LEAF LITTER DECOMPOSITION IN NATIVE FOREST, PLANTATION OF Pterogyne nitens AND Eucalyptus urophylla IN SOUTHWESTERN BAHIA
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Ciência Florestal (Online) |
Texto Completo: | https://periodicos.ufsm.br/cienciaflorestal/article/view/25105 |
Resumo: | The decomposition process regulates the accumulation of litter and nutrient cycling in forest ecosystems, being central to its maintenance. The objective of this study was to evaluate the dynamics of leaf litter decomposition in three forest ecosystems (semideciduous forest Montana and homogeneous stands of Pterogyne nitens Tul. and Eucalyptus urophylla ST Blake), located in Vitória da Conquista, Bahia, Brazil. To evaluate the decomposition, newly fallen leaves on the ground of trees and shrubs in each of the studied toppings were collected. The sheets were dried at 65 °C, and thereafter, 10 g portions were weighed and placed in litter bags, which were randomly distributed on the surface of the forest floor in each of the areas studied. Five litter bags at random were collected after 30, 60, 90, 120, 150 and 180 days of installation. After collection, the material contained in each litter bag was subjected to drying in an oven at 65 °C and weighed. Based on the obtained masses were estimated the percentage of the remaining mass, the rate of decomposition (k) and half-life time of the litter (t1/2). For chemical characterization three subsamples were separated from the dried leaf litter, which were ground and analyzed by determination of the total nitrogen, carbon, polyphenols, lignin and cellulose. The decomposition was related to environmental variables (precipitation, temperature and humidity) and the microenvironment (temperature and soil moisture).The total accumulated litter varied significantly between the settlements studied, the highest value was observed in the area of Eucalyptus urophylla (12,7 Mg ha-1), followed by native forest (6,9 Mg ha-1) and Pterogyne nitens (1,1 Mg ha-1). At the end of the six months of the experiment, Eucalyptus urophylla showed the greatest remaining mass (73,6%), followed by native forest (67,8%) and Pterogyne nitens (46,3%). The decomposition constant (k) was higher in litter of Pterogyne nitens (0,0054 g g-1 day), with lower values for native forest (0,0016 g g-1 day) and Eucalyptus urophylla (0,0015 g g-1day). The rate of decomposition of leaf litter of the peopling of Pterogyne nitens is in a superior position in relation to rates of native forest and stand of Eucalyptus urophylla, which provides the largest species ability to recycle organic matter and nutrients. The decomposition process in the studied ecosystems is influenced not only by the quality of the litter but also by the quality of their microenvironment. |
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LEAF LITTER DECOMPOSITION IN NATIVE FOREST, PLANTATION OF Pterogyne nitens AND Eucalyptus urophylla IN SOUTHWESTERN BAHIADECOMPOSIÇÃO DA SERAPILHEIRA FOLIAR DE FLORESTA NATIVA E PLANTIOS DE Pterogyne nitens E Eucalyptus urophylla NO SUDOESTE DA BAHIAvegetable residuesleafforest ecosystemsorganic matterresíduos vegetaisecossistemas florestaismatéria orgânica.The decomposition process regulates the accumulation of litter and nutrient cycling in forest ecosystems, being central to its maintenance. The objective of this study was to evaluate the dynamics of leaf litter decomposition in three forest ecosystems (semideciduous forest Montana and homogeneous stands of Pterogyne nitens Tul. and Eucalyptus urophylla ST Blake), located in Vitória da Conquista, Bahia, Brazil. To evaluate the decomposition, newly fallen leaves on the ground of trees and shrubs in each of the studied toppings were collected. The sheets were dried at 65 °C, and thereafter, 10 g portions were weighed and placed in