Experimental burns in an open savanna: Greater fuel loads result in hotter fires
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1111/aec.13202 http://hdl.handle.net/11449/240213 |
Resumo: | Fire is a main disturbance structuring vegetation worldwide, but few studies have addressed differences in time since last fire and its relationship to fuel load characteristics and fire behavior in Neotropical savannas. We aimed to investigate fire behavior in a Cerrado open savanna of Central Brazil by conducting prescribed fires in areas with different fire-free intervals: one year (FI-1), two years (FI-2), and four years (FI-4). Specifically, we evaluated (1) the amount of live, dead, and total biomass (components of the fuel load); (2) fire behavior, including fire temperatures in three different heights (1 cm belowground, on the soil surface, and 50 cm aboveground), fire duration, residence time, fire intensity, rate of spread, and flame height; and (3) the relationship between soil heating, fuels, and fire by identifying the most important parameters driving soil heating. Total and dead fuel loads were greater in areas with longer fire-free intervals in comparison with areas burned the previous year, with the greatest increment to the fuel bed occurring in the first two years after fire. Greater fuel loads (consequently greater dead fuel loads) resulted in differences in belowground soil heating (-1 cm), where temperatures varied from 39 to 82°C in FI-2 plots and from 40 to 131°C in FI-4 plots; in FI-1 plots temperatures belowground varied from 29 to 68°C. Temperatures on the soil surface and 50 cm aboveground were also greater in plots with longer fire-free intervals, reaching over 400°C on the soil surface and exceeding 500°C 50 cm aboveground. Finally, amount of dead fuel was the best predictor of belowground soil heating, highlighting the importance of fuel loads, which is a key factor to be monitored in fire management plans of Cerrado open savannas. |
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Experimental burns in an open savanna: Greater fuel loads result in hotter firesCerradofire behavior fire durationfire intervalsfire temperaturesNeotropical savannaFire is a main disturbance structuring vegetation worldwide, but few studies have addressed differences in time since last fire and its relationship to fuel load characteristics and fire behavior in Neotropical savannas. We aimed to investigate fire behavior in a Cerrado open savanna of Central Brazil by conducting prescribed fires in areas with different fire-free intervals: one year (FI-1), two years (FI-2), and four years (FI-4). Specifically, we evaluated (1) the amount of live, dead, and total biomass (components of the fuel load); (2) fire behavior, including fire temperatures in three different heights (1 cm belowground, on the soil surface, and 50 cm aboveground), fire duration, residence time, fire intensity, rate of spread, and flame height; and (3) the relationship between soil heating, fuels, and fire by identifying the most important parameters driving soil heating. Total and dead fuel loads were greater in areas with longer fire-free intervals in comparison with areas burned the previous year, with the greatest increment to the fuel bed occurring in the first two years after fire. Greater fuel loads (consequently greater dead fuel loads) resulted in differences in belowground soil heating (-1 cm), where temperatures varied from 39 to 82°C in FI-2 plots and from 40 to 131°C in FI-4 plots; in FI-1 plots temperatures belowground varied from 29 to 68°C. Temperatures on the soil surface and 50 cm aboveground were also greater in plots with longer fire-free intervals, reaching over 400°C on the soil surface and exceeding 500°C 50 cm aboveground. Finally, amount of dead fuel was the best predictor of belowground soil heating, highlighting the importance of fuel loads, which is a key factor to be monitored in fire management plans of Cerrado open savannas.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação Grupo Boticário de Proteção à NaturezaFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Lab of Vegetation Ecology Universidade Estadual Paulista (UNESP) Instituto de Biociências, Av. 24-A 1515Instituto Tecnológico Vale (ITV), Rua Boaventura da Silva, 955, ParáLab of Vegetation Ecology Universidade Estadual Paulista (UNESP) Instituto de Biociências, Av. 24-A 1515Fundação Grupo Boticário de Proteção à Natureza: 0153_2011_PRFAPESP: 2015/06743-0Universidade Estadual Paulista (UNESP)Instituto Tecnológico Vale (ITV)Silva, Marina Oliveira deBorges, Marcelo Sant'AnaFernandes, Luana Gomes [UNESP]Rodrigues, Naiara Nantes [UNESP]Watanabe, Yeda FumieJoaquim, Daniel CarlinoOliveira, Clara SladeFeuchard, Viviane Luzia Silva daCyrillo, Joslaine Noely Santos Gonçalves dosMercadante, Maria Eugênia ZerlottiMonteiro, Fabio Morato [UNESP]2023-03-01T20:06:47Z2023-03-01T20:06:47Z2022-08-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1101-1112http://dx.doi.org/10.1111/aec.13202Austral Ecology, v. 47, n. 5, p. 1101-1112, 2022.1442-99931442-9985http://hdl.handle.net/11449/24021310.1111/aec.132022-s2.0-85131638231Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAustral Ecologyinfo:eu-repo/semantics/openAccess2023-03-01T20:06:48Zoai:repositorio.unesp.br:11449/240213Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:57:07.862096Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Experimental burns in an open savanna: Greater fuel loads result in hotter fires |
