Seasonal acoustic presence of fin and bowhead whales in relation to prey abundance and oceanographic environments in the southern Chukchi Sea

2016 ◽  
Vol 140 (4) ◽  
pp. 3361-3361
Author(s):  
Koki Tsujii ◽  
Mayuko Otsuki ◽  
Tomonari Akamatsu ◽  
Ikuo Matsuo ◽  
Kazuo Amakasu ◽  
...  
Keyword(s):  
Chukchi Sea ◽  
Prey Abundance ◽  
Bowhead Whales

scholarly journals THE DISTRIBUTION OF BOWHEAD WHALES, BALAENA MYSTICETUS, IN THE CHUKCHI SEA

1986 ◽  
Vol 2 (3) ◽  
pp. 214-222 ◽  
Author(s):  
R. V. Miller ◽  
D. J. Rugh ◽  
J. H. Ohnson
Keyword(s):  
Chukchi Sea ◽  
Balaena Mysticetus ◽  
Bowhead Whales

scholarly journals Bowhead and Gray Whale Distributions, Sighting Rates, and Habitat Associations in the Eastern Chukchi Sea, Summer and Fall 2009–15, with a Retrospective Comparison to 1982–91

ARCTIC ◽  
2016 ◽  
Vol 69 (4) ◽  
pp. 359 ◽  
Author(s):  
Janet T. Clarke ◽  
Amy S. Kennedy ◽  
Megan C. Ferguson
Keyword(s):  
Habitat Selection ◽  
Chukchi Sea ◽  
Habitat Associations ◽  
Bowhead Whale ◽  
Line Transect ◽  
Gray Whale ◽  
Depth Zone ◽  
Gray Whales ◽  
Bowhead Whales ◽  
Preferred Habitat

We analyzed data from line-transect aerial surveys for marine mammals conducted in the eastern Chukchi Sea (67˚–72˚ N, 157˚–169˚ W) in July to October of 2009–15 to investigate bowhead and gray whale distributions, behaviors, sighting rates, and habitat selection preferences, the last of which allowed direct comparison with results from data collected in this area in 1982–91. Bowhead whales use the eastern Chukchi Sea primarily for migrating between the Beaufort Sea and the Bering Sea, while gray whales use the area to feed on locally abundant benthic amphipods and other prey. Bowhead whales were observed during all survey months and were distributed up to 300 km offshore west and southwest of Point Barrow, Alaska, but without a defined migratory corridor in either summer (July-August) or fall (September-October). Bowhead whale sighting rates (whales per km on effort) were highest in the shelf/trough (51–200 m North) depth zone in the northeastern Chukchi Sea in both summer and fall. This pattern was reflected in habitat selection ratios, which found bowhead whales in summer and fall selecting primarily shelf/trough habitat in the northeastern Chukchi Sea, with shelf habitat (36 – 50 m) being preferred secondarily. Gray whales were observed in all survey months and were distributed primarily within ~95 km of shore between Point Barrow and Icy Cape in the northeastern Chukchi Sea, and about 60–115 km southwest of Point Hope in the southern Chukchi Sea. In both summer and fall, gray whale sighting rates and habitat selection ratios were highest in the shelf/trough (51–200 m South) depth zone in the southern Chukchi Sea. In the northeastern part of the study area, gray whale sighting rates and habitat selection ratios both identified coastal habitat (≤ 35 m) as preferred habitat in summer and shelf/trough (51–200 m North) as preferred habitat in fall. Distribution and habitat associations of bowhead and gray whales remained similar over the 34-year time span with one exception: gray whale preference for shelf/trough habitat in the southern Chukchi Sea is now evident throughout summer and fall, whereas three decades ago gray whale preference for that area was limited to fall only.

scholarly journals Fall and Winter Movements of Bowhead Whales (Balaena mysticetus) in the Chukchi Sea and Within a Potential Petroleum Development Area

ARCTIC ◽  
2010 ◽  
Vol 63 (3) ◽  
Author(s):  
Lori T. Quakenbush ◽  
John J. Citta ◽  
John C. George ◽  
Robert J. Small ◽  
Mads Peter Heide-Jørgensen
Keyword(s):  
Chukchi Sea ◽  
Balaena Mysticetus ◽  
Bowhead Whales ◽  
Development Area ◽  
Petroleum Development

scholarly journals Oceanographic characteristics associated with autumn movements of bowhead whales in the Chukchi Sea

2018 ◽  
Vol 152 ◽  
pp. 121-131 ◽  
Author(s):  
John J. Citta ◽  
Stephen R. Okkonen ◽  
Lori T. Quakenbush ◽  
Wieslaw Maslowski ◽  
Robert Osinski ◽  
...  
Keyword(s):  
Chukchi Sea ◽  
Bowhead Whales

Passive acoustic survey of bowhead whales in the Chukchi Sea.

2009 ◽  
Vol 125 (4) ◽  
pp. 2549-2549
Author(s):  
Julien Delarue ◽  
Marjo Laurinolli ◽  
Bruce Martin
Keyword(s):  
Chukchi Sea ◽  
Acoustic Survey ◽  
Bowhead Whales ◽  
Passive Acoustic

Bowhead whale autumn distribution and relative abundance in relation to oil and gas lease areas in the northeastern Chukchi Sea

Polar Record ◽  
1993 ◽  
Vol 29 (170) ◽  
pp. 209-214 ◽  
Author(s):  
Sue E. Moore ◽  
Janet T. Clarke
Keyword(s):  
Relative Abundance ◽  
Oil And Gas ◽  
Chukchi Sea ◽  
Bowhead Whale ◽  
Bowhead Whales ◽  
Aerial Surveys ◽  
Westward Migration ◽  
Offshore Oil And Gas ◽  
Offshore Oil

ABSTRACTBowhead whales pass near or through offshore oil and gas lease areas in the northeastern Chukchi Sea during their westward migration each autumn. Results of aerial surveys conducted from mid-September through October 1982–1990 indicate that whale distribution overlapped lease area boundaries north and east of Point Barrow, Alaska. Bowhead relative abundance was high throughout the fall in nearshore sub-blocks east, north, and southwest of Point Barrow, with somewhat lower indices in offshore sub-blocks northwest of Point Barrow.

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