litter bags, which were randomly distributed on the surface of the forest floor in each of the areas studied. Five litter bags at random were collected after 30, 60, 90, 120, 150 and 180 days of installation. After collection, the material contained in each litter bag was subjected to drying in an oven at 65 °C and weighed. Based on the obtained masses were estimated the percentage of the remaining mass, the rate of decomposition (k) and half-life time of the litter (t1/2). For chemical characterization three subsamples were separated from the dried leaf litter, which were ground and analyzed by determination of the total nitrogen, carbon, polyphenols, lignin and cellulose. The decomposition was related to environmental variables (precipitation, temperature and humidity) and the microenvironment (temperature and soil moisture).The total accumulated litter varied significantly between the settlements studied, the highest value was observed in the area of Eucalyptus urophylla (12,7 Mg ha-1), followed by native forest (6,9 Mg ha-1) and Pterogyne nitens (1,1 Mg ha-1). At the end of the six months of the experiment, Eucalyptus urophylla showed the greatest remaining mass (73,6%), followed by native forest (67,8%) and Pterogyne nitens (46,3%). The decomposition constant (k) was higher in litter of Pterogyne nitens (0,0054 g g-1 day), with lower values for native forest (0,0016 g g-1 day) and Eucalyptus urophylla (0,0015 g g-1day). The rate of decomposition of leaf litter of the peopling of Pterogyne nitens is in a superior position in relation to rates of native forest and stand of Eucalyptus urophylla, which provides the largest species ability to recycle organic matter and nutrients. The decomposition process in the studied ecosystems is influenced not only by the quality of the litter but also by the quality of their microenvironment.O processo de decomposição regula o acúmulo de serapilheira e a ciclagem de nutrientes em ecossistemas florestais, sendo fundamental para sua manutenção. O objetivo deste trabalho foi avaliar a dinâmica de decomposição foliar em uma Floresta Estacional Semidecidual Montana e em plantios homogêneos de Pterogyne nitens Tul. e de Eucalyptus urophylla S. T. Blake, localizados no município de Vitória da Conquista, Bahia, Brasil. Para avaliação da decomposição, foram coletadas folhas recém-caídas sobre o solo de árvores e arbustos em cada uma das coberturas estudadas. As folhas foram secas em estufa a 65oC e, após isso, porções de 10 g foram pesadas e colocadas em litter bags, que foram distribuídos aleatoriamente na superfície do piso florestal em cada uma das áreas estudadas. Realizaram-se coletas de cinco litter bags de forma aleatória após 30, 60, 90, 120, 150 e 180 dias da instalação. Com base nas massas obtidas, foram estimados o percentual de massa remanescente, as taxas de decomposição (k) e o tempo de meia-vida do folhedo (t1/2). Para caracterização química, foram separadas três subamostras do material foliar seco, que foram moídas e analisadas, determinando-se os teores de nitrogênio total, carbono, polifenóis, lignina e celulose. Os dados de decomposição foram relacionados com variáveis ambientais (precipitação, temperatura e umidade do ar) e microambientais (temperatura e umidade do solo) referentes ao mês de coleta. O acúmulo total de serapilheira variou entre as áreas estudadas, o maior valor foi observado no plantio de Eucalyptus urophylla (12,7 Mg ha-1), seguido pela floresta nativa (6,9 Mg ha-1) e plantio de Pterogyne nitens (1,1 Mg ha-1). Ao final dos seis meses de avaliação, o Eucalyptus urophylla apresentou a maior massa remanescente (73,6%), seguido da floresta nativa (67,8%) e Pterogyne nitens (46,3%). A constante de decomposição (k) foi maior para a Pterogyne nitens (0,0054 g g-1dia), com menores valores para floresta nativa (0,0016 g