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: 3097
Common Murre (Uria aalge) attendance patterns at Cape St. Mary's, Newfoundland Common Murre (Uria aalge) attendance patterns at Cape St. Mary's, Newfoundland
Attendance patterns of common murres (Uria aalge) at Cape St. Mary's, Newfoundland, were observed during hatching to post-fledging periods of 1980 to 1984. Six study plots on breeding ledges (ca. 450 birds total) and a "club" on the water were monitored for seasonal fluctuations in numbers attending. Attendance on ledges was similar between years, being relatively stable from hatching...
Authors
John F. Piatt, Ruth L. McLagan
Infectious hematopoietic necrosis virus detected by separation and incubation of cells from salmonid cavity fluid. Infectious hematopoietic necrosis virus detected by separation and incubation of cells from salmonid cavity fluid.
Infectious hematopoietic necrosis (IHN) virus is usually detected by inoculating susceptible cell cultures with cavity ("ovarian") fluid (CF) from spawning females. We identified additional adult carriers of virus in spawning populations of steelhead trout (Salmo gairdneri) and sockeye salmon (Oncorhynchus nerka) by collecting nonerythrocytic cells from CF samples by low-speed...
Authors
D. Mulcahy, W.N. Batts
Potassium-argon age determinations from the Port Moller and Stepovak Bay quadrangles, Alaska Peninsula Potassium-argon age determinations from the Port Moller and Stepovak Bay quadrangles, Alaska Peninsula
No abstract available.
Authors
Gregory D. DuBois, Frederic H. Wilson, Nora B. Shew
An inexpensive device for recording animal behavior An inexpensive device for recording animal behavior
Recording animal behavior is tedious and time consuming when behaviors are recorded on tape and transcribed to data sheets. Data loggers circumvent these problems, but can be prohibitively expensive and may require extensive programming (see Hensler et al. [1986]). I describe an inexpensive, efficient alternative for recording behavioral observations.
Authors
Craig R. Ely
Resurrection Peninsula and Knight Island ophiolites and recent faulting on Montague Island, southern Alaska Resurrection Peninsula and Knight Island ophiolites and recent faulting on Montague Island, southern Alaska
The Resurrection Peninsula forms the east side of Resurrection Bay (Fig. 1). The city of Seward is located at the head of the bay and can be reached from Anchorage by highway (127 mi;204 km). Relief ranges from 1,434 ft (437 m) at the southern end of the peninsula to more than 4,800 ft (1,463 m) 17 mi (28 km) to the north. All rock units composing the informally named Resurrection...
Authors
Steven W. Nelson, Marti L. Miller, Julie A. Dumoulin
Development and evaluation of a system for tracking wildlife by satellite Development and evaluation of a system for tracking wildlife by satellite
No abstract available.
Authors
S.G. Fancy, L.F. Pank, David C. Douglas, Catherine H. Curby, Gerald W. Garner, Steven C. Amstrup, Wayne L. Regelin
Mortalities of kelp-forest fishes associated with large oceanic waves off central California, 1982-1983 Mortalities of kelp-forest fishes associated with large oceanic waves off central California, 1982-1983
Observations of three incidents of the mass mortality of nearshore fishes are reported; each corresponded to periods of high-amplitude, long-period swells during the 1982-1983 El Niño event along the coast of central California. Members of the nearshore kelp forest fish assemblage, primarily of the genus Sebastes, accounted for 96% of the observed mortalities and S. mystinus (blue...
Authors
James L. Bodkin, Glenn R. VanBlaricom, Ronald J. Jameson
Comparison of five techniques for the detection of Renibacterium salmoninarum in adult coho salmon. Comparison of five techniques for the detection of Renibacterium salmoninarum in adult coho salmon.
Samples of kidney, spleen, coelomic fluid, and blood from 56 sexually mature coho salmon Oncorhynchus kisutch were examined for infection by Renibacterium salmoninarum by five methods. The overall prevalence (all sample types combined) of R. salmoninarum in the fish was 100% by the enzyme-linked immunosorbent assay, 86% by the combined results of the direct fluorescent antibody and the...
Authors
R.J. Pascho, D.G. Elliott, R.W. Mallett, D. Mulcahy
Feeding ecology of Alcidae in the eastern North Pacific Ocean Feeding ecology of Alcidae in the eastern North Pacific Ocean
No abstract available.
Authors
K. Vermeer, S.G. Sealy, G.A. Sanger
Trophic levels and trophic relationships of seabirds in the Gulf of Alaska Trophic levels and trophic relationships of seabirds in the Gulf of Alaska
No abstract available.
Authors
G.A. Sanger
Did the 1982-1983 El Niño-Southern Oscillation Affect Seabirds in Alaska? Did the 1982-1983 El Niño-Southern Oscillation Affect Seabirds in Alaska?
The causes and effects of the oceanographic and atmospheric phenomena known as El Nino and the Southern Oscillation (ENSO) have been studied intensively in recent years (Cane 1983, Rasmusson and Wallace 1983, Barber and Chave 1983, Cane and Zebiak 1985). ENSOs occur at semiregular intervals of 3-4 years, and the stronger events have important biological consequences, including reduced...
Authors
Scott A. Hatch
Lower Paleozoic carbonate rocks of the Baird Mountains quadrangle, western Brooks Range, Alaska Lower Paleozoic carbonate rocks of the Baird Mountains quadrangle, western Brooks Range, Alaska
Lower Paleozoic carbonate rocks in the Baird Mountains quadrangle form a relatively thin, chiefly shallow-water succession that has been thrust-faulted and metamorphosed to blueschist and greenschist facies. Although this succession was thought to be mostly Devonian until recently, a large part of it is in fact pre-Silurian in age. Middle and Upper Cambrian rocks - the first confirmed in...
Authors
Julie A. Dumoulin, Anita G. Harris