Drying out of small prairie wetlands after conversion of their catchments from cultivation to permanent brome grass

agua alfalfa bassin versant bilan hydrique bromus inermis eau escorrentia gestion des ressources grasslands herbage hidrologia hydrologie hydrology land use lucerne luzerne medicago sativa meltwater praderas prairie prairies reclaimed land reclamation resource management ruissellement runoff terre humide tierras rehabilitadas utilisation des terres water water balance watersheds wetlands