Diatom responses to sewage inputs and hydrological alteration in Mediterranean streams
dc.contributor.author
dc.date.accessioned
2019-01-30T12:44:02Z
dc.date.available
2019-01-30T12:44:02Z
dc.date.issued
2018-07-01
dc.identifier.issn
0269-7491
dc.identifier.uri
dc.description.abstract
We analyzed the conjoint effects of sewage inputs and hydrological alteration on the occurrence of teratological forms and on the assemblage composition of stream benthic diatoms. The study was performed in 11 Mediterranean streams which received treated or untreated urban sewage (Impact sites, I), whose composition and morphological anomalies were compared to upstream unaffected (Control, C) sites. The impact sites had high concentrations of ammonium, phosphorus, and pharmaceutical compounds (antibiotics, analgesics, and anti-inflammatories), particularly in those receiving untreated sewage. Impact sites had a higher proportion of teratological forms as well as a prevalence of diatom taxa tolerant to pollution. The differences in the diatom assemblage composition between the paired C and I sites were the largest in the impacted sites that received untreated sewage inputs as well as in the systems with lower dilution capacity. In these sites, the diatom assemblage was composed by a few pollution-tolerant species. Mediterranean river systems facing hydrological stress are highly sensitive to chemical contamination, leading to the homogenization of their diatom assemblages. Hydrologically stressed streams are highly sensitive to chemical contamination, causing the homogenization of diatom assemblages
dc.description.sponsorship
This study has been financially supported by the EU through the
FP7 project GLOBAQUA (Grant agreement No 603629). Authors
acknowledge the support from the Economy and Knowledge
Department of the Catalan Government through Consolidated
Research Group (ICRA-ENV 2017 SGR 1124)
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.relation.isformatof
Reproducció digital del document publicat a: https://doi.org/10.1016/j.envpol.2018.03.037
dc.relation.ispartof
Environmental Pollution, 2018, vol. 238, p. 369-378
dc.relation.ispartofseries
Articles publicats (D-B)
dc.rights
Attribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.uri
dc.title
Diatom responses to sewage inputs and hydrological alteration in Mediterranean streams
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/openAccess
dc.relation.projectID
info:eu-repo/grantAgreement/EC/FP7/603629/EU/MANAGING THE EFFECTS OF MULTIPLE STRESSORS ON AQUATIC ECOSYSTEMS UNDER WATER SCARCITY/GLOBAQUA
dc.type.version
info:eu-repo/semantics/publishedVersion
dc.identifier.doi
dc.identifier.idgrec
028711
dc.type.peerreviewed
peer-reviewed
dc.relation.FundingProgramme
dc.relation.ProjectAcronym