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: 3087
Map and tables showing potassium-argon age determinations and selected major-element chemical analyses from the Circle quadrangle, Alaska Map and tables showing potassium-argon age determinations and selected major-element chemical analyses from the Circle quadrangle, Alaska
No abstract available.
Authors
Gregory D. DuBois, Frederic H. Wilson, Nora B. Shew
Fish assemblages in Macrocystis and Nereocystis kelp forests off Central California Fish assemblages in Macrocystis and Nereocystis kelp forests off Central California
The abundance and species composition of conspicuous fishes were compared within two canopy forming kelp forests (giant kelp, Macrocystis pyrifera, and bull kelp, Nereocystis luetkeana) in Central California. The primary investigative method was a subtidal belt transect, in which visual observation was used. The species composition of fish assemblages in the two canopy types was similar...
Authors
James L. Bodkin
Marine birds Marine birds
In this chapter we review existing knowledge of marine birds in the Gulf of Alaska. Three estuarine systems in the Gulf provide critical habitat for migratory shorebirds and waterfowl: 1) the Stikine River Delta, 2) Cook Inlet, and 3) the Copper River Delta. Over 20 million waterbirds are estimated to use the latter system during spring migration. Western sandpipers, dunlin, and northern...
Authors
Anthony R. DeGange, Gerald A. Sanger
Later Paleozoic and Early Jurassic fossil ages from the McHugh Complex: A section in Geologic studies in Alaska by the U.S. Geological Survey during 1985 Circular 978 Later Paleozoic and Early Jurassic fossil ages from the McHugh Complex: A section in Geologic studies in Alaska by the U.S. Geological Survey during 1985 Circular 978
Late Mississippian through Early Pennsylvanian and Early Jurassic microfossils were collected from the type locality of the McHugh Complex (Clark, 1973) along the Seward Highway southeast of Anchorage (fig. 36). Radiolarians collected indicate that same of the oceanic rocks in the McHugh Complex are Early Jurassic in age. Conodonts extracted from a conglomerate clast are of Late...
Authors
Steven W. Nelson, Charles D. Blome, Anita G. Harris, Katherine M. Reed, Frederic H. Wilson
Geological literature of the Alaska Peninsula to 1985 Geological literature of the Alaska Peninsula to 1985
No abstract available.
Authors
Frederic H. Wilson, S.Z. Gajewski, L.A. Angeloni
Research on polar bears in Alaska, 1983-1985 Research on polar bears in Alaska, 1983-1985
Research on the ecology and status of polar bear populations in Alaska has continued since 1967. Research was a joint U.S. Fish and Wildlife Service/Alaska Department of Fish and Game effort until passage of the Marine Mammal Protection Act in 1972, and has been largely a Federal effort since then. In 1985, Alaskan polar beer research continues to be carried out by the Research Division...
Authors
Steven C. Amstrup
Occurrence of anadromous brown trout in two lower Columbia River tributaries Occurrence of anadromous brown trout in two lower Columbia River tributaries
No abstract available.
Authors
P.A. Bisson, J.L. Nielsen, M.W. Chilcote, B. A. Crawford, S.A. Leider
Potassium-argon ages of volcanic rocks from near Ankara, Central Turkey Potassium-argon ages of volcanic rocks from near Ankara, Central Turkey
No abstract available.
Authors
Jay A. Ach, Frederic H. Wilson
Scale-dependent correlation of seabirds with schooling fish in a coastal ecosystem Scale-dependent correlation of seabirds with schooling fish in a coastal ecosystem
The distribution of piscivorous seabirds relative to schooling fish was investigated by repeated censusing of 2 intersecting transects in the Avalon Channel, which carries the Labrador Current southward along the east coast of Newfoundland. Murres (primarily common murres Uria aalge), Atlantic puffins Fratercula arctica, and schooling fish (primarily capelin Mallotus villosus) were...
Authors
Davod C. Schneider, John F. Piatt
A sublittoral population of Pleurophycus gardneri Setchell and Saunders 1900 (Phaeophyceae: Laminariaceae) in central California A sublittoral population of Pleurophycus gardneri Setchell and Saunders 1900 (Phaeophyceae: Laminariaceae) in central California
Published distributional records for the stipitate kelp Pleurophycus gardneri Setchell and Saunders 1900 (Phaeophyceae: Laminariaceae) indicae a geographic range from Montague Island (59°58’N, 147°22W), Alaska to Fort Bragg (39°27’N, 123°47’W), California (Druehl 1969, 1970; Kjeldsen 1972). P. gardneri is found primarily in rocky intertidal and shallow subtidal locations (Scagel 1967...
Authors
Glenn R. VanBlaricom, Daniel C. Reed, Christopher Harrold, James L. Bodkin
What won't Turnstones eat? What won't Turnstones eat?
The Turnstone Arenaria interpres probably has one of the most varied diets of any wader species. Besides the 'normal' foods taken (see, e.g., Prater 1972, Nettleship 1973, Jones 1975), a considerable variety of 'unusual' foods and feeding behaviours has also been reported. Items taken include soap, gull excrement, dog food, potato peels, cheese, oatmeal, and the flesh of dead animals...
Authors
Robert E. Gill