A comparison of geochemical exploration techniques and sample media within accretionary continental margins: an example from the Pacific Border Ranges, Southern Alaska, U.S.A.
S. J. Sutley, R.J. Goldfarb, R. M. O’Leary, R. B. Tripp
1990, Journal of Geochemical Exploration (37) 255-275
The Pacific Border Ranges of the southern Alaskan Cordillera are composed of a number of allochthonous tectonostratigraphic terranes. Within these terranes are widespread volcanogenic, massive sulfide deposits in and adjacent to portions of accreted ophiolite complexes, bands and disseminations of chromite...
Stable lead isotopes evidence anthropogenic contamination in Alaskan sea otters
D. R. Smith, S. Niemeyer, J. A. Estes, A.R. Flegal
1990, Environmental Science & Technology (24) 1517-1521
No abstract available....
Incubation rhythm in the Fulmar Fulmarus glacialis: Annual variation and sex roles
Scott A. Hatch
1990, Ibis (132) 515-524
I monitored the incubation schedules of Fulmars Fulmarus glacialis in an Alaskan colony by observing nests where the male and female were of different colour phases. Complete shifts of up to 16 days were recorded; the average shift in mid-incubation was 4–6 days. Mean shift length was inversely correlated with...
Monitoring St. Lawrence Island and Cape Thompson seabird populations
Scott A. Hatch, John F. Piatt, Brian S. Fadely, Bay D. Roberts
1990, Conference Paper, Alaska OCS region third information transfer meeting: Conference proceedings (OCS Study MMS 90-0041)
About 1.8 million seabirds of 12 species breed on St. Lawrence Island (Figure 1) - one of the largest aggregations of breeding seabirds in the subarctic Pacific. Colonies of least and crested auklets alone, totaling 1.5 million birds, contain a substantial proportion (perhaps 20%) of these species’ world populations. Large...
The Hayes tephra deposits, and upper Holocene marker horizon in south-central Alaska
J.R. Riehle, P.M. Bowers, T. A. Ager
1990, Quaternary Research (33) 276-290
The most widespread of all Holocene tephra deposits in the Cook Inlet region of south-central Alaska is a set of deposits from Hayes volcano. Because of their unique phenocryst content-biotite in rare amounts and a high proportion of amphibole to pyroxene-the deposits are readily identifiable at all but the most...
Is the polar bear (Ursus maritimus) a hibernator? Continued studies on opioids and hibernation
David S. Bruce, Nancy K. Darling, Katheleen J. Seeland, Peter R. Oeltgen, Sita P. Nilekani, Steven C. Amstrup
1990, Pharmacology Biochemistry and Behavior (35) 705-711
Polar bear behavior and biochemistry suggest they may have the ability to hibernate year-round, even though this species is not considered to be a true hibernator. This observation, plus the discovery of a hibernation-induced trigger (HIT) in the blood of black bears, prompted the examination of polar bear blood collected...
Components of breeding productivity in a marine bird community: key factors and concordance
Scott A. Hatch, Martha A. Hatch
1990, Canadian Journal of Zoology (68) 1680-1690
We estimated components of annual breeding productivity for eight species of marine birds on the Semidi Islands in the western Gulf of Alaska. Mortality of eggs and young, caused primarily by avian predators, accounted for most of the annual variation in productivity. Failure to produce eggs, clutch size variation, and...
Age and progression of volcanism, Wrangell volcanic field, Alaska
D.H. Richter, James G. Smith, M. A. Lanphere, G. B. Dalrymple, B.L. Reed, Nora B. Shew
1990, Bulletin of Volcanology (53) 29-44
The Wrangell volcanic field covers more than 10 000 km2 in southern Alaska and extends uninterrupted into northwest. Yukon Territory. Lavas in the field exhibit medium-K, calc-alkaline affinities, typical of continental volcanic arcs along convergent plate margins. Eleven major eruptive centers are recognized in the Alaskan part of the field....
