Invasion dynamics of a fish-free landscape by brown trout (Salmo trutta).
Metapopulation dynamics over the course of an invasion are usually difficult to grasp because they require large and reliable data collection, often unavailable. The invasion of the fish-free freshwater ecosystems of the remote sub-Antarctic Kerguelen Islands following man-made introductions of brow...
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2013
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Online Access: | https://scholia.toolforge.org/work/Q30664169 http://www.wikidata.org/entity/Q30664169 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3749212 https://doi.org/10.1371/JOURNAL.PONE.0071052 |
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ftenkore:wikidata-Q30664169 2024-01-07T09:40:07+01:00 Invasion dynamics of a fish-free landscape by brown trout (Salmo trutta). Labonne, Jacques Vignon, Matthias Prévost, Etienne Lecomte, Frédéric Dodson, Julian J Kaeuffer, Renaud Aymes, Jean-Christophe Jarry, Marc Gaudin, Philippe Davaine, Patrick Beall, Edward 2013-08-21 https://scholia.toolforge.org/work/Q30664169 http://www.wikidata.org/entity/Q30664169 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3749212 https://doi.org/10.1371/JOURNAL.PONE.0071052 en eng Public Library of Science (PLoS) https://scholia.toolforge.org/work/Q30664169 http://www.wikidata.org/entity/Q30664169 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3749212 doi:10.1371/JOURNAL.PONE.0071052 http://creativecommons.org/licenses/by/4.0/ propagule pressure hypothesis wikidata.org/entity/Q110620464 hypothesis:propagule pressure hypothesis hypothesis:wikidata.org/entity/Q110620464 Salmo trutta aquatic invasion invasive species invasion dynamics journal article 2013 ftenkore https://doi.org/10.1371/JOURNAL.PONE.0071052 2023-12-11T19:24:51Z Metapopulation dynamics over the course of an invasion are usually difficult to grasp because they require large and reliable data collection, often unavailable. The invasion of the fish-free freshwater ecosystems of the remote sub-Antarctic Kerguelen Islands following man-made introductions of brown trout (Salmo trutta) in the 1950's is an exception to this rule. Benefiting from a full long term environmental research monitoring of the invasion, we built a Bayesian dynamic metapopulation model to analyze the invasion dynamics of 85 river systems over 51 years. The model accounted for patch size (river length and connections to lakes), alternative dispersal pathways between rivers, temporal trends in dynamics, and uncertainty in colonization date. The results show that the model correctly represents the observed pattern of invasion, especially if we assume a coastal dispersal pathway between patches. Landscape attributes such as patch size influenced the colonization function, but had no effect on propagule pressure. Independently from patch size and distance between patches, propagule pressure and colonization function were not constant through time. Propagule pressure increased over the course of colonization, whereas the colonization function decreased, conditional on propagule pressure. The resulting pattern of this antagonistic interplay is an initial rapid invasion phase followed by a strong decrease in the invasion rate. These temporal trends may be due to either adaptive processes or environmental gradients encountered along the colonization front. It was not possible to distinguish these two hypotheses. Because invasibility of Kerguelen Is. freshwater ecosystems is very high due to the lack of a pre-existing fish fauna and minimal human interference, our estimates of invasion dynamics represent a blueprint for the potential of brown trout invasiveness in pristine environments. Our conclusions shed light on the future of polar regions where, because of climate change, fish-free ecosystems become ... Article in Journal/Newspaper Antarc* Antarctic Kerguelen Islands enKORE project Antarctic Kerguelen Kerguelen Islands PLoS ONE 8 8 e71052 |
institution |
Open Polar |
collection |
enKORE project |
op_collection_id |
ftenkore |
language |
English |
topic |
propagule pressure hypothesis wikidata.org/entity/Q110620464 hypothesis:propagule pressure hypothesis hypothesis:wikidata.org/entity/Q110620464 Salmo trutta aquatic invasion invasive species invasion dynamics |
spellingShingle |
