Banca de DEFESA: LUCAS AUGUSTO DOS SANTOS SILVA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : LUCAS AUGUSTO DOS SANTOS SILVA
DATE: 12/05/2023
TIME: 09:00
LOCAL: sala virtual - Link da videochamada: https://meet.google.com/hut-bggn-cqf
TITLE:

INFLUENCE OF FOREST STRUCTURE AND NEST LOCATION ON THE RISKS OF EGG PREDATION IN THE ATLANTIC TROPICAL FOREST

KEY WORDS:

Vegetation structure, specific-predator hypothesis, total-foliage hypothesis, aqua-phobic nest predator hypothesis, nest predation

PAGES: 50
BIG AREA: Ciências Biológicas
AREA: Zoologia
SUBÁREA: Zoologia Aplicada
SUMMARY:

Predation risk is a dynamic spatio-temporal process in which each habitat may represent a greater or lesser risk to the prey. This risk influences the prey's decision-making to reduce its vulnerability, and anti-predation strategies include the best choice of space use. Furthermore, effects on nesting sites are differentiated due to regional patterns of habitat cover. However, little is known about activity patterns and nest-seeking strategies of predators. Furthermore, to understand these possible predation patterns some hypotheses need to be tested. Thus, this work aimed to investigate the influence of vegetation structure, nest location and predator type on predation risks of understory birds nests in the Atlantic Forest, using natural nests with artificial eggs distributed at different heights. and distances from water and, measuring variables of habitat structure, litter, canopy and vegetation density. Our results showed that mammals were the main predators of the nests, mainly those distant between 25 and 50m from the water and built on the ground or at an intermediate height. While the birds preferred higher nests without any relation to the water. We confirmed the positive relationship between sites without predation and higher vegetation density. However, although the nests near the water suffered fewer predation events, the streams chosen for the experiment did not seem to act as a barrier, since they are narrow and shallow

BANKING MEMBERS:
Presidente - 1756620 - MARCIO AMORIM EFE
Interno(a) - 2269625 - ROBSON GUIMARAES DOS SANTOS
Externo(a) à Instituição - SANDRA MARIA HARTZ
Externo(a) à Instituição - LEONARDO ESTEVES LOPES