Flexible time budgets in breeding Common Murres: Buffers against variable prey availability
A.E. Burger, John F. Piatt
1990, Studies in Avian Biology (14) 71-83
Mortality rates of canvasbacks were estimated from band-recovery records. The annual rate of mortality of immatures during the first year was 77 per cent. Annual mortality rates of adults ranged from 35 to 50 per cent. Mortality rates of females were higher than those of males. Relatively larger numbers of...
Distribution and relative abundance of sea otters in south-central and south-western Alaska before or at the time of the T/V Exxon Valdez oil spill
Anthony R. DeGange, Daniel H. Monson, David B. Irons, C.M. Robbins, David C. Douglas
Keith Bayha, Jennifer Kormendy, editor(s)
1990, Biological Report 90(12)
Surveys of sea otters (Enhydra lutris) conducted before, immediately after, or at the time of the TA^ Exxon Valdez oil spill were used to guide otter capture efforts and assess the immediate effects of the spill. Shoreline counts (by boat) of sea otters in Prince William Sound in 1984 suggested...
Evidence against a late Wisconsinan ice shelf in the Gulf of Maine
R. N. Oldale, R.S. Williams Jr., Steven M. Colman
1990, Quaternary Science Reviews (9) 1-13
Proposals for the formation of a late Wisconsinan ice shelf in the Gulf of Maine during the retreat of the Laurentide Ice Sheet are considered to be inappropriate. An Antarctic-type ice shelf does not fit the field data that indicate temperate glacial, terrestrial, and marine climates for the region between...
Colony attendance and population monitoring of Least and Crested auklets on St. Lawrence Island, Alaska
John F. Piatt, Bay D. Roberts, Scott A. Hatch
1990, The Condor (92) 97-106
Diurnal and seasonal patterns of attendance of Least Auklets (Aethia pusilla) and Crested Auklets (A. cristatella) were studied in 1987 at breeding colonies on St. Lawrence Island, Alaska. Numbers of auklets attending eight 200-m2 plots on talus slopes were counted throughout the day by observers on 11 occasions through the...
Individual variation in behavior and breeding success of Northern Fulmars
Scott A. Hatch
1990, The Auk (107) 750-755
In a sample of breeding Northern Fulmars (Fulmarus glacialis) observed in 4-5 years, up to 43% of the variability in 13 attributes of breeding behavior was consistent among individuals or pairs. Sample means for most attributes were correlated in a predictable way with annual levels of breeding success. Except for...
Postrelease monitoring of radio-instrumented sea otters in Prince William Sound
C. Monnett, L.M. Rotterman, C. Stack, Daniel H. Monson
Keith Bayha, Jennifer Kormendy, editor(s)
1990, Biological Report 90(12)
Sea otters (Enhydra lutris) that were captured in western Prince William Sound (PWS) or the Gulf of Alaska, treated, and held in captivity at the temporary rehabilitation centers established in response to the T/V Exxon Valdez oil spill were instrumented with radio transmitters, released into eastern PWS, and monitored by...
Effects of visiting black brant nests on egg and nest survival
James S. Sedinger
1990, Journal of Wildlife Management (54) 437-443
I used 2 methods to evaluate the effect of visiting black brant (Branta bernicla nigricans) nests on survival of whole nests and eggs in a single colony on the Yukon-Kuskokwim Delta, Alaska. The first technique regressed survival of nests or eggs during a time interval against interval length. Departure of...
Rhyolitic calderas of the Yukon-Tanana Terrane, east central Alaska: volcanic remnants of a mid-Cretaceous magmatic arc
C. R. Bacon, H.L. Foster, James G. Smith
1990, Journal of Geophysical Research (95) 21451-21461
Four large but poorly exposed rhyolitic calderas are present in the Yukon-Tanana terrane (YTT) in east central Alaska. At least two are mid-Cretaceous in age (~93 Ma). Similar volcanic rocks, the South Fork Volcanics, occur northeast of the Tintina fault in Yukon Territory. Evidence for the calderas consists of thick...
Shorebirds and herring roe in Prince William Sound, Alaska
David W. Norton, Stanley E. Senner, Robert E. Gill Jr., Philip D. Martin, J.M. Wright, Allan K. Fukuyama
1990, American Birds (44) 367-508
No abstract available....
