Downstream migration of Atlantic salmon smolt at three German hydropower stations
Økland, F., Teichert, M.A.K., Thorstad, E.B., Havn, T.B., Heermann, L., Sæther, S.A., Diserud, O.H., Tambets, M., Hedger, R.D. & Borcherding, J. 2016. Downstream migration of Atlantic salmon smolt at three German hydropower stations. NINA Report 1203: 1-47. The aim of this study was to examine m...
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ftninstnf:oai:brage.nina.no:11250/2412774 2024-06-23T07:51:13+00:00 Downstream migration of Atlantic salmon smolt at three German hydropower stations Økland, Finn Teichert, Maxim A.K. Thorstad, Eva B. Havn, Torgeir B. Heermann, Lisa Sæther, Stein Are Diserud, Ola H. Tambets, Meelis Hedger, Richard D. Borcherding, Jost Germany, Nordrhein-Westfalen, Baden-Württemberg 2016-10-04 application/octet-stream http://hdl.handle.net/11250/2412774 eng eng NINA Rapport;1203 urn:isbn:978-82-426-2832-9 urn:issn:1504-3312 http://hdl.handle.net/11250/2412774 47 s. NINA Rapport Germany Nordrhein-Westfalen Baden-Württemberg River Rhine River Sieg River Kinzig River Weser River Diemel atlantic salmon Salmo salar salmon smolt downstream migration hydropower plant power station turbine dam bypass Archimedes screw turbine telemetry radio transmitter Research report 2016 ftninstnf 2024-06-07T03:57:56Z Økland, F., Teichert, M.A.K., Thorstad, E.B., Havn, T.B., Heermann, L., Sæther, S.A., Diserud, O.H., Tambets, M., Hedger, R.D. & Borcherding, J. 2016. Downstream migration of Atlantic salmon smolt at three German hydropower stations. NINA Report 1203: 1-47. The aim of this study was to examine migration routes and losses of Atlantic salmon smolt past three hydropower stations, which were the Unkelmühle (River Sieg), Gengenbach (River Kinzig), and Kuhlemühle (River Diemel) power stations. These three power stations represent the use of different technologies to reduce negative impact on downstream migrating fish. The study was performed by tagging 525 Atlantic salmon smolt with radio transmitters and recording their migration when passing the power stations. In 2015, the loss of downstream migrating smolt due to the power station was 12.8% at Unkelmühle and 3.1-6.3% at the power station in Gengenbach. This represents the percentage of smolt entering the power station area that were lost due to this being a power station instead of a free-flowing river. Immediate mortality for smolt that passed through the Archimedes screw turbine at Kuhlemühle was estimated at 0-8%. Results showed that also reservoirs upstream of power stations can be areas of high mortality. Of smolt entering the reservoir upstream of Unkelmühle, 7.2% and 17.1% (two study years) were lost due to this being a reservoir instead of a free-flowing river. The main reason was likely presence of more fish predators (i.e., larger fishes eating smolt) in the slowflowing reservoir compared to the free-flowing river stretches. © Norwegian Institute for Nature Research. The publication may be freely cited where the source is acknowledged Report Atlantic salmon Salmo salar Norwegian Institute for Nature Research: Brage NINA |
institution |
Open Polar |
collection |
Norwegian Institute for Nature Research: Brage NINA |
op_collection_id |
ftninstnf |
language |
English |
topic |
NINA Rapport Germany Nordrhein-Westfalen Baden-Württemberg River Rhine River Sieg River Kinzig River Weser River Diemel atlantic salmon Salmo salar salmon smolt downstream migration hydropower plant power station turbine dam bypass Archimedes screw turbine telemetry radio transmitter |
spellingShingle |
NINA Rapport Germany Nordrhein-Westfalen Baden-Württemberg River Rhine River Sieg River Kinzig River Weser River Diemel atlantic salmon Salmo salar salmon smolt downstream migration hydropower plant power station turbine dam bypass Archimedes screw turbine telemetry radio transmitter Økland, Finn Teichert, Maxim A.K. Thorstad, Eva B. Havn, Torgeir B. Heermann, Lisa Sæther, Stein Are Diserud, Ola H. Tambets, Meelis Hedger, Richard D. Borcherding, Jost Downstream migration of Atlantic salmon smolt at three German hydropower stations |
topic_facet |
NINA Rapport Germany Nordrhein-Westfalen Baden-Württemberg River Rhine River Sieg River Kinzig River Weser River Diemel atlantic salmon Salmo salar salmon smolt downstream migration hydropower plant power station turbine dam bypass Archimedes screw turbine telemetry radio transmitter |
description |
Økland, F., Teichert, M.A.K., Thorstad, E.B., Havn, T.B., Heermann, L., Sæther, S.A., Diserud, O.H., Tambets, M., Hedger, R.D. & Borcherding, J. 2016. Downstream migration of Atlantic salmon smolt at three German hydropower stations. NINA Report 1203: 1-47. The aim of this study was to examine migration routes and losses of Atlantic salmon smolt past three hydropower stations, which were the Unkelmühle (River Sieg), Gengenbach (River Kinzig), and Kuhlemühle (River Diemel) power stations. These three power stations represent the use of different technologies to reduce negative impact on downstream migrating fish. The study was performed by tagging 525 Atlantic salmon smolt with radio transmitters and recording their migration when passing the power stations. In 2015, the loss of downstream migrating smolt due to the power station was 12.8% at Unkelmühle and 3.1-6.3% at the power station in Gengenbach. This represents the percentage of smolt entering the power station area that were lost due to this being a power station instead of a free-flowing river. Immediate mortality for smolt that passed through the Archimedes screw turbine at Kuhlemühle was estimated at 0-8%. Results showed that also reservoirs upstream of power stations can be areas of high mortality. Of smolt entering the reservoir upstream of Unkelmühle, 7.2% and 17.1% (two study years) were lost due to this being a reservoir instead of a free-flowing river. The main reason was likely presence of more fish predators (i.e., larger fishes eating smolt) in the slowflowing reservoir compared to the free-flowing river stretches. © Norwegian Institute for Nature Research. The publication may be freely cited where the source is acknowledged |
format |
Report |
author |
Økland, Finn Teichert, Maxim A.K. Thorstad, Eva B. Havn, Torgeir B. Heermann, Lisa Sæther, Stein Are Diserud, Ola H. Tambets, Meelis Hedger, Richard D. Borcherding, Jost |
author_facet |
Økland, Finn Teichert, Maxim A.K. Thorstad, Eva B. Havn, Torgeir B. Heermann, Lisa Sæther, Stein Are Diserud, Ola H. Tambets, Meelis Hedger, Richard D. Borcherding, Jost |
author_sort |
Økland, Finn |
title |
Downstream migration of Atlantic salmon smolt at three German hydropower stations |
title_short |
Downstream migration of Atlantic salmon smolt at three German hydropower stations |
title_full |
Downstream migration of Atlantic salmon smolt at three German hydropower stations |
title_fullStr |
Downstream migration of Atlantic salmon smolt at three German hydropower stations |
title_full_unstemmed |
Downstream migration of Atlantic salmon smolt at three German hydropower stations |
title_sort |
downstream migration of atlantic salmon smolt at three german hydropower stations |
publishDate |
2016 |
url |
http://hdl.handle.net/11250/2412774 |
op_coverage |
Germany, Nordrhein-Westfalen, Baden-Württemberg |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
47 s. |
op_relation |
NINA Rapport;1203 urn:isbn:978-82-426-2832-9 urn:issn:1504-3312 http://hdl.handle.net/11250/2412774 |
_version_ |
1802642235457536000 |