Barriers against invasive crayfish species in natural waters and fish passes - Practical experience

The spread of non-indigenous crayfish species poses a threat to local populations of crayfish as well as to other fauna and flora across Europe and around the world. Several methods have been used in attempt to reduce their numbers and stop their further spread. Crayfish barriers are the best way to...

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Main Authors: Raphael Krieg, Alex King, Armin Zenker
Format: Article
Language:English
Published: Elsevier 2021-01-01
Series:Global Ecology and Conservation
Subjects:
Dam
Online Access:http://www.sciencedirect.com/science/article/pii/S2351989420309628
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spelling doaj-eab27ad292314c84ab909c5bf7c599c42021-01-28T04:08:37ZengElsevierGlobal Ecology and Conservation2351-98942021-01-0125e01421Barriers against invasive crayfish species in natural waters and fish passes - Practical experienceRaphael Krieg0Alex King1Armin Zenker2University of Applied Sciences and Arts Northwestern Switzerland, School of Life Sciences, Institute for Ecopreneurship, Hofackerstrasse 30, 4132, Muttenz, SwitzerlandUniversity of Applied Sciences and Arts Northwestern Switzerland, School of Life Sciences, Institute for Ecopreneurship, Hofackerstrasse 30, 4132, Muttenz, SwitzerlandCorresponding author.; University of Applied Sciences and Arts Northwestern Switzerland, School of Life Sciences, Institute for Ecopreneurship, Hofackerstrasse 30, 4132, Muttenz, SwitzerlandThe spread of non-indigenous crayfish species poses a threat to local populations of crayfish as well as to other fauna and flora across Europe and around the world. Several methods have been used in attempt to reduce their numbers and stop their further spread. Crayfish barriers are the best way to stop the non-anthropogenic spread of established invasive crayfish populations. Up to now there are very few published papers regarding crayfish barrier design and practical experience in construction. For the last seven years, we have optimised construction and functionality of crayfish barriers, tested various building materials and planned construction of many barriers across Switzerland. In this article, we highlight our experience, share the acquired knowledge and present the newest findings regarding considerations, which must be made when planning a barrier to stop the upstream movement of non-indigenous crayfish species. From our experience we conclude that crayfish barriers work in preventing the movement of invasive species if certain factors are taken into account. Barrier design and construction must be specific for each project, because the size of the watercourse, flow velocity, bank conditions, existing constructions and accessibility, all change the way a barrier should be set-up.http://www.sciencedirect.com/science/article/pii/S2351989420309628ContainmentSignal crayfishDamSpreadMigrationObstacles
collection DOAJ
language English
format Article
sources DOAJ
author Raphael Krieg
Alex King
Armin Zenker
spellingShingle Raphael Krieg
Alex King
Armin Zenker
Barriers against invasive crayfish species in natural waters and fish passes - Practical experience
Global Ecology and Conservation
Containment
Signal crayfish
Dam
Spread
Migration
Obstacles
author_facet Raphael Krieg
Alex King
Armin Zenker
author_sort Raphael Krieg
title Barriers against invasive crayfish species in natural waters and fish passes - Practical experience
title_short Barriers against invasive crayfish species in natural waters and fish passes - Practical experience
title_full Barriers against invasive crayfish species in natural waters and fish passes - Practical experience
title_fullStr Barriers against invasive crayfish species in natural waters and fish passes - Practical experience
title_full_unstemmed Barriers against invasive crayfish species in natural waters and fish passes - Practical experience
title_sort barriers against invasive crayfish species in natural waters and fish passes - practical experience
publisher Elsevier
series Global Ecology and Conservation
issn 2351-9894
publishDate 2021-01-01
description The spread of non-indigenous crayfish species poses a threat to local populations of crayfish as well as to other fauna and flora across Europe and around the world. Several methods have been used in attempt to reduce their numbers and stop their further spread. Crayfish barriers are the best way to stop the non-anthropogenic spread of established invasive crayfish populations. Up to now there are very few published papers regarding crayfish barrier design and practical experience in construction. For the last seven years, we have optimised construction and functionality of crayfish barriers, tested various building materials and planned construction of many barriers across Switzerland. In this article, we highlight our experience, share the acquired knowledge and present the newest findings regarding considerations, which must be made when planning a barrier to stop the upstream movement of non-indigenous crayfish species. From our experience we conclude that crayfish barriers work in preventing the movement of invasive species if certain factors are taken into account. Barrier design and construction must be specific for each project, because the size of the watercourse, flow velocity, bank conditions, existing constructions and accessibility, all change the way a barrier should be set-up.
topic Containment
Signal crayfish
Dam
Spread
Migration
Obstacles
url http://www.sciencedirect.com/science/article/pii/S2351989420309628
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