Catalogue GéoSAS
European eel catches (IAA) - Sélune Observatory
The restoration of the Sélune river continuum after the dams were demolished will allow colonization of the upper reaches of the basin, which were previously inaccessible to eels. Before the demolition, two main tributaries were used by amphihaline fish for reproduction, in addition to the main river: the Beuvron and the Oir. The eel population of the Sélune was monitored in the pre-demolition phase by abundance index campaigns carried out in 2013, 2015, 2019, 2021, and 2023 on a network of stations covering the entire Sélune river system. These data make it possible to estimate changes in eel abundance along the Sélune and its tributaries and their size structure before and after the destruction of the dams.
The inventory is carried out in early September, every other year, using electric fishing equipment and landing nets. Thirty fishing points are carried out for a minimum of 30 seconds each. A fishing station covers approximately 100 meters of river. All eels caught are anesthetized and undergo biometric measurements (weight, length, horizontal and vertical eye diameter, determination of yellow or silver stage). All eels are released directly at the fishing site.
This layer contains individual data on the eels caught.
Simple
- Date ( Publication )
- 2021-04-29T00:00:00
- Edition
- 2024
- Identifier
- fr-18007003900276-umrsas-selune-v_bioc_iaa_ind_iaa
- Purpose
- The purpose of this data is to provide an understanding of the variability among eels caught as part of the Sélune observatory.
- Status
- Completed
- Maintenance and update frequency
- As needed
- Keywords ( Theme )
-
- Données ouvertes
- Keywords ( Theme )
-
- Limite
- INSPIRE themes INSPIRE themes ( Theme )
-
- Installations de suivi environnemental
- Thésaurus INRAE Thésaurus INRAE ( Theme )
-
- eel
- Use limitation
- Usage libre sous réserve des mentions obligatoires sur tout document de diffusion : "Source : INRAE - U3E"
- Use limitation
- Licence ouverte : https://www.etalab.gouv.fr/licence-ouverte-open-licence
- Access constraints
- Other restrictions
- Use constraints
- License
- Other constraints
- Pas de restriction d’accès public
- Spatial representation type
- Vector
- Denominator
- 25000
- Metadata language
- fre
- Topic category
-
- Environment
))
- Begin date
- 2013-09-02
- End date
- 2027-12-31
- Reference system identifier
- RGF93 / Lambert-93 (EPSG:2154)
- Geometric object type
- Point
Distributor
- Name
- ESRI Shapefile
- Version
- 1.0
- OnLine resource
-
v_bioc_iaa_ind_iaa
(
OGC:WMS
)
Visualiser "Captures d'anguilles (IAA) - Observatoire Sélune"
- OnLine resource
-
Télécharger "Captures d'anguilles (IAA) - Observatoire Sélune" au format Shapefile
(
WWW:DOWNLOAD-1.0-http--download
)
Télécharger "Captures d'anguilles (IAA) - Observatoire Sélune" au format Shapefile
- OnLine resource
- Observatoire Sélune ( WWW:LINK-1.0-http--link )
- OnLine resource
-
Télécharger "Captures d'anguilles (IAA) - Observatoire Sélune" au format CSV
(
WWW:DOWNLOAD-1.0-http--download
)
Télécharger "Captures d'anguilles (IAA) - Observatoire Sélune" au format CSV
- OnLine resource
- Dispersion and (re)colonization of the Sélune and its tributaries ( WWW:LINK-1.0-http--link )
- OnLine resource
- Activity report on the Sélune aquatic biocenoses observatory 2019-2021 ( WWW:LINK-1.0-http--link )
- OnLine resource
- Observatoire des biocénoses aquatiques de la Sélune - 2022 activity report ( WWW:LINK-1.0-http--link )
- OnLine resource
- Sélune aquatic biocenoses observatory - 2023 activity report ( WWW:LINK-1.0-http--link )
- OnLine resource
- 2024 activity report for the Sélune aquatic biocenoses observatory ( WWW:LINK-1.0-http--link )
- OnLine resource
- Rapport d'activités 2025 de l'Observatoire des biocénoses aquatiques de la Sélune ( WWW:LINK-1.0-http--link )
- Hierarchy level
- Dataset
Conformance result
- Date ( Publication )
- 2013-12-10
- Explanation
- Non Evalué
- Pass
- No
- Statement
- Individual data are measured in the field during inventory. The fishing protocol consists of using a single-anode direct current electric fishing device with two semi-circular fixed nets at the bottom and one mobile net. Thirty fishing points lasting at least 30 seconds are carried out. Each point is repeated by moving in a zigzag pattern from one bank to the other, at a 45° angle to the riverbed, 3-5 meters upstream. A fishing station covers approximately 100 meters of river. All eels caught are anesthetized and undergo biometric measurements (weight, length, horizontal and vertical eye diameter, determination of yellow or silver stage). All eels are released directly at the fishing site.
- Feature catalogue citation
gmd:MD_Metadata
- File identifier
- 21eb59c5-d80d-4390-9e2d-e8ab8f204bc7 XML
- Metadata language
- fre
- Character set
- UTF8
- Parent identifier
- Sélune biotic and abiotic observatory e91b4cb1-252d-4ae9-bdf4-24366af7a87c
- Hierarchy level
- Dataset
- Date stamp
- 2026-07-08T17:58:06
- Metadata standard name
- ISO 19115
- Metadata standard version
- 1.0
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