Using eDNA Metabarcoding to Monitor Changes in Fish Community Composition After Barrier Removal
Artificial instream barriers are a major cause of habitat fragmentation that reduce population connectivity and gene flow by limiting fish movements. To mitigate their impacts, obsolete barriers are increasingly been removed worldwide, but few barrier removal projects are monitored. We employed a po...
Published in: | Frontiers in Ecology and Evolution |
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Online Access: | http://dx.doi.org/10.3389/fevo.2021.629217 https://www.frontiersin.org/articles/10.3389/fevo.2021.629217/full |
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crfrontiers:10.3389/fevo.2021.629217 2024-09-30T14:22:39+00:00 Using eDNA Metabarcoding to Monitor Changes in Fish Community Composition After Barrier Removal Muha, Teja P. Rodriguez-Barreto, Deiene O'Rorke, Richard Garcia de Leaniz, Carlos Consuegra, Sofia 2021 http://dx.doi.org/10.3389/fevo.2021.629217 https://www.frontiersin.org/articles/10.3389/fevo.2021.629217/full unknown Frontiers Media SA https://creativecommons.org/licenses/by/4.0/ Frontiers in Ecology and Evolution volume 9 ISSN 2296-701X journal-article 2021 crfrontiers https://doi.org/10.3389/fevo.2021.629217 2024-09-03T04:04:08Z Artificial instream barriers are a major cause of habitat fragmentation that reduce population connectivity and gene flow by limiting fish movements. To mitigate their impacts, obsolete barriers are increasingly been removed worldwide, but few barrier removal projects are monitored. We employed a powerful Before-After-Downstream-Upstream (BADU) approach using environmental DNA (eDNA) metabarcoding to examine the effects on fish community composition of removing a weir in the river Lugg (England) that had been suggested to have a detrimental effect on salmonid migration. We found no change in fish community diversity or relative abundance after the removal above or below the weir, but detected an important effect of sampling season, likely related to the species' life cycles. eDNA detected nine fish species that were also identified by electrofishing sampling and one additional species ( Anguilla anguilla ) that was missed by traditional surveys. Our results suggest that monitoring of barrier removal projects should be carried out to ensure that any ecological benefits are properly documented and that eDNA metabarcoding is a sensitive technique to monitor the effects of barrier removal. Article in Journal/Newspaper Anguilla anguilla Frontiers (Publisher) Lugg ENVELOPE(64.155,64.155,-71.241,-71.241) Weir ENVELOPE(177.167,177.167,-84.983,-84.983) Frontiers in Ecology and Evolution 9 |
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Artificial instream barriers are a major cause of habitat fragmentation that reduce population connectivity and gene flow by limiting fish movements. To mitigate their impacts, obsolete barriers are increasingly been removed worldwide, but few barrier removal projects are monitored. We employed a powerful Before-After-Downstream-Upstream (BADU) approach using environmental DNA (eDNA) metabarcoding to examine the effects on fish community composition of removing a weir in the river Lugg (England) that had been suggested to have a detrimental effect on salmonid migration. We found no change in fish community diversity or relative abundance after the removal above or below the weir, but detected an important effect of sampling season, likely related to the species' life cycles. eDNA detected nine fish species that were also identified by electrofishing sampling and one additional species ( Anguilla anguilla ) that was missed by traditional surveys. Our results suggest that monitoring of barrier removal projects should be carried out to ensure that any ecological benefits are properly documented and that eDNA metabarcoding is a sensitive technique to monitor the effects of barrier removal. |
format |
Article in Journal/Newspaper |
author |
Muha, Teja P. Rodriguez-Barreto, Deiene O'Rorke, Richard Garcia de Leaniz, Carlos Consuegra, Sofia |
spellingShingle |
Muha, Teja P. Rodriguez-Barreto, Deiene O'Rorke, Richard Garcia de Leaniz, Carlos Consuegra, Sofia Using eDNA Metabarcoding to Monitor Changes in Fish Community Composition After Barrier Removal |
author_facet |
Muha, Teja P. Rodriguez-Barreto, Deiene O'Rorke, Richard Garcia de Leaniz, Carlos Consuegra, Sofia |
author_sort |
Muha, Teja P. |
title |
Using eDNA Metabarcoding to Monitor Changes in Fish Community Composition After Barrier Removal |
title_short |
Using eDNA Metabarcoding to Monitor Changes in Fish Community Composition After Barrier Removal |
title_full |
Using eDNA Metabarcoding to Monitor Changes in Fish Community Composition After Barrier Removal |
title_fullStr |
Using eDNA Metabarcoding to Monitor Changes in Fish Community Composition After Barrier Removal |
title_full_unstemmed |
Using eDNA Metabarcoding to Monitor Changes in Fish Community Composition After Barrier Removal |
title_sort |
using edna metabarcoding to monitor changes in fish community composition after barrier removal |
publisher |
Frontiers Media SA |
publishDate |
2021 |
url |
http://dx.doi.org/10.3389/fevo.2021.629217 https://www.frontiersin.org/articles/10.3389/fevo.2021.629217/full |
long_lat |
ENVELOPE(64.155,64.155,-71.241,-71.241) ENVELOPE(177.167,177.167,-84.983,-84.983) |
geographic |
Lugg Weir |
geographic_facet |
Lugg Weir |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_source |
Frontiers in Ecology and Evolution volume 9 ISSN 2296-701X |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/fevo.2021.629217 |
container_title |
Frontiers in Ecology and Evolution |
container_volume |
9 |
_version_ |
1811634988408373248 |