Immediate impact of the 'Exxon Valdez' oil spill on marine birds
John F. Piatt, Calvin J. Lensink, William Butler, Marshal Kendziorek, David R. Nysewander
1990, The Auk (107) 387-397
On 24 March 1989, the oil tanker 'Exxon Valdez' spilled 260,000 barrels of crude oil in Prince William Sound, Alaska. Oil eventually drifted over $30,000\ {\rm km}^{2}$ of coastal and offshore waters occupied by approximately one million marine birds. More than 30,000 dead birds of 90 species were retrieved from...
Seasonal movements of adult female polar bears in the Bering and Chukchi seas
Gerald W. Garner, Steven T. Knick, David C. Douglas
1990, Bears: Their Biology and Management (8) 219-226
Ten adult female polar bears (Ursus maritimus) were fitted with satellite telemetry collars during March 1986 in the Kotzebue Sound area of the Chukchi Sea. During March-April 1987, 2 of these bears were refitted with satellite telemetry collars and an additional 10 adult females were collared in the northern Bering...
Isolation of infectious hematopoietic necrosis virus from a leech (Piscicola salmositica) and a copepod (Salmincola sp.), ectoparasites of sockeye salmon Oncorhynchus nerka
Daniel M. Mulcahy, D. Klaybor, W.N. Batts
1990, Diseases of Aquatic Organisms (8) 29-34
Infectious haematopoietic necrosis (IHN) virus was isolated from freshwater leeches Piscicola salmositica and copepods Salmincola sp. removed from the gills of spawning sockeye salmon, Oncorhynchus nerka. This is the first report of the isolation of IHN virus from an animal other than salmonid fishes. High levels of IHN virus...
Extra-pair copulations in Black Brant
Daniel Welsh, James S. Sedinger
1990, The Condor (92) 242-244
Monogamy is the primary mating system among waterfowl, but extra-pair copulations (EPCs) have been documented in at least 39 species (McKinney et al. 1983). Extra-pair copulations occur in most Holarctic species of dabbling ducks (Anas spp.), but have been recorded in only three species of geese: Lesser Snow Geese, Chen...
The importance of subarctic intertidal habitats to shorebirds: A study of the central Yukon-Kuskokwim Delta, Alaska
Robert E. Gill Jr., Colleen M. Handel
1990, The Condor (92) 709-725
A 6-year study of shorebird use of intertidal habitats of the Yukon-Kuskokwim Delta revealed this area to be one of the premiere sites for shorebirds throughout the Holarctic and worthy of designation as a Hemispheric Shorebird Reserve in the Western Hemisphere Shorebird Reserve Network. The study area, which covered 10%...
Distribution, age, and sex composition of sea otter carcasses recovered during the response to the T/V Exxon Valdez oil spill
Anthony R. DeGange, Calvin J. Lensink
Keith Bayha, Jennifer Kormendy, editor(s)
1990, Biological Report 90(12)
Nearly 900 sea otter (Enhydra lutris) carcasses were recovered in or adjacent to coastal areas affected by the T/V Exxon Valdez oil spill. The time of carcass recovery and the condition of carcasses indicate that most oil spill-induced mortality occurred early in the response period. In fact, by 19 May...
Nest-site selection by Emperor Geese and Cackling Canada Geese
Margaret R. Petersen
1990, The Wilson Bulletin (102) 413-426
Differences were found in habitat structure between nest sites of Emperor Geese (Chen canagicus) and Cackling Canada Geese (Branta canadensis minima) during a 5-year study (1982-1986) at Kokechik Bay, Alaska. Emperor Geese tended to select sites that afforded concealment from avian predators before incubation began. Cackling Canada Geese tended to...
Breeding seasons of oceanic birds in a subarctic colony
Scott A. Hatch, Martha A. Hatch
1990, Canadian Journal of Zoology (68) 1664-1679
We studied the breeding seasons of marine birds on the Semidi Islands, western Gulf of Alaska, from 1976 to 1983. Distributions of laying or hatching observed in 11 species during 1–7 years are presented; less detailed information is available on the breeding schedules of three species. The combined laying period...
