Defining space use and movements of Canada lynx with global positioning system telemetry
C.L. Burdett, R.A. Moen, G.J. Niemi, L.D. Mech
2007, Journal of Mammalogy (88) 457-467
Space use and movements of Canada lynx (Lynx canadensis) are difficult to study with very-high-frequency radiocollars. We deployed global positioning system (GPS) collars on 11 lynx in Minnesota to study their seasonal space-use patterns. We estimated home ranges with minimum-convex-polygon and fixed-kernel methods and estimated core areas with area/probability curves....
New insights into the history and origin of the southern Maya block, SE Mexico: U-Pb-SHRIMP zircon geochronology from metamorphic rocks of the Chiapas massif
Bodo Weber, Alexander Iriondo, Wayne R. Premo, Lutz Hecht, Peter Schaaf
2007, International Journal of Earth Sciences (96) 253-269
The histories of the pre-Mesozoic landmasses in southern México and their connections with Laurentia, Gondwana, and among themselves are crucial for the understanding of the Late Paleozoic assembly of Pangea. The Permian igneous and metamorphic rocks from the Chiapas massif as part of the southern Maya block, México,...
Progressive oxidation of pyrite in five bituminous coal samples: An As XANES and 57Fe Mössbauer spectroscopic study
Allan Kolker, Frank E. Huggins
2007, Applied Geochemistry (22) 778-787
Naturally occurring pyrite commonly contains minor substituted metals and metalloids (As, Se, Hg, Cu, Ni, etc.) that can be released to the environment as a result of its weathering. Arsenic, often the most abundant minor constituent in pyrite, is a sensitive monitor of progressive pyrite oxidation in coal. To test...
Multiple-species analysis of point count data: A more parsimonious modelling framework
M.W. Alldredge, K. H. Pollock, T.R. Simons, S.A. Shriner
2007, Journal of Applied Ecology (44) 281-290
1. Although population surveys often provide information on multiple species, these data are rarely analysed within a multiple-species framework despite the potential for more efficient estimation of population parameters. 2. We have developed a multiple-species modelling framework that uses similarities in capture/detection processes among species to model multiple species data...
Beyond SaGMRotI: Conversion to SaArb, SaSN, and SaMaxRot
J. A. Watson-Lamprey, D.M. Boore
2007, Bulletin of the Seismological Society of America (97) 1511-1524
In the seismic design of structures, estimates of design forces are usually provided to the engineer in the form of elastic response spectra. Predictive equations for elastic response spectra are derived from empirical recordings of ground motion. The geometric mean of the two orthogonal horizontal components of motion is often...
Rapid sea level rise and ice sheet response to 8,200-year climate event
T. M. Cronin, P.R. Vogt, Debra A. Willard, R. Thunell, J. Halka, M. Berke, J. Pohlman
2007, Geophysical Research Letters (34)
The largest abrupt climatic reversal of the Holocene interglacial, the cooling event 8.6–8.2 thousand years ago (ka), was probably caused by catastrophic release of glacial Lake Agassiz-Ojibway, which slowed Atlantic meridional overturning circulation (AMOC) and cooled global climate. Geophysical surveys and sediment cores from Chesapeake Bay reveal the pattern of...
On using surface-source downhole-receiver logging to determine seismic slownesses
D.M. Boore, E.M. Thompson
2007, Soil Dynamics and Earthquake Engineering (27) 971-985
We present a method to solve for slowness models from surface-source downhole-receiver seismic travel-times. The method estimates the slownesses in a single inversion of the travel-times from all receiver depths and accounts for refractions at layer boundaries. The number and location of layer interfaces in the model can be selected...
Preferences, specialization, and management attitudes of trout anglers fishing in Tennessee tailwaters
C.P. Hutt, P.W. Bettoli
2007, North American Journal of Fisheries Management (27) 1257-1267
Efforts to manage several trout fisheries in Tennessee have been stymied by conflicts between management agencies and angler groups. To assist in preventing such conflicts in the future, we examined attitudes and motivations of trout anglers who fished eight tailwater fisheries in Tennessee during 2001-2002. Using a stratified random sampling...
