Mortality of silver eel (Anguilla anguilla) migrating downstream through a small hydroelectric plant on the Drawa River in northern Poland
The European eel, Anguilla anguilla L., is an endangered species. Barriers to its downstream spawning migration are one of the greatest threats this species faces. There are hundreds of hydroelectric plants (HEP) on rivers in Poland (> 600), and thousands throughout Europe. Eel that pass through...
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ftdoajarticles:oai:doaj.org/article:605650c340db496f8ef4920a6f28d640 2023-05-15T13:27:05+02:00 Mortality of silver eel (Anguilla anguilla) migrating downstream through a small hydroelectric plant on the Drawa River in northern Poland Dębowski Piotr Bernaś Rafał Skóra Michał Morzuch Jacek 2016-06-01T00:00:00Z https://doi.org/10.1515/aopf-2016-0008 https://doaj.org/article/605650c340db496f8ef4920a6f28d640 EN eng Sciendo https://doi.org/10.1515/aopf-2016-0008 https://doaj.org/toc/2083-6139 2083-6139 doi:10.1515/aopf-2016-0008 https://doaj.org/article/605650c340db496f8ef4920a6f28d640 Archives of Polish Fisheries, Vol 24, Iss 2, Pp 69-75 (2016) eel hydroelectric plant mortality spawning migration Aquaculture. Fisheries. Angling SH1-691 article 2016 ftdoajarticles https://doi.org/10.1515/aopf-2016-0008 2022-12-31T05:50:31Z The European eel, Anguilla anguilla L., is an endangered species. Barriers to its downstream spawning migration are one of the greatest threats this species faces. There are hundreds of hydroelectric plants (HEP) on rivers in Poland (> 600), and thousands throughout Europe. Eel that pass through HEP turbines as they migrate downstream suffer high mortality, but this depends mainly on local and technical conditions. Silver eel mortality was estimated and the possibility of the fish bypassing the turbines was studied between November 2013 and June 2014 at a typical HEP in northern Poland. Two telemetry methods were used with 49 eel: passive integrated transponder (PIT) system and acoustic telemetry. Fifty five percent of eel migrated downstream in fall 2013, soon after their release, and 45% migrated the next spring. The eel did not use the fish passes designed for upstream migration; thus, they were forced to go through the turbines, which resulted in 55% mortality. HEPs cause interruptions and delays in eel spawning migrations and are responsible for high eel mortality. This can make implementing an eel restitution plan difficult or even impossible in river systems with many barriers. Article in Journal/Newspaper Anguilla anguilla European eel Directory of Open Access Journals: DOAJ Articles Archives of Polish Fisheries 24 2 69 75 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
eel hydroelectric plant mortality spawning migration Aquaculture. Fisheries. Angling SH1-691 |
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eel hydroelectric plant mortality spawning migration Aquaculture. Fisheries. Angling SH1-691 Dębowski Piotr Bernaś Rafał Skóra Michał Morzuch Jacek Mortality of silver eel (Anguilla anguilla) migrating downstream through a small hydroelectric plant on the Drawa River in northern Poland |
topic_facet |
eel hydroelectric plant mortality spawning migration Aquaculture. Fisheries. Angling SH1-691 |
description |
The European eel, Anguilla anguilla L., is an endangered species. Barriers to its downstream spawning migration are one of the greatest threats this species faces. There are hundreds of hydroelectric plants (HEP) on rivers in Poland (> 600), and thousands throughout Europe. Eel that pass through HEP turbines as they migrate downstream suffer high mortality, but this depends mainly on local and technical conditions. Silver eel mortality was estimated and the possibility of the fish bypassing the turbines was studied between November 2013 and June 2014 at a typical HEP in northern Poland. Two telemetry methods were used with 49 eel: passive integrated transponder (PIT) system and acoustic telemetry. Fifty five percent of eel migrated downstream in fall 2013, soon after their release, and 45% migrated the next spring. The eel did not use the fish passes designed for upstream migration; thus, they were forced to go through the turbines, which resulted in 55% mortality. HEPs cause interruptions and delays in eel spawning migrations and are responsible for high eel mortality. This can make implementing an eel restitution plan difficult or even impossible in river systems with many barriers. |
format |
Article in Journal/Newspaper |
author |
Dębowski Piotr Bernaś Rafał Skóra Michał Morzuch Jacek |
author_facet |
Dębowski Piotr Bernaś Rafał Skóra Michał Morzuch Jacek |
author_sort |
Dębowski Piotr |
title |
Mortality of silver eel (Anguilla anguilla) migrating downstream through a small hydroelectric plant on the Drawa River in northern Poland |
title_short |
Mortality of silver eel (Anguilla anguilla) migrating downstream through a small hydroelectric plant on the Drawa River in northern Poland |
title_full |
Mortality of silver eel (Anguilla anguilla) migrating downstream through a small hydroelectric plant on the Drawa River in northern Poland |
title_fullStr |
Mortality of silver eel (Anguilla anguilla) migrating downstream through a small hydroelectric plant on the Drawa River in northern Poland |
title_full_unstemmed |
Mortality of silver eel (Anguilla anguilla) migrating downstream through a small hydroelectric plant on the Drawa River in northern Poland |
title_sort |
mortality of silver eel (anguilla anguilla) migrating downstream through a small hydroelectric plant on the drawa river in northern poland |
publisher |
Sciendo |
publishDate |
2016 |
url |
https://doi.org/10.1515/aopf-2016-0008 https://doaj.org/article/605650c340db496f8ef4920a6f28d640 |
genre |
Anguilla anguilla European eel |
genre_facet |
Anguilla anguilla European eel |
op_source |
Archives of Polish Fisheries, Vol 24, Iss 2, Pp 69-75 (2016) |
op_relation |
https://doi.org/10.1515/aopf-2016-0008 https://doaj.org/toc/2083-6139 2083-6139 doi:10.1515/aopf-2016-0008 https://doaj.org/article/605650c340db496f8ef4920a6f28d640 |
op_doi |
https://doi.org/10.1515/aopf-2016-0008 |
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Archives of Polish Fisheries |
container_volume |
24 |
container_issue |
2 |
container_start_page |
69 |
op_container_end_page |
75 |
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