OZCAR-RI Aurade Experimental Catchment - France

DEIMS.iD

https://deims.org/6f4ee641-2339-4006-b815-6e2ca6c6b0bf

Basic Information

Site Name

OZCAR-RI Aurade Experimental Catchment

Short name

Aurade agricultural catchment

Country

France

Web Address

Aurade website

Parent Site Name

LTSER Zone Atelier Pyrénées Garonne - France

Site Manager

Jean-Luc PROBST

Operating Organisation

CNRS-INEE

EcoLab

Keywords

agricultural practices

agro-hydrological modelling

alkalinity

calcareous soil

carbon 13

carbonate dissolution

catchment runoff chemistry

chemical weathering

climate change

CO2 weathering flux

continuous probe measurements

deuterium

dissolved major elements

Dissolved organic carbon (DOC)

flash flood

GIS

mineral fertilizers

molassic deposits

N-fertiliser

nitrate

nitrogen 15

oxygen isotopes

pesticides

physical erosion

precipitation chemistry

semi-arid climate

soil solution chemistry

subsurface runoff

surface runoff

suspended solids

Site Description

Small agricultural catchment (320 ha) with 30 years of data: impact of climate change and agricultural practices on soil erosion, weathering rate and river fluxes. Main cultures: wheat and sunflower in rotation Soils: calco soils Bedrock: Miocene molassic deposits (calcareous, clayey and sandy) 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 (http://www.ecolab.omp.eu/bvea/) is an international field site of the Critical Zone Exploration Network CZEN (http://www.czen.org/content/aurade-experimental-catchment), 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.

Last modified

2020-03-23 04:03:51

General Characteristics, Purpose, History

Site Status

existing

Year Established

1982

Purpose

To determine the impact of climate change and agricultural practices on soil erosion, weathering rate, biogeochemical cycles of elements and river fluxes. It is also to study the dynamic of agricultural pollutants (nitrogen, pesticides, heavy metals) and their impact the quality of soils, surface and ground waters, and aquatic and terrestrial ecosystems, particularly on the relationships between biodiversity and functions and on the ecosystem services.

History

This site has been set up in 1982 by the company AZF-Grande-Paroisse to follow nitrate and phosphate concentrations in the sream in order to reduce the losses of N and P from mineral ferilizer application. The survey was developped with the local farmer association (GAGT) in order to improve the agricultural practices and to reduce nitrate pollution. From 2000, Ecolab laboratory manage the site and is in charge of the whole hydrochemical survey, within the framework of an agreement with GAGT. From 2010, the site is a regional platform for research and innovation, and it is pat of the French catchment network (RBV). It belongs to the French research infrastructure OZCAR and to the European infastructure (ESFRI-LTER).

