Ecological implications of fine-scale fire patchiness and severity in tropical savannas of northern Australia

Detalhes bibliográficos
Autor(a) principal: Oliveira, Sofia L.J.
Data de Publicação: 2015
Outros Autores: Campagnolo, Manuel, Price, Owen F., Edwards, Andrew C., Russel-Smith, Jeremy, Pereira, J.M.C.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.5/13810
Resumo: Research Article
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spelling Ecological implications of fine-scale fire patchiness and severity in tropical savannas of northern Australiabiodiversityfire patchinessfire patternsfire-sensitive plantsfire severityNorthern Australia savannasseasonunburned patchvegetation communitiesResearch ArticleUnderstanding fine-scale fire patchiness has significant implications for ecological processes and biodiversity conservation. It can affect local extinction of and recolonisation by relatively immobile fauna and poorly seed-dispersed flora in fire-affected areas. This study assesses fine-scale fire patchiness and severity, and associated implications for biodiversity, in north Australian tropical savanna systems. We used line transects to sample burning patterns of ground layer vegetation in different seasons and vegetation structure types, within the perimeter of 35 fires that occurred between 2009 and 2011. We evaluated two main fire characteristics: patchiness (patch density and mean patch length) and severity (inferred from char and scorch heights, and char and ash proportions). The mean burned area of ground vegetation was 83 % in the early dry season (EDS: May to July) and 93 % in the late dry season (LDS: August to November). LDS fires were less patchy (smaller and fewer unburned patches), and had higher fire severity (higher mean char and scorch heights, and twice the proportion of ash) than EDS fires. Fire patchiness varied among vegetation types, declining under more open canopy structure. The relationship between burned area and fire severity depended on season, being strongly correlated in the EDS and uncorrelated in the LDS. Simulations performed to understand the implications of patchiness on the population dynamics of fire-interval sensitive plant species showed that small amounts of patchiness substantially enhance survival. Our results indicate that the ecological impacts of high frequency fires on firesensitive regional biodiversity elements are likely to be lower than has been predicted from remotely sensed studies that are based on assumptions of homogeneous burningRepositório da Universidade de LisboaOliveira, Sofia L.J.Campagnolo, ManuelPrice, Owen F.Edwards, Andrew C.Russel-Smith, JeremyPereira, J.M.C.2017-06-27T13:58:51Z20152015-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.5/13810engOliveira, S.L.J., M.L. Campagnolo, O.F. Price, A.C. Edwards, J. Russell-Smith, and J.M.C. Pereira. Ecological implications of fine-scale fire patchiness and severity in tropical savannas of northern Australia. Fire Ecology 11(1): 10–3110.4996/fireecology.1101010info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-03-06T14:43:53Zoai:www.repository.utl.pt:10400.5/13810Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T16:59:44.290999Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Ecological implications of fine-scale fire patchiness and severity in tropical savannas of northern Australia
title Ecological implications of fine-scale fire patchiness and severity in tropical savannas of northern Australia
spellingShingle Ecological implications of fine-scale fire patchiness and severity in tropical savannas of northern Australia
Oliveira, Sofia L.J.
biodiversity
fire patchiness
fire patterns
fire-sensitive plants
fire severity
Northern Australia savannas
season
unburned patch
vegetation communities
title_short Ecological implications of fine-scale fire patchiness and severity in tropical savannas of northern Australia
title_full Ecological implications of fine-scale fire patchiness and severity in tropical savannas of northern Australia
title_fullStr Ecological implications of fine-scale fire patchiness and severity in tropical savannas of northern Australia
title_full_unstemmed Ecological implications of fine-scale fire patchiness and severity in tropical savannas of northern Australia
title_sort Ecological implications of fine-scale fire patchiness and severity in tropical savannas of northern Australia
author Oliveira, Sofia L.J.
author_facet Oliveira, Sofia L.J.
Campagnolo, Manuel
Price, Owen F.
Edwards, Andrew C.
Russel-Smith, Jeremy
Pereira, J.M.C.
author_role author
author2 Campagnolo, Manuel
Price, Owen F.
Edwards, Andrew C.
Russel-Smith, Jeremy
Pereira, J.M.C.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Oliveira, Sofia L.J.
Campagnolo, Manuel
Price, Owen F.
Edwards, Andrew C.
Russel-Smith, Jeremy
Pereira, J.M.C.
dc.subject.por.fl_str_mv biodiversity
fire patchiness
fire patterns
fire-sensitive plants
fire severity
Northern Australia savannas
season
unburned patch
vegetation communities
topic biodiversity
fire patchiness
fire patterns
fire-sensitive plants
fire severity
Northern Australia savannas
season
unburned patch
vegetation communities
description Research Article
publishDate 2015
dc.date.none.fl_str_mv 2015
2015-01-01T00:00:00Z
2017-06-27T13:58:51Z
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://hdl.handle.net/10400.5/13810
url http://hdl.handle.net/10400.5/13810
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Oliveira, S.L.J., M.L. Campagnolo, O.F. Price, A.C. Edwards, J. Russell-Smith, and J.M.C. Pereira. Ecological implications of fine-scale fire patchiness and severity in tropical savannas of northern Australia. Fire Ecology 11(1): 10–31
10.4996/fireecology.1101010
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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