Ordovician "sphinctozoan" sponges from Prince of Wales Island, southeastern Alaska
J.K. Rigby, Susan M. Karl, R. B. Blodgett, J.F. Baichtal
2005, Journal of Paleontology (79) 862-870
A faunule of silicified hypercalcified "sphinctozoan" sponges has been recovered from a clast of Upper Ordovician limestone out of the Early Devonian Karheen Formation on Prince of Wales Island in southeastern Alaska. Included in the faunule are abundant examples of the new genus Girtyocoeliana, represented by Girtyocoeliana epiporata (Rigby and...
Breeding ecology of Spectacled Eiders Somateria fischeri in Northern Alaska
J. Bart, S.L. Earnst
2005, Wildfowl (55) 83-98
Spectacled Eiders Somateria fischeri were studied on the Colville River delta during 1994-1999, prior to oil field development, to document aspects of breeding biology that are poorly known, especially for northern-nesting populations. Both sexes arrived June 6-12; many males remained for only about 10 days. Density on the 178-km2 study...
Role of land-surface changes in arctic summer warming
F. S. Chapin III, M. Sturm, Mark C. Serreze, J.P. McFadden, J.R. Key, A.H. Lloyd, A. D. McGuire, T.S. Rupp, A.H. Lynch, Joshua P. Schimel, J. Beringer, W.L. Chapman, H.E. Epstein, E.S. Euskirchen, L. D. Hinzman, G. Jia, C.-L. Ping, K.D. Tape, C.D.C. Thompson, D.A. Walker, J.M. Welker
2005, Science (310) 657-660
A major challenge in predicting Earth's future climate state is to understand feedbacks that alter greenhouse-gas forcing. Here we synthesize field data from arctic Alaska, showing that terrestrial changes in summer albedo contribute substantially to recent high-latitude warming trends. Pronounced terrestrial summer warming in arctic Alaska correlates with a lengthening...
Evaluation of wolf density estimation from radiotelemetry data
John W. Burch, Layne G. Adams, Erich H. Follmann, Eric A. Rexstad
2005, Wildlife Society Bulletin (33) 1225-1236
Density estimation of wolves (Canis lupus) requires a count of individuals and an estimate of the area those individuals inhabit. With radiomarked wolves, the count is straightforward but estimation of the area is more difficult and often given inadequate attention. The population area, based on the mosaic of pack territories,...
Subduction erosion of the Jurassic Talkeetna-Bonanza arc and the Mesozoic accretionary tectonics of western North America
P.D. Clift, T. Pavlis, S.M. DeBari, A.E. Draut, M. Rioux, P.B. Kelemen
2005, Geology (33) 881-884
The Jurassic Talkeetna volcanic arc of south-central Alaska is an oceanic island arc that formed far from the North American margin. Geochronological, geochemical, and structural data indicate that the arc formed above a north-dipping subduction zone after ca. 201 Ma. Magmatism migrated northward into the region of the Talkeetna Mountains...
Evolving force balance at Columbia Glacier, Alaska, during its rapid retreat
Shad O’Neel, W.T. Pfeffer, R. Krimmel, M. Meier
2005, Journal of Geophysical Research F: Earth Surface (110)
Changes in driving and resistive stresses play an essential role in governing the buoyancy forces that are important controls on the speed and irreversibility of tidewater glacier retreats. We describe changes in geometry, velocity, and strain rate and present a top-down force balance analysis performed over the lower reach of...
Habitat selection models for Pacific sand lance (Ammodytes hexapterus) in Prince William Sound, Alaska
William D. Ostrand, Tracey A. Gotthardt, Shay Howlin, Martin D. Robards
2005, Northwestern Naturalist (86) 131-143
We modeled habitat selection by Pacific sand lance (Ammodytes hexapterus) by examining their distribution in relation to water depth, distance to shore, bottom slope, bottom type, distance from sand bottom, and shoreline type. Through both logistic regression and classification tree models, we compared the characteristics of 29 known sand lance...
Parallel structure among environmental gradients and three trophic levels in a subarctic estuary
Suzann G. Speckman, John F. Piatt, C. V. Minte-Vera, Julia K. Parrish
2005, Progress in Oceanography (66) 25-65
We assessed spatial and temporal variability in the physical environment of a subarctic estuary, and examined concurrent patterns of chlorophyll α abundance (fluorescence), and zooplankton and forage fish community structure. Surveys were conducted in lower Cook Inlet, Alaska, during late July and early August from 1997 through 1999. Principle components analysis...
