Banca de QUALIFICAÇÃO: JOSE ONOFRE NASCIMENTO MONTEIRO

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : JOSE ONOFRE NASCIMENTO MONTEIRO
DATE: 31/08/2023
TIME: 14:00
LOCAL: Google Meet
TITLE:

Padrões De Ocupação E Uso De Habitats Costeiros Neotropicais Por Aves Limícolas Migratórias

KEY WORDS:

Shorebirds; occupancy; semi-arid coastline; conservation.

PAGES: 25
BIG AREA: Ciências Biológicas
AREA: Ecologia
SUMMARY:

Many shorebird species are associated with coastal ecosystems during their annual migratory movements between breeding and overwintering areas. The semi-arid coastal region of northeastern Brazil presents a vast landscape of suitable habitats for these birds. Investigating the use of these habitats by shorebirds as a function of landscape structure and anthropic disturbances is a useful approach to better understand their occupancy patterns in the semi-arid region. In 2022 we conducted n=3 independent data sampling campaigns, representing n=111 individual 1km long transects, totaling 803 km, covering the entire coastline of Ceará and part of Rio Grande do Norte. Presence/absence data for the species (Calidris canutus, Calidris pusilla, Limnodromus griseus and Numenius hudsonicus) were collected by means of visual observation using binoculars and spotting scopes. Specific habitat characteristics and other variables, such as proximity to particular habitats, human occupations, and degree of disturbances related to tourism activities were also recorded during each transect. The influence of these environmental and human impact variables on spatial occupation patterns of Red Knot was assessed using Program MARK. Our analysis indicates that Red Knot presents an occupancy rate of Ѱ = 0.071, which was positively influenced by proximity to estuary habitat and availability of sandy beach habitats. There was also a positive relationship with the presence of domestic animals, indicating that Red Knots also confront some degree of direct disturbance in these habitats during the overwintering period. These results will help to inform conservation strategies and better define the ecological requirements of this threatened species during the greater part of its non-breeding periods.

COMMITTEE MEMBERS:
Interno - 1545394 - FULVIO AURELIO DE MORAIS FREIRE
Presidente - 1439088 - MAURO PICHORIM
Externo à Instituição - RANDSON MODESTO COÊLHO DA PAIXÃO