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: 3105
Alaskan brown bears, humans, and habituation Alaskan brown bears, humans, and habituation
We present a new paradigm for understanding habituation and the role it plays in brown bear (Ursus arctos) populations and interactions with humans in Alaska. We assert that 3 forms of habituation occur in Alaska: bear-to-bear, bear-to-human, and human-to-bear. We present data that supports our theory that bear density is an important factor influencing a bear’s overt reaction distance...
Authors
Thomas Smith, Stephen Herrero, Terry D. DeBruyn
Capture-recapture methods in practice Capture-recapture methods in practice
No abstract available.
Authors
Bryan F.J. Manly, Steven C. Amstrup, Trent L. McDonald
Circumpolar variation in morphological characteristics of Greater White-fronted Geese Anser albifrons Circumpolar variation in morphological characteristics of Greater White-fronted Geese Anser albifrons
Capsule: Greater White-fronted Geese show significant variation in body size from sampling locations throughout their circumpolar breeding range. Aims: To determine the degree of geographical variation in body size of Greater White-fronted Geese and identify factors contributing to any apparent patterns in variation. Methods: Structural measures of >3000 geese from 16 breeding areas...
Authors
Craig R. Ely, A.D. Fox, R.T. Alisauskas, A. Andreev, R.G. Bromley, Andrei G. Degtyarev, B. Ebbinge, E.N. Gurtovaya, R. Kerbes, Alexander V. Kondratyev, I. Kostin, A.V. Krechmar, K.E. Litvin, Y. Miyabayashi, J.H. Moou, R.M. Oates, D.L. Orthmeyer, Yutaka Sabano, S. Gay Simpson, D.V. Solovieva, Michael A. Spindler, Y.V. Syroechkovsky, John Y. Takekawa, A. Walsh
Allocating harvests among polar bear stocks in the Beaufort Sea Allocating harvests among polar bear stocks in the Beaufort Sea
Recognition that polar bears are shared by hunters in Canada and Alaska prompted development of the “Polar Bear Management Agreement for the Southern Beaufort Sea.” Under this Agreement, the harvest of polar bears from the southern Beaufort Sea (SBS) is shared between Inupiat hunters of Alaska and Inuvialuit hunters of Canada. Quotas for each jurisdiction are to be reviewed annually in...
Authors
Steven C. Amstrup, George M. Durner, I. Stirling, T. L. McDonald
Water resources data, Alaska, water year 2004 Water resources data, Alaska, water year 2004
Water resources data for the 2004 water year for Alaska consist of records of stage, discharge, and water quality of streams; stages of lakes; and water levels and water quality of ground water. This volume contains records for water discharge at 115 gaging stations; stage or contents only at 3 gaging stations; water quality at 39 gaging stations; and water levels for 26 observation...
Authors
D. F. Meyer, H.R. Best, R.H. Host, R.P. Murray, G. L. Solin
Water quality and ground-water/surface-water interactions along the John River near Anaktuvuk Pass, Alaska, 2002-2003 Water quality and ground-water/surface-water interactions along the John River near Anaktuvuk Pass, Alaska, 2002-2003
The headwaters of the John River are located near the village ofAnaktuvuk Pass in the central Brooks Range of interior Alaska. With the recent construction of a water-supply system and a wastewater-treatment plant, most homes in Anaktuvuk Pass now have modern water and wastewater systems. The effluent from the treatment plant discharges into a settling pond near a tributary of the John...
Authors
Edward H. Moran, Timothy P. Brabets
Annual survival and site fidelity of northern pintails banded on the Yukon-Kuskokwim Delta, Alaska Annual survival and site fidelity of northern pintails banded on the Yukon-Kuskokwim Delta, Alaska
We banded northern pintails (Anas acuta; n = 13,645) at a single site on the Yukon-Kuskokwim Delta (YKD), Alaska, USA, from 1990 to 2001. We used recaptures from our site in combination with hunter recoveries to model annual survival, recovery rates, and fidelity to our capture location. Most recoveries (>90%) occurred in the Pacific Flyway with 64% reported from California's Central...
Authors
Christopher A. Nicolai, Paul L. Flint, Michael L. Wege
Seasonal marine growth of Bristol Bay sockeye salmon (Oncorhynchus nerka) in relation to competition with Asian pink salmon (O. gorbuscho) and the 1977 ocean regime shift Seasonal marine growth of Bristol Bay sockeye salmon (Oncorhynchus nerka) in relation to competition with Asian pink salmon (O. gorbuscho) and the 1977 ocean regime shift
Recent research demonstrated significantly lower growth and survival of Bristol Bay sockeye salmon (Oncorhynchus nerka) during odd-numbered years of their second or third years at sea (1975, 1977, etc.), a trend that was opposite that of Asian pink salmon (O. gorbuscha) abundance. Here we evaluated seasonal growth trends of Kvichak and Egegik river sockeye salmon (Bristol Bay stocks)...
Authors
Gregory T. Ruggerone, Ed Farley, Jennifer L. Nielsen, Peter Hagen
Coastal iron fluxes to surface waters of the NE Pacific: A driver of the marine ecosystem and carbon cycle Coastal iron fluxes to surface waters of the NE Pacific: A driver of the marine ecosystem and carbon cycle
No abstract available.
Authors
John Crusius, J.L. Nielsen
Handbook of capture-recapture analysis Handbook of capture-recapture analysis
Every day, biologists in parkas, raincoats, and rubber boots go into the field to capture and mark a variety of animal species. Back in the office, statisticians create analytical models for the field biologists' data. But many times, representatives of the two professions do not fully understand one another's roles. This book bridges this gap by helping biologists understand state-of...
Emperor Goose Anser canagicus Emperor Goose Anser canagicus
No abstract available.
Authors
Joel A. Schmutz