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Large spill of mining wastes in Portelo stream: impacts on ecosystem integrity and on angling potential

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dc.contributor.authorGeraldes, Ana Maria
dc.contributor.authorRamalhosa, Elsa
dc.contributor.authorCaetano, Miguel
dc.contributor.authorTeixeira, Amílcar
dc.date.accessioned2014-06-02T16:24:47Z
dc.date.available2014-11-29T01:30:08Z
dc.date.issued2013
dc.description.abstractStreams located at Montesinho Natural Park (NE Portugal) have high potential for brown trout (Salmo trutta) angling . However, in this territory there are severa! abandoned mine sites. Therefore, the continuous drainage of fine grained tailings can be particularly problematic due to arsenic, copper, aluminium and zinc. However, until now no significant disturbance was detected in water quality and in biota. Nevertheless, there has never been such a large spill of mining wastes as that occurred in January 201 O. As a consequence of intense precipitation, severa! millions of cubic meters of wastes were spilled into Portelo stream. The large amount of wastes covered the riverbed with a layer of mud reaching more than half a meter in areas close to the mine. Both riparian and agricultura! areas were also affected by the sediments from mine. Wastes were spilled downstream by severa! strong rain events. Thus, the objective of the present research was to evaluate the impact of this event on ecosystem integrity and ultimately on angling potential. To achieve the proposed objective the water from four sampling points along the affected stream was sampled for the following metais - AI , Mn, Co, Cu , Ni, Cd and As. Concomitantly, macroinvertebrate and fish assemblages were also assessed. Temporal differences between stations were not detected. On contrary spatial differences were found. As expected, the stations located near the mine showed the highest leveis of contamination and disturbance. Consequently, in these stations no macroinvertebrates and fish were found during the period of study.por
dc.identifier.citationGeraldes, Ana Maria; Ramalhosa, Elsa; Caetano, Miguel; Teixeira, Amílcar (2013). Large spill of mining wastes in Portelo stream: Impacts on ecosystem integrity and on angling potential. In 7º Congresso Florestal Nacional. Bragança: Sociedade Portuguesa de Ciências Florestais. p. 173-183. ISBN 978-972-99656-2-3por
dc.identifier.isbn978-972-99656-2-3
dc.identifier.urihttp://hdl.handle.net/10198/9626
dc.language.isoporpor
dc.peerreviewedyespor
dc.publisherSociedade Portuguesa de Ciências Florestaispor
dc.subjectMine spillingpor
dc.subjectMacroinvertebratespor
dc.subjectHeadwater streampor
dc.subjectEcosystem integritypor
dc.subjectAngling potentialpor
dc.titleLarge spill of mining wastes in Portelo stream: impacts on ecosystem integrity and on angling potentialpor
dc.typeconference paper
dspace.entity.typePublication
oaire.citation.conferencePlaceVila Real-Bragança.por
oaire.citation.endPage183por
oaire.citation.startPage173por
oaire.citation.title7º Congresso Florestal Nacionalpor
person.familyNameGeraldes
person.familyNameRamalhosa
person.familyNameTeixeira
person.givenNameAna Maria
person.givenNameElsa
person.givenNameAmilcar
person.identifier2153193
person.identifier.ciencia-id7D13-2CED-D6C5
person.identifier.ciencia-id1A1D-FC05-A05D
person.identifier.ciencia-id9510-3CF3-0393
person.identifier.orcid0000-0003-4966-2227
person.identifier.orcid0000-0003-2503-9705
person.identifier.orcid0000-0001-5336-1174
person.identifier.ridJ-8566-2014
person.identifier.scopus-author-id57204313331
person.identifier.scopus-author-id6602978189
person.identifier.scopus-author-id7202385393
rcaap.rightsopenAccesspor
rcaap.typeconferenceObjectpor
relation.isAuthorOfPublication6e872389-a4ae-407d-b2cf-c2c8743dcd44
relation.isAuthorOfPublicationd74be6c0-1703-4f77-bd81-e289ec981ee3
relation.isAuthorOfPublication4f0753fd-4b4f-46f6-8e2f-20c7f835a32a
relation.isAuthorOfPublication.latestForDiscoveryd74be6c0-1703-4f77-bd81-e289ec981ee3

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