Fire passage on geomorphic fractures in Cerrado: effect on vegetation
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...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Embrapa Florestas
2016-12-01
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| Series: | Pesquisa Florestal Brasileira |
| Subjects: | |
| Online Access: | https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/885 |
| Summary: | 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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| ISSN: | 1809-3647 1983-2605 |