Data/hora: 05/06/2024 08:18:14

Biblioteca(s): | Embrapa Pantanal.
Data corrente: | 20/10/2015
Data da última atualização: | 17/03/2016
Autoria: | FERREGUETTI, A. C.; TOMAS, W. M.; BERGALLO, H. G.
Afiliação: | ÁTILLA C. FERREGUETTI, UERJ; WALFRIDO MORAES TOMAS, CPAP; HELENA G. BERGALLO.
Título: | Density, occupancy, and activity pattern of two sympatric deer (Mazama) in the Atlantic Forest, Brazil.
Ano de publicação: | 2015
Fonte/Imprenta: | Journal of Mammalogy, v. 96, n. 6, p. 1245-1254, 2015.
DOI: | 10.1093/jmammal/gyv132
Idioma: | Inglês
Conteúdo: | The red brocket (Mazama americana) and gray brocket deer (Mazama gouazoubira) are sympatric in the Atlantic Forest and present a number of ecological similarities in their diet and habitat use, although interspecific competition in these species is poorly understood. This study aimed to compare abundance and produce evidence of niche partitioning between these species. We estimated population density, activity patterns, habitat occupancy, and detection probabilities for the 2 species in a large remnant of the Atlantic Forest of Espírito Santo, Brazil. Abundance was estimated using the distance sampling technique, and occupancy, detectability, and activity patterns were assessed using camera-trap monitoring at 39 sample sites over a 1-year period. During surveys, we obtained 44 sightings of M. americana and 74 of M. gouazoubira, with 199 records in which the species was not discriminated. We applied a correction for the unidentified sightings to avoid underestimating density. The corrected population size estimates were 3,668 individuals (confidence interval [CI] 95%: 2,989–4,601) for M. americana and 6,701 (CI 95%: 5,857–7,667) for M. gouazoubira. Occupancy probability for M. americana was best described by the large trees density (diameter at breast height > 50cm) and the edge forest distance, while M. gouazoubira did not present any habitat preferences based on the covariates used for modeling. M. americana was mostly nocturnal, whereas M. gouazoubira was active mainly during the day. We conclude that, despite the abundance of these sympatric species, and their occupation of the same habitats, they may avoid competing for habitat and feeding resources through differences in their activity patterns.
Palavras-Chave: | Atlantic Forest; Border effect; Competition; Habitat selection.
Thesagro: | Habitat; Veado.
Thesaurus Nal: | Cervidae; Community ecology; Deer; Forest habitats; Niches.
Categoria do assunto: | L Ciência Animal e Produtos de Origem Animal
Registro original: | Embrapa Pantanal (CPAP)
Exemplares: | CPAP - (59378-1) - UPC - SP - PP - SP18099 -  - 18099 - DIS