High-resolution proxy record of Holocene climate from a loess section in Southwestern Nebraska, USA
X. Miao, J.A. Mason, W.C. Johnson, Hongfang Wang
2007, Palaeogeography, Palaeoclimatology, Palaeoecology (245) 368-381
Multi-proxy analysis was used to produce a high-resolution paleoclimatic record from an exceptionally thick section of the Holocene Bignell Loess near Wauneta, Southwestern Nebraska, in the central Great Plains. The Wauneta section has excellent age control, based on optically stimulated luminescence (OSL) and radiocarbon dating, and records multiple episodes of...
Evolving plans for the USA National Phenology Network
J.L. Betancourt, M.D. Schwartz, D.D. Breshears, C.A. Brewer, G. Frazer, J.E. Gross, S.J. Mazer, B. C. Reed, B.E. Wilson
2007, Conference Paper, Eos
[No abstract available]...
Data access and dissemination for emergency response and long-term recovery efforts related to Hurricanes Katrina and Rita
Scott Wilson, Chris Cretini
2007, Circular 1306-4B
The U.S. Geological Survey's (USGS) National Wetlands Research Center (NWRC) responded to Hurricanes Katrina and Rita by providing geospatial support to Federal, State, and local partners. The NWRC used its data and information management systems to deliver aerial photography and maps to emergency responders in a time of critical need....
Topography-based analysis of Hurricane Katrina inundation of New Orleans
Dean Gesch
2007, Circular 1306-3G
The ready availability of high-resolution, high-accuracy elevation data proved valuable for development of topographybased products to determine rough estimates of the inundation of New Orleans, La., from Hurricane Katrina. Because of its high level of spatial detail and vertical accuracy of elevation measurements, light detection and ranging (lidar) remote sensing...
Research on the impacts of past and future hurricanes on the endangered Florida manatee
Catherine A. Langtimm, M. Dennis Krohn, Bradley Stith, James P. Reid, C.A. Beck, Susan M. Butler
2007, Circular 1306-6J
U.S. Geological Survey (USGS) research on Florida manatees (Trichechus manatus latirostris) from 1982 through 1998 identified lower apparent survival rates for adult manatees during years when Hurricane Elena (1985), the March "Storm of the Century"(1993), and Hurricane Opal (1995) hit the northern coast of the Gulf of Mexico. Although our...
USGS Rocky Mountain Geographic Science Center’s 2005 hurricane response and recovery activities
Jill J. Cress, Susan E. Goplen, Jeff L. Sloan, Jennifer L. Stefanacci, Stanley R. Wilds
2007, Circular 1306-4A
Sophisticated monitoring systems and analysis products were key components to emergency response and Federal recovery activities during the 2005 hurricane season. The U.S. Geological Survey's (USGS) Rocky Mountain Geographic Science Center worked with a number of Federal agencies to provide these types of near real-time geospatial monitoring systems and analysis...
Bacteriological water quality in and around Lake Pontchartrain following Hurricanes Katrina and Rita
Dennis K. Demcheck, Donald M. Stoeckel, Rebecca N. Bushon, David S. Blehert, Daniel J. Hippe
2007, Circular 1306-7H
Following the Louisiana landfalls of Katrina on August 29 and Rita on September 24, 2005, the local population and the American public were concerned about the effects the hurricanes might have on water quality in Lake Pontchartrain. The lake is a major recreational resource for the region and an important...
[Book review] Lichens of the north woods: a field guide to 111 northern species, by Joe Walewski
J. Bennett
2007, Evansia (24) 91-92
Review of: LICHENS OF THE NORTH WOODS, A FIELD GUIDE TO 111 NORTHERN SPECIES. Joe Walewski. 2007. North Woods Naturalist Series, Kollath & Stensaas Publishing, Duluth, Minnesota. 152 pp, softcover. ISBN: 0-9673793-50. $18.95....
