Winter habitat use by female caribou in relation to wildland fires in interior Alaska
Kyle Joly, Bruce W. Dale, William B. Collins, Layne G. Adams
2003, Canadian Journal of Zoology (81) 1192-1201
The role of wildland fire in the winter habitat use of caribou (Rangifer tarandus) has long been debated. Fire has been viewed as detrimental to caribou because it destroys the slow-growing climax forage lichens that caribou utilize in winter. Other researchers argued that caribou were not reliant on lichens and...
Geographic information systems and spatial analysis of adult Ixodes scapularis (Acari: Ixodidae) in the Middle Atlantic region of the U.S.A
J.E. Bunnell, S. D. Price, A. Das, T.M. Shields, G.E. Glass
2003, Journal of Medical Entomology (40) 570-576
In the Middle Atlantic region of the U.S.A., the vector of Lyme disease, human granulocytic ehrlichiosis, babesiosis, and other human and veterinary pathogens is the black-legged tick, Ixodes scapularis Say. In 1997 and 1998, 663 adult I. scapularis ticks were collected from 320 transects spanning 66,400 km2 in five states...
Comparison of P- and S-wave velocity profiles obtained from surface seismic refraction/reflection and downhole data
R. A. Williams, W. J. Stephenson, J. K. Odum
2003, Tectonophysics (368) 71-88
High-resolution seismic-reflection/refraction data were acquired on the ground surface at six locations to compare with near-surface seismic-velocity downhole measurements. Measurement sites were in Seattle, WA, the San Francisco Bay Area, CA, and the San Fernando Valley, CA. We quantitatively compared the data in terms of the average shear-wave velocity to...
Structural framework of a major intracontinental orogenic termination zone: The easternmost Tien Shan, China
D. Cunningham, L.A. Owen, L.W. Snee, Ji Li
2003, Journal of the Geological Society (160) 575-590
The Barkol Tagh and Karlik Tagh ranges of the easternmost Tien Shan are a natural laboratory for studying the fault architecture of an active termination zone of a major intracontinental mountain range. Barkol and Karlik Tagh and lesser ranges to the north are bounded by active thrust faults that locally...
Invertebrate response to snow goose herbivory on moist-soil vegetation
M. H. Sherfy, R. L. Kirkpatrick
2003, Wetlands (23) 236-249
Foraging activity by snow geese (Chen caerulescens) often creates large areas devoid of vegetation ("eat-outs") in moist-soil impoundments and coastal wetlands. Open-water habitats that result from eat-outs may be valuable foraging areas for other wetland-dependent birds (i.e., waterfowl and shorebirds). However, few studies have examined the effects of goose-induced habitat...
Research highlight: fire and invasive annual grasses in western ecosystems
M.L. Brooks
2003, Report
No abstract available at this time...
Wolf population dynamics
Todd K. Fuller, L. David Mech, Jean Fitts Cochrane
L. David Mech, Luigi Boitani, editor(s)
2003, Book chapter, Wolves: Behavior, ecology, and conservation
A large, dark wolf poked his nose out of the pines in Yellowstone National Park as he thrust a broad foot deep into the snow and plowed ahead. Soon a second animal appeared, then another, and a fourth. A few minutes later, a pack of thirteen lanky wolves had filed...
Southwestern willow flycatcher breeding site and territory summary - 2002
M. Sogge, P. Dockens, S. O Williams III, B. Kus, S. Sferra
2003, Report
No abstract available at this time...
Mortality of adult Joshua trees (Yucca brevifolia) due to small mammal herbivory at Joshua Tree National Park, California
T. C. Esque, D.F. Haines, L.A. DeFalco, J.E. Rodgers, K.A. Goodwin, S.J. Scoles
2003, Report
No abstract available at this time...
Responses of small terrestrial vertebrates to roads in a coastal sage scrub ecosystem
C.S. Brehme
2003, Thesis
No abstract available at this time...
