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dc.contributor.author
Kuppers, Gabriela Cristina
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dc.contributor.author
Bazzuri, Maria Elisa
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dc.contributor.author
Neschuk, Nancy Carolina
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dc.contributor.author
Claps, Maria Cristina
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dc.date.available
2023-10-25T17:28:43Z
dc.date.issued
2022-02
dc.identifier.citation
Kuppers, Gabriela Cristina; Bazzuri, Maria Elisa; Neschuk, Nancy Carolina; Claps, Maria Cristina; Impact of El Niño-Southern Oscillation on plankton ciliates from a saline lowland river in South America; Inter-Research; Aquatic Microbial Ecology; 88; 2-2022; 43-59
dc.identifier.issn
0948-3055
dc.identifier.uri
http://hdl.handle.net/11336/215949
dc.description.abstract
We analyzed the structure and dynamics of plankton ciliates from the Salado River, Buenos Aires (Argentina), during El Niño-Southern Oscillation events, to evaluate their response to alterations of certain environmental variables during these climatic phenomena. The basin exhibits intense land use at the headwaters and fluctuating salinity along the main channel, canals and tributaries. During El Niño (1997-1998), heavy rainfall caused high discharge, and low mean conductivity values were recorded along with low mean abundances in the entire basin. During neutral (2004-2005) and La Niña (2007-2009) events, the discharge was reduced, and mean conductivity was double the values recorded during El Niño, with maxima of mean abundances and diversity at the headwaters and the lower basin. The most abundant ciliates were tintinnids, heterotrichs and peritrichs. Species replacement was detected along the river system, mainly during the neutral event. At the headwaters and canals, abundance peaks of certain species were attributed to the strong human impact (nutrients and sewage inputs) and increased salinity, allowing the establishment of euryhaline ciliates. In the middle basin, freshwater species predominated, although less abundantly due to higher water flow. The mouth sector showed abundance peaks of an estuarine tintinnid. Temperature, conductivity and suspended solids were the most important variables driving ciliate structure. High discharge as a result of heavy rainfall during El Niño negatively influenced ciliate assemblages. In contrast, low water conditions during the other events allowed the development of diverse assemblages, increasing species number and abundance of particular species.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Inter-Research
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ARGENTINA
dc.subject
ASSEMBLAGE STRUCTURE
dc.subject
CILIATE PROTISTS
dc.subject
ENSO
dc.subject
SALADO RIVER
dc.subject.classification
Ecología
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Impact of El Niño-Southern Oscillation on plankton ciliates from a saline lowland river in South America
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-10-25T12:52:11Z
dc.journal.volume
88
dc.journal.pagination
43-59
dc.journal.pais
Alemania
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dc.journal.ciudad
Oldendorf
dc.description.fil
Fil: Kuppers, Gabriela Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
dc.description.fil
Fil: Bazzuri, Maria Elisa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
dc.description.fil
Fil: Neschuk, Nancy Carolina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
dc.description.fil
Fil: Claps, Maria Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
dc.journal.title
Aquatic Microbial Ecology
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.int-res.com/abstracts/ame/v88/p43-59/
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.3354/ame01980
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