Banca de QUALIFICAÇÃO: LORRAN SAMARITANO LOPES

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : LORRAN SAMARITANO LOPES
DATE: 18/09/2024
TIME: 14:00
LOCAL: Online
TITLE:

POPULATION ECOLOGY AND ACTIVITY PATTERN OF THE JAGUAR (Panthera onca) IN RELATION TO HUMAN ACTIVITY IN AN AREA UNDER FOREST MANAGEMENT, RONDÔNIA.

KEY WORDS:

Camera traps, Carnivores, Felids, Amazon, Private areas.

PAGES: 78
BIG AREA: Ciências Biológicas
AREA: Zoologia
SUMMARY:

This study brings together the first systematic information on population density estimates and activity patterns of jaguars (Panthera onca) for the state of Rondônia, specifically in a private area known as Fazenda Manoa, which conducts sustainable forest management as one of its main activities and is located in the municipality of Cujubim. The main objectives of this study include characterizing the jaguar population present in the Fazenda Manoa area by evaluating some population parameters (number of individuals, population density, sex ratio, among other information) and estimating its activity patterns, aiming to verify possible impacts of human activity on the species' behavior. For data collection, the camera trapping method was used, with sampling taking place over 60 days, between July and September 2023, on roads in two sampling sub-areas within the farm: No Management (roads with little human activity) and With Management (roads with high human activity). The sampling was carried out in a rotational system, with 15 points sampled over 30 days in the No Management sub-area and another 15 sampling points in the With Management sub-area, which also remained for 30 days. At each point, two opposite camera traps were used, aiming to capture both flanks of the jaguars for subsequent identification. Through a total effort of 1,624 trap nights, 499 photographs of jaguars were obtained, where a total of 12 individuals, eight males and four females (sex ratio = 2:1), were identified. The population abundance was estimated at 24 individuals (SE ± 6.62), which was evaluated through the conventional capture-recapture model in the CAPTURE software, with sampling occasions of 6 days each. The effective sampling area was measured by HMMDM (half of the mean maximum distance moved), which resulted in a total of 699 km², generating a jaguar population density for Fazenda Manoa of 0.034 individuals/km² or 3.4 individuals per 100 km² for the study area. The comparison of the activity patterns of the target species between the sub-areas revealed it to be predominantly nocturnal, with jaguars showing high temporal overlap Δ = 0.93 (CI 0.83 – 1.00) between the sub-areas. However, the activity pattern between jaguars and humans was significantly different, both in the No Management sub-area Δ = 0.37 (CI 0.27 – 0.46) and in the With Management sub-area Δ = 0.52 (CI 0.40 – 0.63), with jaguars demonstrating a tendency to temporally avoid human activity peaks in the farm area. The greater temporal overlap between jaguar and human activity in the With Management sub-area suggests that low-impact sustainable forest management may not generate significant disturbances, allowing jaguars to use management roads during much of the day.

COMMITTEE MEMBERS:
Presidente - 2282448 - MARILUCE REZENDE MESSIAS
Interno - ***.701.522-** - MARCELO LUCIAN FERRONATO - UNIR
Interna - 1387002 - OSVANDA SILVA DE MOURA
Externo ao Programa - 2279607 - ARIEL ADORNO DE SOUSA - UNIRExterno à Instituição - CARLOS RODRIGO BROCARDO