Research Topics

environmental indicator

chemistry

biogeochemistry

critical load

depositions chemistry

sediment chemistry

soil chemistry

soil solution chemistry

water chemistry

isotopic chemistry

environmental chemistry

climate change impact

regional climate change

environmental science

environmental assessment

environmental risk assessment

global change

global environmental change

soil science

soil chemistry

soil classification

soil solution chemistry

Parameters

agricultural parameter

concentration of nitrogen in seeds

concentration of nitrogen in the entire plant

crop growth rate

dissolved organic carbon in soil

amount of nitrate leaching

amount of nitrogen leaching

dry matter yield

growth rate

nutrient concentration

nutrient content

seed yield

seedling growth rate

surface air temperature

atmospheric parameter

air temperature

precipitation intensity

wind direction

wind speed

mean annual precipitation

air parameter

maximum temperature

mean annual air temperature

mean annual temperature

denitrification potential

nutrient flux

plant nitrogen concentration

ammonium nitrogen content

ammonium nitrate concentration

percent nitrogen

dissolved nutrient

percent organic carbon

cation exchange capacity

inorganic carbon content

inorganic nitrogen content

percent carbon

soil nitrate leaching

soil pH

soil solute amount

soil solution concentration

acid neutralizing capacity

dissolved organic carbon in water

suspended solids

air nitrogen oxides concentration

base cations content in water

buffer capacity

carbon to nitrogen ratio

chemical composition

chemical composition of water

dissolved organic nitrogen

exchange capacity

inorganic nutrient content

neutralizing capacity

nitrogen availability

concentration of nitrogen in seeds

concentration of nitrogen in the entire plant

denitrification potential

dissolved organic carbon in soil

nitrogen content

nutrient concentration

nutrient content

ecosystem parameter

inorganic nutrient content

soil solute amount

percent carbon

percent nitrogen

percent organic carbon

ammonium nitrate concentration

ammonium nitrogen content

crop growth rate

dissolved nutrient

environmental parameter

absorption coefficient

conductivity

remote sensing parameter

carbon-to-nitrogen ratio

cation exchange capacity

soil gravimetric water content

soil temperature

soil solute amount

soil solution concentration

dissolved organic nitrogen in soil

soil texture

thickness of soil horizon

total organic carbon

acid neutralizing capacity of soil

ammonium content

ammonium nitrate concentration

ammonium nitrogen content

available phosphorus

soil base saturation

electrical conductivity

inorganic carbon content

inorganic nitrogen content

mineral nitrogen mineralised from organic matter

percent carbon

percent nitrogen

percent organic carbon

soil nitrate leaching

specific conductivity

water heavy metal concentration

acid neutralizing capacity of water

ammonium nitrate concentration

dissolved organic carbon in water

electrical conductivity

Photos

Geographic

Size

320.00ha

Elevation (average)

220.00msl

Elevation (min)

173.00msl

Elevation (max)

268.00msl

Affiliation and Network Specific Information

Affiliation

Projects

Critical Zones

CZEN

IR OZCAR

Download

Site information [.json]

Centroid coordinates [.shp] [.kml]

Bounding Box [.shp] [.kml]

Boundaries [.shp] [.kml]

Site Details

Ecosystem and Environmental Characteristics

GEO-BON Biome

Fresh water rivers

Terrestrial

Biome

Agricultural

Ecosystem and Land Use

Agricultural

Rivers

Small rivers

Biogeographical Region

Atlantic Bio-geographical Region

Air Temperature: Average Annual

12.00°C

Air Temperature Range (Monthly Minimum)

5.00°C

Air Temperature Range (Monthly Maximum)

20.00°C

Precipitation Annual

600.00mm

Precipitation Maximum Monthly

70.00mm

Precipitation Minimum Monthly

40.00mm

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.

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)

Design and Scale of Site

Site Type (Spatial Design)

Complex Site

Design of Experimentation

no experimentation

Scale of Experimentation

catchment scale

Design of Observation

mainly observation

Scale of Observation

entire catchment

Infrastructure

Data infrastructure » Data storage » Proprietary file format

Data infrastructure » Data storage » Spatial data file (GIS)

Data infrastructure » Data storage » Spatial database (GIS)

Data infrastructure » Data storage » Structured file

Data infrastructure » Data storage » Graph or object database

Energy and data infrastructure » Energy supply » Permanent Power Produced » Less than 1 kW

Energy and data infrastructure » Energy supply » Permanent Power Supply Location » Central station(s)

Energy and data infrastructure » Data transmission » Data Transmission Type (within site) » No within site data transmission

Energy and data infrastructure » Data transmission » Data Transmission Type (from Site) » No data transmission from site

Energy and data infrastructure » Data transmission » Data Transmission Type (from Site) » Telephone line

Observation device » Measurement tower » No tower on site

Supporting infrastructure » Staff room at site » > 5 places

Supporting infrastructure » Lodging at site » No lodging possible

Supporting infrastructure » Transportation » Vehicle 4WD

Supporting infrastructure » Transportation » Vehicle 2WD

Infrastructure 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 Power Supply

Yes

Operation

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

Maintenance Interval

Data Management

General Data Policy

Co-authorship on publications resulting from use of the dataset

The opportunity to collaborate on the project using the dataset

Data Storage Location

Central

Data Services

No data service implemented

Network related information

LTER Site Classification

Master

Additional data

There is EURO-CORDEX climate scenario data available for this site:

Projected Near Surface Specific Humidity Change	RCP26	RCP45	RCP85
Projected Precipitation Change	RCP26	RCP45	RCP85
Projected Sea Level Pressure Change	RCP26	RCP45	RCP85
Projected Surface Downwelling Shortwave Radiation	RCP26	RCP45	RCP85
Projected Near-Surface Wind Speed	RCP26	RCP45	RCP85
Projected Near-Surface Air Temperature	RCP26	RCP45	RCP85
Projected Daily Maximum Near-Surface Air Temperature	RCP26	RCP45	RCP85
Projected Daily Minimum Near-Surface Air Temperature	RCP26	RCP45	RCP85

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