| Registro completo |
| Provedor de dados: |
RChHN
|
| País: |
Chile
|
| Título: |
Abundance estimation of Commersons dolphin in the eastern area of the Strait of Magallan-Chile
|
| Autores: |
LESCRAUWAET,ANNE-CATHERINE
GIBBONS,JORGE
GUZMAN,LEONARDO
SCHIAVINI,ADRIAN
|
| Data: |
2000-09-01
|
| Ano: |
2000
|
| Palavras-chave: |
Commersons dolphin
Cephalorhynchus commersonii
Strait of Magellan
Line transect sampling
Habitat preference
|
| Resumo: |
Abundance of Commersons dolphin, Cephalorhynchus commersonii (Lacépède 1804), in the eastern portion of the Strait of Magellan was estimated by means of aerial transects in autumn (June 1996). Using a helicopter at 100 m altitude and 129 km h-1, 58 sightings representing 98 animals (average group size Es = 1.7, SD = 0.13) along 818.6 km of linear transects were recorded. Data analysis with "Distance" software gave a density estimation of 0.34 ind km-2 (CV = 0.27) and a population size of 1,206 (95% CI 711-2,049 individuals). Commersons dolphin showed a habitat preference for the narrows, compared to open waters in the study area.
|
| Tipo: |
Journal article
|
| Idioma: |
Inglês
|
| Identificador: |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000300010
|
| Editor: |
Sociedad de Biología de Chile
|
| Formato: |
text/html
|
| Fonte: |
Revista chilena de historia natural v.73 n.3 2000
|
