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dc.contributor.author
Neiff, Juan Jose
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dc.contributor.author
Poi, Alicia Susana G.
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dc.contributor.author
Casco, Sylvina Lorena
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dc.date.available
2018-08-10T19:19:36Z
dc.date.issued
2001-12
dc.identifier.citation
Neiff, Juan Jose; Poi, Alicia Susana G.; Casco, Sylvina Lorena; The effect of prolonged floods on Eichhornia crassipes growth in Paraná river floodplain lakes; Associação Brasileira de Limnologia; Acta Limnologica Brasiliensia; 13; 1; 12-2001; 51-60
dc.identifier.issn
0102-6712
dc.identifier.uri
http://hdl.handle.net/11336/54990
dc.description.abstract
The growth response of Eichhornia crassipes was studied in two floodplain lakes with different inundation regimes and one artificial pond isolated from the Paraná River. We measured the number and the length of green leaves for 12 months to obtain leaf density, maximum leaf length and monthly size distribution frequency. We also measured the increase in leaf dry weigth for 21 days at the end of the growing season (March, 1998). In the same occasion and at the end of prolonged floods (August, 1998), water samples and green leaves subsamples were analysed to determine nutrient content. In the last years, the floodplain lakes were frequently affected by extreme floods due to El Niño events.The prolonged inundation condition in the lake that had a long lasting inundation phase (371 days) was characterized by increases in the mean maximum leaf size (up to 111 cm), increases in the modal leaf length (most prominent mode = 105 cm), high increase in biomass (25 g m-2 day-1) and high nutrient content of green leaves (total nitrogen = 2.53%). The growth response was lower in the lake which had less number of flooding days per year (204) than the lake with the longest duration of the flooding. Nevertheless, it was higher than that described in a previous paper for extreme floods of short duration in the same lakes. In the artificial pond, average increase of green leaves biomass accounted to only 5 g m-2 day-1. The total isolation condition was characterized by decreases in the modal leaf length of the mature plants and increases in standing dead leaves density. These results are discussed in the context of the River Pulse Concept and variation on this theme to Paraná River floodplain
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Associação Brasileira de Limnologia
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
River Pulses
dc.subject
Tropical Rivers
dc.subject
Eichhornia Crassipes
dc.subject
Plant Growth
dc.subject
Floating Meadows
dc.subject.classification
Conservación de la Biodiversidad
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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
The effect of prolonged floods on Eichhornia crassipes growth in Paraná river floodplain lakes
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-05-21T17:24:19Z
dc.identifier.eissn
2179-975X
dc.journal.volume
13
dc.journal.number
1
dc.journal.pagination
51-60
dc.journal.pais
Brasil
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dc.journal.ciudad
Botucatú
dc.description.fil
Fil: Neiff, Juan Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; Argentina
dc.description.fil
Fil: Poi, Alicia Susana G.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; Argentina
dc.description.fil
Fil: Casco, Sylvina Lorena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; Argentina
dc.journal.title
Acta Limnologica Brasiliensia
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.ablimno.org.br/acta/pdf/acta_limnologica_contents1301E_files/resumo%205_13(1).pdf
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