Publications
Below is a list of available NOROCK peer reviewed and published science. If you are in search of a specific publication and cannot find it below or through a search, please contact twojtowicz@usgs.gov.
Filter Total Items: 1220
Effects of the wildfire on growth of cutthroat trout in Yellowstone Lake
This chapter discusses the effects of wildfire on the growth of cutthroat trout in Yellowstone Lake. Trends in year-to-year variation in growth for individual age groups and 25 mm length groups of cutthroat trout in Yellowstone Lake were examined in an attempt to detect shifts in growth patterns associated with the fires. Approximately 100,000 ha of the Yellowstone Lake watershed burned between ea
Authors
R. E. Gresswell
Integrated monitoring of hydrogeomorphic, vegetative, and edaphic conditions in riparian ecosystems of Great Basin National Park, Nevada
In semiarid regions such as the Great Basin, riparian areas function as oases of cooler and more stable microclimates, greater relative humidity, greater structural complexity, and a steady flow of water and nutrients relative to upland areas. These qualities make riparian areaʼs attractive not only to resident and migratory wildlife, but also to visitors in recreation areas such as Great Basin Na
Authors
Erik A. Beever, D.A. Pyke
A tree-ring based reconstruction of the Atlantic Multidecadal Oscillation since 1567 A.D
We present a tree-ring based reconstruction of the Atlantic Multidecadal Oscillation (AMO) which demonstrates that strong, low-frequency (60-100 yr) variability in basin-wide (0-70??N) sea surface temperatures (SSTs) has been a consistent feature of North Atlantic climate for the past five centuries. Intervention analysis of reconstructed AMO indicates that 20th century modes were similar to those
Authors
S.T. Gray, L.J. Graumlich, J.L. Betancourt, G.T. Pederson
Decadal-scale climate drivers for glacial dynamics in Glacier National Park, Montana, USA
Little Ice Age (14th-19th centuries A.D.) glacial maxima and 20th century retreat have been well documented in Glacier National Park, Montana, USA. However, the influence of regional and Pacific Basin driven climate variability on these events is poorly understood. We use tree-ring reconstructions of North Pacific surface temperature anomalies and summer drought as proxies for winter glacial accum
Authors
G.T. Pederson, D.B. Fagre, S.T. Gray, L.J. Graumlich
Carnivore re-colonisation: Reality, possibility and a non-equilibrium century for grizzly bears in the southern Yellowstone ecosystem
Most large native carnivores have experienced range contractions due to conflicts with humans, although neither rates of spatial collapse nor expansion have been well characterised. In North America, the grizzly bear (Ursus arctos) once ranged from Mexico northward to Alaska, however its range in the continental USA has been reduced by 95-98%. Under the U. S. Endangered Species Act, the Yellowston
Authors
Sanjay Pyare, S. Cain, D. Moody, C. Schwartz, J. Berger
Gray wolves in and adjacent to Voyageurs National Park, Minnesota: Research and synthesis 1987-1991
No abstract available.
Authors
P.J.P. Gogan, W.T. Route, E.M. Olexa, N. Thomas, D. Kuehn, K.M. Podruzny
Community- and landscape-level responses of reptiles and small mammals to feral-horse grazing in the Great Basin
We investigated species- and community-level responses of squamate reptiles and granivorous small mammals to feral-horse grazing in two elevational strata across nine mountain ranges of the western Great Basin, USA. Although mammal species richness did not differ between horse-occupied and horse-removed sites, occupied sites possessed less community completeness (biotic integrity) and 1.1–7.4 time
Authors
Erik A. Beever, P. F. Brussard
Postfire management in forested public lands of the western USA
Forest ecosystems in the western United States evolved over many millennia in response to disturbances such as wildfires. Land use and management practices have altered these ecosystems, however, including fire regimes in some areas. Forest ecosystems are especially vulnerable to postfire management practices because such practices may influence forest dynamics and aquatic systems for decades to c
Authors
R. L. Beschta, J.J. Rhodes, J.B. Kauffman, Robert E. Gresswell, G.W. Minshall, C.A. Frissell, D.A. Perry, R. Hauer
Spatial and temporal patterns of debris flow deposition in the Oregon Coast Range, USA
Patterns of debris-flow occurrence were investigated in 125 headwater basins in the Oregon Coast Range. Time since the previous debris-flows was established using dendrochronology, and recurrence interval estimates ranged from 98 to 357 years. Tributary basins with larger drainage areas had a greater abundance of potential landslide source areas and a greater frequency of scouring events compared
Authors
Christine L. May, Robert E. Gresswell
Variable breeding phenology affects the exposure of amphibian embryos to ultraviolet radiation: Reply
Corn and Muths (2002) describe how seasonal and annual variation in estimated flux of ultraviolet-B (UV-B) radiation, combined with year-to-year variation in amphibian breeding, phenology, introduces considerable variability in the UV-B exposures to amphibians. The response to our paper by Blaustein et al. (2004) misstates the objective and conclusions of our study, contains other errors of interp
Authors
Paul Stephen Corn, Erin Muths
Science for the changing Great Basin
The U.S. Geological Survey (USGS), with its multidisciplinary structure and role as a federal science organization, is well suited to provide integrated science in the Great Basin of the western United States. A research strategy developed by the USGS and collaborating partners addresses critical management issues in the basin, including invasive species, status and trends of wildlife populations
Authors
Erik Beever, David A. Pyke