Estimation of phosphorus export from a Mediterranean agricultural catchment with scarce data
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In: Hydrological Sciences Journal, Vol. 59, No. 1, 02.01.2014, p. 221–233.
Research output: Journal contributions › Journal articles › Research › peer-review
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TY - JOUR
T1 - Estimation of phosphorus export from a Mediterranean agricultural catchment with scarce data
AU - Gassmann, Matthias
AU - Brito, David
AU - Olsson, Oliver
PY - 2014/1/2
Y1 - 2014/1/2
N2 - Knowledge of the amount of nutrient input to receiving waters by their catchments is often mandatory for water managers. In this study, we estimated the export of phosphorus from a Mediterranean catchment into a downstream reservoir under the constraint of limited sampling data availability. We calibrated the physically- based catchment-scale model ZIN-Sed 2D to a regionalized flow duration curve and scarce event mean sampling data of dissolved and particulate phosphorus. The model results were further confirmed by discussion of soft data from the literature. Our modelling approach differs from commonly applied models by using a time step of less than 1 day, and a Langmuir isotherm for phosphorus sorption instead of the linear isotherm. The successful model application showed that this combination of methods is applicable under data-scarce conditions and the long-term phosphorus export from the study site is below average for this region.
AB - Knowledge of the amount of nutrient input to receiving waters by their catchments is often mandatory for water managers. In this study, we estimated the export of phosphorus from a Mediterranean catchment into a downstream reservoir under the constraint of limited sampling data availability. We calibrated the physically- based catchment-scale model ZIN-Sed 2D to a regionalized flow duration curve and scarce event mean sampling data of dissolved and particulate phosphorus. The model results were further confirmed by discussion of soft data from the literature. Our modelling approach differs from commonly applied models by using a time step of less than 1 day, and a Langmuir isotherm for phosphorus sorption instead of the linear isotherm. The successful model application showed that this combination of methods is applicable under data-scarce conditions and the long-term phosphorus export from the study site is below average for this region.
KW - Sustainability Science
KW - Chemistry
KW - Wasserqualität
KW - Modellierung
KW - phosphorus
KW - Langmuir isotherm
KW - phosphorus export modelling
KW - synthetic flow duration curve
KW - water quality
KW - ZIN-Sed 2D model
KW - Langmuir isotherm
KW - ZIN-Sed 2D model
KW - phosphorus export modelling
KW - synthetic flow duration curve
KW - water quality
UR - http://www.scopus.com/inward/record.url?scp=84900259754&partnerID=8YFLogxK
U2 - 10.1080/02626667.2013.798661
DO - 10.1080/02626667.2013.798661
M3 - Journal articles
VL - 59
SP - 221
EP - 233
JO - Hydrological Sciences Journal
JF - Hydrological Sciences Journal
SN - 0262-6667
IS - 1
ER -