Banca de DEFESA: SÉRGIO GOMES DA SILVA

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
DISCENTE : SÉRGIO GOMES DA SILVA
DATA : 03/03/2023
HORA: 14:00
LOCAL: Defesa via Videoconferência
TÍTULO:

Changes in the community structure of bats and their ectoparasitic flies in anthropized landscapes in the Amazon-Ecotone-Cerrado

PALAVRAS-CHAVES:

Beta diversity, Fragmentation, Predation, Transition.

PÁGINAS: 40
GRANDE ÁREA: Ciências Biológicas
ÁREA: Biologia Geral
RESUMO:

Anthropogenic changes by land use actions in the Amazon and Cerrado in Mato Grosso have intensified over the last few decades, including the broad ecotonal zone between these biomes. Among the animals in these landscapes are bats, which provide broad positive ecosystem services but are harmed by environmental impacts. We sought to assess across a broad geographic scale across the Amazon, Cerrado, and ecotone between these biomes, changes in bat community richness, abundance, and composition in the face of habitat loss and fragmentation processes, as well as the effects of bat associations and their flies, as well as a report of predation on an abundant bat species by a tropical owl. The methodology consisted of capturing bats and their ectoparasitic flies in 24 forest remnants at the edge and interior of forests in the states of Rondônia and Mato Grosso, between the years 2018 to 2020. The extraction of landscape metrics was performed using QGIS and with R software we analyzed the structure of communities of bats and their ectoparasitic flies through analyzes that included NMDS, CCA, ANOVA, Beta diversity, GLMm and a GDM model. We also report the attempted predation of an abundant fruit bat by a tropical owl. The results indicate that the bat community structure is different between the Amazon and the Cerrado and the sampled transition zone is more similar to the species composition found in the Amazon. Separating the bat community between the edge and the interior of the forest, the composition of the interior bat community is more influenced by forest cohesion, while the community composition at the edge of the forests is related to the biomes where the remnants are inserted. The evaluations of ectoparasitic flies reveal high diversity, and that their composition is more influenced by the composition of the host bat community, without influence of the biome and with little influence of the landscape on the structure of the fly communities. During data collection, the attempt of opportunistic predation by an owl species on a fruit bat species was recorded, which complement the natural history of these species. Researches evaluating fragmentation responses with expansion of the sampling scale are essential for broader discussions on conservation strategies for neotropical ecosystems.

MEMBROS DA BANCA:
Externo à Instituição - CHRISTINE STEINER SÃO BERNARDO - UNESP
Externo à Instituição - ERICH ARNOLD FISCHER - UFMS
Externo à Instituição - GUSTAVO GRACIOLLI - UFMS
Presidente - 704.948.001-00 - GUSTAVO RODRIGUES CANALE - UFMT
Interno - 66972005 - JOSUE RIBEIRO DA SILVA NUNES
Interno - 48690002 - SOLANGE KIMIE IKEDA CASTRILLON