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dc.contributor.author
Frau, Diego
dc.contributor.author
Devercelli, Melina
dc.contributor.author
José De Paggi, Susana
dc.contributor.author
Scarabotti, Pablo Augusto
dc.contributor.author
Mayora, Gisela Paola
dc.contributor.author
Battauz, Yamila Soledad
dc.contributor.author
Senn, Mariana
dc.date.available
2023-01-23T14:34:02Z
dc.date.issued
2015-05
dc.identifier.citation
Frau, Diego; Devercelli, Melina; José De Paggi, Susana; Scarabotti, Pablo Augusto; Mayora, Gisela Paola; et al.; Can top-down and bottom-up forces explain phytoplankton structure in a subtropical and shallow groundwater-connected lake?; Csiro Publishing; Marine and Freshwater Research; 66; 12; 5-2015; 1106-1115
dc.identifier.issn
1323-1650
dc.identifier.uri
http://hdl.handle.net/11336/185271
dc.description.abstract
Bottom-up and top-down control of phytoplankton is one of the most important hypothesis that explains and predicts the structure of aquatic community. Our aim was to elucidate whether predation and resource limitation can control phytoplankton composition and abundance in a subtropical shallow lake with groundwater connection to the river system. During 12 months, the lake was sampled at three points. Physico-chemical parameters, phytoplankton and zooplankton were sampled fortnightly, whereas fish were sampled every 3 months. The results showed that Euglenophyta dominated the total biovolume, followed by Dinophyta and Cryptophyta. As for the species composition, Chlorophyta was the dominant group (80 species recorded), followed by phylum Cyanobacteria (26 species recorded). Redundancy analysis (RDA) indicated that temperature and nitrate + nitrite concentration mainly explained biovolume changes, with zooplankton predation not having any measurable effect on phytoplankton during the high-water (HW) period. During low-water (LW) period top-down by fish was more important. At higher taxonomic resolution (species biovolume), phosphorus was another controlling factor. We concluded that phytoplankton in this lake is mainly regulated by hydrological changes as a macrofactor that affects nutrient availability and other environmental conditions. Even though bottom-up top-down forces do not have a central effect, we found evidence of positive nutrient influences at the HW period and fish effect at the LW period.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Csiro Publishing
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
CONTROL FACTORS
dc.subject
FLOODPLAIN LAKES
dc.subject
HYDROLOGICAL CONNECTIVITY
dc.subject
PLANKTON
dc.subject.classification
Ecología
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Can top-down and bottom-up forces explain phytoplankton structure in a subtropical and shallow groundwater-connected lake?
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-01-23T00:40:30Z
dc.journal.volume
66
dc.journal.number
12
dc.journal.pagination
1106-1115
dc.journal.pais
Australia
dc.journal.ciudad
Collingwood
dc.description.fil
Fil: Frau, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina
dc.description.fil
Fil: Devercelli, Melina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina
dc.description.fil
Fil: José De Paggi, Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina. Universidad Nacional del Litoral. Facultad de Bioquímica y Ciencias Biológicas; Argentina
dc.description.fil
Fil: Scarabotti, Pablo Augusto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina. Universidad Nacional del Litoral. Facultad de Humanidades y Ciencias; Argentina
dc.description.fil
Fil: Mayora, Gisela Paola. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina
dc.description.fil
Fil: Battauz, Yamila Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina
dc.description.fil
Fil: Senn, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina
dc.journal.title
Marine and Freshwater Research
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.publish.csiro.au/mf/MF14177
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1071/MF14177
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