Publications
USGS research activities relevant to Alaska have yielded more than 9400 historical publications. This page features some of the most recent newsworthy research findings.
Filter Total Items: 3110
Aerial videography for estimating goose populations staging in Izembek Lagoon, Alaska Aerial videography for estimating goose populations staging in Izembek Lagoon, Alaska
We conducted experimental photographic surveys of black brant and Canada geese in a pre-migration staging area on the Alaska Peninsula to compare precision and efficiency of this technique to currently employed ocular estimates. Video and digital cameras sensitive to near infrared and visible radiation were tested at various altitudes and with lenses of different focal length. Using...
Authors
R.M. Anthony, R.A. Stehn, W.H. Anderson
Hematology and clinical chemistry of sea otters vaptured in Prince William Sound, Alaska following the Exxon Valdez Oil Spill Hematology and clinical chemistry of sea otters vaptured in Prince William Sound, Alaska following the Exxon Valdez Oil Spill
Hematologic and serum chemical analyses were performed on sea otter blood samples collected from 31 adult males, 63 adult females, and 42 pups captured in western Prince William Sound (oiled area), and 12 adult males, 40 adult females, and 15 pups captured in eastern Prince William Sound (unoiled area) in 1989 and 1990. Hematologic differences between eastern and western adult males were...
Authors
A.H. Rebar, Brenda E. Ballachey, D.L. Bruden, Kimberly A. Kloecker
Concordance of seabird population parameters: Analytical methods and interpretation Concordance of seabird population parameters: Analytical methods and interpretation
In an ecological context, concordance may be defined as the tendency for paired values of some parameter, such as the annual productivity of bird species, to show similar directions and magnitudes of deviation from the mean. Where concordance among populations is high, there is an implied similarity of the ecological factors affecting performance. Conversely, if populations behave...
Authors
Scott A. Hatch
Dunlin (Calidris alpina) Dunlin (Calidris alpina)
No abstract available
Authors
Nils Warnock, Robert E. Gill
Stratigraphic framework of the Alaska Peninsula Stratigraphic framework of the Alaska Peninsula
No abstract available.
Authors
Robert L. Detterman, J. E. Case, J. W. Miller, Frederic H. Wilson, M. E. Yount
Volcanic activity in Alaska: Summary of events and response of the Alaska Volcano Observatory 1993 Volcanic activity in Alaska: Summary of events and response of the Alaska Volcano Observatory 1993
During 1993, the Alaska Volcano Observatory (AVO) responded to episodes of eruptive activity or false alarms at nine volcanic centers in the state of Alaska. Additionally, as part of a formal role in KVERT (the Kamchatkan Volcano Eruption Response Team), AVO staff also responded to eruptions on the Kamchatka Peninsula, details of which are summarized in Miller and Kurianov (1993). In...
Authors
Christina A. Neal, Robert G. McGimsey, Michael P. Doukas
Overview of studies to determine injury caused by the Exxon Valdez Oil Spill to marine mammals Overview of studies to determine injury caused by the Exxon Valdez Oil Spill to marine mammals
Marine mammal damage assessment studies after the Exxon Valdez oil spill concentrated on sea otters, harbor seals, Steller sea lions, killer whales, and humpback whales. Sea otter and harbor seals were the most affected marine mammal; it was estimated that several thousand otters and several hundred harbor seals died within months of the spill. Steller sea lion, harbor seal
Authors
Thomas R. Loughlin, Brenda E. Ballachey, B.A. Wright
Seaducks: A time for action Seaducks: A time for action
Seaducks (Tribe Mergini) are a diverse group of birds. In North America, many species nest in boreal or arctic habitats in Canada and Alaska and winter in ice-free coastal, marine, and freshwater habitats. Data from long- term surveys, population studies, and local knowledge suggest that some populations and species of seaducks have declined over the past decades. In most cases, the...
Authors
Margaret R. Petersen, Mary E. Hogan
The Emperor Goose: An annotated bibliography The Emperor Goose: An annotated bibliography
This bibliography contains more than 500 published and unpublished references relevant to the emperor goose (Chen canagica). The referenced works date from the early exploration of Beringia and Alaska through the formal description of the species in 1802 to 1993.
Authors
Robert F. Rockwell, Margaret R. Petersen, Joel A. Schmutz
Activity and feeding of ovigerous Dungeness crabs in Glacier Bay, Alaska Activity and feeding of ovigerous Dungeness crabs in Glacier Bay, Alaska
The activity and feeding behavior of ovigerous Dungeness crabs, Cancer magister, were examined as part of a long-term study. Part of this study surveyed Bartlett Cove in Glacier Bay, Alaska, during the spring of 1994 where 50 commercial pots were soaked for 24 hours. Catch per unit effort (CPUE), dispersion, and stomach samples of male, nonovigerous female, and ovigerous female crabs...
Authors
Deborah A. Schultz, Thomas C. Shirley, Charles E. O’Clair, S. James Taggart
Migration, fidelity, and use of autumn staging grounds in Alaska by Cackling Canada Geese Branta canadensis minima Migration, fidelity, and use of autumn staging grounds in Alaska by Cackling Canada Geese Branta canadensis minima
Cackling Canada Geese were studied annually (1985-88) on autumn migration staging areas in Alaska during a period of rapid population growth. Geese concentrated at two estuaries (Ugashik Bay and Cinder Lagoon) along the north side of the Alaska Peninsula. Birds arrived on the staging areas in late September, numbers peaked during mid-October, and departure occurred by late October or...
Authors
Robert E. Gill, Christopher Babcock, Colleen M. Handel, William R. Butler, Dennis G. Raveling
Forage digestibility and intake by lesser snow geese: effects of dominance and resource heterogeneity Forage digestibility and intake by lesser snow geese: effects of dominance and resource heterogeneity
We measured forage intake, digestibility, and retention time for 11 free-ranging, human-imprinted lesser snow geese (Chen caerulescens caerulescens) as they consumed underground stembases of tall cotton-grass (Eriophorum angustifolium) on an arctic staging area in northeastern Alaska. Geese fed in small patches (x̄=21.5 m2) of forage that made up ≤3% of the study area and consisted of...
Authors
Jerry W. Hupp, Robert G. White, James S. Sedinger, Donna G. Robertson