propagule pressure hypothesis wikidata.org/entity/Q110620464 hypothesis:propagule pressure hypothesis hypothesis:wikidata.org/entity/Q110620464 Salmo trutta aquatic invasion invasive species invasion dynamics Labonne, Jacques Vignon, Matthias Prévost, Etienne Lecomte, Frédéric Dodson, Julian J Kaeuffer, Renaud Aymes, Jean-Christophe Jarry, Marc Gaudin, Philippe Davaine, Patrick Beall, Edward Invasion dynamics of a fish-free landscape by brown trout (Salmo trutta). |
topic_facet |
propagule pressure hypothesis wikidata.org/entity/Q110620464 hypothesis:propagule pressure hypothesis hypothesis:wikidata.org/entity/Q110620464 Salmo trutta aquatic invasion invasive species invasion dynamics |
description |
Metapopulation dynamics over the course of an invasion are usually difficult to grasp because they require large and reliable data collection, often unavailable. The invasion of the fish-free freshwater ecosystems of the remote sub-Antarctic Kerguelen Islands following man-made introductions of brown trout (Salmo trutta) in the 1950's is an exception to this rule. Benefiting from a full long term environmental research monitoring of the invasion, we built a Bayesian dynamic metapopulation model to analyze the invasion dynamics of 85 river systems over 51 years. The model accounted for patch size (river length and connections to lakes), alternative dispersal pathways between rivers, temporal trends in dynamics, and uncertainty in colonization date. The results show that the model correctly represents the observed pattern of invasion, especially if we assume a coastal dispersal pathway between patches. Landscape attributes such as patch size influenced the colonization function, but had no effect on propagule pressure. Independently from patch size and distance between patches, propagule pressure and colonization function were not constant through time. Propagule pressure increased over the course of colonization, whereas the colonization function decreased, conditional on propagule pressure. The resulting pattern of this antagonistic interplay is an initial rapid invasion phase followed by a strong decrease in the invasion rate. These temporal trends may be due to either adaptive processes or environmental gradients encountered along the colonization front. It was not possible to distinguish these two hypotheses. Because invasibility of Kerguelen Is. freshwater ecosystems is very high due to the lack of a pre-existing fish fauna and minimal human interference, our estimates of invasion dynamics represent a blueprint for the potential of brown trout invasiveness in pristine environments. Our conclusions shed light on the future of polar regions where, because of climate change, fish-free ecosystems become ... |
format |
Article in Journal/Newspaper |
author |
Labonne, Jacques Vignon, Matthias Prévost, Etienne Lecomte, Frédéric Dodson, Julian J Kaeuffer, Renaud Aymes, Jean-Christophe Jarry, Marc Gaudin, Philippe Davaine, Patrick Beall, Edward |
author_facet |
Labonne, Jacques Vignon, Matthias Prévost, Etienne Lecomte, Frédéric Dodson, Julian J Kaeuffer, Renaud Aymes, Jean-Christophe Jarry, Marc Gaudin, Philippe Davaine, Patrick Beall, Edward |
author_sort |
Labonne, Jacques |
title |
Invasion dynamics of a fish-free landscape by brown trout (Salmo trutta). |
title_short |
Invasion dynamics of a fish-free landscape by brown trout (Salmo trutta). |
title_full |
Invasion dynamics of a fish-free landscape by brown trout (Salmo trutta). |
title_fullStr |
Invasion dynamics of a fish-free landscape by brown trout (Salmo trutta). |
title_full_unstemmed |
Invasion dynamics of a fish-free landscape by brown trout (Salmo trutta). |
title_sort |
invasion dynamics of a fish-free landscape by brown trout (salmo trutta). |
publisher |
Public Library of Science (PLoS) |
publishDate |
2013 |
url |
https://scholia.toolforge.org/work/Q30664169 http://www.wikidata.org/entity/Q30664169 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3749212 https://doi.org/10.1371/JOURNAL.PONE.0071052 |
geographic |
Antarctic Kerguelen Kerguelen Islands |
geographic_facet |
Antarctic Kerguelen Kerguelen Islands |
genre |
Antarc* Antarctic Kerguelen Islands |
genre_facet |
Antarc* Antarctic Kerguelen Islands |
op_relation |
https://scholia.toolforge.org/work/Q30664169 http://www.wikidata.org/entity/Q30664169 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3749212 doi:10.1371/JOURNAL.PONE.0071052 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1371/JOURNAL.PONE.0071052 |
container_title |
PLoS ONE |
container_volume |
8 |
container_issue |
8 |
container_start_page |
e71052 |
_version_ |
1787430549429682176 |