Bowhead whale aerial abundance survey conducted by Alaska Fisheries Science Center, National Marine Mammal Laboratory from 2011-04-19 to 2011-06-11 (NCEI Accession 0133937)
Aerial photographic surveys for bowhead whales were conducted near Point Barrow, Alaska, from 19 April to 6 June in 2011. Approximately 4,594 photographs containing 6,801 bowhead whale images were obtained (not accounting for resightings). The 2011 field season was very successful: we flew 36 out of 49 available days and conducted 49 flights in that time; we were grounded due to weather on 13 days. The longest period of time that we were grounded due to weather (low ceilings/fog) was three days. This occurred after the migration had slowed down, during a time when few whales passed the ice perches according to the ice-based visual survey. The 2011 migration was steady with several peaks (30 April, 4-5 May, 12 May), and then the migration rate slowed down considerably after 14 May. The photographs taken in 2011 are a significant contribution to the bowhead whale photographic catalogue. They will be used to calculate a population estimate that may be used for comparison with the 2011 ice-based estimate and will provide better precision in estimates of bowhead whale life-history parameters.
Complete Metadata
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| description | Aerial photographic surveys for bowhead whales were conducted near Point Barrow, Alaska, from 19 April to 6 June in 2011. Approximately 4,594 photographs containing 6,801 bowhead whale images were obtained (not accounting for resightings). The 2011 field season was very successful: we flew 36 out of 49 available days and conducted 49 flights in that time; we were grounded due to weather on 13 days. The longest period of time that we were grounded due to weather (low ceilings/fog) was three days. This occurred after the migration had slowed down, during a time when few whales passed the ice perches according to the ice-based visual survey. The 2011 migration was steady with several peaks (30 April, 4-5 May, 12 May), and then the migration rate slowed down considerably after 14 May. The photographs taken in 2011 are a significant contribution to the bowhead whale photographic catalogue. They will be used to calculate a population estimate that may be used for comparison with the 2011 ice-based estimate and will provide better precision in estimates of bowhead whale life-history parameters. |
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| identifier | gov.noaa.nodc:0133937 |
| issued | 2015-10-05T00:00:00.000+00:00 |
| keyword |
[
"0133937",
"ANIMALS - GROUP - NUMBER IN GROUP",
"ANIMALS - INDIVIDUAL",
"ANIMALS - INDIVIDUAL - BEHAVIOR",
"ANIMALS - INDIVIDUAL - COUNTS",
"biological data",
"cetacean",
"ICE",
"ICE - COVERAGE",
"ICE - TYPE",
"LATITUDE",
"LONGITUDE",
"MARINE MAMMALS",
"species abundance",
"SPECIES IDENTIFICATION",
"SPECIES IDENTIFICATION - LIFE STAGE",
"VERTEBRATES",
"WIND FORCE",
"binoculars",
"GPS",
"visual observation",
"biological",
"in situ",
"marine mammal observation",
"meteorological",
"survey",
"survey - biological",
"visual observation",
"AIRCRAFT",
"NOAA Alaska Fisheries Science Center, Marine Mammal Laboratory",
"NOAA Alaska Fisheries Science Center, Marine Mammal Laboratory",
"Arctic Ocean",
"Beaufort Sea",
"Chukchi Sea",
"oceanography",
"DOC/NOAA/NMFS/AFSC/MML > Marine Mammal Laboratory, Alaska Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce",
"EARTH SCIENCE > BIOLOGICAL CLASSIFICATION",
"EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES",
"EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS > CETACEANS",
"EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MARINE MAMMALS",
"EARTH SCIENCE > OCEANS > SEA ICE",
"EARTH SCIENCE > OCEANS > SEA ICE > ICE EXTENT",
"EARTH SCIENCE > OCEANS > SEA ICE > ICE TYPES",
"BINOCULAR > BINOCULAR",
"GPS RECEIVERS > GPS RECEIVERS",
"VISUAL OBSERVATIONS > VISUAL OBSERVATIONS",
"OCEAN > ARCTIC OCEAN",
"OCEAN > ARCTIC OCEAN > BEAUFORT SEA",
"OCEAN > ARCTIC OCEAN > CHUKCHI SEA",
"5T50YA"
]
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[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2015-10-16T00:00:00.000+00:00 |
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| rights | otherRestrictions |
| spatial | -148.41013,68.987009,-164.42379,71.974838 |
| temporal | 2011-04-19T00:00:00+00:00/2011-06-11T00:00:00+00:00 |
| title | Bowhead whale aerial abundance survey conducted by Alaska Fisheries Science Center, National Marine Mammal Laboratory from 2011-04-19 to 2011-06-11 (NCEI Accession 0133937) |
