Migration of landlocked brown trout in two Scandinavian streams as revealed from trap data
Abstract – Anthropogenic barriers that may interfere or prevent fish migration are commonly found in streams throughout the distribution of salmonids. Construction of fish passages in streams is a common solution to this problem. However, the goal with fish passages is often, at least in Scandinavia...
Published in: | Ecology of Freshwater Fish |
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crwiley:10.1111/j.1600-0633.2004.00058.x 2024-09-15T17:56:25+00:00 Migration of landlocked brown trout in two Scandinavian streams as revealed from trap data Carlsson, J. Aarestrup, K. Nordwall, F. Näslund, I. Eriksson, T. Carlsson, J. E. L. 2004 http://dx.doi.org/10.1111/j.1600-0633.2004.00058.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1600-0633.2004.00058.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1600-0633.2004.00058.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Ecology of Freshwater Fish volume 13, issue 3, page 161-167 ISSN 0906-6691 1600-0633 journal-article 2004 crwiley https://doi.org/10.1111/j.1600-0633.2004.00058.x 2024-07-25T04:21:57Z Abstract – Anthropogenic barriers that may interfere or prevent fish migration are commonly found in streams throughout the distribution of salmonids. Construction of fish passages in streams is a common solution to this problem. However, the goal with fish passages is often, at least in Scandinavia, to allow Atlantic salmon ( Salmo salar L.) and migratory brown trout ( S. trutta L.) to get access to spawning areas above these barriers. Hence, the fish passages may often only be open during the spawning migration of salmonids (late summer to autumn). We present data, on wild brown trout migration, from two trapping systems in two Scandinavian streams showing that intra‐ and interstream migrations are common throughout the summer and autumn. Moreover, differences in size were found between trap‐caught trout and electrofished trout where trapped trout were generally larger than electrofished trout. We suggest that the current regime with fish passages only open parts of the year can have negative effects on populations by depriving trout from the possibility to perform migrations throughout the year. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Ecology of Freshwater Fish 13 3 161 167 |
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Wiley Online Library |
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English |
description |
Abstract – Anthropogenic barriers that may interfere or prevent fish migration are commonly found in streams throughout the distribution of salmonids. Construction of fish passages in streams is a common solution to this problem. However, the goal with fish passages is often, at least in Scandinavia, to allow Atlantic salmon ( Salmo salar L.) and migratory brown trout ( S. trutta L.) to get access to spawning areas above these barriers. Hence, the fish passages may often only be open during the spawning migration of salmonids (late summer to autumn). We present data, on wild brown trout migration, from two trapping systems in two Scandinavian streams showing that intra‐ and interstream migrations are common throughout the summer and autumn. Moreover, differences in size were found between trap‐caught trout and electrofished trout where trapped trout were generally larger than electrofished trout. We suggest that the current regime with fish passages only open parts of the year can have negative effects on populations by depriving trout from the possibility to perform migrations throughout the year. |
format |
Article in Journal/Newspaper |
author |
Carlsson, J. Aarestrup, K. Nordwall, F. Näslund, I. Eriksson, T. Carlsson, J. E. L. |
spellingShingle |
Carlsson, J. Aarestrup, K. Nordwall, F. Näslund, I. Eriksson, T. Carlsson, J. E. L. Migration of landlocked brown trout in two Scandinavian streams as revealed from trap data |
author_facet |
Carlsson, J. Aarestrup, K. Nordwall, F. Näslund, I. Eriksson, T. Carlsson, J. E. L. |
author_sort |
Carlsson, J. |
title |
Migration of landlocked brown trout in two Scandinavian streams as revealed from trap data |
title_short |
Migration of landlocked brown trout in two Scandinavian streams as revealed from trap data |
title_full |
Migration of landlocked brown trout in two Scandinavian streams as revealed from trap data |
title_fullStr |
Migration of landlocked brown trout in two Scandinavian streams as revealed from trap data |
title_full_unstemmed |
Migration of landlocked brown trout in two Scandinavian streams as revealed from trap data |
title_sort |
migration of landlocked brown trout in two scandinavian streams as revealed from trap data |
publisher |
Wiley |
publishDate |
2004 |
url |
http://dx.doi.org/10.1111/j.1600-0633.2004.00058.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1600-0633.2004.00058.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1600-0633.2004.00058.x |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Ecology of Freshwater Fish volume 13, issue 3, page 161-167 ISSN 0906-6691 1600-0633 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1600-0633.2004.00058.x |
container_title |
Ecology of Freshwater Fish |
container_volume |
13 |
container_issue |
3 |
container_start_page |
161 |
op_container_end_page |
167 |
_version_ |
1810432613112872960 |