• Catalogue GéoSAS
  •  
  •  
  •  

Eel abundance (IAA) - Sélune Observatory

The re-establishment of the river continuum on the Sélune after the dams have been levelled will enable colonization of the upper reaches of the basin, which were previously inaccessible to eels. Before the dams were levelled, 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-flushing phase by abundance index campaigns carried out in 2013, 2015, 2019 on a network of stations covering the entire Sélune hydrographic network. Since 2021, this network of stations has evolved to monitor changes in the part of the watershed accessible following the dismantling of the 2 dams. These data enable us to estimate changes in eel abundance along the Sélune and its tributaries, as well as their size structure before and after the removal of the dams.

The inventory is carried out in early September, every other year between 2013 and 2019, then every year since, using an electric fishing device and dip nets. Thirty thirty-second fishing stations are set up. A fishing station comprises approximately 100 meters of river. All eels caught are anaesthetized and biometric measurements are taken (weight, length, horizontal and vertical eye diameter, determination of yellow or silver stage). All eels are released directly at the fishing site.

This layer provides station abundances by fishing session.

Simple

Date ( Publication )
2021-04-29T00:00:00
Edition
2024
Identifier
fr-18007003900276-umrsas-selune-v_bioc_iaa_ab_iaa
Purpose
The purpose of this data is to estimate changes in eel abundance as part of the Sélune Observatory.
Status
Completed
Custodian
INRAE U3E - Nadine Herrard ( )
65 rue de Saint-Brieuc - CS 84215 Rennes 35042 France

+33 2 23 48 57 73 https://programme-selune.com/fr/
Point of contact
INRAE U3E - Frédéric Marchand ( )
65 rue de Saint-Brieuc - CS 84215 Rennes 35042 France

+33 2 23 48 57 86
funder
AESN - ( )
1, rue de la Pompe - BP 70087 HEROUVILLE SAINT-CLAIR Cedex 14203 France

02 31 46 20 20
Maintenance and update frequency
As needed
Keywords ( Theme )
  • Données ouvertes
Keywords ( Theme )
  • Limite
INSPIRE themes INSPIRE themes ( Theme )
  • Installations de suivi environnemental
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
N
S
E
W
thumbnail


Begin date
2013-09-02
End date
2027-12-31
Reference system identifier
RGF93 / Lambert-93 (EPSG:2154)
Geometric object type
Point

Distributor

Distributor
UMR 1069 SAS INRA - Agrocampus Ouest - Pole GéoSAS
65 rue de Saint-Brieuc Rennes cedex 35042 France

Name
ESRI Shapefile
Version
1.0
OnLine resource
v_bioc_iaa_ab_iaa ( OGC:WMS )

Visualiser "Abondances en anguilles (IAA) - Observatoire Sélune"

OnLine resource
Télécharger "Abondances en anguilles (IAA) - Observatoire Sélune" au format Shapefile ( WWW:DOWNLOAD-1.0-http--download )

Télécharger "Abondances en anguilles (IAA) - Observatoire Sélune" au format Shapefile

OnLine resource
Observatoire Sélune ( WWW:LINK-1.0-http--link )
OnLine resource
Télécharger "Abondances en anguilles (IAA) - Observatoire Sélune" au format CSV ( WWW:DOWNLOAD-1.0-http--download )

Télécharger "Abondances en anguilles (IAA) - Observatoire Sélune" au format CSV

Hierarchy level
Dataset

Conformance result

Date ( Publication )
2013-12-10
Explanation
Non Evalué
Pass
No
Statement
Les données d'abondances sont obtenues par agrégation des données de prélèvements d'individus.
Feature catalogue citation
  • Observatoire Sélune - Dictionnaire des attributs d'abondance en anguilles
Feature catalogue citation
  • cae34710-7fff-4c82-8a40-bd1ca3edd881

gmd:MD_Metadata

File identifier
905316e3-3fda-4446-b797-5f180dc67398 XML
Metadata language
fre
Character set
UTF8
Parent identifier
Sélune scientific program 32b2d23e-0f67-46fb-ad72-110514f1c8ee
Hierarchy level
Dataset
Date stamp
2025-04-22T11:47:39
Metadata standard name
ISO 19115
Metadata standard version
1.0
Point of contact
UMR 1069 SAS INRA - Agrocampus Ouest - GéoSAS ( )
65 rue de Saint-Brieuc - CS 84215 Rennes France 35042 France

00 33 (0)2 98 95 99 68 http://geowww.agrocampus-ouest.fr

Overviews

overview

Provided by

logo

Share on social sites

Associated resources

Not available


  •  
  •  
  •