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Ecotoxicological endpoints, are they useful tools to support ecological status assessment in strongly modified water bodies?

2016-01Journal article Restricted access
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dc.contributor.authorPalma, Patrícia
dc.contributor.authorLedo, L.
dc.contributor.authorAlvarenga, P.
dc.date.accessioned2017-04-07T15:57:16Z
dc.date.available2017-04-07T15:57:16Z
dc.date.issued2016-01
dc.description.abstractAlthough man-made reservoirs represent an important water supply source in countries where water scarcity has become a problem, little work has been done on the evaluation of their ecological status. Taking this in account, the general aim of this study was to assess the usefulness of ecotoxicological endpoints in the potential ecological status characterization of water reservoirs, with the purpose of their possible integration in evaluation programs developed under the Water Framework Directive (WFD). To achieve this purpose, a group of bioassays were selected to evaluate both water and sediment compartments at the Alqueva reservoir (the biggest from the Iberian Peninsula), with representative species from different taxonomic and functional groups: Vibrio fischeri, Thamnocephalus platyurus, Daphnia magna and Heterocypris incongruens. The ecotoxicological assessment showed that sublethal endpoints (e.g., luminescence, growth or reproduction), would be more useful and sensitive to identify toxicity patterns in this type of water body. In general, the results from this ecotoxicological tool-box agreed with the potential ecological status established according to the WFD, which indicates that the bioassays complement the ecological assessment. Furthermore, the use of an ecotoxicological approach can be extremely useful, especially in cases where the biotic indices are difficult to establish, such as in man-made reservoirs. However, when pollutant concentrations are very low, and/or when nutrients and organic matter concentrations are high, the two approaches do not fit, requiring further research to determine which organisms are more sensitive and the best biotic indices to use under those conditions. (C) 2015 Elsevier B.V. All rights reserved.
dc.identifier.doi10.1016/j.scitotenv.2015.09.014
dc.identifier.issn0048-9697
dc.identifier.urihttp://hdl.handle.net/10400.1/9662
dc.language.isoeng
dc.peerreviewedyes
dc.relationFCOMP-01-0124-FEDER-008582
dc.relation.isbasedonWOS:000365289300014
dc.titleEcotoxicological endpoints, are they useful tools to support ecological status assessment in strongly modified water bodies?
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876-PPCDTI/PTDC%2FAAC-AMB%2F103547%2F2008/PT
oaire.citation.endPage129
oaire.citation.startPage119
oaire.citation.titleScience of the Total Environment
oaire.citation.volume541
oaire.fundingStream5876-PPCDTI
person.familyNamePalma
person.givenNamePatrícia
person.identifier.ciencia-idA511-25AD-8A99
person.identifier.orcid0000-0002-9719-079X
person.identifier.scopus-author-id36883197800
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccess
rcaap.typearticle
relation.isAuthorOfPublicatione67ebf3d-65f3-4d73-9eaa-d1fac6ff6a82
relation.isAuthorOfPublication.latestForDiscoverye67ebf3d-65f3-4d73-9eaa-d1fac6ff6a82
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