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dc.creatorGiménez Díaz, Rafaeles_ES
dc.creatorCasalí Sarasíbar, Javieres_ES
dc.creatorDíez Beregaña, Javieres_ES
dc.identifier.issn0211-6820 (Print)
dc.identifier.issn1697-9540 (Electronic)
dc.description.abstractThe Government of Navarre (Spain) established a series of experimental watersheds on different sites of its territory in order to assess the impact of the agricultural activities on the environment. Hydrological/meteorological and water quality data are continuously monitored. In this paper, data recorded –precipitation, runoff, sediment, nitrate and phosphate– in two grain-sown watersheds (La Tejería and Latxaga) and in a third one (Oskotz) covered with forest and pasture (cattle-breeding) with a sub-watershed almost entirely under forest, are analyzed; the information covers a period of ca. 15 years. The inter/intra annual variability of the involved processes are studied as well as their impact on the water quality and on the ecosystem. The majority of the sediments yielded in the watersheds are registered during winter, though most of the erosive rainfalls occurred in summer. This is because of the easy-prone runoff that prevailed during winter due to the (much) higher water content of the soils in this period. The grain-sown watersheds –roughly similar at first view– present however important differences regarding sediment yield: 1800 kg/ha year at La Tejería and only 450 kg/ha year at Latxaga. This could be mainly due to differences in morphology, topography, and amount of stream channel vegetation between both sites. At Oskotz this figures are as a whole lower than those registered in the cultivated watersheds but eventually larger than those at Latxaga; this depending on the forest management (logging). Water quality is seriously affected at La Tejería with nitrate concentration constantly over critical threshold. By contrast, nitrate values are much lower in Latxaga watershed. However, phosphate concentrations were similar in both grain-sown watersheds corresponding to water with a significant risk of eutrophication. The cattle-breeding activity at Oskotz generated unexpected levels of phosphate much higher than those registered in the cultivated wathersheds.en
dc.description.sponsorshipEstos estudios fueron financiados a través de los proyectos I+D CGL2007-63453 y CGL2011-24336 pertenecientes al Ministerio de Ciencia e Innovación del Gobierno de España. Los autores agradecen, además, la generosa contribución del Departamento de Desarrollo Rural y Medio Ambiente del Gobierno de Navarra.es_ES
dc.format.extent19 p.
dc.publisherUniversidad de La Riojaes_ES
dc.relation.ispartofCuadernos de Investigación Geográfica 38 (1), 2012, p. 7-25es_ES
dc.rights© Universidad de La Rioja. Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported (CC BY-NC-ND 3.0)es
dc.subjectCalidad del aguaes_ES
dc.subjectCuencas experimentaleses_ES
dc.subjectRegión mediterráneaes_ES
dc.subjectUso del sueloes_ES
dc.titleEvaluación de la producción de sedimentos y calidad de las aguas en cuencas agrarias de Navarraes_ES
dc.title.alternativeEvaluation of sediment yield and water quality in agricultural catchments of Navarre (Spain)en
dc.typeArtículo / Artikuluaes
dc.contributor.departmentProyectos e Ingeniería Rurales_ES
dc.contributor.departmentLanda Ingeniaritza eta Proiektuakeu
dc.rights.accessRightsAcceso abierto / Sarbide irekiaes
dc.type.versionVersión publicada / Argitaratu den bertsioaes
dc.contributor.funderGobierno de Navarra / Nafarroako Gobernuaes

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© Universidad de La Rioja. Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported (CC BY-NC-ND 3.0)
Except where otherwise noted, this item's license is described as © Universidad de La Rioja. Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported (CC BY-NC-ND 3.0)

El Repositorio ha recibido la ayuda de la Fundación Española para la Ciencia y la Tecnología para la realización de actividades en el ámbito del fomento de la investigación científica de excelencia, en la Línea 2. Repositorios institucionales (convocatoria 2020-2021).
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