Geology and mammalian paleontology of the Horned Toad Hills, Mojave Desert, California, USA
S.R. May, M.O. Woodburne, E.H. Lindsay, L.B. Albright, A. Sarna-Wojcicki, E. Wan, D.B. Wahl
2011, Palaeontologia Electronica (14) 13
The Horned Toad Formation includes five lithostratigraphic members that record alluvial fan, fluvial, lake margin, and lacustrine deposition within a relatively small basin just south of the active Garlock fault during the late Miocene to early Pliocene. These sediments experienced northwest-southeast contractional deformation during the Pliocene-Pleistocene associated with basement-involved reverse...
Coulomb stress change sensitivity due to variability in mainshock source models and receiving fault parameters: A case study of the 2010-2011 Christchurch, New Zealand, earthquakes
Zhongwen Zhan, Bikai Jin, Shengji Wei, Robert W. Graves
2011, Seismological Research Letters (82) 800-814
Strong aftershocks following major earthquakes present significant challenges for infrastructure recovery as well as for emergency rescue efforts. A tragic instance of this is the 22 February 2011 Mw 6.3 Christchurch aftershock in New Zealand, which caused more than 100 deaths while the 2010 Mw 7.1 Canterbury mainshock did not...
Remote sensing and geospatial support to burned area emergency response teams
Randy McKinley, Jess Clark
2011, Fire Management Today (71) 15-18
A major concern of land managers in the United States is the response of watersheds to weather after a wildfire. With an ever-expanding wildland-urban interface (WUI), land managers must be cognizant of potential damage to private property and other values at risk. In the United States, land-management agencies from the...
Radiotelemetry to estimate stream life of adult chum salmon in the McNeil River, Alaska
Joshua Peirce, Edward O. Otis, Mark S. Wipfli, Erich H. Follmann
2011, North American Journal of Fisheries Management (31) 315-322
Estimating salmon escapement is one of the fundamental steps in managing salmon populations. The area-under-the-curve (AUC) method is commonly used to convert periodic aerial survey counts into annual salmon escapement indices. The AUC requires obtaining accurate estimates of stream life (SL) for target species. Traditional methods for estimating SL (e.g.,...
Fire in the Cape Region of South Africa
Jon E. Keeley, William J. Bond, Ross A. Bradstock, Juli G. Pausas, Philip W. Rundel
2011, Book chapter, Fire in Mediterranean ecosystems: Ecology, evolution and management
South Africa's mediterranean-type climate (MTC) region is the smallest of the five MTC regions, centered in the southwestern corner of the Western Cape Province (Fig. 7.1). This Cape region is dominated by fynbos shrublands (see Fig. 1.6e) but this fynbos biome continues eastward far outside the MTC. The Cape region...
Coal resources for part of the Wilcox group (Paleocene-Eocene), northeast Texas
Peter D. Warwick, Claire E. Aubourg, Steven M. Podwysocki, Adam C. Schultz
Peter D. Warwick, Alexander K. Karlsen, Matthew D. Merrill, Brett J. Valentine, editor(s)
2011, Book chapter, Geologic assessment of coal in the Gulf of Mexico coastal plain
The Wilcox Group of northeast Texas contains shallow (less than 500 ft) coal deposits that are mined for use in mine-mouth electric power generating plants. The coal deposits, which are lignite in apparent rank (Pierce et al., 2011), are separated from similar shallow coal deposits in the Sabine uplift area...
Growth rates of rainbow smelt in Lake Champlain: Effects of density and diet
Thomson J.L. Stritzel, D.L. Parrish, S. L. Parker-Stetter, L. G. Rudstam, P.J. Sullivan
2011, Ecology of Freshwater Fish (20) 503-512
We estimated the densities of rainbow smelt (Osmerus mordax) using hydroacoustics and obtained specimens for diet analysis and groundtruthed acoustics data from mid‐water trawl sampling in four areas of Lake Champlain, USA–Canada. Densities of rainbow smelt cohorts alternated during the 2‐year study; age‐0 rainbow smelt were very abundant in 2001...
Leopard population and home range estimates in north-central Namibia
A.B. Stein, T.K. Fuller, S. DeStefano, L.L. Marker
2011, African Journal of Ecology (49) 383-387
[No abstract available]...
Understory response to varying fire frequencies after 20 years of prescribed burning in an upland oak forest
J.A. Burton, S.W. Hallgren, S.D. Fuhlendorf, David M. Leslie Jr.
2011, Plant Ecology (212) 1513-1525
Ecosystems in the eastern United States that were shaped by fire over thousands of years of anthropogenic burning recently have been subjected to fire suppression resulting in significant changes in vegetation composition and structure and encroachment by invasive species. Renewed interest in use of fire to manage such ecosystems will...
40Ar/39Ar dating of tuff vents in the Campi Flegrei caldera (southern Italy): Toward a new chronostratigraphic reconstruction of the Holocene volcanic activity
L. Fedele, D.D. Insinga, A.T. Calvert, V. Morra, A. Perrotta, C. Scarpati
2011, Bulletin of Volcanology (73) 1323-1336
The Campi Flegrei hosts numerous monogenetic vents inferred to be younger than the 15 ka Neapolitan Yellow Tuff. Sanidine crystals from the three young Campi Flegrei vents of Fondi di Baia, Bacoli and Nisida were dated using 40Ar/39Ar geochronology. These vents, together with several other young edifices, occur roughly along the...
