Formaldehyde and acetaldehyde exchange during leaf development of the Amazonian deciduous tree species Hymenaea courbaril

Detalhes bibliográficos
Autor(a) principal: Rottenberger, S.
Data de Publicação: 2005
Outros Autores: Kuhn, U., Wolf, A., Schebeske, G., Oliva, S. T., Tavares, Tânia Mascarenhas, Kesselmeier, J.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/6558
Resumo: Trabalho completo: acesso restrito, p. 2275–2279
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spelling Rottenberger, S.Kuhn, U.Wolf, A.Schebeske, G.Oliva, S. T.Tavares, Tânia MascarenhasKesselmeier, J.Rottenberger, S.Kuhn, U.Wolf, A.Schebeske, G.Oliva, S. T.Tavares, Tânia MascarenhasKesselmeier, J.2012-08-07T18:06:07Z2005-041352-2310http://www.repositorio.ufba.br/ri/handle/ri/6558v. 39, n.12Trabalho completo: acesso restrito, p. 2275–2279he effect of leaf age on the formaldehyde (HCHO) and acetaldehyde (CH3CHO) exchange pattern of the deciduous Amazonian tree species Hymenaea courbaril was investigated under field conditions. Branch enclosure measurements on senescent, young, and mature leaves showed that leaf development had a pronounced impact on the aldehyde exchange behavior with respect to both the direction and the magnitude of the exchange. The emission activity of senescent leaves was associated with a negative CO2 balance, even during daytime, indicative of a catabolic metabolism and decomposition processes leading to an increased aldehyde production within the leaf. The low exchange rates observed in young leaves were attributed to low stomatal conductance, while in mature leaves stomatal conductance and metabolic activities allowed efficient uptake. Within each leaf class the diurnal variations in the exchange of both aldehyde compounds were found to be mainly dependent on the respective ambient air concentrations. High ambient air concentrations resulted in decreased emission rates of senescent leaves and in enhanced uptake in young and mature leaves. CH3CHO compensation points decreased from 1.8 to 1.1 ppb with leaf maturation. We provide evidence that leaf-age-dependent variations in the stomatal conductance can account for the major share of differences in the CH3CHO deposition velocity. The results indicate that leaf surfaces of young and mature leaves may represent an effective additional non-stomatal sink for atmospheric aldehydes.Submitted by Bruna Lessa (lessbruna@gmail.com) on 2012-08-07T18:06:07Z No. of bitstreams: 1 (150).pdf: 292960 bytes, checksum: 067c6a17cd1cb05da1f9c168d7f3001f (MD5)Made available in DSpace on 2012-08-07T18:06:07Z (GMT). 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dc.title.pt_BR.fl_str_mv Formaldehyde and acetaldehyde exchange during leaf development of the Amazonian deciduous tree species Hymenaea courbaril
dc.title.alternative.pt_BR.fl_str_mv Atmospheric Environment
title Formaldehyde and acetaldehyde exchange during leaf development of the Amazonian deciduous tree species Hymenaea courbaril
spellingShingle Formaldehyde and acetaldehyde exchange during leaf development of the Amazonian deciduous tree species Hymenaea courbaril
Rottenberger, S.
Phenology
Carbonyls
Emission
Deposition
Deciduous tropical trees
Amazonia
title_short Formaldehyde and acetaldehyde exchange during leaf development of the Amazonian deciduous tree species Hymenaea courbaril
title_full Formaldehyde and acetaldehyde exchange during leaf development of the Amazonian deciduous tree species Hymenaea courbaril
title_fullStr Formaldehyde and acetaldehyde exchange during leaf development of the Amazonian deciduous tree species Hymenaea courbaril
title_full_unstemmed Formaldehyde and acetaldehyde exchange during leaf development of the Amazonian deciduous tree species Hymenaea courbaril
title_sort Formaldehyde and acetaldehyde exchange during leaf development of the Amazonian deciduous tree species Hymenaea courbaril
author Rottenberger, S.
author_facet Rottenberger, S.
Kuhn, U.
Wolf, A.
Schebeske, G.
Oliva, S. T.
Tavares, Tânia Mascarenhas
Kesselmeier, J.
author_role author
author2 Kuhn, U.
Wolf, A.
Schebeske, G.
Oliva, S. T.
Tavares, Tânia Mascarenhas
Kesselmeier, J.
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Rottenberger, S.
Kuhn, U.
Wolf, A.
Schebeske, G.
Oliva, S. T.
Tavares, Tânia Mascarenhas
Kesselmeier, J.
Rottenberger, S.
Kuhn, U.
Wolf, A.
Schebeske, G.
Oliva, S. T.
Tavares, Tânia Mascarenhas
Kesselmeier, J.
dc.subject.por.fl_str_mv Phenology
Carbonyls
Emission
Deposition
Deciduous tropical trees
Amazonia
topic Phenology
Carbonyls
Emission
Deposition
Deciduous tropical trees
Amazonia
description Trabalho completo: acesso restrito, p. 2275–2279
publishDate 2005
dc.date.issued.fl_str_mv 2005-04
dc.date.accessioned.fl_str_mv 2012-08-07T18:06:07Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.repositorio.ufba.br/ri/handle/ri/6558
dc.identifier.issn.none.fl_str_mv 1352-2310
dc.identifier.number.pt_BR.fl_str_mv v. 39, n.12
identifier_str_mv 1352-2310
v. 39, n.12
url http://www.repositorio.ufba.br/ri/handle/ri/6558
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.pt_BR.fl_str_mv http://dx.doi.org/10.1016/j.atmosenv.2004.12.027
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
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