Banca de DEFESA: BRUNO ARAÚJO DE SOUZA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : BRUNO ARAÚJO DE SOUZA
DATA : 26/03/2021
HORA: 15:00
LOCAL: Remoto
TÍTULO:

Population ecology of Ameiva ameiva (Squamata, Teiidae) in the Cerrado-Amazonia transition

PALAVRAS-CHAVES:

Cerrado; Conservation; Demography; Lizard; Mark-re

PÁGINAS: 71
GRANDE ÁREA: Ciências Biológicas
ÁREA: Ecologia
SUBÁREA: Ecologia Aplicada
RESUMO:

The age structure of natural populations is in constant fluctuation due to the influence of genetic, ecological, or environmental factors upon births, deaths, and migratory movements. We investigated the population ecology of Ameiva ameiva to assess the effects of microclimatic variables (temperature and humidity) on the population age structure. We monitored lizards for two years (August 2015 to August 2017) with 25 pitfall-traps along a vegetation gradient in Nova Xavantina, Mato Grosso, Brazil. We use automatic data loggers in all traps to obtain microclimatic parameters. The first two PCA axes explained 86% of the variation in the microclimate variables, describing an environmental gradient of temperature decrease and humidity increase in the cerrado sensu stricto to cerradão. We found a higher frequency of captures in the cerrado sensu stricto than in the cerradão and in months with low precipitation. A. ameiva showed seasonal reproduction with a low overlap of generations and recruitment in April and an annual life cycle. The spatio-temporal variation in the captures of A. ameiva is primarily influenced by absolute maximum temperature and maximum daily relative humidity. This may be related to the species’ morphological and physiological characteristics, which allows for a wide variety of habitats and enhanced thermoregulation and foraging opportunities.

MEMBROS DA BANCA:
Interno - 005.506.021-86 - FABRÍCIUS MAIA CHAVES BICALHO DOMINGOS - NENHUMA
Interno - 506.486.166-49 - GUARINO RINALDI COLLI - UnB
Externo à Instituição - HELGA CORREA WIEDERHECKER - UCB
Externo à Instituição - MARCIO ROBERTO COSTA MARTINS - USP
Externo à Instituição - TIANA KOHLSDORF - USP