Towards hydrochemical PUB – stable vs. heterogeneous NO3 and COD signatures across hydrographic structure and size
Ecrepont, S. ; Cudennec, C. ; Jaffrezic, A. ; Lavenne (de), A.
Type de document
Affiliation de l'auteur
UMR SAS INRA AGROCAMPUS OUEST RENNES FRA ; UMR SAS INRA AGROCAMPUS OUEST RENNES FRA ; UMR SAS INRA AGROCAMPUS OUEST RENNES FRA ; IRSTEA ANTONY UR HBAN FRA
Résumé / Abstract
Intensive agriculture is a major disturbing factor for water quality in Brittany, France. Observations of chemical data from 350 catchments over a 15 year period show that the high variability of hydrochemical dynamics between catchments in relation to geographic characteristics and farming practices, decreases with an increase in the catchment size. A stable signature of nitrate and DOC dynamics does emerge for bigger catchments, and was evidenced statistically.
Geophysical Research Abstracts, vol. 19, 1 p.
EGU General Assembly 2017, 23/04/2017 - 28/04/2017, Vienna, AUT