Tree encroachment into savannas alters soil microbiological and chemical properties facilitating forest expansion

Detalhes bibliográficos
Autor(a) principal: Rossatto, Davi Rodrigo [UNESP]
Data de Publicação: 2016
Outros Autores: Rigobelo, Everlon Cid [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1007/s11676-016-0219-0
http://hdl.handle.net/11449/172738
Resumo: Forests have been expanding over typical savanna sites for the past 3000 years in the Neotropics. Such invasion can produce a series of environmental modifications on typical savanna; however, it remains unclear how modifications in soil properties, caused by the encroachment of woody species, facilitate the expansion of forest ecosystems under dystrophic conditions. Here we examined chemical and microbiological changes associated with tree encroachment in oxisols of a Neotropical Savanna at Assis Ecological Station, Southeastern Brazil. We predicted that tree encroachment caused by typical forest species would cause significant changes in the chemical and microbiological properties of savanna soils. Soils were sampled at Assis Ecological Station, from savanna sites differing in tree encroachment (typical, dense and forested savanna) caused by decades of fire exclusion. We analysed vegetation leaf area index and leaf litter volume deposited in the studied plots and chemical (pH, organic matter, P, K, Ca, Mg, Al, NO3 −, NH4 +) and microbiological (microbial C biomass and dehydrogenase activity) properties of soils under distinct encroachment conditions. Most soil chemical properties did not change along the tree encroachment gradient; however, total P, soil organic matter, soil microbial C and dehydrogenase activity increased from typical savanna to forested savanna. The changes in soil organic matter and dehydrogenase activity were correlated with the values of leaf area index and litter volume along the encroachment gradient. Our results demonstrate that forest species can increase carbon and phosphorus supplies in tropical savanna soils.
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spelling Tree encroachment into savannas alters soil microbiological and chemical properties facilitating forest expansionDystrophicEncroachmentForestLitterMicrobiological activityForests have been expanding over typical savanna sites for the past 3000 years in the Neotropics. Such invasion can produce a series of environmental modifications on typical savanna; however, it remains unclear how modifications in soil properties, caused by the encroachment of woody species, facilitate the expansion of forest ecosystems under dystrophic conditions. Here we examined chemical and microbiological changes associated with tree encroachment in oxisols of a Neotropical Savanna at Assis Ecological Station, Southeastern Brazil. We predicted that tree encroachment caused by typical forest species would cause significant changes in the chemical and microbiological properties of savanna soils. Soils were sampled at Assis Ecological Station, from savanna sites differing in tree encroachment (typical, dense and forested savanna) caused by decades of fire exclusion. We analysed vegetation leaf area index and leaf litter volume deposited in the studied plots and chemical (pH, organic matter, P, K, Ca, Mg, Al, NO3 −, NH4 +) and microbiological (microbial C biomass and dehydrogenase activity) properties of soils under distinct encroachment conditions. Most soil chemical properties did not change along the tree encroachment gradient; however, total P, soil organic matter, soil microbial C and dehydrogenase activity increased from typical savanna to forested savanna. The changes in soil organic matter and dehydrogenase activity were correlated with the values of leaf area index and litter volume along the encroachment gradient. Our results demonstrate that forest species can increase carbon and phosphorus supplies in tropical savanna soils.Departamento de Biologia Faculdade de Ciências Agrárias e Veterinárias Univ. Estadual Paulista UNESP Via de Acesso Prof. Paulo Donatto Castellane S/N, Vila IndustrialDepartamento de Produção Vegetal Faculdade de Ciências Agrárias e Veterinárias Univ. Estadual Paulista UNESP Via de Acesso Prof. Paulo Donatto Castellane S/N, Vila IndustrialDepartamento de Biologia Faculdade de Ciências Agrárias e Veterinárias Univ. Estadual Paulista UNESP Via de Acesso Prof. Paulo Donatto Castellane S/N, Vila IndustrialDepartamento de Produção Vegetal Faculdade de Ciências Agrárias e Veterinárias Univ. Estadual Paulista UNESP Via de Acesso Prof. Paulo Donatto Castellane S/N, Vila IndustrialUniversidade Estadual Paulista (Unesp)Rossatto, Davi Rodrigo [UNESP]Rigobelo, Everlon Cid [UNESP]2018-12-11T17:01:58Z2018-12-11T17:01:58Z2016-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1047-1054application/pdfhttp://dx.doi.org/10.1007/s11676-016-0219-0Journal of Forestry Research, v. 27, n. 5, p. 1047-1054, 2016.1993-06071007-662Xhttp://hdl.handle.net/11449/17273810.1007/s11676-016-0219-02-s2.0-849618272702-s2.0-84961827270.