OZCAR-RI Aurade Catchment - France

Basic Information
Site Name
OZCAR-RI Aurade Catchment
Short name
Aurade
Country
France
Web Address
Aurade Website
CZEN Website
Operating Organisation
CNRS - Institut écologie et environnement (INEE)
UMR 5245 ECOLAB
Site Manager
Jean-Luc PROBST
Funding Agency
CNRS - Institut National des Sciences de l'Univers (INSU)
Site Description
Small agricultural catchment (320 ha) with 30 years of data to study impact of climate change and agricultural practices on soil erosion, weathering rate and river fluxes. Continuous measurements with sensor: river discharge, Temperature, pH, conductivity, turbidity, dissolved oxygen, nitrate Weekly samples and high resolution sampling during storm runoff: major cations and anions, alkalinity, pH, dissolved silica, conductivity, total suspended solids, stable isotopes (13C of DIC, 2H and 18O of H2O, 15N of nitrates), heavy metals, some pesticide molecules Climatological station, rain collector for precipitation chemistry, soil solution station with lysimetric plate at different depths. Carbon and water tower flux measurements (Eddy covariance see CESBIO laboratory contribution) Collaboration with the Aurade farmer association for fertilizer and pesticide inputs, cultivation, agricultural practices... Aurade experimental catchment is an international field site of the Critical Zone Exploration Network CZEN, a field site of the French Research Infrastructure OZCAR and it is also a site of the French LTSER ZA PYGAR "Zone Atelier Pyrénées-Garonne". and a regional Platform of Research and Innovation-Midi Pyrénées.
Relationships to other sites
This site belongs to:
Last modified
2023-07-26 08:07:53

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General Characteristics and Status
Site Status
Operational
Year Established
1982
Observed properties
Affiliation and Network Specific Information
Affiliation
ILTER✔This site is a verified "ILTER" member.
OZCAR RI✖The affiliation of this site with "OZCAR RI" is not verified.
LTER Europe✔This site is a verified "LTER Europe" member.
ICOS✖ (http://meta.icos-cp.eu/resources/stations/ES_FR-Aur)The affiliation of this site with "ICOS" is not verified.
LTER France✔ (CZO_EU_FR_040)This site is a verified "LTER France" member.
Critical Zone Collaborative Network (CZ Net)✖The affiliation of this site with "Critical Zone Collaborative Network (CZ Net)" is not verified.
Photos
Côteaux de Gascogne, South-Western France

Côteaux de Gascogne, South-Western France

Geographic
View in site map
Elevation (average)
220.00msl
Elevation (min)
173.00msl
Elevation (max)
268.00msl
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Site information [.json]

Centroid/representative coordinates [.shp] [.kml]
Bounding Box [.shp] [.kml]
Boundaries [.shp] [.kml]
GEO-BON Biome
Fresh water rivers
Terrestrial
Biome
Agricultural
Ecosystem Type
Agricultural
Rivers
Small rivers
Biogeographical Region
Atlantic Bio-geographical Region
EUNIS habitat
Inland surface waters (C)
Inland surface waters (C) » Surface running waters (C2)
Inland surface waters (C) » Surface running waters (C2) » Permanent non-tidal, smooth-flowing watercourses (C2.3)
Regularly or recently cultivated agricultural, horticultural and domestic habitats (I)
Regularly or recently cultivated agricultural, horticultural and domestic habitats (I) » Arable land and market gardens (I1)
Regularly or recently cultivated agricultural, horticultural and domestic habitats (I) » Arable land and market gardens (I1) » Intensive unmixed crops (I1.1)
Air Temperature: Average Annual
12.00°C
Precipitation Annual
600.00mm
Geology
Miocene molassic deposits: calcareous, clayey and sandy

Vegetation
Cultures: wheat and sunflower in rotation
Soils
Calcareous soils
Hydrology
The hydrological regime is pluvial with low water period from june to november. Important flash floods occur in december-january, but the most significant one are observed in May or June. The impermeable substratum favorise rapid water, nutirents and contaminants during flood events. The groundwaters are limited, mainly located in the alluvial deposits and in some sand lends in the middle slope. The evapotranspiration is very high and the runoff coefficient is very low (15% on average). Consequently, during the driest years, intermittent flows may occur during the summer period.
Site Type
Stationary land-based site
Design of Experimentation
no experimentation
Scale of Experimentation
catchment scale
Design of Observation
mainly observation
Scale of Observation
entire catchment
Permanent Power Supply
Yes
Equipment
Observation devices » Measurement tower » No tower on site
Data infrastructure » Data storage » Structured file
Data infrastructure » Data storage » Spatial database (GIS)
Data infrastructure » Data storage » Spatial data file (GIS)
Data infrastructure » Data storage » Proprietary file format
Data infrastructure » Data storage » Graph or object database
Supporting infrastructure » Transportation » Vehicle 2WD
Supporting infrastructure » Transportation » Vehicle 4WD
Supporting infrastructure » Staff room at site » > 5 places
Supporting infrastructure » Lodging at site » No lodging possible
Energy and data transmission infrastructure » Data transmission » Data Transmission Type (from site) » Telephone line
Energy and data transmission infrastructure » Data transmission » Data Transmission Type (from site) » No data transmission from site
Energy and data transmission infrastructure » Data transmission » Data Transmission Type (within site) » No within site data transmission
Energy and data transmission infrastructure » Energy supply » Permanent Power Supply Location » Central station(s)
Energy and data transmission infrastructure » Energy supply » Permanent Power Produced » Less than 1 kW
Equipment notes
hydrological gauging station (weir, limnigraph)
2 automatic water samplers
with specific softwares connected to discharge variations
Continuous multiparameter probe measurements
Wood house
Solar devices
Climatological station
Soil solution station
2 Collectors for rainwater (quality/quantity) for major elemnts and water isotopes
Accessible All Year
Yes
All parts of Site Accessible
Yes
Access Type
regular car
Permanent Operation
Yes
Operation Notes
Chemical and isotopic analysis
Sensors for multiparameters probes
Field sampling and lab materials
Field rent for farmers
Missions for field survey and sampling
This estimation does not include the salaries of the permanent and non-permanent staff
Site Visit Interval
7
Maintenance Interval
7
General Data Policy
Co-authorship on publications resulting from use of the dataset
The opportunity to collaborate on the project using the dataset
LTER Site Classification
Master
Related External Resources
There is a total of 1 datasets for this site available on the eLTER Digital Asset Register (DAR). Click here to get an overview of these datasets.
There is EURO-CORDEX climate scenario data available for this site:
Projected Near Surface Specific Humidity ChangeRCP26RCP45RCP85
Projected Precipitation ChangeRCP26RCP45RCP85
Projected Sea Level Pressure ChangeRCP26RCP45RCP85
Projected Surface Downwelling Shortwave RadiationRCP26RCP45RCP85
Projected Near-Surface Wind SpeedRCP26RCP45RCP85
Projected Near-Surface Air TemperatureRCP26RCP45RCP85
Projected Daily Maximum Near-Surface Air TemperatureRCP26RCP45RCP85
Projected Daily Minimum Near-Surface Air TemperatureRCP26RCP45RCP85

You can also download the entire climate scenario dataset for this site from the EUDAT B2SHARE data store.