Mapping impervious surfaces using classification and regression tree algorithm
G. Xian
Q. Weng, editor(s)
2007, Book chapter, Remote sensing of impervious surfaces
No abstract available....
Trends of brominated diphenyl ethers in fresh and archived Great Lakes fish (1979-2005)
Stuart Batterman, Sergei Chernyak, Erica Gwynn, David Cantonwine, Chunrong Jia, Linda J. Begnoche, James P. Hickey
2007, Chemosphere (69) 444-457
While few environmental measurements of brominated diphenyl ethers (BDEs) were completed prior to the mid-1990s, analysis of appropriately archived samples might enable the determination of contaminant trends back to the introduction of these chemicals. In this paper, we first investigate the stability of BDEs in archived frozen and extracted fish...
Functional groups in a single pteridosperm species: Variability and circumscription (Pennsylvanian, Nova Scotia, Canada)
E.L. Zodrow, Maria Mastalerz
2007, International Journal of Coal Geology (70) 313-324
Multiple foliar specimens of the Late Pennsylvanian fossil pteridosperm [gymnosperm] Alethopteris zeilleri (Ragot) Wagner were collected from one restricted stratigraphical horizon in the Canadian Sydney Coalfield. Variability of functional-group distribution using FTIR technique was studied in compressions, adaxial versus abaxial cuticles, and in unseparated cuticles as a function of maceration...
Postseismic relaxation and aftershocks
J.C. Savage, J. L. Svarc, S.-B. Yu
2007, Journal of Geophysical Research B: Solid Earth (112)
[1] Perfettini et al. (2005) suggested that the temporal dependence of surface displacements u(t) measured in the epicentral area following an earthquake is related to N(t), the cumulative number of aftershocks, by the equation u(t) = a + bt + cN(t) + d(1 − e−αt), where a, b, c, d, and α are constants chosen to fit the data and t is the postearthquake...
Large-scale causes of variation in the serpentine vegetation of California
J.B. Grace, H.D. Safford, S. Harrison
2007, Conference Paper, Plant and Soil
Serpentine vegetation in California ranges from forest to shrubland and grassland, harbors many rare and endemic species, and is only moderately altered by invasive exotic species at the present time. To better understand the factors regulating the distribution of common/representative species, endemic/rare species, and the threat of exotics in this...
Diet composition of larval and young-of-year shovelnose sturgeon in the Upper Missouri River
P. J. Braaten, D.B. Fuller, N.D. McClenning
2007, Journal of Applied Ichthyology (23) 516-520
Obtaining food following the transition from endogenous to exogenous feeding and during the first year of life is a critical event that strongly influences growth and survival of young-of-year fishes. For shovelnose sturgeon Scaphirhynchus platorynchus, limited information is available on food habits during the first year of life. The objective of...
Reconstructing sediment age profiles from historical bathymetry changes in San Pablo Bay, California
Shawn A. Higgins, Bruce E. Jaffe, Christopher C. Fuller
2007, Estuarine, Coastal and Shelf Science (73) 165-174
Sediment age profiles reconstructed from a sequence of historical bathymetry changes are used to investigate the subsurface distribution of historical sediments in a subembayment of the San Francisco Estuary. Profiles are created in a grid-based GIS modeling program that stratifies historical...
Molecular systematics of Serrasalmidae: Deciphering the identities of piranha species and unraveling their evolutionary histories
B. Freeman, L.G. Nico, M. Osentoski, H.L. Jelks, T.M. Collins
2007, Zootaxa 1-38
Piranhas and their relatives have proven to be a challenging group from a systematic perspective, with difficulties in identification of species, linking of juveniles to adults, diagnosis of genera, and recognition of higher-level clades. In this study we add new molecular data consisting of three mitochondrial regions for museum vouchered...
A new, large, late pleistocene demosponge from Southeastern Florida
J.K. Rigby, K.J. Cunningham
2007, Journal of Paleontology (81) 788-793
[No abstract available]...
