Reproductive strategies of northern geese: Why wait?
Craig R. Ely, K.S. Bollinger, R.V. Densmore, T.C. Rothe, M.J. Petrula, John Y. Takekawa, D.L. Orthmeyer
2007, The Auk (124) 594-605
Migration and reproductive strategies in waterbirds are tightly linked, with timing of arrival and onset of nesting having important consequences for reproductive success. Whether migratory waterbirds are capital or income breeders is predicated by their spring migration schedule, how long they are on breeding areas before nesting, and how adapted...
Soft-sediment deformation produced by tides in a meizoseismic area, Turnagain Arm, Alaska
S.F. Greb, A.W. Archer
2007, Geology (35) 435-438
Turnagain Arm is a semidiurnal hypertidal estuary in southeastern Alaska with a recorded tidal range of 9 m. Contorted bedding and flow rolls preserved in tidal sediments within the estuary have previously been interpreted as resulting from the Mw 9.2 Great Alaskan earthquake of 1964. Horizons of flow rolls between...
Biomarkers of contaminant exposure in northern pike (Esox lucius) from the Yukon River Basin, Alaska
J.E. Hinck, V. S. Blazer, N. D. Denslow, M.S. Myers, T. S. Gross, D. E. Tillitt
2007, Archives of Environmental Contamination and Toxicology (52) 549-562
As part of a larger investigation, northern pike (n = 158; Esox lucius) were collected from ten sites in the Yukon River Basin (YRB), Alaska, to document biomarkers and their correlations with organochlorine pesticide (total p,p'-DDT, total chlordane, dieldrin, and toxaphene), total polychlorinated biphenyls (PCBs), and elemental contaminant (arsenic, cadmium,...
Optimizing nest survival and female survival: Consequences of nest site selection for Canada Geese
David A. Miller, J.B. Grand, T.F. Fondell, R. Michael Anthony
2007, Condor (109) 769-780
We examined the relationship between attributes of nest sites used by Canada Geese (Branta canadensis) in the Copper River Delta, Alaska, and patterns in nest and female survival. We aimed to determine whether nest site attributes related to nest and female survival differed and whether nest site attributes related to...
Identification of functional corridors with movement characteristics of brown bears on the Kenai Peninsula, Alaska
T.A. Graves, S. Farley, M.I. Goldstein, C. Servheen
2007, Landscape Ecology (22) 765-772
We identified primary habitat and functional corridors across a landscape using Global Positioning System (GPS) collar locations of brown bears (Ursus arctos). After deriving density, speed, and angular deviation of movement, we classified landscape function for a group of animals with a cluster analysis. We described areas with high amounts...
Upper triassic continental margin strata of the central alaska range: Implications for paleogeographic reconstruction
A.B. Till, A. G. Harris, B. R. Wardlaw, M. Mullen
2007, Special Paper of the Geological Society of America (431) 191-205
Remnants of a Late Triassic continental margin and ocean basin are scattered across central and southern Alaska. Little is known about the fundamental nature of the margin because most remnants have not been studied in detail and a protracted period of terrane accretion and margin-parallel translation has disrupted original...
Origin of narrow terranes and adjacent major terranes occurring along the Denali fault in the Eastern and Central Alaska Range, Alaska
W. J. Nokleberg, D.H. Richter
2007, Special Paper of the Geological Society of America 129-154
Several narrow terranes occur along the Denali fault in the Eastern and Central Alaska Range in Southern Alaska. These terranes are the Aurora Peak, Cottonwood Creek, Maclaren, Pingston, and Windy terranes, and a terrane of ultramafic and associated rocks. Exterior to the narrow terranes to the...
Crustal structure of the Alaska Range orogen and Denali fault along the Richardson Highway
M. A. Fisher, L. Pellerin, W. J. Nokleberg, N. A. Ratchkovski, J.M.G. Glen
2007, Special Paper of the Geological Society of America 43-53
A suite of geophysical data obtained along the Richardson Highway crosses the eastern Alaska Range and Denali fault and reveals the crustal structure of the orogen. Strong seismic reflections from within the orogen north of the Denali fault dip as steeply as 25° north and extend...
Metallogeny of the nikolai large igneous province (LIP) in southern alaska and its influence on the mineral potential of the talkeetna mountains
J.M. Schmidt, R.K. Rogers
2007, Special Paper of the Geological Society of America 623-648
Recent geologic mapping has identified areas of extrusive basalts of the Middle to Late Triassic Nikolai Greenstone within the Wrangellia terrane that extend at least 80 km southwest of their previously known extent. Abundant dolerite sills of similar composition intrude Paleozoic and Mesozoic stratigraphy below the Nikolai throughout the central...
