Rainfall patterns and the contribution of litter in the caatinga dry tropical forest

The present study was designed to investigate the dynamics of rainfall patterns on the production and rate of decomposition of litter in the caatinga biome. To this end, a data series which had been recorded over 30 years (1981-2010) was used; the indicators taken into consideration being the irregu...

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Detalles Bibliográficos
Autores: Salgado, Eveline, Andrade, Eunice, Hevia, Joaquín, Nunes, Edson, Rodrigues, Meilla Marielle
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2015
País:Brasil
Institución:Universidade Federal do Ceará (UFC)
Repositorio:Revista ciência agronômica (Online)
Idioma:inglés
OAI Identifier:oai:periodicos.ufc:article/84571
Acceso en línea:http://periodicos.ufc.br/revistacienciaagronomica/article/view/84571
Access Level:acceso abierto
Palabra clave:Rainfall indices
Droughts
Caatinga biome
Decomposition of litter
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spelling Rainfall patterns and the contribution of litter in the caatinga dry tropical forestRainfall indices Droughts Caatinga biome Decomposition of litterThe present study was designed to investigate the dynamics of rainfall patterns on the production and rate of decomposition of litter in the caatinga biome. To this end, a data series which had been recorded over 30 years (1981-2010) was used; the indicators taken into consideration being the irregular rainfall index, humidity index and consecutive wet and dry days. Litter was collected monthly over a period of two years (2009-2010) at 20 different locations, and totalled 480 samples. Samples were taken from all live individuals with a stem diameter of ≥0.03 m and a height of ≥1 m: 562 individuals in 25 recorded species were identified. The annual irregular rainfall index, calculated from the series, was 8.45, with a maximum precipitation of 1,763.9 mm (1985) and a minimum of 208.8 mm (1983). The difference in annual rainfall during 2009/2010 was 787.9 mm, 2010 showing greater temporal variability when compared to 2009. Using the humidity index, these years were classified as very wet and very dry respectively.  The total annual rainfall influenced the annual production of litter, with 6034.22 kg ha-1 and 3311.96 kg ha-1 for 2009 and 2010 respectively. The temporal distribution of rainfall brings forward leaf senescence. In 2010 eight dry spells were recorded, and those that occurred in May and June particularly caused the leaves to fall earlier by almost 60 days, demonstrating that the distribution of rainfall over time speeds up the aging of leaves.Revista Ciência Agronômica2015-02-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://periodicos.ufc.br/revistacienciaagronomica/article/view/84571Revista Ciência Agronômica; v. 46 n. 2 (2015)1806-66900045-6888reponame:Revista ciência agronômica (Online)instname:Universidade Federal do Ceará (UFC)instacron:UFCenghttp://periodicos.ufc.br/revistacienciaagronomica/article/view/84571/228723info:eu-repo/semantics/openAccessSalgado, EvelineAndrade, EuniceHevia, JoaquínNunes, EdsonRodrigues, Meilla Marielle2023-05-08T13:29:34Zoai:periodicos.ufc:article/84571Revistahttps://periodicos.ufc.br/revistacienciaagronomicaPUBhttps://periodicos.ufc.br/revistacienciaagronomica/oai||alekdutra@ufc.br|| ccarev@ufc.br1806-66900045-6888opendoar:2023-05-08T13:29:34Revista ciência agronômica (Online) - Universidade Federal do Ceará (UFC)false
dc.title.none.fl_str_mv Rainfall patterns and the contribution of litter in the caatinga dry tropical forest
title Rainfall patterns and the contribution of litter in the caatinga dry tropical forest
spellingShingle Rainfall patterns and the contribution of litter in the caatinga dry tropical forest
Salgado, Eveline
Rainfall indices
Droughts
Caatinga biome
Decomposition of litter
title_short Rainfall patterns and the contribution of litter in the caatinga dry tropical forest
title_full Rainfall patterns and the contribution of litter in the caatinga dry tropical forest
title_fullStr Rainfall patterns and the contribution of litter in the caatinga dry tropical forest
title_full_unstemmed Rainfall patterns and the contribution of litter in the caatinga dry tropical forest
title_sort Rainfall patterns and the contribution of litter in the caatinga dry tropical forest
dc.creator.none.fl_str_mv Salgado, Eveline
Andrade, Eunice
Hevia, Joaquín
Nunes, Edson
Rodrigues, Meilla Marielle
author Salgado, Eveline
author_facet Salgado, Eveline
Andrade, Eunice
Hevia, Joaquín
Nunes, Edson
Rodrigues, Meilla Marielle
author_role author
author2 Andrade, Eunice
Hevia, Joaquín
Nunes, Edson
Rodrigues, Meilla Marielle
author2_role author
author
author
author
dc.subject.por.fl_str_mv Rainfall indices
Droughts
Caatinga biome
Decomposition of litter
topic Rainfall indices
Droughts
Caatinga biome
Decomposition of litter
description The present study was designed to investigate the dynamics of rainfall patterns on the production and rate of decomposition of litter in the caatinga biome. To this end, a data series which had been recorded over 30 years (1981-2010) was used; the indicators taken into consideration being the irregular rainfall index, humidity index and consecutive wet and dry days. Litter was collected monthly over a period of two years (2009-2010) at 20 different locations, and totalled 480 samples. Samples were taken from all live individuals with a stem diameter of ≥0.03 m and a height of ≥1 m: 562 individuals in 25 recorded species were identified. The annual irregular rainfall index, calculated from the series, was 8.45, with a maximum precipitation of 1,763.9 mm (1985) and a minimum of 208.8 mm (1983). The difference in annual rainfall during 2009/2010 was 787.9 mm, 2010 showing greater temporal variability when compared to 2009. Using the humidity index, these years were classified as very wet and very dry respectively.  The total annual rainfall influenced the annual production of litter, with 6034.22 kg ha-1 and 3311.96 kg ha-1 for 2009 and 2010 respectively. The temporal distribution of rainfall brings forward leaf senescence. In 2010 eight dry spells were recorded, and those that occurred in May and June particularly caused the leaves to fall earlier by almost 60 days, demonstrating that the distribution of rainfall over time speeds up the aging of leaves.
publishDate 2015
dc.date.none.fl_str_mv 2015-02-11
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://periodicos.ufc.br/revistacienciaagronomica/article/view/84571
url http://periodicos.ufc.br/revistacienciaagronomica/article/view/84571
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv http://periodicos.ufc.br/revistacienciaagronomica/article/view/84571/228723
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Revista Ciência Agronômica
publisher.none.fl_str_mv Revista Ciência Agronômica
dc.source.none.fl_str_mv Revista Ciência Agronômica; v. 46 n. 2 (2015)
1806-6690
0045-6888
reponame:Revista ciência agronômica (Online)
instname:Universidade Federal do Ceará (UFC)
instacron:UFC
instname_str Universidade Federal do Ceará (UFC)
instacron_str UFC
institution UFC
reponame_str Revista ciência agronômica (Online)
collection Revista ciência agronômica (Online)
repository.name.fl_str_mv Revista ciência agronômica (Online) - Universidade Federal do Ceará (UFC)
repository.mail.fl_str_mv ||alekdutra@ufc.br|| ccarev@ufc.br
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