Datové sady / Counts of Alaska Steller sea lion pups conducted on rookeries in Alaska from 1961-06-22 to 2014-07-09 (NCEI Accession 0128189)


Counts of Alaska Steller sea lion pups conducted on rookeries in Alaska from 1961-06-22 to 2014-07-09 (NCEI Accession 0128189)

Vydavatel National Oceanic and Atmospheric Administration, Department of Commerce

Datum vydání před téměř 10 roky

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ongoing release of a series of related datasets

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Creative Commons CCZero

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This database contains counts of Steller sea lion pups on rookeries in Alaska made between 1961 and 2014. Pup counts are conducted in late June-July. Pups are counted from the ground (by walking along the rookery), from cliff-side overlooks, and from aerial images (oblique and vertical orientation). Pup counts conducted in late June-mid July are considered to represent a complete census of pups produced at each site during the year.