Upload resources

Upload your works to SEDICI to increase its visibility and improve its impact


Show simple item record

dc.coverage.spatial Río Saldo (Argentina) es
dc.date.accessioned 2018-07-05T17:20:05Z
dc.date.available 2018-07-05T17:20:05Z
dc.date.issued 2008-11
dc.identifier.uri http://hdl.handle.net/10915/67853
dc.description.abstract The main aim of this survey was to analyze seasonal variations in phytoplankton composition, relating its behaviour to temperature and conductivity, at El Destino (ED) sampling site in the Salado river lower-basin. A total of 28 phytoplankton samples were taken twice a week from 9/3 to 20/7/2004 and were analysed according to Utermöhl method. In total, 145 algae taxa were identified, although rare species were discarded in order to avoid statistical misinterpretation. Correlation coefficients and autocorrelation analyses (Q-Ljung-Box statistic) were performed in order to establish seasonal patterns of species abundance. Significant autocorrelations (p <0.05) were observed between phytoplankton species and temperature-conductivity patterns, thus illustrating their seasonal behaviour. Moreover, taxa were grouped according to their occurrence during different water temperature periods: (1) a ‘summer’ group, included 41 species that were well represented during warm-waters (>22ºC) like Planctonema lauterbornii, Chondrocystis dermochroa, Geminella interrupta, Chrooccocus spp., Merismopedia spp., among others; (2) a ‘winter’ group, which included 10 species whose highest densities were reached during the cold-waters period (<12ºC) for e.g. Binuclearia sp, Nitzschia fruticosa, Schroederia indica, Microcystis firma; (3) a ‘transitional’ group, of only 4 species with abundance peaks during ‘intermediate’ conditions (15.5ºC average) with Closteriopsis acicularis and Nodularia spumigena being the most remarkable; and (4) an ‘indifferent’ group, with 29 species of random behaviour whose autocorrelations remain within confidence limits, like Thorakochloris nygaardii, Pseudoanabaena limnetica, Monoraphidium giffithii, Scenedesmus linearis, etc. An evident seasonal succession was detected, having species substitution from summer warm-stagnant adapted species to cold-waters favoured ones, hence indicating different successional stages. en
dc.format.extent p. 137-148 es
dc.language es es
dc.title Variación estacional del fitoplancton en la cuenca inferior del Río Salado (provincia de Buenos Aires) es
dc.type Articulo es
sedici.identifier.issn 0326-1638 es
sedici.creator.person Bazzuri, María Elisa es
sedici.creator.person Gabellone, Néstor Adrián es
sedici.creator.person Solari, Lía C. es
sedici.subject.materias Ciencias Naturales es
sedici.subject.other sucesión estacional es
sedici.subject.other potamoplancton es
sedici.subject.other autocorrelación es
sedici.subject.other series en el tiempo es
sedici.description.fulltext true es
mods.originInfo.place Facultad de Ciencias Naturales y Museo es
sedici.subtype Articulo es
sedici.rights.license Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
sedici.rights.uri http://creativecommons.org/licenses/by-nc-nd/4.0/
sedici.relation.event IV Congreso de Ecología y Manejo de Ecosistemas Acuáticos Pampeanos (La Plata, 2008) es
sedici.description.peerReview peer-review es
sedici.relation.journalTitle Biología Acuática es
sedici.relation.journalVolumeAndIssue no. 24 es

Download Files

This item appears in the following Collection(s)

Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) Except where otherwise noted, this item's license is described as Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)