salmon, Salmo salar L., in relation to early summer water temperatures in the northern Baltic Sea |
title_short |
The smolt run and postsmolt survival of Atlantic salmon, Salmo salar L., in relation to early summer water temperatures in the northern Baltic Sea |
title_full |
The smolt run and postsmolt survival of Atlantic salmon, Salmo salar L., in relation to early summer water temperatures in the northern Baltic Sea |
title_fullStr |
The smolt run and postsmolt survival of Atlantic salmon, Salmo salar L., in relation to early summer water temperatures in the northern Baltic Sea |
title_full_unstemmed |
The smolt run and postsmolt survival of Atlantic salmon, Salmo salar L., in relation to early summer water temperatures in the northern Baltic Sea |
title_sort |
smolt run and postsmolt survival of atlantic salmon, salmo salar l., in relation to early summer water temperatures in the northern baltic sea |
publisher |
Wiley |
publishDate |
2005 |
url |
http://dx.doi.org/10.1111/j.1600-0633.2005.00079.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1600-0633.2005.00079.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1600-0633.2005.00079.x |
long_lat |
ENVELOPE(25.050,25.050,65.617,65.617) |
geographic |
Simojoki |
geographic_facet |
Simojoki |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Ecology of Freshwater Fish volume 14, issue 1, page 69-78 ISSN 0906-6691 1600-0633 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1600-0633.2005.00079.x |
container_title |
Ecology of Freshwater Fish |
container_volume |
14 |
container_issue |
1 |
container_start_page |
69 |
op_container_end_page |
78 |
_version_ |
1784266873310806016 |