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dc.contributor.author
Blettler, Martin Cesar Maria
dc.contributor.author
Amsler, Mario Luis
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Espínola, Luis Alberto
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Rabuffetti, Ana Pia
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Ezcurra de Drago, Inés
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Drago, Edmundo Carlos E.
dc.date.available
2023-01-12T09:31:04Z
dc.date.issued
2019-03
dc.identifier.citation
Blettler, Martin Cesar Maria; Amsler, Mario Luis; Espínola, Luis Alberto; Rabuffetti, Ana Pia; Ezcurra de Drago, Inés; et al.; Ecological relevance of anabranch confluences: Hydrological and morphological effects; John Wiley & Sons; Ecohydrology; 12; 2; 3-2019; 1-11
dc.identifier.issn
1936-0584
dc.identifier.uri
http://hdl.handle.net/11336/184442
dc.description.abstract
The aim of the current study was to determine the ecological role of anabranch confluences at diverse hydrological regimes, taking into consideration the floodplain secondary channels of a large river as a case of study. In conducting this study, we used unpublished data from sampling campaigns performed in the past. Triplicate benthic sediment samples were taken at each station using a bottom grab and according to sampling protocols equal to the current ones. Benthic taxa were identified at the species and genus levels. According to our results, a protracted effect by the El Niño–Southern Oscillation (ENSO) phenomenon on benthic fauna structure was evident. This effect was observed not only in the confluences but also all along the rivers, reflecting its ecological effect at least 1.5 years after its occurrence. Thus, the ENSO effect on benthic organisms should not be treated like a “physical action–reaction” but rather as an ecological relationship with lag periods (“ecological inertia”) after its occurrence. On the other hand, one of the studied confluences was categorized as a “hydro-geomorphic patch” along the river channel, resulting from shifts in hydraulic and sedimentological conditions, which are explained by local morphological features. This hydro-geomorphic patch created a critical site of abrupt changes in ecological patterns, enhancing the biodiversity of the river system. However, this hydro-geomorphic patch was not detected in another anabranch confluence, where the benthic assemblage was comparable with that recorded in straight sections. Accordingly, we concluded that the mere presence of an anabranch confluence is not a sufficient reason to assume enhancing local habitat heterogeneity or biodiversity.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
John Wiley & Sons
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ANABRANCH CONFLUENCES
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BENTHIC INVERTEBRATES
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ECO-HYDROLOGY
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ECO-MORPHOLOGY
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PARANÁ RIVER
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Oceanografía, Hidrología, Recursos Hídricos
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Ecological relevance of anabranch confluences: Hydrological and morphological effects
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-11-18T21:20:40Z
dc.journal.volume
12
dc.journal.number
2
dc.journal.pagination
1-11
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: Blettler, Martin Cesar Maria. 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: Amsler, Mario Luis. 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: Espínola, Luis Alberto. 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: Rabuffetti, Ana Pia. 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: Ezcurra de Drago, Inés. 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: Drago, Edmundo Carlos E.. 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
Ecohydrology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1002/eco.2068
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/eco.2068
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