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A methodology for defining homogeneous water bodies in estuaries e application to the transitional systems of the EU Water Framework Directive

2006Journal article Restricted access
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dc.contributor.authorFerreira, J.
dc.contributor.authorNobre, A.
dc.contributor.authorSimas, T.
dc.contributor.authorSilva, M.
dc.contributor.authorNewton, Alice
dc.contributor.authorBricker, S.
dc.contributor.authorWolff, W.
dc.contributor.authorStacey, A.
dc.contributor.authorSequeira, A.
dc.date.accessioned2012-04-10T09:51:08Z
dc.date.available2012-04-10T09:51:08Z
dc.date.issued2006
dc.description.abstractA methodology is developed and tested for division of estuarine and coastal systems into water bodies for monitoring and management purposes. This division is often implicit in the choice of sampling stations and in pollution abatement measures applied to different locations e it is now an explicit requirement of European Union Directive 2000/60/EC (Water Framework Directive) and recommended by United States Agencies such as EPA and NOAA. The approach considers both natural characteristics and the human dimension, by means of a stepwise methodology, which considers, on the one hand, morphology and salinity distribution, and, on the other, appropriate indicators of pressure and state. In the present application, nitrogen and phosphorus loading was used as the pressure component and chlorophyll a and dissolved oxygen as indicators of state. The criteria for system division were defined based on (1) an adimensional shape factor and salinity classes for the natural component; and (2) a normalised pressure index and (ASSETS) eutrophication symptom classes for the human dimension. Water quality databases and GIS were used to develop spatial distributions for the various components, and the results were aggregated into a final water body division, using tidal excursion as a ‘‘common sense’’ test. The methodology was applied to three well-studied systems in Portugal, a tubular estuary (Mondego), a wide lagunal estuary (Sado) and a coastal barrier island system (Ria Formosa). Although a final definition of water bodies will usually be a policy decision, this type of approach for the division of coastal systems into management units scientifically informs the decision-making process.por
dc.identifier.otherAUT: ANE00265;
dc.identifier.urihttp://hdl.handle.net/10400.1/995
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevierpor
dc.subjectEstuarypor
dc.subjectManagementpor
dc.subjectEU Water Framework Directivepor
dc.subjectWater bodypor
dc.subjectClassificationpor
dc.subjectTransitional waterspor
dc.titleA methodology for defining homogeneous water bodies in estuaries e application to the transitional systems of the EU Water Framework Directivepor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage482por
oaire.citation.issue66por
oaire.citation.startPage468por
oaire.citation.titleEstuarine, Coastal and Shelf Sciencepor
person.familyNameNewton
person.givenNameAlice
person.identifier333937
person.identifier.ciencia-id6F13-1247-B2B7
person.identifier.orcid0000-0001-9286-5914
person.identifier.scopus-author-id7201391894
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication636c0a22-6cf2-4324-a704-64777269e97d
relation.isAuthorOfPublication.latestForDiscovery636c0a22-6cf2-4324-a704-64777269e97d

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