• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2024-04-17T22:40:21.000+00:00

This dataset supports efforts to estimate the abundance and trends in population size of Alaska harbor seals. Annual surveys of harbor seal populations are fundamental to estimation of seal...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2025-07-16T14:20:00.000+00:00

Aerial surveys of coastal Alaska are the primary method for estimating abundance of harbor seals. A particular challenge associated with aerial surveys of harbor seals is maintaining consistent...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2024-04-17T22:41:39.000+00:00

This dataset supports efforts to estimate the abundance and trends in population size of Alaska harbor seals. Annual surveys of harbor seal populations are fundamental to estimation of seal...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2015-01-01T00:00:00.000+00:00

Aerial surveys of coastal Alaska are the primary method for estimating abundance of harbor seals. A particular challenge associated with aerial surveys of harbor seals is maintaining consistent...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2025-05-15T19:16:03.000+00:00

Floating glacial ice serves as a haul-out substrate for a significant number (10-15%) of Alaskan harbor seals, and thus surveying tidewater glacial fjords is an important component of statewide...

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• Organization: Department of the Interior
• Updated: 2025-05-13T00:00:00Z

Population monitoring studies of harbor seals in Glacier Bay National Park, Alaska, have spanned five decades from the 1970’s to the present (Streveler 1979; Calambokidis et al. 1987; Mathews &...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2015-02-03T00:00:00.000+00:00

This dataset provides counts of harbor seals from aerial surveys over Iliamna Lake, Alaska, USA. The data have been collated from three previously published sources (Mathisen and Kline 1992; Small...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2025-07-16T14:19:39.000+00:00

This data layer represents the 12 uniquely identified stocks of harbor seals found in Alaskan waters. Stocks were identified by NMFS and their co-management partners, the Alaska Native Harbor Seal...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2024-04-17T22:41:56.000+00:00

Aerial surveys were conducted during 1983–2006 in the Ketchikan, Sitka, Kodiak, and Bristol Bay areas of Alaska to estimate trends in abundance of harbor seals.

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• Organization: Department of the Interior
• Updated: 2025-05-14T00:00:00Z

Steller sea lions (Eumetopias jubatus) are a highly social pinniped species and large aggregations of Steller sea lions occur in Glacier Bay National Park and Preserve, Alaska. Since the 1970s,...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2022-05-31T00:00:00.000+00:00

This dataset contains aerial survey data from the surveys described below. The Bureau of Ocean Energy Management (BOEM), formerly the Minerals Management Service (MMS), and its precursor, the...

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