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Forestry Researchinfo:eu-repo/semantics/openAccess2024-06-07T13:55:46Zoai:repositorio.unesp.br:11449/172738Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:34:37.512358Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Tree encroachment into savannas alters soil microbiological and chemical properties facilitating forest expansion
title Tree encroachment into savannas alters soil microbiological and chemical properties facilitating forest expansion
spellingShingle Tree encroachment into savannas alters soil microbiological and chemical properties facilitating forest expansion
Rossatto, Davi Rodrigo [UNESP]
Dystrophic
Encroachment
Forest
Litter
Microbiological activity
title_short Tree encroachment into savannas alters soil microbiological and chemical properties facilitating forest expansion
title_full Tree encroachment into savannas alters soil microbiological and chemical properties facilitating forest expansion
title_fullStr Tree encroachment into savannas alters soil microbiological and chemical properties facilitating forest expansion
title_full_unstemmed Tree encroachment into savannas alters soil microbiological and chemical properties facilitating forest expansion
title_sort Tree encroachment into savannas alters soil microbiological and chemical properties facilitating forest expansion
author Rossatto, Davi Rodrigo [UNESP]
author_facet Rossatto, Davi Rodrigo [UNESP]
Rigobelo, Everlon Cid [UNESP]
author_role author
author2 Rigobelo, Everlon Cid [UNESP]
author2_role author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Rossatto, Davi Rodrigo [UNESP]
Rigobelo, Everlon Cid [UNESP]
dc.subject.por.fl_str_mv Dystrophic
Encroachment
Forest
Litter
Microbiological activity
topic Dystrophic
Encroachment
Forest
Litter
Microbiological activity
description Forests have been expanding over typical savanna sites for the past 3000 years in the Neotropics. Such invasion can produce a series of environmental modifications on typical savanna; however, it remains unclear how modifications in soil properties, caused by the encroachment of woody species, facilitate the expansion of forest ecosystems under dystrophic conditions. Here we examined chemical and microbiological changes associated with tree encroachment in oxisols of a Neotropical Savanna at Assis Ecological Station, Southeastern Brazil. We predicted that tree encroachment caused by typical forest species would cause significant changes in the chemical and microbiological properties of savanna soils. Soils were sampled at Assis Ecological Station, from savanna sites differing in tree encroachment (typical, dense and forested savanna) caused by decades of fire exclusion. We analysed vegetation leaf area index and leaf litter volume deposited in the studied plots and chemical (pH, organic matter, P, K, Ca, Mg, Al, NO3 −, NH4 +) and microbiological (microbial C biomass and dehydrogenase activity) properties of soils under distinct encroachment conditions. Most soil chemical properties did not change along the tree encroachment gradient; however, total P, soil organic matter, soil microbial C and dehydrogenase activity increased from typical savanna to forested savanna. The changes in soil organic matter and dehydrogenase activity were correlated with the values of leaf area index and litter volume along the encroachment gradient. Our results demonstrate that forest species can increase carbon and phosphorus supplies in tropical savanna soils.
publishDate 2016
dc.date.none.fl_str_mv 2016-10-01
2018-12-11T17:01:58Z
2018-12-11T17:01:58Z
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://dx.doi.org/10.1007/s11676-016-0219-0
Journal of Forestry Research, v. 27, n. 5, p. 1047-1054, 2016.
1993-0607
1007-662X
http://hdl.handle.net/11449/172738
10.1007/s11676-016-0219-0
2-s2.0-84961827270
2-s2.0-84961827270.pdf
url http://dx.doi.org/10.1007/s11676-016-0219-0
http://hdl.handle.net/11449/172738
identifier_str_mv Journal of Forestry Research, v. 27, n. 5, p. 1047-1054, 2016.
1993-0607
1007-662X
10.1007/s11676-016-0219-0
2-s2.0-84961827270
2-s2.0-84961827270.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal of Forestry Research
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 1047-1054
application/pdf
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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