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: 3099
Implications of climate change for Alaska's seabirds Implications of climate change for Alaska's seabirds
Seabirds are prominent and highly visible components of marine ecosystems that will be affected by global climate change. The Bering Sea region is particularly important to seabirds; populations there are larger and more diverse than in any similar region in North America—over 90% of seabirds breeding in the continental United States are found in this region. Seabirds, so named because...
Authors
Rosa Meehan, G. Vernon Byrd, George J. Divoky, John F. Piatt
Microsatellite analyses of Alameda Creek Rainbow/Steelhead trout Microsatellite analyses of Alameda Creek Rainbow/Steelhead trout
Microsatellite genetic diversity found in Alameda Creek rainbow trout support a close genetic relationship with coastal trout found in Lagunitas Creek, Marin County, California. No significant genotypic or allelic frequencies associations could be drawn among Alameda Creek trout and fish collected from the four primary rainbow trout hatchery strains in use in California, Whitney, Mount...
Authors
Jennifer L. Nielsen, Monique C. Fountain
Setting the stage for a sustainable Pacific salmon fisheries strategy Setting the stage for a sustainable Pacific salmon fisheries strategy
Salmon and steelhead Oncorhynchus spp., have been keystone species for ecosystems and human cultures of the North American Pacific coast for cons. Yet, in the past century, many populations have been greatly diminished and some are now extinct-the result of a combination of factors, including habitat loss and degradation, overfishing, natural variability in salmon production, negative...
Authors
Donald D. MacDonald, Cleveland R. Steward, E. Eric Knudsen
Measurements of Taku River, Alaska during Tulsequah Lake outburst floods Measurements of Taku River, Alaska during Tulsequah Lake outburst floods
No abstract available.
Authors
Randy H. Host, Joseph M. Dorava
Hydrology, geomorphology, and flood profiles of the Mendenhall River, Juneau, Alaska Hydrology, geomorphology, and flood profiles of the Mendenhall River, Juneau, Alaska
Water-surface-profile elevations for the 2-, 20-, 25-, 50-, and 100-year floods were computed for the Mendenhall River near Juneau, Alaska, using the U.S. Army Corps of Engineers Hydrologic Engineering Center River Analysis System model. The peak discharges for the selected recurrence intervals were determined using the standard log-Pearson type III method. Channel cross sections were...
Authors
Edward G. Neal, Randy H. Host
Alaska resource data file: Livengood quadrangle Alaska resource data file: Livengood quadrangle
No abstract available.
Authors
C. J. Freeman, Janet Schaefer
Incubation behavior of Spectacled Eiders on the Yukon-Kuskokwim Delta, Alaska Incubation behavior of Spectacled Eiders on the Yukon-Kuskokwim Delta, Alaska
We studied incubation behavior of Spectacled Eiders (Somateria fischeri) on the Yukon-Kuskokwim Delta in 1996. We trapped 19 females on their nests and weighed them in early incubation and again at hatch. Average daily weight loss for incubating females was 16.6 ± 1.0 g day-1, which resulted in a cumulative loss of 26% of body weight throughout incubation. Nest attendance was monitored...
Authors
Paul L. Flint, J.B. Grand
Data for periphyton and water samples collected from the south Florida ecosystem, 1995 and 1996 Data for periphyton and water samples collected from the south Florida ecosystem, 1995 and 1996
This report presents data for samples of periphyton and water collected in 1995 and 1996 from Water Conservation Areas, the Big Cypress National Preserve, and the Everglades National Park in south Florida. Periphyton samples were analyzed for concentrations of total mercury, methylmercury, nitrogen, phosphorus, organic carbon, and inorganic carbon . Water-column samples collected on the...
Authors
N.S. Simon, T. Cox, R. Spencer
Eskimo Curlew (Numenius borealis) Eskimo Curlew (Numenius borealis)
No abstract available
Authors
Robert E. Gill, Pablo Canevari, Eve H. Iversen
Greater Yellowlegs (Tringa melanoleuca) Greater Yellowlegs (Tringa melanoleuca)
No abstract available
Authors
C.S. Elphick, T. Lee Tibbitts
Leucocytozoon simondi in Emperor Geese from the Yukon-Kuskokwim Delta in Alaska Leucocytozoon simondi in Emperor Geese from the Yukon-Kuskokwim Delta in Alaska
We surveyed Emperor Geese (Chen canagica) in western Alaska for avian hematozoa. Blood smears were collected from 134 adults and goslings in late July 1996, on their breeding grounds on the Yukon-Kuskokwim Delta. One of 134 (0.7%) Emperor Geese harbored Leucocytozoon simondi, representing a new host record for this parasite. No other hematozoa were detected. This is one of few reports of...
Authors
Tuula E. Hollmen, J. Christian Franson, Lynn H. Creekmore, Joel A. Schmutz, Ada C. Fowler
Townsend's Warbler (Setophaga townsendi) Townsend's Warbler (Setophaga townsendi)
No abstract available
Authors
A.L. Wright, G.D. Hayward, Steven M. Matsuoka, P.H. Hayward