Catalalogue de l'ORE OMERE
ORE OMERE
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Evaluation of pesticides contents in cultivated soils in the Roujan catchment area.
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Contents of trace metals in water (rain, run off, underground waters ) on the Roujan catchment area.
Regular sampling of surface water, rainwater or groundwater is carried out in the Roujan catchment area. These samples are sampled and analysed in order to assess the content of trace metals in the waters of the basin.
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The evaluation of soil moisture in different areas of the Roujan catchment area is carried out by measuring the moisture content of fresh soil samples.
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These data correspond to a non-systematic monitoring of dissolved, particulate or total organic carbon contents in water (rain, surface overflow, underground water) in the Roujan catchment area.
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soil map of the kamech watershed drawn up by P. Zante & J. Collinet in 2003 with the ancient french soil referential CPCS.
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Pesticide contents are determined on the suspended matter extracted by filtration (0,7µm) in runoff water. Contents allow quantification of particula transport of pesticides and allow too compare it to solute transport.
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Limits of the impluviums of : - the wadi - the agronomic plot - the gully - the Kamech micro-basin
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The main crop is the vine. The site is strongly anthropised (network of ditches, terraced slopes, etc.). The climate is sub-humid Mediterranean with a prolonged dry season. The average annual rainfall is around 650 mm and the average annual ETP (Penman) is 1090 mm. The basic hydro-meteorological equipment, in place since May 1992, consists of a network of 9 rain gauges and 4 pluviographs, a device for measuring water table heights (14 sites), a device for measuring flows, suspended matter and pesticides at the outlets of the catchment area and of two plots with different cultivation routes and a network of 8 stations for measuring soil water content and water potential. Roujan was part of the reference catchment area network of the Network Observation Service Used for Hydrology Research created by the GIP Hydrosystème.
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water samples ( rain, runoff, underground water) are carried in icebox and frozen. ( FILTRATION ? ). Samples are analyzed by a dedicated laboratory, that quantify a set of parameters including from 1 to 430 pesticide active ingredients and their metabolites.