Abundance estimation of Commersons dolphin in the eastern area of the Strait of Magallan-Chile
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 s...
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| Lenguaje: | English |
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Sociedad de Biología de Chile
2000
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oai:scielo:S0716-078X20000003000102000-11-09Abundance estimation of Commersons dolphin in the eastern area of the Strait of Magallan-ChileLESCRAUWAET,ANNE-CATHERINEGIBBONS,JORGEGUZMAN,LEONARDOSCHIAVINI,ADRIAN Commersons dolphin Cephalorhynchus commersonii Strait of Magellan Line transect sampling habitat preference 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.info:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.73 n.3 20002000-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000300010en10.4067/S0716-078X2000000300010 |
| institution |
Scielo Chile |
| collection |
Scielo Chile |
| language |
English |
| topic |
Commersons dolphin Cephalorhynchus commersonii Strait of Magellan Line transect sampling habitat preference |
| spellingShingle |
Commersons dolphin Cephalorhynchus commersonii Strait of Magellan Line transect sampling habitat preference LESCRAUWAET,ANNE-CATHERINE GIBBONS,JORGE GUZMAN,LEONARDO SCHIAVINI,ADRIAN Abundance estimation of Commersons dolphin in the eastern area of the Strait of Magallan-Chile |
| description |
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. |
| author |
LESCRAUWAET,ANNE-CATHERINE GIBBONS,JORGE GUZMAN,LEONARDO SCHIAVINI,ADRIAN |
| author_facet |
LESCRAUWAET,ANNE-CATHERINE GIBBONS,JORGE GUZMAN,LEONARDO SCHIAVINI,ADRIAN |
| author_sort |
LESCRAUWAET,ANNE-CATHERINE |
| title |
Abundance estimation of Commersons dolphin in the eastern area of the Strait of Magallan-Chile |
| title_short |
Abundance estimation of Commersons dolphin in the eastern area of the Strait of Magallan-Chile |
| title_full |
Abundance estimation of Commersons dolphin in the eastern area of the Strait of Magallan-Chile |
| title_fullStr |
Abundance estimation of Commersons dolphin in the eastern area of the Strait of Magallan-Chile |
| title_full_unstemmed |
Abundance estimation of Commersons dolphin in the eastern area of the Strait of Magallan-Chile |
| title_sort |
abundance estimation of commersons dolphin in the eastern area of the strait of magallan-chile |
| publisher |
Sociedad de Biología de Chile |
| publishDate |
2000 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000300010 |
| work_keys_str_mv |
AT lescrauwaetannecatherine abundanceestimationofcommersonsdolphinintheeasternareaofthestraitofmagallanchile AT gibbonsjorge abundanceestimationofcommersonsdolphinintheeasternareaofthestraitofmagallanchile AT guzmanleonardo abundanceestimationofcommersonsdolphinintheeasternareaofthestraitofmagallanchile AT schiaviniadrian abundanceestimationofcommersonsdolphinintheeasternareaofthestraitofmagallanchile |
| _version_ |
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