Photosynthetic biofilm study areas- Sélune Observatory

Microbial communities play a major role in the functioning of ecosystems: they are at the base of the food chain (primary production) and participate in the degradation of organic matter. These communities are also known to respond rapidly to environmental changes. Like macro-invertebrates, they can be used as ecological indicators.

Benthic diatoms are the main photosynthetic organisms in this biological community. The relative abundance of the various species is used to calculate an environmental quality index (EQI). Major differences in communities between the upstream and downstream zones were observed when the dams were in place. These differences will change once the dams are removed.

As part of the Sélune observatory, pilot stations have been set up along the main course of the Sélune, distributed from upstream to downstream of the hydroelectric dams. Three stations are located in the former reservoirs of the dams, while the other two, known as the reference stations, are outside the area of influence of the former dams (one downstream and the other upstream). At these stations, aquatic biocenoses (including benthic macroinvertebrates, biofilms, macrophytes, etc.) are monitored. Since September 2014, the stations are ideally sampled every month from April to October (7 annual surveys) using artificial substrates (glass slides placed in the water). In addition to the diatom survey (floristic list, IBD calculation), the chlorophyll-a concentration is measured.

This layer shows the location of the study sectors used to monitor photosynthetic biofilms and the campaigns carried out.

Date (Creation): 2025-03-03T10:38:00

Edition: 2025

Citation identifier: fr-20250303103810-umrsas-selune-v_bioc_biofilm_sctr_biofilm

Purpose: The purpose of this layer is to locate benthic macroinvertebrate monitoring stations as part of the Sélune Observatory.

Status: On going

Point of contact

Organisation name	Individual name	Electronic mail address	Role
INRAE U3E	Jean-Marc Roussel	jean-marc.roussel@inrae.fr	Point of contact
UMR DECOD	Gorzérino Caroline	caroline.gorzerino@inrae.fr	Point of contact
AESN		aesn@aesn.fr	funder
University of Rennes	Pannard Alexandrine	alexandrine.pannard@univ-rennes.fr	Point of contact
INRAE U3E	Nadine Herrard	nadine.herrard@inrae.fr	Custodian

Maintenance and update frequency: As needed

Maintenance note: Last update: 09/12/2024 with autumn 2024 data (surber only)

Metadata author

Organisation name	Individual name	Electronic mail address	Role
UMR DECOD	Chevé Manuel	manuel.cheve@inrae.fr	Publisher

Theme

Open data
Biology, Fauna, Flora

Keywords

Environmental monitoring facilities

INSPIRE topics

Environmental monitoring facilities

Use limitation: Unrestricted use subject to the following compulsory wording on all distribution documents: "Source: INRAE - DECOD / U3E".

Use limitation: Open licence : https://www.etalab.gouv.fr/licence-ouverte-open-licence

Access constraints: Other restrictions

Use constraints: License

Other constraints: No public access restriction

Spatial representation type: Vector

Denominator: 25000

Language: fre

Topic category

Environment

Begin date: 2014-09-01

End date: 2027-12-31

Reference system identifier: RGF93 / Lambert-93 (EPSG:2154)

Geometric object type: Point

Distributor

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
UMR 1069 SAS INRA - Agrocampus Ouest	Pole GéoSAS	geosas_adm@framalistes.org	Distributor

Distributor format

Name	Version
ESRI Shapefile	1.0

OnLine resource

Protocol	Linkage	Name
WWW:LINK-1.0-http--link	https://programme-selune.com/fr/observatoire/	Sélune Observatory
OGC:WFS	https://geosas.fr/geoserver/selune/wfs?SERVICE=WFS&REQUEST=GetCapabilities	selune:v_bioc_biofilm_sctr_biofilm_session
WWW:DOWNLOAD-1.0-http--download	https://geosas.fr/geoserver/wfs?service=WFS&version=2.0.0&request=GetFeature&typeName=selune:v_bioc_biofilm_sctr_biofilm_session&outputFormat=application%2Fjson	Download "Photosynthetic biofilm monitoring stations - Sélune Observatory Sélune" JSON file
WWW:DOWNLOAD-1.0-http--download	https://geosas.fr/geoserver/wfs?service=WFS&version=2.0.0&request=GetFeature&typeName=selune:v_bioc_biofilm_sctr_biofilm_session&outputFormat=csv	Download "Photosynthetic biofilm monitoring stations - Sélune Observatory" CSV file
WWW:DOWNLOAD-1.0-http--download	https://geosas.fr/geoserver/wfs?service=WFS&version=2.0.0&request=GetFeature&typeName=selune:v_bioc_biofilm_sctr_biofilm_session&outputFormat=SHAPE-ZIP	Download "Photosynthetic biofilm monitoring stations - Selune Observatory" in shapefile format

OnLine resource

Protocol	Linkage	Name
OGC:WFS	https://geosas.fr/geoserver/selune/wfs?SERVICE=WFS&REQUEST=GetCapabilities	selune:v_bioc_biofilm_sctr_biofilm_session

Hierarchy level: Dataset

Conformance result

Date (Publication): 2013-12-10

Explanation: Not rated

Pass: No

Statement: The monitoring stations were located using a hiking GPS (expected planimetric accuracy <= 20 m).

Feature catalogue citation

Metadata

File identifier: fd744239-52d3-413e-bc00-8b879b0a5ae0 XML

Metadata language: fre

Character set: UTF8

Parent identifier: 021e9477-7620-4341-b326-261b2aa6075f

Hierarchy level: Dataset

Date stamp: 2025-03-26T12:16:37

Metadata standard name: ISO 19115

Metadata standard version: 1.0

Metadata author

Organisation name	Individual name	Electronic mail address	Role
UMR 1069 SAS INRA - Agrocampus Ouest	GéoSAS	geosas_adm@framalistes.org	Point of contact

Other language

Language	Character encoding
English
French	UTF8

Overviews

Spatial extent

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Associated resources

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