The challenges associated with developing science-based landscape scale management plans
Robert C. Szaro, D.A. Boyce Jr., T. Puchlerz
2005, Landscape and Urban Planning (72) 3-12
Planning activities over large landscapes poses a complex of challenges when trying to balance the implementation of a conservation strategy while still allowing for a variety of consumptive and nonconsumptive uses. We examine a case in southeast Alaska to illustrate the breadth of these challenges and an approach to developing...
Examples
Trent L. McDonald, Steven C. Amstrup, Eric V. Regehr, Bryan F.J. Manly
Steven C. Amstrup, Trent L. McDonald, Bryan F.J. Manly, editor(s)
2005, Book chapter, Handbook of capture-recapture analysis
No abstract available....
Introduction to the handbook
Bryan F.J. Manly, Trent L. McDonald, Steven C. Amstrup
Steven C. Amstrup, Trent L. McDonald, Bryan F.J. Manly, editor(s)
2005, Book chapter, Handbook of capture-recapture analysis
In September of 1802, Pierre Simon Laplace (1749–1827) used a capture– recapture type of approach to estimate the size of the human population of France (Cochran 1978; Stigler 1986). At that time, live births were recorded for all of France on an annual basis. In the year prior to September...
Individual variation in staging and timing of spring migration of Pacific common eiders in Alaska
Margaret R. Petersen
2005, Conference Paper, Second North America Sea Duck Conference
Timing of migration and characterization of migration patterns of birds are usually based on dates of peak migration to and from staging, wintering, and breeding areas used by the bulk of a species. For Pacific common eiders (Somateria mollissima v-nigrum), as well as other species, the timing of migration into...
Impact of millennial-scale Holocene climate variability on eastern North American terrestrial ecosystems: Pollen-based climatic reconstruction
Debra A. Willard, C.E. Bernhardt, D.A. Korejwo, S.R. Meyers
2005, Global and Planetary Change (47) 17-35
We present paleoclimatic evidence for a series of Holocene millennial-scale cool intervals in eastern North America that occurred every ???1400 years and lasted ???300-500 years, based on pollen data from Chesapeake Bay in the mid-Atlantic region of the United States. The cool events are indicated by significant decreases in pine...
Analysis of vegetation distribution in Interior Alaska and sensitivity to climate change using a logistic regression approach
M.P. Calef, A. D. McGuire, H.E. Epstein, T.S. Rupp, H.H. Shugart
2005, Journal of Biogeography (32) 863-878
Aim: To understand drivers of vegetation type distribution and sensitivity to climate change. Location: Interior Alaska. Methods: A logistic regression model was developed that predicts the potential equilibrium distribution of four major vegetation types: tundra, deciduous forest, black spruce forest and white spruce forest based on elevation, aspect, slope, drainage...
Transient rheology of the upper mantle beneath central Alaska inferred from the crustal velocity field following the 2002 Denali earthquake
F. F. Pollitz
2005, Journal of Geophysical Research B: Solid Earth (110) 1-16
The M7.9 2002 Denali earthquake, Alaska, is one of the largest strike-slip earthquakes ever recorded. The postseismic GPS velocity field around the 300-km-long rupture is characterized by very rapid horizontal velocity up to ???300 mm/yr for the first 0.1 years and slower but still elevated horizontal velocity up to ???100...
Physiological response of wild rainbow trout to angling: Impact of angling duration, fish size, body condition, and temperature
Julie M. Meka, S. D. McCormick
2005, Fisheries Research (72) 311-322
This study evaluated the immediate physiological response of wild rainbow trout to catch-and-release angling in the Alagnak River, southwest Alaska. Information was recorded on individual rainbow trout (n = 415) captured by angling including landing time and the time required to remove hooks (angling duration), the time to anesthetize fish...
Identifying spawning behavior in Pacific halibut (Hippoglossus stenolepis) using electronic tags
A.C. Seitz, Brenda L. Norcross, D. Wilson, J.L. Nielsen
2005, Environmental Biology of Fishes (73) 445-451
Identifying spawning behavior in Pacific halibut, Hippoglossus stenolepis, is particularly challenging because they occupy a deep, remote environment during the spawning season. To identify spawning events, a method is needed in which direct observation by humans is not employed. Spawning behavior of seven other flatfish, species has been directly observed...
