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...
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Language: | French |
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ftinraparis:oai:prodinra.inra.fr:405201 2023-05-15T13:27:43+02:00 European eel distribution and body condition in a river floodplain: effect of longitudinal and lateral connectivity Lasne, Emilien Acou, A. Vila-Gispert, A. Laffaille, P. 2008 application/pdf http://prodinra.inra.fr/ft/6C993537-F1D8-4839-BEF7-7001ECDC7D71 http://prodinra.inra.fr/record/405201 https://doi.org/10.1111/j.1600-0633.2008.00307.x fra fre http://creativecommons.org/licenses/by-nd-nc/1.0/ CC-BY-ND-NC Ecology of Freshwater Fish 4 (17), 567-576. (2008) Biodiversité et Ecologie Biodiversity and Ecology anguilla anguilla;body condition;lateral connectivity;distribution;large river anguille état corporel connectivité rivière loire plaine d'inondation écosystème ARTICLE 2008 ftinraparis https://doi.org/10.1111/j.1600-0633.2008.00307.x 2017-09-05T22:25:05Z 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 Institut National de la Recherche Agronomique: ProdINRA Ecology of Freshwater Fish 17 4 567 576 |
institution |
Open Polar |
collection |
Institut National de la Recherche Agronomique: ProdINRA |
op_collection_id |
ftinraparis |
language |
French |
topic |
Biodiversité et Ecologie Biodiversity and Ecology anguilla anguilla;body condition;lateral connectivity;distribution;large river anguille état corporel connectivité rivière loire plaine d'inondation écosystème |
spellingShingle |
Biodiversité et Ecologie Biodiversity and Ecology anguilla anguilla;body condition;lateral connectivity;distribution;large river anguille état corporel connectivité rivière loire plaine d'inondation écosystème Lasne, Emilien Acou, A. Vila-Gispert, A. Laffaille, P. European eel distribution and body condition in a river floodplain: effect of longitudinal and lateral connectivity |
topic_facet |
Biodiversité et Ecologie Biodiversity and Ecology anguilla anguilla;body condition;lateral connectivity;distribution;large river anguille état corporel connectivité rivière loire plaine d'inondation écosystème |
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. |
format |
Article in Journal/Newspaper |
author |
Lasne, Emilien Acou, A. Vila-Gispert, A. Laffaille, P. |
author_facet |
Lasne, Emilien Acou, A. Vila-Gispert, A. Laffaille, P. |
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 |
publishDate |
2008 |
url |
http://prodinra.inra.fr/ft/6C993537-F1D8-4839-BEF7-7001ECDC7D71 http://prodinra.inra.fr/record/405201 https://doi.org/10.1111/j.1600-0633.2008.00307.x |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_source |
Ecology of Freshwater Fish 4 (17), 567-576. (2008) |
op_rights |
http://creativecommons.org/licenses/by-nd-nc/1.0/ |
op_rightsnorm |
CC-BY-ND-NC |
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_ |
1766399967382994944 |