Banca de DEFESA: LUÍS GUSTAVO CARVALHO DE SOUZA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : LUÍS GUSTAVO CARVALHO DE SOUZA
DATA : 06/06/2025
HORA: 09:00
LOCAL: Universidade do Estado de Mato Grosso - Nova Xavantina
TÍTULO:

Effects of fire on the provision of ecosystem services for the Kuikuro People of Xingu

PALAVRAS-CHAVES:

climate crisis, forest fires, traditional use of tree species, Indigenous people

PÁGINAS: 62
GRANDE ÁREA: Ciências Biológicas
ÁREA: Ecologia
RESUMO:

The Xingu Indigenous Territory (TIX), located in the southern Amazon, harbors vast
biodiversity and plays a crucial role in carbon sequestration, in addition to being home to
numerous Indigenous ethnic groups. However, this territory faces growing threats from climate
crises and agricultural expansion, which increase the frequency of forest fires and forest
degradation. This study was conducted in the Afukuri village, located within the TIX, with the
objective of assessing the impacts of fire on tree species and their various uses by the Kuikuro
people.To achieve this, we carried out an inventory of tree vegetation, including individuals
with a minimum diameter of 10 cm, across 32 plots measuring 10 × 10 meters (20 located in
forest areas and 12 in savanna areas, or cerrado). For each individual, we recorded diameter,
height, and the types of use identified by the Indigenous people (food, construction/craftwork,
and/or medicinal use). In addition, using remote sensing products, we assessed fire frequency
in each plot, as well as environmental variables such as elevation, slope, and soil characteristics
(pH, clay content, and density).The results indicated a total of 92 species sampled, with 38 in
the cerrado and 54 in the forest. In the forest, 6.3% of the species were classified as useful for
food, 9.1% as medicinal, and 17.3% for construction or craftwork. In the cerrado, these
proportions were 5.4%, 11.8%, and 3.6%, respectively. The floristic composition varied
significantly between the two environments, being more influenced by clay content and fire
frequency in the cerrado, whereas in the forest, soil density and slope were the most relevant
factors.We observed that individual density was higher in the forest (1,355 ind/ha) compared
to the cerrado (1,041.67 ind/ha), and basal area was also more substantial in the forest
environment. Regression analyses indicated that the proportion of useful species for food,
construction/craftwork, and medicinal purposes tends to decrease with increased fire frequency,
directly affecting the food security and livelihoods of the Kuikuro community.These results are
essential to support management and conservation strategies for traditionally used species,
contributing to the socio-environmental resilience of Indigenous communities in the Xingu and
to the preservation of essential ecosystem services provided by the Cerrado and the Amazon.

MEMBROS DA BANCA:
Interno - 996.005.011-49 - DIVINO VICENTE SILVÉRIO - UnB
Externo à Instituição - 015.885.221-48 - LEONARDO MARACAHIPES DOS SANTOS - IPAM
Externo à Instituição - LUIZ CLÁUDIO MOREIRA MELO JÚNIOR - UFRA