g-1dia) e Eucalyptus urophylla (0,0015 g g-1dia). A taxa de decomposição da serapilheira foliar do povoamento de Pterogyne nitens situa-se em uma posição superior em relação às taxas da floresta nativa e do povoamento de Eucalyptus urophylla, o que proporciona à espécie maior capacidade de reciclar matéria orgânica e nutrientes. O processo de decomposição nos ecossistemas estudados é influenciado não apenas pela qualidade do folhedo, mas também pela qualidade do seu microambiente.Universidade Federal de Santa Maria2016-12-28info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufsm.br/cienciaflorestal/article/view/2510510.5902/1980509825105Ciência Florestal; Vol. 26 No. 4 (2016); 1141-1153Ciência Florestal; v. 26 n. 4 (2016); 1141-11531980-50980103-9954reponame:Ciência Florestal (Online)instname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMporhttps://periodicos.ufsm.br/cienciaflorestal/article/view/25105/pdfCopyright (c) 2016 Ciência Florestalinfo:eu-repo/semantics/openAccessPinto, Heloísa Cintra AlvesBarreto, Patrícia Anjos BittencourtRodrigues, Emanuela Forestieri da Gamade Oliveira, Francisco Garcia R. Barbosade Paula, AlessandroAmaral, Aguiberto Ranulfo2017-04-05T17:02:40Zoai:ojs.pkp.sfu.ca:article/25105Revistahttp://www.ufsm.br/cienciaflorestal/ONGhttps://old.scielo.br/oai/scielo-oai.php||cienciaflorestal@ufsm.br|| cienciaflorestal@gmail.com|| cf@smail.ufsm.br1980-50980103-9954opendoar:2017-04-05T17:02:40Ciência Florestal (Online) - Universidade Federal de Santa Maria (UFSM)false |
dc.title.none.fl_str_mv |
LEAF LITTER DECOMPOSITION IN NATIVE FOREST, PLANTATION OF Pterogyne nitens AND Eucalyptus urophylla IN SOUTHWESTERN BAHIA DECOMPOSIÇÃO DA SERAPILHEIRA FOLIAR DE FLORESTA NATIVA E PLANTIOS DE Pterogyne nitens E Eucalyptus urophylla NO SUDOESTE DA BAHIA |
title |
LEAF LITTER DECOMPOSITION IN NATIVE FOREST, PLANTATION OF Pterogyne nitens AND Eucalyptus urophylla IN SOUTHWESTERN BAHIA |
spellingShingle |
LEAF LITTER DECOMPOSITION IN NATIVE FOREST, PLANTATION OF Pterogyne nitens AND Eucalyptus urophylla IN SOUTHWESTERN BAHIA Pinto, Heloísa Cintra Alves vegetable residues leaf forest ecosystems organic matter resíduos vegetais ecossistemas florestais matéria orgânica. |
title_short |
LEAF LITTER DECOMPOSITION IN NATIVE FOREST, PLANTATION OF Pterogyne nitens AND Eucalyptus urophylla IN SOUTHWESTERN BAHIA |
title_full |
LEAF LITTER DECOMPOSITION IN NATIVE FOREST, PLANTATION OF Pterogyne nitens AND Eucalyptus urophylla IN SOUTHWESTERN BAHIA |
title_fullStr |
LEAF LITTER DECOMPOSITION IN NATIVE FOREST, PLANTATION OF Pterogyne nitens AND Eucalyptus urophylla IN SOUTHWESTERN BAHIA |
title_full_unstemmed |
LEAF LITTER DECOMPOSITION IN NATIVE FOREST, PLANTATION OF Pterogyne nitens AND Eucalyptus urophylla IN SOUTHWESTERN BAHIA |
title_sort |
LEAF LITTER DECOMPOSITION IN NATIVE FOREST, PLANTATION OF Pterogyne nitens AND Eucalyptus urophylla IN SOUTHWESTERN BAHIA |
author |
Pinto, Heloísa Cintra Alves |
author_facet |
Pinto, Heloísa Cintra Alves Barreto, Patrícia Anjos Bittencourt Rodrigues, Emanuela Forestieri da Gama de Oliveira, Francisco Garcia R. Barbosa de Paula, Alessandro Amaral, Aguiberto Ranulfo |
author_role |
author |
author2 |
Barreto, Patrícia Anjos Bittencourt Rodrigues, Emanuela Forestieri da Gama de Oliveira, Francisco Garcia R. Barbosa de Paula, Alessandro Amaral, Aguiberto Ranulfo |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Pinto, Heloísa Cintra Alves Barreto, Patrícia Anjos Bittencourt Rodrigues, Emanuela Forestieri da Gama de Oliveira, Francisco Garcia R. Barbosa de Paula, Alessandro Amaral, Aguiberto Ranulfo |
dc.subject.por.fl_str_mv |
vegetable residues leaf forest ecosystems organic matter resíduos vegetais ecossistemas florestais matéria orgânica. |
topic |
vegetable residues leaf forest ecosystems organic matter resíduos vegetais ecossistemas florestais matéria orgânica. |