Ranking Alaska moose nutrition: Signals to begin liberal antlerless harvests
Rodney D. Boertje, Kalin A. Kellie, C. Tom Seaton, Mark A. Keech, Donald D. Young, Bruce W. Dale, Layne G. Adams, Andrew R. Aderman
2007, Journal of Wildlife Management (71) 1494-1506
We focused on describing low nutritional status in an increasing moose (Alces alces gigas) population with reduced predation in Game Management Unit (GMU) 20A near Fairbanks, Alaska, USA. A skeptical public disallowed liberal antlerless harvests of this moose population until we provided convincing data on low nutritional status. We ranked...
Food availability affects the maternal transfer of androgens and antibodies into eggs of a colonial seabird
J. Gasparini, T. Boulinier, V.A. Gill, D. Gil, Scott A. Hatch, A. Roulin
2007, Journal of Evolutionary Biology (20) 874-880
Mothers can improve the quality of their offspring by increasing the level of certain components in their eggs. To examine whether or not mothers increase deposition of such components in eggs as a function of food availability, we food‐supplemented black‐legged kittiwake females (Rissa tridactyla) before and during egg laying and...
Coralline alga reveals first marine record of subarctic North Pacific climate change
J. Halfar, R. Steneck, B. Schone, G.W.K. Moore, M. Joachimski, A. Kronz, J. Fietzke, James A. Estes
2007, Geophysical Research Letters (34)
While recent changes in subarctic North Pacific climate had dramatic effects on ecosystems and fishery yields, past climate dynamics and teleconnection patterns are poorly understood due to the absence of century-long high-resolution marine records. We present the first 117-year long annually resolved marine climate history from the western Bering Sea/Aleutian...
Glaciers dominate eustatic sea-level rise in the 21st century
Mark Frederick Meier, M.B. Dyurgerov, Ursula K. Rick, William Tad Pfeffer, Suzanne P. Anderson, Andrey F. Glazovsky
2007, Science (317) 1064-1067
Ice loss to the sea currently accounts for virtually all of the sea-level rise that is not attributable to ocean warming, and about 60% of the ice loss is from glaciers and ice caps rather than from the two ice sheets. The contribution of these smaller glaciers has accelerated over...
Exhumation and continental strike-slip fault systems: Introduction
S. M. Roeske, A.B. Till, D.A. Foster, J.C. Sample
2007, Geological Society of America Special Papers vii-x
Metamorphic rocks adjacent to and within strike-slip faultsystems occur in a wide range of tectonic settings. Detailed studies show that for a number of these locales a significant part of the exhumation occurred during strike-slip fault motion, but the specific processes involved are often cryptic. Although some sites share characteristic...
The restricted gemuk group: A triassic to lower cretaceous succession in southwestern Alaska
Marti L. Miller, D. C. Bradley, T. K. Bundtzen, R. B. Blodgett, E.A. Pessagno Jr., R. D. Tucker, A. G. Harris
2007, Special Paper of the Geological Society of America 273-305
New data from an Upper Triassic to Lower Cretaceous deep marine succession-the herein reinstated and restricted Gemuk Group-provide a vital piece of the puzzle for unraveling southwestern Alaska's tectonic history. First defined by Cady et al. in 1955, the Gemuk Group soon became a regional catchall unit that ended up...
Crustal structure of Wrangellia and adjacent terranes inferred from geophysical studies along a transect through the northern Talkeetna Mountains
J.M.G. Glen, J. Schmidt, L. Pellerin, D.K. McPhee, J.M. O’Neill
2007, Special Paper of the Geological Society of America 21-41
Recent investigations of the Talkeetna Mountains in south-central Alaska were undertaken to study the region's framework geophysics and to reinterpret structures and crustal composition. Potential field (gravity and magnetic) and magnetotelluric (MT) data were collected along northwest-trending profiles as part of the U.S. Geological Survey's Talkeetna Mountains transect project. The...
Genetic characterization of Common Eiders breeding in the Yukon-Kuskokwim Delta, Alaska
Sarah A. Sonsthagen, Sandra L. Talbot, Kevin G. McCracken
2007, The Condor (109) 878-893
We assessed population genetic subdivision among four colonies of Common Eiders (Somateria mollissima v-nigrum) breeding in the Yukon-Kuskokwim Delta (YKD), Alaska, using microsatellite genotypes and DNA sequences with differing modes of inheritance. Significant, albeit low, levels of genetic differentiation were observed between mainland populations and Kigigak Island for nuclear intron lamin A...
