High-pressure amphibolite facies dynamic metamorphism and the Mesozoic tectonic evolution of an ancient continental margin, east- central Alaska
Cynthia Dusel-Bacon, V. L. Hansen, J.A. Scala
1995, Journal of Metamorphic Geology (13) 9-24
Ductilely deformed amphibolite facies tectonites comprise two adjacent terranes in east-central Alaska: the northern, structurally higher Taylor Mountain terrane and the southern, structurally lower Lake George subterrane of the Yukon-Tanana terrane. The pressure, temperature, kinematic and age data are interpreted to indicate that the metamorphism of the Taylor Mountain terrane...
Morphological differences in Pacific Coast populations of greater white-fronted geese
D.L. Orthmeyer, John Y. Takekawa, Craig R. Ely, M. Wege, W.E. Newton
1995, Condor (97) 123-132
We examined morphological relationships of three Pacific coast populations of Greater White-fronted Geese (Anser albifrons). Adult geese were captured and measured at three breeding areas in Alaska and two wintering areas in California, 1980-1991. A two-step discriminant function analysis examined morphological differences among the three populations. Stepwise discriminant function procedures...
Seismic images of the Brooks Range, Arctic Alaska, reveal crustal- scale duplexing
G. S. Fuis, A. R. Levander, W. J. Lutter, E. S. Wissinger, Thomas E. Moore, N.I. Christensen
1995, Geology (23) 65-68
An integrated set of seismic reflection and refraction data collected across the Brooks Range, Arctic Alaska, in 1990, has yielded a composite image of this Mesozoic and Cenozoic fold-and-thrust belt that reveals duplexing to lower-crustal depths. Interpretations from this image are as follows....
Rapid toluene mineralization by aquifer microorganisms at Adak, Alaska: Implications for intrinsic bioremediation in cold environments
P. M. Bradley, F. H. Chapelle
1995, Environmental Science & Technology (29) 2778-2781
No abstract available. ...
Sea otters and kelp forests in Alaska: Generality and variation in a community ecological paradigm
J. A. Estes, D. O. Duggins
1995, Ecological Monographs (65) 75-100
Multiscale patterns of spatial and temporal variation in density and population structure were used to evaluate the generality of a three—trophic—level cascade among sea otters (Enhydra lutris), invertebrate herbivores, and macroalgae in Alaska. The paradigm holds that where sea otters occur herbivores are rare and plants are abundant, whereas when...
Mesothermal gold deposits of Westland, New Zealand and southern Alaska: Products of similar tectonic processes?
R.J. Goldfarb, T. Christie, D. Skinner, Peter J. Haeussler, D. C. Bradley
Jeffrey L. Mauk, George, editor(s)
1995, Conference Paper, Proceedings of the 1995 Pacific Rim Congress
No abstract available....
Environmental influence on life-history traits: Growth, survival, and fecundity in Black Brant (Branta bernicla)
James S. Sedinger, Paul L. Flint, Mark S. Lindberg
1995, Ecology (76) 2404-2414
We studied relationships between body size of female Black Brant goslings (Branta bernicla nigricans) late in their growth period and first year survival, eventual adult body size, breeding propensity, and size and volume of clutches they eventually produced to examine the relationship between growth and fitness in this population. We...
Locating waterfowl observations on aerial surveys
W.I. Butler, J.I. Hodges, R.A. Stehn
1995, Wildlife Society Bulletin (23) 148-154
We modified standard aerial survey data collection to obtain the geographic location for each waterfowl observation on surveys in Alaska during 1987-1993. Using transect navigation with CPS (global positioning system), data recording on continuously running tapes, and a computer data input program, we located observations with an average deviation along...
GIS for mapping waterfowl density and distribution from aerial surveys
W.I. Butler, R.A. Stehn, G.R. Balogh
1995, Wildlife Society Bulletin (23) 140-147
We modified standard aerial survey data collection to obtain the geographic location for each waterfowl observation on surveys in Alaska during 1987-1993. Using transect navigation with CPS (global positioning system), data recording on continuously running tapes, and a computer data input program, we located observations with an average deviation along...
