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Cascadia Research Blue Whale Photo IDs for US West Coast, 1972-2004
Citation
Calambokidis, J. and J. Barlow. 2004. Abundance of blue and humpback whales in the eastern North Pacific estimated by capture-recapture and line-transect methods. Marine Mammal Science. 20(1):63-85

Access data
Availability: Creative Commons License This dataset is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Description
Dataset of blue whale sighting records from the eastern North Pacific from 1975 through 2004 (data collection is continuing). more

This dataset consists of 6,560 sighting records, including at least 1,803 uniquely identified blue whales. These were collected by Cascadia Research and collaborators from the eastern North Pacific from 1975 through 2004 (data collection is continuing). The primary extent of this dataset includes waters off California, Oregon, and Washington from 1986 to 2004, which accounts for over 6,000 of the records. Additional sighting records are from other regions of the North Pacific including the Eastern Tropical Pacific, British Columbia, and Alaska. These data represent the most extensive database of blue whale sightings available from the waters off the western United States and have provided the primary information available on movements and abundance of eastern North Pacific blue whales. Effort was not evenly distributed throughout the region so sighting locations are biased towards areas of highest effort. ID field links resightings of the same individual. Purpose Data were gathered to document movements, population structure and abundance of blue whales in the eastern North Pacific (see Calambokidis and Barlow 2004, Calambokidis and Steiger 1997, Calambokidis et al. 1990).

Scope
Themes:
Biology > Mammals
Keywords:
Marine, I, Pacific, Cetacea

Geographical coverage
I, Pacific [Marine Regions]

Temporal coverage
1 December 1975 - 2 November 2004

Taxonomic coverage
Cetacea [WoRMS]

Contributor
Cascadia Research Collective, moredata owner

Related datasets
Published in:
OBIS-SEAMAP: Spatial Ecological Analysis of Megavertebrate Populations, more

Publication
Based on this dataset:
Calambokidis, J.; Barlow, J. (2004). Abundance of blue and humpback whales in the Eastern North Pacific estimated by capture-recapture and line-transect methods. Mar. Mamm. Sci. 20(1): 63-85. hdl.handle.net/10.1111/j.1748-7692.2004.tb01141.x, more

URLs

Dataset information:

Dataset status: Completed
Data type: Data
Data origin: Monitoring: field survey
Metadatarecord created: 2012-11-27
Information last updated: 2013-01-23
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