Impacts of a weir and power station on downstream migrating Atlantic salmon smolts in a German river
Weirs are barriers built across rivers for a wide range of other purposes than hydropower production. Like hydropower installations, weirs can negatively impact fish migrations. Downstream migration and mortality of Atlantic salmon smolts were studied during passage of a weir and power station by ta...
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Online Access: | https://doi.org/10.1002/rra.3590 http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/9309 |
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ftsubggeo:oai:e-docs.geo-leo.de:11858/9309 2023-05-15T15:31:08+02:00 Impacts of a weir and power station on downstream migrating Atlantic salmon smolts in a German river Havn, Torgeir B. Thorstad, Eva B. Borcherding, Jost Heermann, Lisa Teichert, Maxim A. K. Ingendahl, Detlev Tambets, Meelis Sæther, Stein Are Økland, Finn 2020 https://doi.org/10.1002/rra.3590 http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/9309 eng eng doi:10.1002/rra.3590 http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/9309 This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. CC-BY ddc:551.483 downstream migration migration speed mortality power station radio telemetry salmon smolt weir doc-type:article 2020 ftsubggeo https://doi.org/10.1002/rra.3590 2022-11-09T06:51:40Z Weirs are barriers built across rivers for a wide range of other purposes than hydropower production. Like hydropower installations, weirs can negatively impact fish migrations. Downstream migration and mortality of Atlantic salmon smolts were studied during passage of a weir and power station by tagging 227 smolts with radio transmitters. Extra loss of smolts due to the weir and adjacent reservoir was 5.2%. Mortality was likely related to physical damage imposed to the smolts and/or increased predation risk. Extra loss of smolts did not differ between the weir and the power station (7.2%). Migration speeds were reduced at the power station but not at the weir. We conclude that mortality at one power station site may differ considerably among years, because the mortality was more than four times higher in a previous year than in this study. Increased river discharge seemed to decrease mortality and increase migration speeds at the power station. Article in Journal/Newspaper Atlantic salmon GEO-LEOe-docs (FID GEO) Weir ENVELOPE(177.167,177.167,-84.983,-84.983) River Research and Applications 36 5 784 796 |
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Open Polar |
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GEO-LEOe-docs (FID GEO) |
op_collection_id |
ftsubggeo |
language |
English |
topic |
ddc:551.483 downstream migration migration speed mortality power station radio telemetry salmon smolt weir |
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ddc:551.483 downstream migration migration speed mortality power station radio telemetry salmon smolt weir Havn, Torgeir B. Thorstad, Eva B. Borcherding, Jost Heermann, Lisa Teichert, Maxim A. K. Ingendahl, Detlev Tambets, Meelis Sæther, Stein Are Økland, Finn Impacts of a weir and power station on downstream migrating Atlantic salmon smolts in a German river |
topic_facet |
ddc:551.483 downstream migration migration speed mortality power station radio telemetry salmon smolt weir |
description |
Weirs are barriers built across rivers for a wide range of other purposes than hydropower production. Like hydropower installations, weirs can negatively impact fish migrations. Downstream migration and mortality of Atlantic salmon smolts were studied during passage of a weir and power station by tagging 227 smolts with radio transmitters. Extra loss of smolts due to the weir and adjacent reservoir was 5.2%. Mortality was likely related to physical damage imposed to the smolts and/or increased predation risk. Extra loss of smolts did not differ between the weir and the power station (7.2%). Migration speeds were reduced at the power station but not at the weir. We conclude that mortality at one power station site may differ considerably among years, because the mortality was more than four times higher in a previous year than in this study. Increased river discharge seemed to decrease mortality and increase migration speeds at the power station. |
format |
Article in Journal/Newspaper |
author |
Havn, Torgeir B. Thorstad, Eva B. Borcherding, Jost Heermann, Lisa Teichert, Maxim A. K. Ingendahl, Detlev Tambets, Meelis Sæther, Stein Are Økland, Finn |
author_facet |
Havn, Torgeir B. Thorstad, Eva B. Borcherding, Jost Heermann, Lisa Teichert, Maxim A. K. Ingendahl, Detlev Tambets, Meelis Sæther, Stein Are Økland, Finn |
author_sort |
Havn, Torgeir B. |
title |
Impacts of a weir and power station on downstream migrating Atlantic salmon smolts in a German river |
title_short |
Impacts of a weir and power station on downstream migrating Atlantic salmon smolts in a German river |
title_full |
Impacts of a weir and power station on downstream migrating Atlantic salmon smolts in a German river |
title_fullStr |
Impacts of a weir and power station on downstream migrating Atlantic salmon smolts in a German river |
title_full_unstemmed |
Impacts of a weir and power station on downstream migrating Atlantic salmon smolts in a German river |
title_sort |
impacts of a weir and power station on downstream migrating atlantic salmon smolts in a german river |
publishDate |
2020 |
url |
https://doi.org/10.1002/rra.3590 http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/9309 |
long_lat |
ENVELOPE(177.167,177.167,-84.983,-84.983) |
geographic |
Weir |
geographic_facet |
Weir |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_relation |
doi:10.1002/rra.3590 http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/9309 |
op_rights |
This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1002/rra.3590 |
container_title |
River Research and Applications |
container_volume |
36 |
container_issue |
5 |
container_start_page |
784 |
op_container_end_page |
796 |
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1766361637074239488 |