Fire passage on geomorphic fractures in Cerrado: effect on vegetation

Detalhes bibliográficos
Autor(a) principal: Santana, Otacílio Antunes
Data de Publicação: 2016
Outros Autores: Encinas, José Marcelo Imaña, Silveira, Flávio Luiz de Souza
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Pesquisa Florestal Brasileira (Online)
Texto Completo: https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/885
Resumo: Geomorphic fracture is a natural geologic formation that sometimes forms a deep fissure in the rock with the establishment of soil and vegetation. The objective of this work was to analyze vegetation within geomorphic fractures under the effect of wildfire passage. The biometric variables evaluated before and after fire passage were: diameter, height, leaf area index, timber volume, grass biomass, number of trees and shrubs and of species. Results (in fractures) were compared to adjacent areas (control). The effect of wildfire passage on vegetation within geomorphic fractures was not significant because fire followed plant biomass bed and when it met the fracture (wetter), it changed from soil surface to canopy surface (jump fire effect), affecting without significance the number of plants or species; so, fracture could be plants refuge against fire passage. We could infer in our experimental model that quality of plant biomass bed could be more significant than quantity, and microclimate variability recruits plants to the refuge (geomorphic fracture).
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spelling Fire passage on geomorphic fractures in Cerrado: effect on vegetationPassagem do fogo sobre fraturas geomórficas no Cerrado: efeitos sobre a vegetaçãoBiogeomorphologyFire ecologyDry periodBiogeomorfologiaEcologia do fogoSecaGeomorphic fracture is a natural geologic formation that sometimes forms a deep fissure in the rock with the establishment of soil and vegetation. The objective of this work was to analyze vegetation within geomorphic fractures under the effect of wildfire passage. The biometric variables evaluated before and after fire passage were: diameter, height, leaf area index, timber volume, grass biomass, number of trees and shrubs and of species. Results (in fractures) were compared to adjacent areas (control). The effect of wildfire passage on vegetation within geomorphic fractures was not significant because fire followed plant biomass bed and when it met the fracture (wetter), it changed from soil surface to canopy surface (jump fire effect), affecting without significance the number of plants or species; so, fracture could be plants refuge against fire passage. We could infer in our experimental model that quality of plant biomass bed could be more significant than quantity, and microclimate variability recruits plants to the refuge (geomorphic fracture).A fratura geomórfica é uma formação geológica natural, que em alguns casos forma uma fissura profunda na rocha, com o estabelecimento de solo e vegetação. O objetivo desse trabalho foi analisar a vegetação dentro das fraturas geomórficas sobre o efeito da passagem do fogo. Para isso, as seguintes variáveis biométricas foram avaliadas: diâmetro, altura, índice de área foliar, volume de madeira, biomassa herbácea, número de indivíduos e de espécies arbóreas e arbustivas, antes e depois da passagem do fogo. Esses dados foram comparados com as áreas adjacentes às fraturas (controle). O efeito da passagem do fogo sob a vegetação dentro da fratura geomórfica não foi significativa, pois o fogo seguiu a superfície do solo (cama de fogo formada pela biomassa das plantas) e quando encontrou com a fratura (mais úmida) mudou da superfície do solo para o dossel (pelo efeito de saltar do fogo), afetando não significativamente o número de indivíduos e espécies vegetais; então, a fratura poderia ser um refúgio para as plantas contra a passagem do fogo. Pode-se inferir em nosso modelo experimental de que a qualidade da cama de biomassa vegetal poderia ser mais importante do que a quantidade, e a variabilidade do microclima recruta as plantas para o refúgio (fratura geomórfica).Embrapa Florestas2016-12-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/88510.4336/2016.pfb.36.88.885Pesquisa Florestal Brasileira; v. 36 n. 88 (2016): out./dez.; 327-337Pesquisa Florestal Brasileira; Vol. 36 No. 88 (2016): out./dez.; 