Assessing land use and land cover influence on surface water quality using a parametric weighted distance function

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dc.contributor.authorLiberoff, Ana
dc.contributor.authorFlaherty, Silvia
dc.contributor.authorHualde, Pablo
dc.contributor.authorGarcía Asorey, Martín
dc.contributor.authorFogel, Marilyn
dc.contributor.authorPascual, Miguel
dc.date.accessioned2019-11-05T11:51:56Z
dc.date.accessioned2023-03-20T14:08:11Z
dc.date.available2019-11-05T11:51:56Z
dc.date.available2023-03-20T14:08:11Z
dc.date.issued2019-11
dc.descriptionAnálisis espacial de la calidad de agua del Río Chubut a nivel de cuencaen_US
dc.description.abstractStream water quality is directly influenced by land use and human practices in the surrounding environment. Understanding such effects and the spatial extent of impacts is essential to generate reliable information for ecosystem-based management of water resources. We identified sources of impact on water quality and characterized indicator-specific landscape influence on samples collected during base flow along the Chubut River (43ºS, 69ºW). We modeled Total Nitrogen (TN), Total Phosphorous (TP), Soluble Reactive Phosphorous (SRP) concentrations and 15N of particulate organic matter along the river, as a function of effective contribution areas (AEC) of Land Use/Land Cover (LULC). AECs were calculated by assuming that landscape influence decays exponentially with the Euclidean distance between a given LULC parcel and the sampling point. We calibrated the model to the observations by estimating an indicator-specific decay rate. Agriculture and barren lands were the main sources of phosphate nutrients whereas urban areas were the main source of TN. Radius of landscape influence for SRP (100-180 km) was larger than for TP (10-25 km), reflecting different patterns of mobilization and delivery in the catchment. 15N variation was explained by vegetation cover but the influence rapidly decreased (1-4 km) reflecting a mostly autochthonous source of organic matter.en_US
dc.description.sponsorshipCONICET The Nature Conservancy University of California International Atomic Energy Agencyen_US
dc.identifier.citationLiberoff, A. L., Flaherty, S., Hualde, P., García Asorey, M. I., Fogel, M. L. & Pascual, M. A. (2019). Assessing land use and land cover influence on surface water quality using a parametric weighted distance function. Limnologica 74, 28-37.en_US
dc.identifier.issn0075-9511
dc.identifier.urihttps://www.repositorio.cenpat-conicet.gob.ar/handle/123456789/1249
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofseries74;
dc.subjectnutrientsen_US
dc.subjecthuman impactsen_US
dc.subjectlandscape influenceen_US
dc.subjectdistance-decay modelen_US
dc.subjectPatgoniaen_US
dc.titleAssessing land use and land cover influence on surface water quality using a parametric weighted distance functionen_US
dc.typeArticleen_US
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Artículo calidad de agua Río Chubut
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