description |
The decomposition process regulates the accumulation of litter and nutrient cycling in forest ecosystems, being central to its maintenance. The objective of this study was to evaluate the dynamics of leaf litter decomposition in three forest ecosystems (semideciduous forest Montana and homogeneous stands of Pterogyne nitens Tul. and Eucalyptus urophylla ST Blake), located in Vitória da Conquista, Bahia, Brazil. To evaluate the decomposition, newly fallen leaves on the ground of trees and shrubs in each of the studied toppings were collected. The sheets were dried at 65 °C, and thereafter, 10 g portions were weighed and placed in litter bags, which were randomly distributed on the surface of the forest floor in each of the areas studied. Five litter bags at random were collected after 30, 60, 90, 120, 150 and 180 days of installation. After collection, the material contained in each litter bag was subjected to drying in an oven at 65 °C and weighed. Based on the obtained masses were estimated the percentage of the remaining mass, the rate of decomposition (k) and half-life time of the litter (t1/2). For chemical characterization three subsamples were separated from the dried leaf litter, which were ground and analyzed by determination of the total nitrogen, carbon, polyphenols, lignin and cellulose. The decomposition was related to environmental variables (precipitation, temperature and humidity) and the microenvironment (temperature and soil moisture).The total accumulated litter varied significantly between the settlements studied, the highest value was observed in the area of Eucalyptus urophylla (12,7 Mg ha-1), followed by native forest (6,9 Mg ha-1) and Pterogyne nitens (1,1 Mg ha-1). At the end of the six months of the experiment, Eucalyptus urophylla showed the greatest remaining mass (73,6%), followed by native forest (67,8%) and Pterogyne nitens (46,3%). The decomposition constant (k) was higher in litter of Pterogyne nitens (0,0054 g g-1 day), with lower values for native forest (0,0016 g g-1 day) and Eucalyptus urophylla (0,0015 g g-1day). The rate of decomposition of leaf litter of the peopling of Pterogyne nitens is in a superior position in relation to rates of native forest and stand of Eucalyptus urophylla, which provides the largest species ability to recycle organic matter and nutrients. The decomposition process in the studied ecosystems is influenced not only by the quality of the litter but also by the quality of their microenvironment. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-12-28 |
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 |
https://periodicos.ufsm.br/cienciaflorestal/article/view/25105 10.5902/1980509825105 |
url |
https://periodicos.ufsm.br/cienciaflorestal/article/view/25105 |
identifier_str_mv |
10.5902/1980509825105 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://periodicos.ufsm.br/cienciaflorestal/article/view/25105/pdf |
dc.rights.driver.fl_str_mv |
Copyright (c) 2016 Ciência Florestal info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2016 Ciência Florestal |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
dc.source.none.fl_str_mv |
Ciência Florestal; Vol. 26 No. 4 (2016); 1141-1153 Ciência Florestal; v. 26 n. 4 (2016); 1141-1153 1980-5098 0103-9954 reponame:Ciência Florestal (Online) instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
instname_str |
Universidade Federal de Santa Maria (UFSM) |
instacron_str |
UFSM |
institution |
UFSM |
reponame_str |
Ciência Florestal (Online) |
collection |
Ciência Florestal (Online) |
repository.name.fl_str_mv |
Ciência Florestal (Online) - Universidade Federal de Santa Maria (UFSM) |
repository.mail.fl_str_mv |
||cienciaflorestal@ufsm.br|| cienciaflorestal@gmail.com|| cf@smail.ufsm.br |
_version_ |
1799944131276963840 |