Dissolved organic carbon in water fluxes of Eucalyptus grandis plantations in northeastern Entre Ríos Province, Argentina

Water fluxes in tree plantations and other ecosystems carry dissolved organic carbon (DOC) provided by atmospheric inputs, autotrophic and heterotrophic metabolisms and from the lysis of dead material. These compounds may be colorless or provide a yellow-to-brown color to water and may also absorb v...

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Autores principales:	Tesón,Natalia, Conzonno,Víctor H, Arturi,Marcelo F, Frangi,Jorge L
Lenguaje:	English
Publicado:	Universidad Austral de Chile, Facultad de Ciencias Forestales 2014
Materias:	DOC concentration water fluxes color Eucalyptus grandis plantations Entre Ríos (Argentina)
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002014000300003
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spelling	oai:scielo:S0717-920020140003000032015-01-09Dissolved organic carbon in water fluxes of Eucalyptus grandis plantations in northeastern Entre Ríos Province, ArgentinaTesón,NataliaConzonno,Víctor HArturi,Marcelo FFrangi,Jorge L DOC concentration water fluxes color Eucalyptus grandis plantations Entre Ríos (Argentina) Water fluxes in tree plantations and other ecosystems carry dissolved organic carbon (DOC) provided by atmospheric inputs, autotrophic and heterotrophic metabolisms and from the lysis of dead material. These compounds may be colorless or provide a yellow-to-brown color to water and may also absorb visible light due to the presence of chromophores in the chemical structure. Concentration and composition of DOC and DOC annual flux in water pathways of a Eucalyptus grandis plantation were studied in Entre Ríos, Argentina. Samples of bulk precipitation, throughfall, stemflow, litter lixiviation, surface runoff and water table were analyzed for DOC concentration and color (optical density). Regression analyses for DOC concentration vs water fluxes intensity and for DOC concentration vs color were done. A DOC circulation model was calculated using available information on water budgets fluxes. Results showed that molecular features, values and range of DOC concentrations varied among fluxes, which may be explained by factors and processes influencing water gains and losses and by composition and availability of organic matter that may be dissolved in water in contact with biomass, necromass, soil and subsoil. Regression parameters from DOC concentration vs optical density were useful for DOC chemical composition analyses and interpretation of DOC changes. Annual circulation of DOC (in kg ha-1 year-1) showed that atmospheric contribution is low (ca. 30), aboveground biomass lixiviation is about 3-4 times the atmospheric input (126.7 to 101.4), and inputs to mineral soil (374.4 to 348.0) came mainly (74 to 78 %) from litter lixiviation.info:eu-repo/semantics/openAccessUniversidad Austral de Chile, Facultad de Ciencias ForestalesBosque (Valdivia) v.35 n.3 20142014-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002014000300003en10.4067/S0717-92002014000300003
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	DOC concentration water fluxes color Eucalyptus grandis plantations Entre Ríos (Argentina)
spellingShingle	DOC concentration water fluxes color Eucalyptus grandis plantations Entre Ríos (Argentina) Tesón,Natalia Conzonno,Víctor H Arturi,Marcelo F Frangi,Jorge L Dissolved organic carbon in water fluxes of Eucalyptus grandis plantations in northeastern Entre Ríos Province, Argentina
description	Water fluxes in tree plantations and other ecosystems carry dissolved organic carbon (DOC) provided by atmospheric inputs, autotrophic and heterotrophic metabolisms and from the lysis of dead material. These compounds may be colorless or provide a yellow-to-brown color to water and may also absorb visible light due to the presence of chromophores in the chemical structure. Concentration and composition of DOC and DOC annual flux in water pathways of a Eucalyptus grandis plantation were studied in Entre Ríos, Argentina. Samples of bulk precipitation, throughfall, stemflow, litter lixiviation, surface runoff and water table were analyzed for DOC concentration and color (optical density). Regression analyses for DOC concentration vs water fluxes intensity and for DOC concentration vs color were done. A DOC circulation model was calculated using available information on water budgets fluxes. Results showed that molecular features, values and range of DOC concentrations varied among fluxes, which may be explained by factors and processes influencing water gains and losses and by composition and availability of organic matter that may be dissolved in water in contact with biomass, necromass, soil and subsoil. Regression parameters from DOC concentration vs optical density were useful for DOC chemical composition analyses and interpretation of DOC changes. Annual circulation of DOC (in kg ha-1 year-1) showed that atmospheric contribution is low (ca. 30), aboveground biomass lixiviation is about 3-4 times the atmospheric input (126.7 to 101.4), and inputs to mineral soil (374.4 to 348.0) came mainly (74 to 78 %) from litter lixiviation.
author	Tesón,Natalia Conzonno,Víctor H Arturi,Marcelo F Frangi,Jorge L
author_facet	Tesón,Natalia Conzonno,Víctor H Arturi,Marcelo F Frangi,Jorge L
author_sort	Tesón,Natalia
title	Dissolved organic carbon in water fluxes of Eucalyptus grandis plantations in northeastern Entre Ríos Province, Argentina
title_short	Dissolved organic carbon in water fluxes of Eucalyptus grandis plantations in northeastern Entre Ríos Province, Argentina
title_full	Dissolved organic carbon in water fluxes of Eucalyptus grandis plantations in northeastern Entre Ríos Province, Argentina
title_fullStr	Dissolved organic carbon in water fluxes of Eucalyptus grandis plantations in northeastern Entre Ríos Province, Argentina
title_full_unstemmed	Dissolved organic carbon in water fluxes of Eucalyptus grandis plantations in northeastern Entre Ríos Province, Argentina
title_sort	dissolved organic carbon in water fluxes of eucalyptus grandis plantations in northeastern entre ríos province, argentina
publisher	Universidad Austral de Chile, Facultad de Ciencias Forestales
publishDate	2014
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002014000300003
work_keys_str_mv	AT tesonnatalia dissolvedorganiccarboninwaterfluxesofeucalyptusgrandisplantationsinnortheasternentreriosprovinceargentina AT conzonnovictorh dissolvedorganiccarboninwaterfluxesofeucalyptusgrandisplantationsinnortheasternentreriosprovinceargentina AT arturimarcelof dissolvedorganiccarboninwaterfluxesofeucalyptusgrandisplantationsinnortheasternentreriosprovinceargentina AT frangijorgel dissolvedorganiccarboninwaterfluxesofeucalyptusgrandisplantationsinnortheasternentreriosprovinceargentina
_version_	1718444201612410880

Dissolved organic carbon in water fluxes of Eucalyptus grandis plantations in northeastern Entre Ríos Province, Argentina

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