title |
Experimental burns in an open savanna: Greater fuel loads result in hotter fires |
spellingShingle |
Experimental burns in an open savanna: Greater fuel loads result in hotter fires Silva, Marina Oliveira de Cerrado fire behavior fire duration fire intervals fire temperatures Neotropical savanna |
title_short |
Experimental burns in an open savanna: Greater fuel loads result in hotter fires |
title_full |
Experimental burns in an open savanna: Greater fuel loads result in hotter fires |
title_fullStr |
Experimental burns in an open savanna: Greater fuel loads result in hotter fires |
title_full_unstemmed |
Experimental burns in an open savanna: Greater fuel loads result in hotter fires |
title_sort |
Experimental burns in an open savanna: Greater fuel loads result in hotter fires |
author |
Silva, Marina Oliveira de |
author_facet |
Silva, Marina Oliveira de Borges, Marcelo Sant'Ana Fernandes, Luana Gomes [UNESP] Rodrigues, Naiara Nantes [UNESP] Watanabe, Yeda Fumie Joaquim, Daniel Carlino Oliveira, Clara Slade Feuchard, Viviane Luzia Silva da Cyrillo, Joslaine Noely Santos Gonçalves dos Mercadante, Maria Eugênia Zerlotti Monteiro, Fabio Morato [UNESP] |
author_role |
author |
author2 |
Borges, Marcelo Sant'Ana Fernandes, Luana Gomes [UNESP] Rodrigues, Naiara Nantes [UNESP] Watanabe, Yeda Fumie Joaquim, Daniel Carlino Oliveira, Clara Slade Feuchard, Viviane Luzia Silva da Cyrillo, Joslaine Noely Santos Gonçalves dos Mercadante, Maria Eugênia Zerlotti Monteiro, Fabio Morato [UNESP] |
author2_role |
author author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Instituto Tecnológico Vale (ITV) |
dc.contributor.author.fl_str_mv |
Silva, Marina Oliveira de Borges, Marcelo Sant'Ana Fernandes, Luana Gomes [UNESP] Rodrigues, Naiara Nantes [UNESP] Watanabe, Yeda Fumie Joaquim, Daniel Carlino Oliveira, Clara Slade Feuchard, Viviane Luzia Silva da Cyrillo, Joslaine Noely Santos Gonçalves dos Mercadante, Maria Eugênia Zerlotti Monteiro, Fabio Morato [UNESP] |
dc.subject.por.fl_str_mv |
Cerrado fire behavior fire duration fire intervals fire temperatures Neotropical savanna |
topic |
Cerrado fire behavior fire duration fire intervals fire temperatures Neotropical savanna |
description |
Fire is a main disturbance structuring vegetation worldwide, but few studies have addressed differences in time since last fire and its relationship to fuel load characteristics and fire behavior in Neotropical savannas. We aimed to investigate fire behavior in a Cerrado open savanna of Central Brazil by conducting prescribed fires in areas with different fire-free intervals: one year (FI-1), two years (FI-2), and four years (FI-4). Specifically, we evaluated (1) the amount of live, dead, and total biomass (components of the fuel load); (2) fire behavior, including fire temperatures in three different heights (1 cm belowground, on the soil surface, and 50 cm aboveground), fire duration, residence time, fire intensity, rate of spread, and flame height; and (3) the relationship between soil heating, fuels, and fire by identifying the most important parameters driving soil heating. Total and dead fuel loads were greater in areas with longer fire-free intervals in comparison with areas burned the previous year, with the greatest increment to the fuel bed occurring in the first two years after fire. Greater fuel loads (consequently greater dead fuel loads) resulted in differences in belowground soil heating (-1 cm), where temperatures varied from 39 to 82°C in FI-2 plots and from 40 to 131°C in FI-4 plots; in FI-1 plots temperatures belowground varied from 29 to 68°C. Temperatures on the soil surface and 50 cm aboveground were also greater in plots with longer fire-free intervals, reaching over 400°C on the soil surface and exceeding 500°C 50 cm aboveground. Finally, amount of dead fuel was the best predictor of belowground soil heating, highlighting the importance of fuel loads, which is a key factor to be monitored in fire management plans of Cerrado open savannas. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-08-01 2023-03-01T20:06:47Z 2023-03-01T20:06:47Z |
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/10.1111/aec.13202 Austral Ecology, v. 47, n. 5, p. 1101-1112, 2022. 1442-9993 1442-9985 http://hdl.handle.net/11449/240213 10.1111/aec.13202 2-s2.0-85131638231 |
url |
http://dx.doi.org/10.1111/aec.13202 http://hdl.handle.net/11449/240213 |
identifier_str_mv |
Austral Ecology, v. 47, n. 5, p. 1101-1112, 2022. 1442-9993 1442-9985 10.1111/aec.13202 2-s2.0-85131638231 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Austral Ecology |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1101-1112 |
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 |
|
_version_ |
1808129266408226816 |