European eel distribution and body condition in a river floodplain: effect of longitudinal and lateral connectivity
We studied eel population characteristics (size classes, densities and body condition) in the lower Loire River floodplain (France) to evaluate the effects of longitudinal and lateral gradients. A total of 36 sites were electrofished in June 2005. The sites were grouped first into three river segmen...
Published in: | Ecology of Freshwater Fish |
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Online Access: | http://oatao.univ-toulouse.fr/6215/ http://oatao.univ-toulouse.fr/6215/1/lasne_6215.pdf https://doi.org/10.1111/j.1600-0633.2008.00307.x |
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ftunivtoulouseoa:oai:oatao.univ-toulouse.fr:6215 2023-05-15T13:27:37+02:00 European eel distribution and body condition in a river floodplain: effect of longitudinal and lateral connectivity Lasne, Emilien Acou, Anthony Vila-Gispert, Anna Laffaille, Pascal Universitat de Girona - UdG (SPAIN) Université de Rennes 1 (FRANCE) 2008-12 application/pdf http://oatao.univ-toulouse.fr/6215/ http://oatao.univ-toulouse.fr/6215/1/lasne_6215.pdf https://doi.org/10.1111/j.1600-0633.2008.00307.x en eng Wiley http://oatao.univ-toulouse.fr/6215/1/lasne_6215.pdf Lasne, Emilien and Acou, Anthony and Vila-Gispert, Anna and Laffaille, Pascal. European eel distribution and body condition in a river floodplain: effect of longitudinal and lateral connectivity. (2008) Ecology of Freshwater Fish, 17 (4). 567-576. ISSN 0906-6691 info:eu-repo/semantics/restrictedAccess Ecologie Environnement Ecosystèmes Anguilla anguilla Body condition Lateral connectivity Distribution Large river Article PeerReviewed info:eu-repo/semantics/article 2008 ftunivtoulouseoa https://doi.org/10.1111/j.1600-0633.2008.00307.x 2019-08-29T11:17:44Z We studied eel population characteristics (size classes, densities and body condition) in the lower Loire River floodplain (France) to evaluate the effects of longitudinal and lateral gradients. A total of 36 sites were electrofished in June 2005. The sites were grouped first into three river segments according to the distance inland corresponding to a longitudinal gradient and secondly into three lateral connectivity categories. Results indicate that small eels, especially those ≤300 mm, were very abundant downstream but density rapidly decreased upstream. In addition, eels ≤150 mm tended to be most abundant in connected waterbodies. Conversely, the distribution of larger eels was quite uniform across both dimensions. Eel condition decreased upstream. In parallel, in downstream river segment, eels had a lower condition in disconnected waterbodies than in connected ones. Eel specialists still have only a longitudinal perception of eel habitat. Our results suggest that lateral gradients should be also taken into consideration. Article in Journal/Newspaper Anguilla anguilla OATAO (Open Archive Toulouse Archive Ouverte - Université de Toulouse) Ecology of Freshwater Fish 17 4 567 576 |
institution |
Open Polar |
collection |
OATAO (Open Archive Toulouse Archive Ouverte - Université de Toulouse) |
op_collection_id |
ftunivtoulouseoa |
language |
English |
topic |
Ecologie Environnement Ecosystèmes Anguilla anguilla Body condition Lateral connectivity Distribution Large river |
spellingShingle |
Ecologie Environnement Ecosystèmes Anguilla anguilla Body condition Lateral connectivity Distribution Large river Lasne, Emilien Acou, Anthony Vila-Gispert, Anna Laffaille, Pascal European eel distribution and body condition in a river floodplain: effect of longitudinal and lateral connectivity |
topic_facet |
Ecologie Environnement Ecosystèmes Anguilla anguilla Body condition Lateral connectivity Distribution Large river |
description |
We studied eel population characteristics (size classes, densities and body condition) in the lower Loire River floodplain (France) to evaluate the effects of longitudinal and lateral gradients. A total of 36 sites were electrofished in June 2005. The sites were grouped first into three river segments according to the distance inland corresponding to a longitudinal gradient and secondly into three lateral connectivity categories. Results indicate that small eels, especially those ≤300 mm, were very abundant downstream but density rapidly decreased upstream. In addition, eels ≤150 mm tended to be most abundant in connected waterbodies. Conversely, the distribution of larger eels was quite uniform across both dimensions. Eel condition decreased upstream. In parallel, in downstream river segment, eels had a lower condition in disconnected waterbodies than in connected ones. Eel specialists still have only a longitudinal perception of eel habitat. Our results suggest that lateral gradients should be also taken into consideration. |
author2 |
Universitat de Girona - UdG (SPAIN) Université de Rennes 1 (FRANCE) |
format |
Article in Journal/Newspaper |
author |
Lasne, Emilien Acou, Anthony Vila-Gispert, Anna Laffaille, Pascal |
author_facet |
Lasne, Emilien Acou, Anthony Vila-Gispert, Anna Laffaille, Pascal |
author_sort |
Lasne, Emilien |
title |
European eel distribution and body condition in a river floodplain: effect of longitudinal and lateral connectivity |
title_short |
European eel distribution and body condition in a river floodplain: effect of longitudinal and lateral connectivity |
title_full |
European eel distribution and body condition in a river floodplain: effect of longitudinal and lateral connectivity |
title_fullStr |
European eel distribution and body condition in a river floodplain: effect of longitudinal and lateral connectivity |
title_full_unstemmed |
European eel distribution and body condition in a river floodplain: effect of longitudinal and lateral connectivity |
title_sort |
european eel distribution and body condition in a river floodplain: effect of longitudinal and lateral connectivity |
publisher |
Wiley |
publishDate |
2008 |
url |
http://oatao.univ-toulouse.fr/6215/ http://oatao.univ-toulouse.fr/6215/1/lasne_6215.pdf https://doi.org/10.1111/j.1600-0633.2008.00307.x |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_relation |
http://oatao.univ-toulouse.fr/6215/1/lasne_6215.pdf Lasne, Emilien and Acou, Anthony and Vila-Gispert, Anna and Laffaille, Pascal. European eel distribution and body condition in a river floodplain: effect of longitudinal and lateral connectivity. (2008) Ecology of Freshwater Fish, 17 (4). 567-576. ISSN 0906-6691 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1111/j.1600-0633.2008.00307.x |
container_title |
Ecology of Freshwater Fish |
container_volume |
17 |
container_issue |
4 |
container_start_page |
567 |
op_container_end_page |
576 |
_version_ |
1766399460603068416 |