Environmental and anthropogenic correlates of migratory speeds among Atlantic salmon smolts
Dams, weirs, and hydropower facilities are often cited as migratory barriers which impart significant reductions in fitness among migratory fish species. Even where upstream and downstream passage options are available, barrier passage can still often result in energetic or physical costs which comp...
Published in: | River Research and Applications |
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Format: | Article in Journal/Newspaper |
Language: | English |
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John Wiley & Sons Inc.
2021
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Online Access: | https://lup.lub.lu.se/record/522ff9b2-5afa-480d-87c1-6bb90ef4f476 https://doi.org/10.1002/rra.3760 |
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ftulundlup:oai:lup.lub.lu.se:522ff9b2-5afa-480d-87c1-6bb90ef4f476 2023-05-15T15:31:31+02:00 Environmental and anthropogenic correlates of migratory speeds among Atlantic salmon smolts Harbicht, Andrew B. Nilsson, P. Anders Österling, Martin Calles, Olle 2021 https://lup.lub.lu.se/record/522ff9b2-5afa-480d-87c1-6bb90ef4f476 https://doi.org/10.1002/rra.3760 eng eng John Wiley & Sons Inc. https://lup.lub.lu.se/record/522ff9b2-5afa-480d-87c1-6bb90ef4f476 http://dx.doi.org/10.1002/rra.3760 scopus:85098069592 River Research and Applications; 37(3), pp 358-372 (2021) ISSN: 1535-1459 Ecology anthropogenic delay migration barriers Salmo salar smolt time-to-event analysis contributiontojournal/article info:eu-repo/semantics/article text 2021 ftulundlup https://doi.org/10.1002/rra.3760 2023-02-01T23:40:08Z Dams, weirs, and hydropower facilities are often cited as migratory barriers which impart significant reductions in fitness among migratory fish species. Even where upstream and downstream passage options are available, barrier passage can still often result in energetic or physical costs which compound delays or cause mortality. Past studies have identified variables associated with such fitness reductions, though few examine their effects in the context of the whole river scale. To this end, we assessed the migratory rates and downstream passage of radio-tagged Atlantic salmon (Salmo salar) smolts through nine river sections (including two reservoir sections and one dammed section) along a 20 km stretch of river. Migration stoppages were not found to be elevated in reservoir or dammed sections, while migration rates were best described by physical river properties (width), biological traits (smolt total length), and seasonal variables (diel period) rather than anthropogenic factors. These results suggest the negative effect of reservoirs may primarily be due to their influence on river width and may be negligible when width is largely unaffected by an impoundment. Similarly, spilling water during fish migrations as a mitigative measure appears to make delays negligible. These conditions and actions may not completely marginalize the effect of dams, however, as a negative trend was still observed resulting from passage effects at the dam. Article in Journal/Newspaper Atlantic salmon Salmo salar Lund University Publications (LUP) River Research and Applications 37 3 358 372 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Ecology anthropogenic delay migration barriers Salmo salar smolt time-to-event analysis |
spellingShingle |
Ecology anthropogenic delay migration barriers Salmo salar smolt time-to-event analysis Harbicht, Andrew B. Nilsson, P. Anders Österling, Martin Calles, Olle Environmental and anthropogenic correlates of migratory speeds among Atlantic salmon smolts |
topic_facet |
Ecology anthropogenic delay migration barriers Salmo salar smolt time-to-event analysis |
description |
Dams, weirs, and hydropower facilities are often cited as migratory barriers which impart significant reductions in fitness among migratory fish species. Even where upstream and downstream passage options are available, barrier passage can still often result in energetic or physical costs which compound delays or cause mortality. Past studies have identified variables associated with such fitness reductions, though few examine their effects in the context of the whole river scale. To this end, we assessed the migratory rates and downstream passage of radio-tagged Atlantic salmon (Salmo salar) smolts through nine river sections (including two reservoir sections and one dammed section) along a 20 km stretch of river. Migration stoppages were not found to be elevated in reservoir or dammed sections, while migration rates were best described by physical river properties (width), biological traits (smolt total length), and seasonal variables (diel period) rather than anthropogenic factors. These results suggest the negative effect of reservoirs may primarily be due to their influence on river width and may be negligible when width is largely unaffected by an impoundment. Similarly, spilling water during fish migrations as a mitigative measure appears to make delays negligible. These conditions and actions may not completely marginalize the effect of dams, however, as a negative trend was still observed resulting from passage effects at the dam. |
format |
Article in Journal/Newspaper |
author |
Harbicht, Andrew B. Nilsson, P. Anders Österling, Martin Calles, Olle |
author_facet |
Harbicht, Andrew B. Nilsson, P. Anders Österling, Martin Calles, Olle |
author_sort |
Harbicht, Andrew B. |
title |
Environmental and anthropogenic correlates of migratory speeds among Atlantic salmon smolts |
title_short |
Environmental and anthropogenic correlates of migratory speeds among Atlantic salmon smolts |
title_full |
Environmental and anthropogenic correlates of migratory speeds among Atlantic salmon smolts |
title_fullStr |
Environmental and anthropogenic correlates of migratory speeds among Atlantic salmon smolts |
title_full_unstemmed |
Environmental and anthropogenic correlates of migratory speeds among Atlantic salmon smolts |
title_sort |
environmental and anthropogenic correlates of migratory speeds among atlantic salmon smolts |
publisher |
John Wiley & Sons Inc. |
publishDate |
2021 |
url |
https://lup.lub.lu.se/record/522ff9b2-5afa-480d-87c1-6bb90ef4f476 https://doi.org/10.1002/rra.3760 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
River Research and Applications; 37(3), pp 358-372 (2021) ISSN: 1535-1459 |
op_relation |
https://lup.lub.lu.se/record/522ff9b2-5afa-480d-87c1-6bb90ef4f476 http://dx.doi.org/10.1002/rra.3760 scopus:85098069592 |
op_doi |
https://doi.org/10.1002/rra.3760 |
container_title |
River Research and Applications |
container_volume |
37 |
container_issue |
3 |
container_start_page |
358 |
op_container_end_page |
372 |
_version_ |
1766362046640685056 |