Brood amalgamation in the Bristle-thighed Curlew Numenius tahitiensis: process and function
Richard B. Lanctot, Robert E. Gill Jr., T. Lee Tibbitts, Colleen M. Handel
1995, Ibis (137) 559-569
Alloparental care in birds generally involves nonbreeding adults that help at nests or breeding adults that help raise young in communal nests. A less often reported form involves the amalgamation of broods, where one or more adults care for young that are not their own. We observed this phenomenon among...
Population differentiation in Pacific salmon: local adaptation, genetic drift, or the environment?
Milo D. Adkison
1995, Canadian Journal of Fisheries and Aquatic Sciences (52) 2762-2777
Morphological, behavioral, and life-history differences between Pacific salmon (Oncorhynchus spp.) populations are commonly thought to reflect local adaptation, and it is likewise common to assume that salmon populations separated by small distances are locally adapted. Two alternatives to local adaptation exist: random genetic differentiation owing to genetic drift and founder...
Viral hemorrhagic septicemia virus in North America
Theodore R. Meyers, James R. Winton
1995, Annual Review of Fish Diseases (5) 3-24
The first detections of viral hemorrhagic septicemia virus (VHSV) in North America were in Washington State from adult coho (Oncorhynchus kisutch) and chinook (O. tshawytscha) salmon in 1988. Subsequently, VHSV was isolated from adult coho salmon returning to hatcheries in the Pacific Northwest in 1989, 1991 and 1994. These isolates...
Movements, distribution, and population dynamics of polar bears in the Beaufort Sea
Steven C. Amstrup
1995, Thesis
Habitat correlates of Pacific halibut and other groundfish species in Glacier Bay National Park
Gretchen H. Bishop, Philip N. Hooge, S. James Taggart
Daniel R. Engstrom, editor(s)
1995, Conference Paper, Proceedings of the third Glacier Bay science symposium
Originally conceived as a modified Schnabel (1938) design mark-recapture study, the unique random sampling regime of this long line tagging study has allowed us to describe habitat correlates of Pacific halibut (Hippoglossus stenolepis) and other demersal fishes. Pacific halibut and other fish were captured by longline sets of constant length...
Using effort information with change-in-ratio data for population estimation
Mark S. Udevitz, Kenneth H. Pollock
1995, Biometrics (51) 471-481
Most change-in-ratio (CIR) methods for estimating fish and wildlife population sizes have been based only on assumptions about how encounter probabilities vary among population subclasses. When information on sampling effort is available, it is also possible to derive CIR estimators based on assumptions about how encounter probabilities vary over time....
Movements of a polar bear from northern Alaska to northern Greenland
George M. Durner, Steven C. Amstrup
1995, Arctic (48) 338-341
Using satellite telemetry, we monitored the movements of an adult female polar bear (Ursus maritimus) as she traveled from the Alaskan Beaufort Sea coast to northern Greenland. She is the first polar bear known to depart the Beaufort Sea region for an extended period, and the first polar bear known...
Block rotation in east-central Alaska: A framework for evaluating earthquake potential?
R.A. Page, George Plafker, H. Pulpan
1995, Geology (23) 629-632
Geologic and seismic data reveal a set of parallel, active, strike-slip faults in east-central Alaska between the Denali and Tintina fault systems. The faults strike northeast to north-northeast, at a high angle to the bounding dextral fault systems, and exhibit sinistral slip. We...
Critical thermal maxima of coho salmon (Oncorhynchus kisutch) fry under field and laboratory acclimation regimes
John T. Konecki, Carol Ann Woody, Thomas P. Quinn
1995, Canadian Journal of Zoology (73) 993-996
Juvenile coho salmon (Oncorhynchus kisutch) from three populations in Washington State were captured in the field and tested for critical thermal maximum (CTM). Tolerances varied among the populations (mean CTMs were 28.21, 29.13, and 29.23 °C) and exceeded published data from some laboratory tests. The population from a relatively cool...
