Photographic surveys were conducted near Point Barrow during the spring migrations of the Bering-... more Photographic surveys were conducted near Point Barrow during the spring migrations of the Bering-Chukchi- Beaufort Seas stock of bowhead whales in 2003 and 2004. The 2003 survey was the most complete photographic survey of the population conducted to date. Estimates of 2003-2004 bowhead abundance were computed from the photo-identification data using a closed population model and the modified Petersen estimate
Aerial photographic surveys were conducted near Point Barrow, Alaska, from 12 April to 6 June in ... more Aerial photographic surveys were conducted near Point Barrow, Alaska, from 12 April to 6 June in 2003, from 18 April to 7 June in 2004, from 6 to 9 September 2005, and 1 to 6 September 2006, and in the Bering Sea, Alaska, from 9 April to 2 May 2005. The 2003 survey was the most complete photographic coverage of
Counts of southbound migrating whales at Granite Canyon, California, form the basis of abundance ... more Counts of southbound migrating whales at Granite Canyon, California, form the basis of abundance estimation for the eastern North Pacific stock of gray whales (Eschrichtius robustus). In 23 years, between 1967 and 2007, counts of the number of observed pods have been rescaled by a series of correction factors to provide abundance estimates. The "traditional" counting approach involved single observers
... DAVID RUGH 1 , MARCIA MUTO 1 , RODERICK HOBBS 1 , KIM SHELDEN 1 , CYNTHIA D'... more ... DAVID RUGH 1 , MARCIA MUTO 1 , RODERICK HOBBS 1 , KIM SHELDEN 1 , CYNTHIA D'VINCENT 2 , ... These estimates may provide the first documentation of a stock of large whales approaching carrying capacity (Wade and DeMaster, 1998). ...
The National Marine Fisheries Service conducted a photographic aerial survey of belugas (Delphina... more The National Marine Fisheries Service conducted a photographic aerial survey of belugas (Delphinapterus leucas) in Cook Inlet, Alaska, 11-12 August 2005, with the express purpose of documenting the proportion of calves at a time when it was likely that all calves of the year were born. During the standard abundance surveys conducted in early June, some calves are probably not
ABSTRACT—A r eview of available infor-,although ,such events likely affect water mation describin... more ABSTRACT—A r eview of available infor-,although ,such events likely affect water mation describing habitat associations for quality and, potentially, prey availability. belugas, Delphinapterus leucas, in Cook Similarly, although sewage effluent and dis- Inlet was undertaken to complement,popu-,charges from industrial and military activi lation assessment surveys from 1993–2000. ties along Cook Inlet negatively affect water Available data for physical, biological, and
Photographic surveys were conducted near Point Barrow during the spring migrations of the Bering-... more Photographic surveys were conducted near Point Barrow during the spring migrations of the Bering-Chukchi- Beaufort Seas stock of bowhead whales in 2003 and 2004. The 2003 survey was the most complete photographic survey of the population conducted to date. Estimates of 2003-2004 bowhead abundance were computed from the photo-identification data using a closed population model and the modified Petersen estimate
Aerial photographic surveys were conducted near Point Barrow, Alaska, from 12 April to 6 June in ... more Aerial photographic surveys were conducted near Point Barrow, Alaska, from 12 April to 6 June in 2003, from 18 April to 7 June in 2004, from 6 to 9 September 2005, and 1 to 6 September 2006, and in the Bering Sea, Alaska, from 9 April to 2 May 2005. The 2003 survey was the most complete photographic coverage of
Counts of southbound migrating whales at Granite Canyon, California, form the basis of abundance ... more Counts of southbound migrating whales at Granite Canyon, California, form the basis of abundance estimation for the eastern North Pacific stock of gray whales (Eschrichtius robustus). In 23 years, between 1967 and 2007, counts of the number of observed pods have been rescaled by a series of correction factors to provide abundance estimates. The "traditional" counting approach involved single observers
... DAVID RUGH 1 , MARCIA MUTO 1 , RODERICK HOBBS 1 , KIM SHELDEN 1 , CYNTHIA D'... more ... DAVID RUGH 1 , MARCIA MUTO 1 , RODERICK HOBBS 1 , KIM SHELDEN 1 , CYNTHIA D'VINCENT 2 , ... These estimates may provide the first documentation of a stock of large whales approaching carrying capacity (Wade and DeMaster, 1998). ...
The National Marine Fisheries Service conducted a photographic aerial survey of belugas (Delphina... more The National Marine Fisheries Service conducted a photographic aerial survey of belugas (Delphinapterus leucas) in Cook Inlet, Alaska, 11-12 August 2005, with the express purpose of documenting the proportion of calves at a time when it was likely that all calves of the year were born. During the standard abundance surveys conducted in early June, some calves are probably not
ABSTRACT—A r eview of available infor-,although ,such events likely affect water mation describin... more ABSTRACT—A r eview of available infor-,although ,such events likely affect water mation describing habitat associations for quality and, potentially, prey availability. belugas, Delphinapterus leucas, in Cook Similarly, although sewage effluent and dis- Inlet was undertaken to complement,popu-,charges from industrial and military activi lation assessment surveys from 1993–2000. ties along Cook Inlet negatively affect water Available data for physical, biological, and
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