327-3371983-26051809-3647reponame:Pesquisa Florestal Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAenghttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/885/523Copyright (c) 2016 Otacílio Antunes Santana, José Marcelo Imaña Encinas, Flávio Luiz de Souza Silveirahttps://creativecommons.org/licenses/by-nc-nd/4.0info:eu-repo/semantics/openAccessSantana, Otacílio AntunesEncinas, José Marcelo ImañaSilveira, Flávio Luiz de Souza2017-04-28T14:13:33Zoai:pfb.cnpf.embrapa.br/pfb:article/885Revistahttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/PUBhttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/oaipfb@embrapa.br || revista.pfb@gmail.com || patricia.mattos@embrapa.br1983-26051809-3647opendoar:2017-04-28T14:13:33Pesquisa Florestal Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Fire passage on geomorphic fractures in Cerrado: effect on vegetation
Passagem do fogo sobre fraturas geomórficas no Cerrado: efeitos sobre a vegetação
title Fire passage on geomorphic fractures in Cerrado: effect on vegetation
spellingShingle Fire passage on geomorphic fractures in Cerrado: effect on vegetation
Santana, Otacílio Antunes
Biogeomorphology
Fire ecology
Dry period
Biogeomorfologia
Ecologia do fogo
Seca
title_short Fire passage on geomorphic fractures in Cerrado: effect on vegetation
title_full Fire passage on geomorphic fractures in Cerrado: effect on vegetation
title_fullStr Fire passage on geomorphic fractures in Cerrado: effect on vegetation
title_full_unstemmed Fire passage on geomorphic fractures in Cerrado: effect on vegetation
title_sort Fire passage on geomorphic fractures in Cerrado: effect on vegetation
author Santana, Otacílio Antunes
author_facet Santana, Otacílio Antunes
Encinas, José Marcelo Imaña
Silveira, Flávio Luiz de Souza
author_role author
author2 Encinas, José Marcelo Imaña
Silveira, Flávio Luiz de Souza
author2_role author
author
dc.contributor.author.fl_str_mv Santana, Otacílio Antunes
Encinas, José Marcelo Imaña
Silveira, Flávio Luiz de Souza
dc.subject.por.fl_str_mv Biogeomorphology
Fire ecology
Dry period
Biogeomorfologia
Ecologia do fogo
Seca
topic Biogeomorphology
Fire ecology
Dry period
Biogeomorfologia
Ecologia do fogo
Seca
description Geomorphic fracture is a natural geologic formation that sometimes forms a deep fissure in the rock with the establishment of soil and vegetation. The objective of this work was to analyze vegetation within geomorphic fractures under the effect of wildfire passage. The biometric variables evaluated before and after fire passage were: diameter, height, leaf area index, timber volume, grass biomass, number of trees and shrubs and of species. Results (in fractures) were compared to adjacent areas (control). The effect of wildfire passage on vegetation within geomorphic fractures was not significant because fire followed plant biomass bed and when it met the fracture (wetter), it changed from soil surface to canopy surface (jump fire effect), affecting without significance the number of plants or species; so, fracture could be plants refuge against fire passage. We could infer in our experimental model that quality of plant biomass bed could be more significant than quantity, and microclimate variability recruits plants to the refuge (geomorphic fracture).
publishDate 2016
dc.date.none.fl_str_mv 2016-12-30
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://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/885
10.4336/2016.pfb.36.88.885
url https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/885
identifier_str_mv 10.4336/2016.pfb.36.88.885
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/885/523
dc.rights.driver.fl_str_mv https://creativecommons.org/licenses/by-nc-nd/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Embrapa Florestas
publisher.none.fl_str_mv Embrapa Florestas
dc.source.none.fl_str_mv Pesquisa Florestal Brasileira; v. 36 n. 88 (2016): out./dez.; 327-337
Pesquisa Florestal Brasileira; Vol. 36 No. 88 (2016): out./dez.; 327-337
1983-2605
1809-3647
reponame:Pesquisa Florestal Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Florestal Brasileira (Online)
collection Pesquisa Florestal Brasileira (Online)
repository.name.fl_str_mv Pesquisa Florestal Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pfb@embrapa.br || revista.pfb@gmail.com || patricia.mattos@embrapa.br
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