Common opossum population density in an agroforestry system in Bolivia
Acta amaz
; 50(3): 246-251, jul. - set. 2020.
Artigo
em Inglês
| LILACS
| ID: biblio-1118846
Biblioteca responsável:
BR6.1
ABSTRACT
The common opossum, Didelphis marsupialis thrives near human settlements. Understanding its ecology could help planning management decisions about this species, especially in anthropogenic landscapes. Yet, there are no density estimations for this species throughout its distribution range in Bolivia. We estimated the density of D. marsupialis in a rural agricultural community, where agroforestry plantations and fallows cover most of the land. We counted individuals in line transects and used DISTANCE software to calculate density. We covered a total of 70.21 km in 143 night counts, obtaining 38 records of D. marsupialis. We estimated a density of 0.30 individuals ha-1 (SE = 0.062; range: 0.20 - 0.45 individuals ha-1), with a mean encounter rate of 0.54 individuals km-1. Encounter rate varied between habitats, with mean values of 0.20 in secondary forests and 0.64 in agroforestry plantations. Our density estimate is near the lower range of previously reported values for the common opossum in other countries. We argue that our results may reflect the response to the availability of food resources and predation pressure in agroforestry plantations. (AU)
Texto completo:
Disponível
Coleções:
Bases de dados internacionais
Temas:
Análise de dados espaciais em saúde
Base de dados:
LILACS
Assunto principal:
Assentamentos Humanos
/
Características de Residência
/
Densidade Demográfica
/
Recursos Alimentares
/
Didelphis
Idioma:
Inglês
Revista:
Acta amaz
Assunto da revista:
Ciência
Ano de publicação:
2020
Tipo de documento:
Artigo
País de afiliação:
Bolívia
Instituição/País de afiliação:
Universidad Mayor de San Andrés/BO
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