| 报告题名: | Downstream migration of Atlantic salmon smolt at three German hydropower stations |
| 作者: | 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
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| 出版年: | 2016
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| 发表日期: | 2016-10-04
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| 国家: | 挪威
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| 语种: | 英语
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| 英文关键词: | 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
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| 中文主题词: | 死亡率
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| 主题词: | MORTALITY
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| 英文摘要: | 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. |
| URL: | https://brage.bibsys.no/xmlui/bitstream/handle/11250/2412774/1203.pdf?sequence=1&isAllowed=y
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| 资源类型: | 研究报告
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/28853
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| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| File Name/ File Size |
Content Type |
Version |
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| 1203.pdf（6241KB） | 研究报告 | -- | 开放获取 | | View
Download
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| Recommended Citation: | |
Økland, Finn,Teichert, Maxim A.K.,Thorstad, Eva B.,et al. Downstream migration of Atlantic salmon smolt at three German hydropower stations. 2016-01-01.
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