Multiple pathways for woody plant establishment on floodplains at local to regional scales
D.J. Cooper, D.C. Andersen, Rodney A. Chimner
2003, Journal of Ecology (91) 182-196
1. The structure and functioning of riverine ecosystems is dependent upon regional setting and the interplay of hydrologic regime and geomorphologic processes. We used a retrospective analysis to study recruitment along broad, alluvial valley segments (parks) and canyon segments of the unregulated Yampa River and the regulated Green River in...
Variation in reproduction of the desert tortoise (Gopherus agassizii) in the Mojave Desert of southern Nevada in relation to body size, primary production and climate
K.A. Goodwin, T. C. Esque, P.A. Medica, M.B. Saethre, R.W. Marlow, C.R. Tracy
2003, Report
No abstract available at this time...
Grassland bird communities and environmental health: the role of landscape features
Douglas H. Johnson, S.F. Browder, M. Winter
D.J. Rapport, et al., editor(s)
2003, Book chapter, Managing for healthy ecosystems
Tracking spring migration of northern pintails with satellite telemetry
M. R. Miller, John Y. Takekawa, D.L. Orthmeyer, J. P. Fleskes, Michael L. Casazza, M.W. Perry
2003, Report
No abstract available at this time...
Ecosystem effects on wolves
L.D. Mech, L. Boitani
L.D. Mech, L. Boitani, editor(s)
2003, Book chapter, Wolves: Behavior, Ecology, and Conservation
Montioring Giant Garter Snakes at Colusa National Wildlife Refuge: 2002 Progress Report
Glenn D. Wylie, Michael L. Casazza, Lisa L. Martin
2003, Report
No abstract available at this time...
The revegetation of disturbed areas associated with roads at Lake Mead National Recreation Area, Nevada
S.J. Scoles, L.A. DeFalco
2003, Report
No abstract available at this time...
Habitat characteristics associated with abundance of band-tailed pigeons and use of mineral sites in the Pacific Northwest
C.T. Overton
2003, Thesis
No abstract available at this time...
Evaluating options for revegetation following a catastrophic fire in a pinyon-juniper community at Grand Canyon/Parashant National Monument, Arizona
S.J. Scoles, T. C. Esque, L.A. DeFalco, S.E. Eckert, D.F. Haines
2003, Report
No abstract available at this time...
Fire behavior during a prescribed experimental fire in desert tortoise habitat on the Parashant National Monument in Pakoon Basin, Arizona
T. C. Esque, S.E. Eckert, D.F. Haines, R.S. Schwartz, C.R. Tracy
2003, Report
No abstract available at this time...
Fuels and fire regimes in creosostebush, blackbrush, and interior chaparral shrublands
M.L. Brooks, T. C. Esque, T. Duck
2003, Report
No abstract available at this time...
Surveys for the Least Bell's Vireo and Southwestern Willow Flycatcher at the San Luis Rey River. 2002 Annual Summary
B.L. Peterson, B.E. Kus, M.J. Wellik
2003, Report
No abstract available at this time...
Physiological ecology of the invasive annual grass Bromus madritensis ssp. Rubens and its interactions with native Mojave Desert species
L.A. DeFalco
2003, Thesis
No abstract available at this time...
New and unique U.S. magnetic database is forthcoming
T. Hildenbrand, W. Hinze, Keller G. Randy, V. Labson, W. Roest
2003, Leading Edge (Tulsa, OK) (22) 50-51
An exciting and cost-effective opportunity to acquire a new U.S. magnetic anomaly database exists in calendar year 2004. High Altitude Mapping Missions Incorporated (HAMM) is currently planning an airborne mission to collect high-resolution Interferometric Synthetic Aperture Radar (IFSAR) imagery at an altitude of about 15 km, with a flight-line spacing...
Sustaining healthy freshwater ecosystems
Jill Baron, N.L. Poff, P. L. Angermeier, Clifford N. Dahm, P.H. Gleick, N.G. Hairston Jr., R.B. Jackson, C.A. Johnston, B. D. Richter, A.D. Steinman
2003, Issues in Ecology (10) 1-16
No abstract available....
