Linking hydrologic regime, rainfall and leaf litter fall in a riverine forest within the ramsar site humedales Chaco (Argentina)

The input of leaf litter from riparian vegetation could be affected by changes in precipitation and modifications to the hydrological regime. We analyse the pattern of leaf litterfall at the community scale as well as the breakdown rate in a mixed gallery forest that covers the levees of the Paran...

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Autores principales: Casco, Sylvina Lorena, Galassi, María E., Mari, Eliana Karina Alejandra, Poi, Alicia Susana Guadalupe, Neiff, Juan José
Formato: Artículo
Lenguaje:Inglés
Publicado: Wiley 2021
Materias:
Leaf breakdown
Leaf production
Paraná river
South America
Subtropical riverine forests
Acceso en línea:http://repositorio.unne.edu.ar/handle/123456789/28199
Aporte de:
RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) de Universidad Nacional del Nordeste
id I48-R184-123456789-28199
record_format dspace
spelling I48-R184-123456789-281992025-03-06T11:05:22Z Linking hydrologic regime, rainfall and leaf litter fall in a riverine forest within the ramsar site humedales Chaco (Argentina) Casco, Sylvina Lorena Galassi, María E. Mari, Eliana Karina Alejandra Poi, Alicia Susana Guadalupe Neiff, Juan José Leaf breakdown Leaf production Paraná river South America Subtropical riverine forests The input of leaf litter from riparian vegetation could be affected by changes in precipitation and modifications to the hydrological regime. We analyse the pattern of leaf litterfall at the community scale as well as the breakdown rate in a mixed gallery forest that covers the levees of the Paraná River oxbow lake. Litterfall was collected biweekly for 4 years that represents different rainfall and hydrologic regimes of the Paraná River including flood and prolonged drought: 1996–1997 (PA), 1999–2000 (PB), 2005–2006 (PC) and 2007–2008 (PD). To analyse leaf breakdown, litter bags were incubated on the forest floor during flooding conditions (FFo) and dry conditions (DFo) and in the oxbow lake (FOx). The total annual leaf litterfall were 8.97, 11.15, 10.42 and 14.43 tn ha 1 yr 1 for PA, PB, PC and PD, respectively. Our results suggest that with the increasing severity of the dry season and decreasing hydrologic connectivity, the annual leaf litterfall increases, whereas its seasonal pattern does not change. Regardless of the seasonal pattern of rainfall and hydrological regime in each study period, leaf fall occurred throughout the year, and the peak was recorded between August and October. Leaves decomposed fastest in FOx, and the leaf breakdown on the forest floor was slower during flooding conditions than in dry conditions. Regular floods are natural occurrences that do not affect the leaf production of the Paraná mixed forest, and the leaf processing depends on the oxygen concentrations. Prolonged droughts led to high annual leaf production, which is mainly processed within this forest. 2021-06-22T17:31:44Z 2021-06-22T17:31:44Z 2016 Artículo Casco, Sylvina Lorena, et al., 2016. Linking hydrologic regime, rainfall and leaf litter fall in a riverine forest within the ramsar site humedales Chaco (Argentina). Ecohydrology. Londres: Wiley, vol. 9, no. 5, p. 773-781. 1936-0584 http://repositorio.unne.edu.ar/handle/123456789/28199 eng openAccess http://creativecommons.org/licenses/by-nc-nd/2.5/ar/ application/pdf application/pdf Wiley Ecohydrology, 2016, vol. 9, no. 5, p. 773-781.
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-184
collection RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
language Inglés
topic Leaf breakdown
Leaf production
Paraná river
South America
Subtropical riverine forests
spellingShingle Leaf breakdown
Leaf production
Paraná river
South America
Subtropical riverine forests
Casco, Sylvina Lorena
Galassi, María E.
Mari, Eliana Karina Alejandra
Poi, Alicia Susana Guadalupe
Neiff, Juan José
Linking hydrologic regime, rainfall and leaf litter fall in a riverine forest within the ramsar site humedales Chaco (Argentina)
topic_facet Leaf breakdown
Leaf production
Paraná river
South America
Subtropical riverine forests
description The input of leaf litter from riparian vegetation could be affected by changes in precipitation and modifications to the hydrological regime. We analyse the pattern of leaf litterfall at the community scale as well as the breakdown rate in a mixed gallery forest that covers the levees of the Paraná River oxbow lake. Litterfall was collected biweekly for 4 years that represents different rainfall and hydrologic regimes of the Paraná River including flood and prolonged drought: 1996–1997 (PA), 1999–2000 (PB), 2005–2006 (PC) and 2007–2008 (PD). To analyse leaf breakdown, litter bags were incubated on the forest floor during flooding conditions (FFo) and dry conditions (DFo) and in the oxbow lake (FOx). The total annual leaf litterfall were 8.97, 11.15, 10.42 and 14.43 tn ha 1 yr 1 for PA, PB, PC and PD, respectively. Our results suggest that with the increasing severity of the dry season and decreasing hydrologic connectivity, the annual leaf litterfall increases, whereas its seasonal pattern does not change. Regardless of the seasonal pattern of rainfall and hydrological regime in each study period, leaf fall occurred throughout the year, and the peak was recorded between August and October. Leaves decomposed fastest in FOx, and the leaf breakdown on the forest floor was slower during flooding conditions than in dry conditions. Regular floods are natural occurrences that do not affect the leaf production of the Paraná mixed forest, and the leaf processing depends on the oxygen concentrations. Prolonged droughts led to high annual leaf production, which is mainly processed within this forest.
format Artículo
author Casco, Sylvina Lorena
Galassi, María E.
Mari, Eliana Karina Alejandra
Poi, Alicia Susana Guadalupe
Neiff, Juan José
author_facet Casco, Sylvina Lorena
Galassi, María E.
Mari, Eliana Karina Alejandra
Poi, Alicia Susana Guadalupe
Neiff, Juan José
author_sort Casco, Sylvina Lorena
title Linking hydrologic regime, rainfall and leaf litter fall in a riverine forest within the ramsar site humedales Chaco (Argentina)
title_short Linking hydrologic regime, rainfall and leaf litter fall in a riverine forest within the ramsar site humedales Chaco (Argentina)
title_full Linking hydrologic regime, rainfall and leaf litter fall in a riverine forest within the ramsar site humedales Chaco (Argentina)
title_fullStr Linking hydrologic regime, rainfall and leaf litter fall in a riverine forest within the ramsar site humedales Chaco (Argentina)
title_full_unstemmed Linking hydrologic regime, rainfall and leaf litter fall in a riverine forest within the ramsar site humedales Chaco (Argentina)
title_sort linking hydrologic regime, rainfall and leaf litter fall in a riverine forest within the ramsar site humedales chaco (argentina)
publisher Wiley
publishDate 2021
url http://repositorio.unne.edu.ar/handle/123456789/28199
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