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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/55305
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dc.creatorCleber Cunha Figueredopt_BR
dc.creatorRicardo Motta Pinto-Coelhopt_BR
dc.creatorAna Maria M.B. Lopespt_BR
dc.creatorPedro H.o. Limapt_BR
dc.creatorBjörn Gückerpt_BR
dc.creatorAlessandra Gianipt_BR
dc.date.accessioned2023-06-23T22:48:34Z-
dc.date.available2023-06-23T22:48:34Z-
dc.date.issued2016-
dc.citation.volume75pt_BR
dc.citation.issue3pt_BR
dc.citation.spage445pt_BR
dc.citation.epage454pt_BR
dc.identifier.doihttps://doi.org/10.4081/jlimnol.2016.1330pt_BR
dc.identifier.issn1723-8633pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/55305-
dc.description.resumoEutrophication has impacted water bodies around the world. Knowledge on how to manage and restore these systems is urgently needed in order to maintain adequate water quality. However, causes and consequences of eutrophication may differ among lakes located in tropical and temperate regions. The eutrophication process is better understood for temperate lakes due to the availability of a larger number of studies and longer time-series of data sets. In tropical regions, long-term studies are rare, but could exemplify the particularities of eutrophication speed under conditions of higher temperatures. The purpose of this work was to analyze the evolution of the eutrophication process in an urban tropical reservoir, using a 15-year time series (with occasional interruptions). The dataset comprised monthly sampling of several environmental variables and the phytoplankton community. We found a continuous process of water quality deterioration, mainly related to increasing levels of nutrient and phytoplankton biomass, as well as decreasing water transparency, even after the installation of a municipal wastewater treatment plant. The ongoing eutrophication resulted in a steep trend of increasing cyanobacteria biomass that turned from a seasonal appearance into more persistent blooms in the most recent decades, while the relative contribution of other algal phyla to total phytoplankton biomass declined, which resulted in a loss of phytoplankton diversity. Phosphorus was the major determinant of the persistent blooms. Even though nitrogen concentrations were very high in this system, they were not significantly correlated with phytoplankton or cyanobacteria biomass. Total-P concentrations increased about three times during the study period, indicating that the reservoir did not respond to recent restoration efforts. The average water temperature, always sufficiently high to allow phytoplankton growth all year round, is an additional factor that makes tropical reservoirs especially sensitive to eutrophication. In contrast to temperate systems, the constantly favorable temperatures in the tropics may facilitate the persistence and dominance of cyanobacteria in the plankton community.pt_BR
dc.languageporpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentICB - DEPARTAMENTO DE BOTÂNICApt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofJournal of Limnologypt_BR
dc.rightsAcesso Abertopt_BR
dc.subjectEutrophicationpt_BR
dc.subjectLong-term studiespt_BR
dc.subjectCyanobacteriapt_BR
dc.subjectBloom stabilitypt_BR
dc.subjectTropical reservoirspt_BR
dc.subjectWastewater treatmentpt_BR
dc.subject.otherCianobacteriapt_BR
dc.subject.otherAgua - Estações de tratamentopt_BR
dc.titleFrom intermittent to persistent cyanobacterial blooms: identifying the main drivers in an urban tropical reservoirpt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://www.jlimnol.it/index.php/jlimnol/article/view/jlimnol.2016.1330pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-6248-1327pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-4486-1243pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-0884-8650pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-2524-8534pt_BR
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