Publication
Climate and vegetation dynamics and its impact on present and future fire regimes in Brazil
| datacite.subject.fos | Ciências Naturais::Ciências da Terra e do Ambiente | pt_PT |
| dc.contributor.advisor | Câmara, Carlos Portugal da | |
| dc.contributor.advisor | Libonati, Renata | |
| dc.contributor.author | Silva, Patrícia S. | |
| dc.date.accessioned | 2025-02-07T18:33:46Z | |
| dc.date.available | 2025-02-07T18:33:46Z | |
| dc.date.issued | 2024-12-17 | |
| dc.date.submitted | 2024-10-21 | |
| dc.description.abstract | This thesis investigates regional fire patterns and their climatic and anthropogenic controls in the Brazilian savannas. The focus of this thesis is the Cerrado biome, and the main analysis consists in three stages: (i) including the fire component to the ecoregional map of the Cerrado through a classification that includes several fire parameters; (ii) analysing the climatic controls on regional burned areas; (iii) exploring the anthropogenic influence on regional fire dynamics. The first stage (i) explores the regional variability in fire behaviours in Cerrado, employing several satellite-derived datasets and fire attributes, such as extent, intensity, number, and size. This analysis reveals significant spatial heterogeneity in fire behaviour over the last two decades, namely in fire size. Then, the second stage (ii) explores if this geographical variability in fire behaviour is associated with distinct regional fire-climate dynamics using temperature and precipitation fields. Results show that extreme fire seasons are associated with both pre-conditioned and concurrent climate: early fire season burned areas are more influenced by pre-conditioned climate, whereas late-season fires depend heavily on concurrent weather patterns. Finally, stage (iii) further adds the anthropogenic component and tests the performance of fire-climate models in light of human land use, deforestation, and population patterns. A novel approach based on individual fire events is proposed and different fire-climate-human dynamics are found for smaller and larger fires. The findings of this thesis emphasize the regional variability in fire-climate-human relationships and suggest that a one-size-fits-all approach to fire management in the Cerrado may be insufficient. Moreover, due to the catastrophic 2020 Pantanal fire events, this thesis also explores fire and climate patterns in the region and the relationship between fire and heatwaves. Given the limited research on fire in the Pantanal wetlands, both these studies prove important contributions to fire science in the biome. | pt_PT |
| dc.identifier.tid | 101670176 | pt_PT |
| dc.identifier.uri | http://hdl.handle.net/10400.5/98238 | |
| dc.language.iso | eng | pt_PT |
| dc.relation | Climate and vegetation dynamics and its impact on present and future fire regimes in Brazil | |
| dc.subject | fire-climate | pt_PT |
| dc.subject | statistical analysis | pt_PT |
| dc.subject | Cerrado | pt_PT |
| dc.subject | Pantanal | pt_PT |
| dc.subject | Brazil | pt_PT |
| dc.subject | fogo-clima | pt_PT |
| dc.subject | análise estatística | pt_PT |
| dc.title | Climate and vegetation dynamics and its impact on present and future fire regimes in Brazil | pt_PT |
| dc.type | doctoral thesis | |
| dspace.entity.type | Publication | |
| oaire.awardTitle | Climate and vegetation dynamics and its impact on present and future fire regimes in Brazil | |
| oaire.awardURI | info:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F146646%2F2019/PT | |
| person.familyName | Silva | |
| person.givenName | Patrícia S. | |
| person.identifier | 1533982 | |
| person.identifier.ciencia-id | A61E-4FEB-CD41 | |
| person.identifier.orcid | 0000-0003-0410-2971 | |
| person.identifier.rid | AAP-1046-2020 | |
| person.identifier.scopus-author-id | 57199965833 | |
| project.funder.identifier | http://doi.org/10.13039/501100001871 | |
| project.funder.name | Fundação para a Ciência e a Tecnologia | |
| rcaap.rights | openAccess | pt_PT |
| rcaap.type | doctoralThesis | pt_PT |
| relation.isAuthorOfPublication | 25c123b0-6f74-42f5-96fa-b8c5f686012d | |
| relation.isAuthorOfPublication.latestForDiscovery | 25c123b0-6f74-42f5-96fa-b8c5f686012d | |
| relation.isProjectOfPublication | 537d08a7-88cc-4fa7-af78-b188bd34b483 | |
| relation.isProjectOfPublication.latestForDiscovery | 537d08a7-88cc-4fa7-af78-b188bd34b483 | |
| thesis.degree.name | Tese de doutoramento, Ciências Geofísicas e da Geoinformação (Meteorologia), Universidade de Lisboa, Faculdade de Ciências, 2024 | pt_PT |