Article (Scientific journals)
Assessment of Agriculture Pressures Impact on the Joumine River Water Quality Using the PEGASE Model
Boukari, Amira; Benabdallah, Sihem; Everbecq, Etienne et al.
2019In Environmental Management
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Keywords :
integrated water quality modelling; Diffuse pollution; Agricultural watershed; Nitrate loading; PEGASE; Joumine basin
Abstract :
[en] The protection of the aquatic environment while managing the risk of water scarcity in the Mediterranean region is challenging. Ensuring future sustainability of water resources needs improved monitoring networks and early warning system of future trends of water quality. A specific concern is given to nonpoint source pollution from agricultu re, which is often the main source of water quality degradation in rivers. In this work, we focused on the Joumine river basin, a rural-catchment situated north Tunisia dominated by agricultural activities and exposed to e utrophication problems. Aiming to present an assessment framework of the spatial–temporal water quality variability and quantify “press ure-impact” relationships, we used a physically based modeling approach involving the river/basin integrated model PEGASE (Planification Et Gestion de l’ASsa inissement des Eaux). PEGASE simulates watercourses physicochemical quality depending on the morphology of the drainage network, hydrometeorological conditions and natural and anthropogenic influences. Simulation results showed a better description of Joumine river water quality and helped in identifying exposed areas to nutrients export. Results have also emphasized the contribution of different pollution sources. We were able to examine the potential impact of agriculture diffuse pollution and we found that Nitrate is the element mostly threatening water quality. The nutrients patterns sugges t that climate and farming pract ices are important factors controlling their transfer. These findings demonstrate that the adopted assessment approach in investigating the behavior of the studied hydrosystem can be a u seful support to develop an appropriate surface water quality management program in a semiarid context.
Disciplines :
Aquatic sciences & oceanology
Computer science
Environmental sciences & ecology
Author, co-author :
Boukari, Amira ;  Université de Liège - ULiège > Form. doct. sc. (sc. & gest. env. - paysage)
Benabdallah, Sihem;  Centre de Recherches et des Technologies des Eaux ,Technoparck, Soliman Borj Cedria, Tunisie
Everbecq, Etienne ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Aquapôle
MAGERMANS, POL  ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Aquapôle
Grard, Aline ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Aquapôle
Habaieb, Hamadi;  Institut National Agronomique de Tunisie > Laboratoire GREEN-TEAM
Language :
English
Title :
Assessment of Agriculture Pressures Impact on the Joumine River Water Quality Using the PEGASE Model
Publication date :
21 September 2019
Journal title :
Environmental Management
ISSN :
0364-152X
eISSN :
1432-1009
Publisher :
Springer, Germany
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 24 December 2020

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