Description

The National Marine Fisheries Service (NMFS) has conducted aerial counts of Cook Inlet beluga whales (Delphinapterus leucas) from 1993 to 2014 (excluding 2013). Nearly all counts were conducted during the month of June. The routine nature of these counts and the consistency in research protocol lend themselves to inter-annual trend analyses. Beginning in 2005, an aerial survey was added during the month of August to document calving groups within the upper Inlet (north of East and West Foreland). Research protocol has been based on paired observers on the shoreward side of the aircraft and a single observer and computer operator on the offshore side independently searching for marine mammals. Data on environmental conditions, time, location, species, and inclinometer angle were collected for each sighting. The counting protocol included multiple passes near each beluga group while simultaneously collecting video footage. The counting system and observer performance has been tested through paired, independent observational effort. Information about the Cook Inlet beluga whale projects conducted at NOAA can be found here: http://alaskafisheries.noaa.gov/protectedresources/whales/beluga/research.htm#ci.

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  http://catalog.data.gov/dataset/afsc-nmml-beluga-whale-aerial-survey-in-cook-inlet-alaska-1993-2014 Do you think this data is incorrect? Let us know

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