Banca de DEFESA: JULIO CEZAR CALDERON DE ALMEIDA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : JULIO CEZAR CALDERON DE ALMEIDA
DATA : 29/06/2018
HORA: 09:00
LOCAL: Museu de Ciências Morfológicas - CB
TÍTULO:

ENVIRONMENTAL FACTORS THAT INFLUENCE ON THE OCCUPATION OF SUB-FOREST BIRDS OF THE SERIDÓ CAATINGA - A CASE STUDY IN THE RPPN STOESSEL DE BRITTO.

PALAVRAS-CHAVES:

Birds, Seridó, Caatinga, Occupation.

PÁGINAS: 60
GRANDE ÁREA: Ciências Biológicas
ÁREA: Zoologia
SUBÁREA: Zoologia Aplicada
ESPECIALIDADE: Conservação das Espécies Animais
RESUMO:

Birds are one of the zoological groups that most suffer from the decharacterization and fragmentation of habitats caused by anthropic action. The Brazilian avifauna is composed of approximately 1,919 species, with 510 species of birds that inhabit the caatinga. The birds deserve special attention because of their taxonomic diversity, characteristic of bioindicators and great capacity to move to choose their habitat, being that the evaluation of their community is an important tool to verify the degree of conservation and quality of the habitats. In view of this, we carried out an ornithological survey of the area with the purpose of enabling the characterization of the predominant birds in the environment. In this sense, the present study aims to investigate how environmental aspects and intra- and interspecific relationships affect the distribution of groups of birds in the sub-forest of the Seridó caatinga and estimate their occupation in their habitat. In this way we collected point-of-listening data in 40 sampling units during the period of lower rainfall. The study was done in the Private Natural Heritage Reserve (RPPN) Fazenda Salobro known as Stoessel de Britto, located between the district of Laginhas belonging to the municipality of Caicó and the municipality of Jucurutu, both found in the state of Rio Grande do Norte. The RPPN Stoessel de Brito contains a set of specimens of birds adapted to the caatinga biome, this group of vertebrates was classified according to the manual of the birds of the world HBW Alive by the food habit, being considered the following trophic guilds: carnivorous, frugivorous, granivore, granivore of soil, insectivorous, insectivorous soil, insectivorous trunk, nectarivore and omnivore. We used the MARK program (version 8.x.) to generate static occupation models, which incorporate two stochastic processes. As parameters we have the probability of occupancy (Psi) that is defined as the proportion of habitat occupied by a species and the probability of detection (p) that is the probability of the target species being detected in a given area. We used occupation models for a species and a station (Single-species, single-season occupancy models). In this way we obtained a set of models formed from the initial hypothesis where the environmental covariates influenced the detection (p) and occupation (Psi) of the groups of birds (guilds). In view of the analysis indicated by the MARK program we had a very heterogeneous distribution of birds. It is observed that the trophic guilds of carnivores, frugivores, granivores, soil and insectivorous granivores, with the highest number of occupation points, standing out the granivores and insectivorous generalists with 92.5%, and soil granivores occupying 97, 5% of the sampling points, while the insectivorous trophic guilds of soil and insectivorous trunk presented 22.5% of their occupation, with their occupation influenced by environmental covariates.

MEMBROS DA BANCA:
Presidente - 1439088 - MAURO PICHORIM
Interno - 1753234 - GUSTAVO ZAMPIER DOS SANTOS LIMA
Externo à Instituição - GUILHERME SANTOS TOLEDO DE LIMA - UFRPE