Banca de QUALIFICAÇÃO: ANTONIO MIGUEL OLIVO NETO

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
DISCENTE : ANTONIO MIGUEL OLIVO NETO
DATA : 19/12/2022
HORA: 14:00
LOCAL: Atividade Remota
TÍTULO:

Macro and Micro Scale of Vegetation Changes Caused by Fire and Deforestation in the Amazon-Cerrado-Pantanal Ecotone, Mato Grosso, Brazil

PALAVRAS-CHAVES:

Desfloramento; Dinâmica; Queimadas; Zona de Transição

 

PÁGINAS: 121
GRANDE ÁREA: Ciências Biológicas
ÁREA: Ecologia
SUBÁREA: Ecologia de Ecossistemas
RESUMO:

Fires and deforestation have the ability to shape the landscape of a region, directly transforming areas of native vegetation. This thesis aimed to evaluate, on a macro and micro scale, the effects of forest fires and deforestation in the ecotone of the Amazon-Cerrado-Pantanal biomes, which occurred in the southwest region of the state of Mato Grosso. The macro-scale assessments, which aimed to analyze the entire Ecotone region, based on secondary data and analysis of satellite images, using geoprocessing techniques. The analyzes at a local scale (micro scale) were based on data obtained in the field, in permanent vegetation monitoring plots installed/allocated in the ecotone of study focus. So far, the results obtained in this study have indicated that deforestation occurs mostly in the Amazon biome, while fire focus occur with greater density in the Pantanal in regions close to the Cerrado. Both deforestation and fire focus occur connected between the three biomes and they respond to government actions, mitigating or aggravating occurrences due to public policies. After this history of fires, deforestation and other impacts, the areas of remaining native vegetation in the region are approximately 60% of the evaluated territory, but this remnant is fragmented, indicating that the Pantanal area located in the studied ecotone has great influence in the conservation of native vegetation and it is necessary to look specifically at the vegetation of this biome, and it is possible to verify that the areas located in forest typology present a deficit of vegetation, compared to the current legislation. The presence of Indigenous Lands, Conservation Units and Public Forests, help to maintain the remnants of native vegetation in the region, while areas with a high concentration of rural properties have a smaller amount of native vegetation, with emphasis on areas with a predominance of small rural properties, which have more fragmented vegetation areas. In addition, the results obtained here indicate that it is necessary to prioritize the analyzes and validations of the Rural Environmental Registers, as they are important tools for environmental regularization and help in the preservation of areas of native vegetation, existing within the referred properties, which is the predominant class in the soil occupation of the region studied. In the evaluations carried out in the field, it was possible to verify that forest areas located in the ecotone with a history of anthropization for logging, when affected by fires, have a high mortality rate of tree vegetation and the fragments that remain in the region are highly impacted, having their vegetation altered by high mortality. It was also possible to verify that the use of unmanned aerial vehicles (drones) are important auxiliary tools for forest inventories to estimate mortality and evaluate the dynamics of post-fire vegetation in these forest areas. The two chapters that are being elaborated in this study will bring results about the methodology for surveying forest inventory data and will evaluate the direct effects on vegetation of forest fires in areas located in the Amazon-Cerrado-Pantanal ecotone, assessing the resilience of tree vegetation and their effects on the soil of these areas, as well as predictive results on the respective conservation scenarios.

MEMBROS DA BANCA:
Presidente - 83215001 - MARIA ANTONIA CARNIELLO
Interno - 80970002 - DIONEI JOSE DA SILVA
Interno - 110049004 - MARIA APARECIDA PEREIRA PIERANGELI
Interno - 58842001 - SANDRA MARA ALVES DA SILVA NEVES
Externo ao Programa - 704.952.111-68 - MARINA CORRÊA SCALON - NENHUMA
Externo ao Programa -
Externo à Instituição - REGINALDO ANTONIO MEDEIROS - IFMT