Common opossum population density in an agroforestry system in Bolivia
Acta amaz
;
50(3): 246-251, jul. - set. 2020.
Artículo
en Inglés
| LILACS
| ID: biblio-1118846
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:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Asentamientos Humanos
/
Características de la Residencia
/
Densidad de Población
/
Recursos Alimentarios
/
Didelphis
Tipo de estudio:
Estudio pronóstico
País/Región como asunto:
America del Sur
/
Bolivia
Idioma:
Inglés
Revista:
Acta amaz
Asunto de la revista:
Ciencia
Año:
2020
Tipo del documento:
Artículo
País de afiliación:
Bolivia
Institución/País de afiliación:
Universidad Mayor de San Andrés/BO
Similares
MEDLINE
...
LILACS
LIS