Catalogue GéoSAS
European eel study areas (IAA) by session - 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, and then every year since 2021, 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, then every year since 2021, using electric fishing equipment and landing nets. Thirty fishing points are carried out for a minimum of 30 seconds. 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 sheet refers to two layers, one showing only the study areas and their location, and the other specifying the concept of capture sessions.
Simple
- Date ( Publication )
- 2020-07-09T00:00:00
- Edition
- 2024
- Identifier
- fr-18007003900276-umrsas-selune-v_bioc_iaa_sctr_iaa
- Purpose
- The purpose of this data is to enable the location of eel catches within the framework of the Sélune observatory to be identified.
- 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_sctr_iaa
(
OGC:WMS
)
Visualiser "Secteurs d'études des anguilles (IAA) - Observatoire Sélune"
- OnLine resource
-
Télécharger "Secteurs d'études des anguilles (IAA) - Observatoire Sélune" au format Shapefile
(
WWW:DOWNLOAD-1.0-http--download
)
Télécharger "Secteurs d'études des anguilles (IAA) - Observatoire Sélune" au format Shapefile
- OnLine resource
- Observatoire Sélune ( WWW:LINK-1.0-http--link )
- OnLine resource
-
Télécharger "Secteurs d'études des anguilles (IAA) - Observatoire Sélune" au format CSV
(
WWW:DOWNLOAD-1.0-http--download
)
Télécharger "Secteurs d'études des anguilles (IAA) - Observatoire Sélune" au format CSV
- OnLine resource
-
v_bioc_iaa_sctr_iaa_sessions
(
OGC:WMS
)
Secteurs d'étude des anguilles (IAA) - Observatoire Sélune
- OnLine resource
-
Télécharger "Secteurs d'études des anguilles (IAA) par session - Observatoire Sélune" au format CSV
(
WWW:DOWNLOAD-1.0-http--download
)
Télécharger "Secteurs d'études des anguilles (IAA) par session - Observatoire Sélune" au format CSV
- OnLine resource
-
Télécharger "Secteurs d'études des anguilles (IAA) par session - Observatoire Sélune" au format Shapefile
(
WWW:DOWNLOAD-1.0-http--download
)
Télécharger "Secteurs d'études des anguilles (IAA) par session - Observatoire Sélune" au format Shapefile
- Hierarchy level
- Dataset
Conformance result
- Date ( Publication )
- 2013-12-10
- Explanation
- Non Evalué
- Pass
- No
- Statement
- The stations (also called study areas) were located using a hiking GPS (expected planimetric accuracy <= 20 m).
- Feature catalogue citation
gmd:MD_Metadata
- File identifier
- 847b2dbe-957c-4e5c-9024-e9683678299e XML
- Metadata language
- fre
- Character set
- UTF8
- Parent identifier
- Sélune biotic and abiotic observatory e91b4cb1-252d-4ae9-bdf4-24366af7a87c
- Hierarchy level
- Dataset
- Date stamp
- 2026-05-21T16:43:45
- Metadata standard name
- ISO 19115
- Metadata standard version
- 1.0
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