Banca de QUALIFICAÇÃO: THANYRIA POLLYNEIDE FRANÇA CÂMARA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : THANYRIA POLLYNEIDE FRANÇA CÂMARA
DATA : 09/12/2016
HORA: 14:00
LOCAL: Auditório do Museu de Ciências Morfológicas
TÍTULO:

DEMOGRAFIA DE Tangara cayana (AVES:

THRAUPIDAE) EM UM FRAGMENTO DE RESTINGA NO EXTREMO

NORTE DE DISTRIBUIÇÃO DA MATA ATLÂNTICA.

PALAVRAS-CHAVES:

Taxas de sobrevivência, Aves tropicais, Traupidae, Desenho Robusto, MARK

PÁGINAS: 33
GRANDE ÁREA: Ciências Biológicas
ÁREA: Ecologia
RESUMO:

For many decades, ornithologists have sought to understand how species differentiate their

life history traits, both between populations and between species, through an environmental

gradient, thus leading to demographic studies around the world. However, there are still

gaps in information about life history traits for species in tropical regions, as well as

variables that influence them. Efficient conservation and management programs depend on

this type of information. We measured demographic parameters of a tropical Thraupide,

Tangara cayana, in the northern end of the Atlantic Forest distribution. We estimated

apparent survival, detection, dispersion and population size, also testing how transient

individuals, rainfall, and sex of individuals influenced population survival rates. We insert

historical capture-mark- recapture in the MARK program, following the method of Robust

Design. Between November 2010 and November 2014 we marked 127 individuals of T.

cayana, from which we could observe a lower annual survival of transients (2% to 4%),

followed by young (12% to 34%) and adults (males = 29% to 54%, females = 30% to

55%). The dispersion parameters (y’= 71%, y” = 73%) and detection (capture = 26%,

recapture = 5%) were constant, with no temporal variation. The population density was 1.7

individuals / ha. We find a negative relationship between rainfall and survival. The

demographic parameters estimated showed low values for a tropical bird, which may be

linked to the great capacity of dispersion of the species, leading us to the perspective that

these demographic patterns are still unclear, requiring further studies on habitats in these

regions.

MEMBROS DA BANCA:
Externo ao Programa - 1879211 - BRUNO CAVALCANTE BELLINI
Externo ao Programa - 1718346 - EDUARDO MARTINS VENTICINQUE
Presidente - 1439088 - MAURO PICHORIM