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dc.contributor.author
Quaini, Karina Paola  
dc.contributor.author
Gabellone, Nestor Adrian  
dc.contributor.author
Ardohain, Diego Martin  
dc.contributor.author
Solari, Lía Cristina  
dc.date.available
2017-12-22T16:59:28Z  
dc.date.issued
2005-12  
dc.identifier.citation
Quaini, Karina Paola; Solari, Lía Cristina; Ardohain, Diego Martin; Gabellone, Nestor Adrian; Muestreo intensivo de parámetros físico-químicos en dos sitios de la cuenca inferior del Río Salado (Provincia de Buenos Aires): estudio comparativo; Instituto de Limnología "Dr. Raúl Ringuelet"; Biología Acuática; 22; 12-2005; 215-222  
dc.identifier.issn
0326-1638  
dc.identifier.uri
http://hdl.handle.net/11336/31390  
dc.description.abstract
Dredging works in several sectors of Salado River are probably the most important activity of disturbance in a pampean aquatic ecosystem, with implications in a RAMSAR site (Samborombón Bay). The interventions are taking place in the lower basin and considered as a reference of disturbance for future and major works as the dredging of almost 100 km of the Salado River main channel. Physical and chemical conditions were analysed in two sectors: upstream (El Destino, ED) and downstream (Guerrero, G) of La Postrera. This study was done before and during the extraction of a river restriction and the old bridge replacement. Samples were collected during 18 weeks (3/04-7/04) (2 or 3 times/week). Each sample was the result of the water sample integration on a transversal transect of the stream. The physical and chemical parameters measured «in situ» were: pH, conductivity, turbidity, dissolved oxygen, temperature and salinity. Fractions of phosphorus and suspended solids were analysed. The simulation of different sampling frequencies showed that variables related to physic environment (temperature, conductivity and pH) can be explained by monthly and biweekly sampling. On the other hand, the main variations of total phosphorus, suspended solids and turbidity can be only explained by the daily sampling. Suspended solids concentration was higher upstream (mean: 0.12 g.L -1 ) than downstream (mean: 0.10 g.L -1 ). Maximum mean phosphorus concentration values were reached at ED. Soluble reactive phosphorus concentrations were similar at both river sectors (305.81 and 307.08 µg.L -1 in ED and G, respectively). Conductivity diminished from 6,770to 2,530 µS.cm -1 due to the discharge increase. Total particulate phosphorus, suspended solids and turbidity increased at ED and diminished at G. The dredging works in moments of low waters, and taking care of the extracting material location, as recommended the environmental managementtechniques, did not affect sediment transport through the river. The phosphorus concentration differences between both river sectors could be by the settlement processes in La Tigra Lake and the availability of this nutrient to the phytoplankton and macrophytes.  
dc.format
application/pdf  
dc.language.iso
spa  
dc.publisher
Instituto de Limnología "Dr. Raúl Ringuelet"  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject.classification
Biología Marina, Limnología  
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Ciencias Biológicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Muestreo intensivo de parámetros físico-químicos en dos sitios de la cuenca inferior del Río Salado (Provincia de Buenos Aires): estudio comparativo  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2017-11-03T20:16:38Z  
dc.journal.volume
22  
dc.journal.pagination
215-222  
dc.journal.pais
Argentina  
dc.journal.ciudad
La Plata  
dc.description.fil
Fil: Quaini, Karina Paola. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Limnología ; Argentina  
dc.description.fil
Fil: Gabellone, Nestor Adrian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Limnología ; Argentina  
dc.description.fil
Fil: Ardohain, Diego Martin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Limnología ; Argentina  
dc.description.fil
Fil: Solari, Lía Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Limnología ; Argentina  
dc.journal.title
Biología Acuática  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.bacuatica.org/BA_ant/ba22.pdf