Banca de DEFESA: LORIENE GOMES DA ROCHA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : LORIENE GOMES DA ROCHA
DATA : 23/08/2022
HORA: 15:00
LOCAL: Sala de aula do PPG-BioAgro
TÍTULO:

Effects of fire on forest and savannah in southern Amazonia

PALAVRAS-CHAVES:

Forest fire, cerradão, resilient, resistant, drought, inventory

PÁGINAS: 60
GRANDE ÁREA: Ciências Biológicas
ÁREA: Ecologia
SUBÁREA: Ecologia de Ecossistemas
RESUMO:

ROCHA. Loriene Gomes. M.Sc. Universidade do Estado de Mato Grosso, may 2022. Effects of fire on forest and savannah in southern Amazonia. Adviser: Ben Hur Marimon Junior. Co-adviser: Marco Antonio Camillo de Carvalho. Co-adviser: Célia Regina Araújo Soares Lopes

Droughts and temperature extremes are becoming increasingly frequent and intense in the Amazon, ideal conditions for the occurrence of forest fires. This work aimed to evaluate the impacts caused by fire on the tree component. The study was carried out in two areas of forest (cerradão and open ombrophilous forest), and one of savanna (typical cerrado) in Southern Amazon. Between the years inventoried, there were two forest fires that reached the study areas, probably of anthropic origin. The vegetation that suffered the greatest impacts of the fire was the open ombrophilous forest, with a percentage of deaths of 29.7%, followed by the cerradão (27.99%) and typical cerrado (9.12%). Even in the face of the various reasons that caused the mortality of 736 individuals of the 3,636 between the years inventoried, 511 (69,4%) of these showed evidence of death caused by fire, considering the three areas. Even in the Cerrado, vegetation more adapted to fire, we registered a negative balance of species and individuals because of the fires. Our results show that there were significant reductions in species diversity and considerable structural damages in the cerradão and ombrophilous forest phytophysiognomies. Such alterations can, in the long- and medium-term, with the recurrence of fires, affect permanently the functionality of these ecosystems causing irreversible damages that could lead to a permanent tipping point of the vegetation, especially in the ombrophilous forest and cerradão. Therefore, it is important to continue with forest inventories to monitor the conservation status of phytophysiognomies in the event of a possible recurrence or absence of the fires.

MEMBROS DA BANCA:
Presidente - 82329001 - BEN HUR MARIMON JUNIOR
Interno - 253812001 - PEDRO VASCONCELLOS EISENLOHR
Externo à Instituição - IMMACULADA OLIVERAS MENOR - Oxford