Please use this identifier to cite or link to this item: http://repositorio.lnec.pt:8080/jspui/handle/123456789/1016603
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dc.contributor.authorLeitão, T. E.pt_BR
dc.contributor.authorMota, R.pt_BR
dc.contributor.authorNovo, M. E.pt_BR
dc.contributor.authorLobo Ferreira, J. P. C.pt_BR
dc.date.accessioned2023-10-13T14:35:57Zpt_BR
dc.date.accessioned2023-11-21T11:01:42Z-
dc.date.available2023-10-13T14:35:57Zpt_BR
dc.date.available2023-11-21T11:01:42Z-
dc.date.issued2013-02pt_BR
dc.identifier.urihttps://repositorio.lnec.pt/jspui/handle/123456789/1016603-
dc.description.abstractThe presence of high vulnerable karstic systems in areas of intense human activities often results in the degradation of existing groundwater quality status. The water quality (WQ) protection and improvement, as required by the WFD (Water Framework Directive), depends on a correct prioritisation of the most relevant impact pollution sources to be identified within complex multi-stressor conditions. This paper presents a methodology that combines the use of hydrogeology, WQ and quantity data, and geophysical methods to access the human activities’ impacts upon the water cycle, focusing on the WQ of a karstic system. The procedure was applied to a section of the Portuguese karstic Querença-Silves aquifer, under FCT PROWATERMAN project PTDC/AAC-AMB/105061/2008 (http://www.lnec.pt/organizacao/dha/organizacao/dha/nas/estudos_id/PROWATERMAN). During this study an interpretation of the possible interconnections between pollutant sources, their pathways and local surface-groundwater connections was analysed, based on data obtained from field campaigns. As a result of this study, the most relevant recharge areas and the identification of influent sites of the local stream to the aquifer were acknowledged. The areal distribution of the diffuse pollution sources was verified in the monitoring points, especially those located in the near downstream of the larger farming plots. Pollution in this karst aquifer results from seepage through agricultural areas and infiltration in the influent points of the stream. This aspect of stream influence upon the aquifer means that pollution sources located upstream the area of the aquifer (e.g. WWTP (Wastewater Treatment Plant)) can contribute to the aquifer pollution.pt_BR
dc.language.isoengpt_BR
dc.publisher8th International Conference of EWRA Water Resources Management in an Interdisciplinary and Changing Contextpt_BR
dc.rightsopenAccesspt_BR
dc.titleCombined use of geophysical methods and water information to assess human activities impacts on karst groundwater qualitypt_BR
dc.typeconferenceObjectpt_BR
dc.identifier.localedicaoPortopt_BR
dc.description.pages11p.pt_BR
dc.identifier.localPortopt_BR
dc.description.sectorDG/NGEApt_BR
dc.identifier.conftitle8th International Conference of EWRA Water Resources Management in an Interdisciplinary and Changing Contextpt_BR
dc.contributor.peer-reviewedNAOpt_BR
dc.contributor.academicresearchersNAOpt_BR
dc.contributor.arquivoSIMpt_BR
Appears in Collections:DG/NGEA - Comunicações a congressos e artigos de revista

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