Comparing maps of mean monthly surface temperature and precipitation for Alaska and adjacent areas of Canada produced by two different methods
James J. Simpson, Gary L. Hufford, Christopher Daly, Jared S. Berg, Michael D. Fleming
2005, Arctic (58) 137-161
Maps of mean monthly surface temperature and precipitation for Alaska and adjacent areas of Canada, produced by Oregon State University's Spatial Climate Analysis Service (SCAS) and the Alaska Geospatial Data Clearinghouse (AGDC), were analyzed. Because both sets of maps are generally available and in use by the community, there is...
Central Arctic caribou and petroleum development: Distributional, nutritional, and reproductive implications
Raymond D. Cameron, Walter T. Smith, Robert G. White, Brad Griffith
2005, Arctic (58) 1-9
We synthesize findings from cooperative research on effects of petroleum development on caribou (Rangifer tarandus granti) of the Central Arctic Herd (CAH). The CAH increased from about 6000 animals in 1978 to 23000 in 1992, declined to 18 000 by 1995, and again increased to 27 000 by 2000. Net...
Population genetic structure of annual and perennial populations of Zostera marina L. along the Pacific coast of Baja California and the Gulf of California
Raquel Muñiz-Salazar, Sandra L. Talbot, George K. Sage, David H. Ward, Alejandro Cabello-Pasini
2005, Molecular Ecology (14) 711-722
The Baja California peninsula represents a biogeographical boundary contributing to regional differentiation among populations of marine animals. We investigated the genetic characteristics of perennial and annual populations of the marine angiosperm, Zostera marina, along the Pacific coast of Baja California and in the Gulf of California, respectively. Populations of Z....
Discovery of 100-160-year-old iceberg gouges and their relation to halibut habitat in Glacier Bay, Alaska
P.R. Carlson, P.N. Hooge, G.R. Cochrane
2005, American Fisheries Society Symposium (41) 235-243
Side-scan sonar and multibeam imagery of Glacier Bay, Alaska, revealed complex iceberg gouge patterns at water depths to 135 m on the floor of Whidbey Passage and south to the bay entrance. These previously undiscovered gouges likely formed more than 100 years ago as the glacier retreated rapidly up Glacier...
Allocating harvests among polar bear stocks in the Beaufort Sea
Steven C. Amstrup, George M. Durner, I. Stirling, T. L. McDonald
2005, Arctic (58) 247-259
Recognition that polar bears are shared by hunters in Canada and Alaska prompted development of the “Polar Bear Management Agreement for the Southern Beaufort Sea.” Under this Agreement, the harvest of polar bears from the southern Beaufort Sea (SBS) is shared between Inupiat hunters of Alaska and Inuvialuit hunters of...
Variations in the Arctic's multiyear sea ice cover: A neural network analysis of SMMR-SSM/I data, 1979-2004
G. I. Belchansky, David C. Douglas, V.A. Eremeev, Nikita G. Platonov
2005, Geophysical Research Letters (32) 1-4
A 26-year (1979-2004) observational record of January multiyear sea ice distributions, derived from neural network analysis of SMMR-SSM/I passive microwave satellite data, reveals dense and persistent cover in the central Arctic basin surrounded by expansive regions of highly fluctuating interannual cover. Following a decade of quasi equilibrium, precipitous declines in...
Oceanographic conditions structure forage fishes into lipid-rich and lipid-poor communities in lower Cook Inlet, Alaska, USA
Alisa A. Abookire, John F. Piatt
2005, Marine Ecology Progress Series (287) 229-240
Forage fishes were sampled with a mid-water trawl in lower Cook Inlet, Alaska, USA, from late July to early August 1996 to 1999. We sampled 3 oceanographically distinct areas of lower Cook Inlet: waters adjacent to Chisik Island, in Kachemak Bay, and near the Barren Islands. In 163 tows using...
Population size and trend of Yellow-billed Loons in northern Alaska
Susan L. Earnst, Robert A Stehn, Robert Platte, William W. Larned, Edward J. Mallek
2005, Condor (107) 289-304
The Yellow-billed Loon (Gavia adamsii) is of conservation concern due to its restricted range, small population size, specific habitat requirements, and perceived threats to its breeding and wintering habitat. Within the U.S., this species breeds almost entirely within the National Petroleum Reserve-Alaska, nearly all of which is open, or proposed...