Western North American shorebirds
Robert E. Gill Jr., Colleen M. Handel, Gary W. Page
Edward T. LaRoe, Gaye S. Farris, Catherine E. Puckett, Peter D. Doran, Michael J. Mac, editor(s)
1995, Book chapter, Our living resources: A report to the nation on the distribution, abundance, and health of U.S. plants, animals, and ecosystems
Shorebirds are a diverse group that includes oystercatchers, stilts, avocets, plovers, and sandpipers. They are familiar birds of seashores, mudflats, tundra, and other wetlands, but they also occur in deserts, high mountains, forests, and agricultural fields. Widespread loss and alteration of these habitats, especially wetlands and grasslands during the past...
Reproduction, preweaning survival, and survival of adult sea otters at Kodiak Island, Alaska
Daniel H. Monson, Anthony R. DeGange
1995, Canadian Journal of Zoology (73) 1161-1169
Radiotelemetry methods were used to examine the demographic characteristics of sea otters inhabiting the leading edge of an expanding population on Kodiak Island, Alaska. Fifteen male and 30 female sea otters were instrumented and followed from 1986 to 1990. Twenty-one percent of females were sexually mature (had pupped) at age...
Metabolizability and partitioning of energy and protein in green plants by yearling lesser snow geese
James S. Sedinger, Robert G. White, Jerry W. Hupp
1995, The Condor (97) 116-122
We measured apparent metabolizability of organic matter, gross energy, nitrogen and cell wall constituents of pelleted alfalfa by Lesser Snow Geese (Chen caerulescens caerulescens. We also used simultaneous measurements of energy expenditure and apparent metabolizable energy intake to estimate heat increment of feeding and net energy for production and maintenance....
Evidence of Emperor Geese breeding in Russia and staging in Alaska
Joel A. Schmutz, Alexander V. Kondratyev
1995, The Auk (112) 1037-1038
Emperor Geese (Chen canagica) breed primarily on the Yukon-Kuskokwim Delta, Alaska (Eisenhauer and Kirkpatrick 1977), but a small, poorly quantified proportion of the world's population is known to breed in the Russia Far East (Kistchinski 1976, 1988, Portenko 1981). Eisenhauer and Kirkpatrick (1977) stated that 80 to 90% of all...
Nesting success of ducks on the central Yukon Flats, Alaska
J. Barry Grand
1995, Canadian Journal of Zoology (73) 260-265
Nesting success was studied at Canvasback Lake and Mallard Lake on the Yukon Flats in interior Alaska in 1989–1991. Simple estimates of nesting success were computed using two techniques that assume a constant daily survival rate (DSR). Maximum-likelihood estimates of nesting success for all ducks, assuming constant DSR, ranged among...
Correlation of Ordovician rocks of northern Alaska
Anita G. Harris, Julie A. Dumoulin, John E. Repetski, Claire Carter
John D. Cooper, Mary L. Droser, Stanley C. Finney, editor(s)
1995, Conference Paper, Ordovician odyssey: Short papers for the seventh international symposium on the Ordovician system (SEPM Book 77)
The Ordovician sequences presented in this report were chosen to cover a range of depositional and structural settings found in northern Alaska. Consequently, the quality of lithostratigraphic, paleontologic, and sedimentologic data is variable. Until 1982, Ordovician rocks in northern Alaska were known only from a few, widely separated localities. Since...
Prey preference of Pacific halibut (Hippoglossus stenolepis) in Glacier Bay National Park
Liz Chilton, Philip N. Hooge, S. James Taggart
Daniel R. Engstrom, editor(s)
1995, Conference Paper, Proceedings of the third Glacier Bay science symposium
Stomach contents were collected from sport-caught halibut in Glacier Bay National Park. Stomach samples containing a combination of fish and invertebrate species were observed less frequently than expected. Small, subtidal, noncommercial crab and cod-like fish (Gadidae) appear to be the most important prey items. In thc dict of Pacific halibut....
