Vegetation patterns and the influence of rainfall after long-term fire suppression on a woody community of a Brazilian savanna
Abstract We evaluated the structural and floristic characteristics of a Brazilian savanna fragment occupied by cerradão (CD) and cerrado sensu stricto (CS) in response to the influence of rainfall and long-term fire suppression. We carried out floristic, phytosociological and remote sensing studies...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Academia Brasileira de Ciências
|
| Series: | Anais da Academia Brasileira de Ciências |
| Subjects: | |
| Online Access: | http://www.scielo.br/pdf/aabc/v93n1/0001-3765-aabc-93-01-e20191405.pdf |
| _version_ | 1819004660757823488 |
|---|---|
| author | MARCELO H.O. PINHEIRO THIAGO S. AZEVEDO FERNANDA L. FERREIRA REINALDO MONTEIRO |
| author_facet | MARCELO H.O. PINHEIRO THIAGO S. AZEVEDO FERNANDA L. FERREIRA REINALDO MONTEIRO |
| author_sort | MARCELO H.O. PINHEIRO |
| collection | DOAJ |
| description | Abstract We evaluated the structural and floristic characteristics of a Brazilian savanna fragment occupied by cerradão (CD) and cerrado sensu stricto (CS) in response to the influence of rainfall and long-term fire suppression. We carried out floristic, phytosociological and remote sensing studies in a cerrado fragment located in Corumbataí (SP, Brazil) after 43 years of complete fire suppression. We surveyed 43 plots of 200 m2 each (17 plots in CS and 26 plots in CD) and all individuals ≥ 0.32 cm diameter measured at 30 cm from the ground were included in the sample. We calculated phytosociological parameters for each species and classified them in three ecological groups, namely savanna, generalist and forest species. The remote sensing analysis used aerial photographs and satellite images from 1962 to 2019 (i.e. 59 years). The structural study of community revealed high predominance of forest and generalist species when compared to savanna species. Non-linear correlation between CD expansion rates and total rainfall within the study period indicated a positive influence of the rainfall (R2 = 0.42). Thus, our analysis indicated a tendency of a continuous and fast expansion of CD over areas of CS in the long-term absence of fire combined with periods of heavy rain. |
| first_indexed | 2024-12-20T23:40:26Z |
| format | Article |
| id | doaj.art-7a67f23dd220418db6aa65fe5806f745 |
| institution | Directory Open Access Journal |
| issn | 1678-2690 |
| language | English |
| last_indexed | 2024-12-20T23:40:26Z |
| publisher | Academia Brasileira de Ciências |
| record_format | Article |
| series | Anais da Academia Brasileira de Ciências |
| spelling | doaj.art-7a67f23dd220418db6aa65fe5806f7452022-12-21T19:23:07ZengAcademia Brasileira de CiênciasAnais da Academia Brasileira de Ciências1678-269010.1590/0001-3765202120191405Vegetation patterns and the influence of rainfall after long-term fire suppression on a woody community of a Brazilian savannaMARCELO H.O. PINHEIROTHIAGO S. AZEVEDOFERNANDA L. FERREIRAREINALDO MONTEIROAbstract We evaluated the structural and floristic characteristics of a Brazilian savanna fragment occupied by cerradão (CD) and cerrado sensu stricto (CS) in response to the influence of rainfall and long-term fire suppression. We carried out floristic, phytosociological and remote sensing studies in a cerrado fragment located in Corumbataí (SP, Brazil) after 43 years of complete fire suppression. We surveyed 43 plots of 200 m2 each (17 plots in CS and 26 plots in CD) and all individuals ≥ 0.32 cm diameter measured at 30 cm from the ground were included in the sample. We calculated phytosociological parameters for each species and classified them in three ecological groups, namely savanna, generalist and forest species. The remote sensing analysis used aerial photographs and satellite images from 1962 to 2019 (i.e. 59 years). The structural study of community revealed high predominance of forest and generalist species when compared to savanna species. Non-linear correlation between CD expansion rates and total rainfall within the study period indicated a positive influence of the rainfall (R2 = 0.42). Thus, our analysis indicated a tendency of a continuous and fast expansion of CD over areas of CS in the long-term absence of fire combined with periods of heavy rain.http://www.scielo.br/pdf/aabc/v93n1/0001-3765-aabc-93-01-e20191405.pdfCompetitionecological successionlocal extinctionsmicroclimateremote sensing |
| spellingShingle | MARCELO H.O. PINHEIRO THIAGO S. AZEVEDO FERNANDA L. FERREIRA REINALDO MONTEIRO Vegetation patterns and the influence of rainfall after long-term fire suppression on a woody community of a Brazilian savanna Anais da Academia Brasileira de Ciências Competition ecological succession local extinctions microclimate remote sensing |
| title | Vegetation patterns and the influence of rainfall after long-term fire suppression on a woody community of a Brazilian savanna |
| title_full | Vegetation patterns and the influence of rainfall after long-term fire suppression on a woody community of a Brazilian savanna |
| title_fullStr | Vegetation patterns and the influence of rainfall after long-term fire suppression on a woody community of a Brazilian savanna |
| title_full_unstemmed | Vegetation patterns and the influence of rainfall after long-term fire suppression on a woody community of a Brazilian savanna |
| title_short | Vegetation patterns and the influence of rainfall after long-term fire suppression on a woody community of a Brazilian savanna |
| title_sort | vegetation patterns and the influence of rainfall after long term fire suppression on a woody community of a brazilian savanna |
| topic | Competition ecological succession local extinctions microclimate remote sensing |
| url | http://www.scielo.br/pdf/aabc/v93n1/0001-3765-aabc-93-01-e20191405.pdf |
| work_keys_str_mv | AT marcelohopinheiro vegetationpatternsandtheinfluenceofrainfallafterlongtermfiresuppressiononawoodycommunityofabraziliansavanna AT thiagosazevedo vegetationpatternsandtheinfluenceofrainfallafterlongtermfiresuppressiononawoodycommunityofabraziliansavanna AT fernandalferreira vegetationpatternsandtheinfluenceofrainfallafterlongtermfiresuppressiononawoodycommunityofabraziliansavanna AT reinaldomonteiro vegetationpatternsandtheinfluenceofrainfallafterlongtermfiresuppressiononawoodycommunityofabraziliansavanna |