Depredation of common eider, Somateria mollissima, nests on a central Beaufort Sea barrier island: A case where no one wins
John A. Reed, Deborah L. Lacroix, Paul L. Flint
2007, Canadian Field-Naturalist (121) 308-312
Along the central Beaufort Sea, Pacific Common Eiders (Somateria mollissima v-nigra) nest on unvegetated, barrier islands; often near nesting Glaucous Gulls (Larus hyperboreus). Nest-site choice likely reflects a strategy of predator avoidance: nesting on islands to avoid mammalian predators and near territorial gulls to avoid other avian predators. We observed...
Evaluating the genetic relationships of the Mentasta and Nelchina caribou herds in Southcentral Alaska
2007, Conference Paper, Proceedings of 11th North American Caribou Workshop
No abstract available....
Ovarian follicle dynamics of female Greater Scaup during egg production
Kristen B. Gorman, Paul L. Flint, Daniel Esler, T.D. Williams
2007, Journal of Field Ornithology (78) 64-73
Studies of female waterfowl nutrient reserve use during egg production require a precise understanding of ovarian follicle dynamics to correctly interpret breeding status, and, therefore, derive proper inference. Concerns over numerical declines of North American scaup have increased the need to better understand the role of female condition in reproductive...
Carbon export and cycling by the Yukon, Tanana, and Porcupine rivers, Alaska, 2001-2005
Robert G. Striegl, Mark M. Dornblaser, George R. Aiken, Kimberly P. Wickland, Peter A. Raymond
2007, Water Resources Research (43)
Loads and yields of dissolved and particulate organic and inorganic carbon (DOC, POC, DIC, PIC) were measured and modeled at three locations on the Yukon River (YR) and on the Tanana and Porcupine rivers (TR, PR) in Alaska during 2001–2005. Total YR carbon export averaged 7.8 Tg C yr−1, 30%...
Effect of lipid extraction on analyses of stable carbon and stable nitrogen isotopes in coastal organisms of the Aleutian archipelago
M.A. Ricca, A.K. Miles, R.G. Anthony, X. Deng, S. S. O. Hung
2007, Canadian Journal of Zoology (85) 40-48
We tested whether extracting lipids reduced confounding variation in ??13C and ??15N values by analyzing paired lipid-extracted (LE) and non-lipid-extracted (NLE) samples of bald eagle (Haliaeetus leucocephalus (L., 1766)) whole eggs, muscle tissue from nine seabird and one terrestrial bird species, muscle tissue from four marine fish species, and blue...
Latitudinal variation in population structure of wintering Pacific Black Brant
J.L. Schamber, James S. Sedinger, David H. Ward, K.R. Hagmeier
2007, Journal of Field Ornithology (78) 74-82
Latitudinal variation in population structure during the winter has been reported in many migratory birds, but has been documented in few species of waterfowl. Variation in environmental and social conditions at wintering sites can potentially influence the population dynamics of differential migrants. We examined latitudinal variation in sex and age...
Early marine growth in relation to marine-stage survival rates for Alaska sockeye salmon (Oncorhynchus nerka)
Edward V. Farley Jr., J.M. Murphy, Milo D. Adkison, Lisa B. Eisner, J.H. Helle, J.H. Moss, Jennifer L. Nielsen
2007, Fishery Bulletin (105) 121-130
We tested the hypothesis that larger juvenile sockeye salmon (Oncorhynchus nerka) in Bristol Bay, Alaska, have higher marine-stage survival rates than smaller juvenile salmon. We used scales from returning adults (33 years of data) and trawl samples of juveniles (n= 3572) collected along the eastern Bering Sea shelf during August...
Do females trade copulations for food? An experimental study on kittiwakes (Rissa tridactyla)
Bart Kempenaers, Richard B. Lanctot, V.A. Gill, Scott A. Hatch, M. Valcu
2007, Behavioral Ecology (18) 345-353
Females of many species copulate more frequently than necessary to fertilize their eggs despite the potential costs. Several studies, particularly on socially monogamous birds, have suggested that females obtain immediate material benefits by trading copulations for nutrients or other resources. We experimentally tested this hypothesis by manipulating the food resources...