A synthesis: Informing collaborative conservation and management of Colorado Plateau resources
Miguel L. Villarreal, Charles van Riper III, Carena J. van Riper, Matthew J. Johnson, S. Shane Selleck
Miguel L. Villarreal, Matthew J. Johnson, Charles van Riper III, editor(s)
2011, Book chapter, The Colorado Plateau V: Research, environmental planning, and management for collaborative conservation
No abstract available....
Multi-scale clustering of functional data with application to hydraulic gradients in wetlands
Mark C. Greenwood, Richard S. Sojda, Julia L. Sharp, Rory G. Peck, Donald O. Rosenberry
2011, Journal of Data Science (9) 399-426
A new set of methods are developed to perform cluster analysis of functions, motivated by a data set consisting of hydraulic gradients at several locations distributed across a wetland complex. The methods build on previous work on clustering of functions, such as Tarpey and Kinateder (2003) and Hitchcock et al....
Coulomb stress analysis of the 21 February 2008 Mw= 6.0 Wells, Nevada, earthquake
Volkan Sevilgen
2011, Nevada Bureau of Mines and Geology Special Publication 36
Static Coulomb stress changes imparted by the February 21, 2008 Wells, Nevada earthquake are calculated, using an 8 x 6 km rectangular patch with a uniform slip as a source fault. Stress changes are resolved on nearby active faults using their rake, dip, and strike direction, assuming a fault friction...
Survival of angled saugers in the lower Tennessee River
Christy L. Kitterman, Phillip William Bettoli
2011, North American Journal of Fisheries Management (31) 567-573
An intense winter fishery for sauger Sander canadensis exists in the lower Tennessee River, and the objective of this study was to estimate the survival of angled saugers. In February 2008 and January–March 2009, 81 angled saugers (72 live plus 9 euthanized) were affixed with ultrasonic tags. The movements...
Contain or eradicate? Optimizing the management goal for Australian acacia invasions in the face of uncertainty
J.L. Moore, M.C. Runge, B.L. Webber, J.R.U. Wilson
2011, Diversity and Distributions (17) 1047-1059
Aim To identify whether eradication or containment is expected to be the most cost‐effective management goal for an isolated invasive population when knowledge about the current extent is uncertain.Location Global and South Africa.Methods We developed a decision analysis framework to analyse the best management goal for an invasive species population (eradication, containment or...
New information on the braincase of the North American therizinosaurian (Theropoda, Maniraptora) Falcarius utahensis
David Smith, Lindsay E. Zanno, R. Kent Sanders, Donald D. Deblieux, James I. Kirkland
2011, Journal of Vertebrate Paleontology (31) 387-404
Many disarticulated bones from multiple individuals of a primitive therizinosaurian, referred to Falcarius utahensis, were found in the paucispecific Crystal Geyser bonebed in the Lower Cretaceous Cedar Mountain Formation of eastern Utah. To date, more than 2000 specimens from this species have been excavated. Included in this collection are two partial...
Inventory and suitability of facilities within the Mid-Columbia Basin for the artificial propagation of Pacific lampreys
M.G. Mesa, H.E. Christiansen
2011, Report
No abstract available ...
Occurrence of azoxystrobin, propiconazole, and selected other fungicides in US streams, 2005-2006
William A. Battaglin, Mark W. Sandstrom, Kathryn Kuivila, Dana W. Kolpin, Michael T. Meyer
2011, Water, Air, & Soil Pollution (218) 307-322
Fungicides are used to prevent foliar diseases on a wide range of vegetable, field, fruit, and ornamental crops. They are generally more effective as protective rather than curative treatments, and hence tend to be applied before infections take place. Less than 1% of US soybeans were treated with a fungicide...
Summer nitrate uptake and denitrification in an upper Mississippi River backwater lake: The role of rooted aquatic vegetation
Rebecca Kreiling, William B. Richardson, J.C. Cavanaugh, Lynn Bartsch
2011, Biogeochemistry (104) 309-324
In-stream nitrogen processing in the Mississippi River has been suggested as one mechanism to reduce coastal eutrophication in the Gulf of Mexico. Aquatic macrophytes in river channels and flood plain lakes have the potential to temporarily remove large quantities of nitrogen through assimilation both by themselves and by the attached...
Estimating trends in alligator populations from nightlight survey data
Ikuko Fujisaki, Frank J. Mazzotti, Robert M. Dorazio, Kenneth G. Rice, Michael Cherkiss, Brian Jeffery
2011, Wetlands (31) 147-155
Nightlight surveys are commonly used to evaluate status and trends of crocodilian populations, but imperfect detection caused by survey- and location-specific factors makes it difficult to draw population inferences accurately from uncorrected data. We used a two-stage hierarchical model comprising population abundance and detection probability to examine recent abundance trends...
Seasonal habitat shifts by benthic fishes in headwater streams
Adam V. Rettig, Shannon K. Brewer
2011, Proceedings of the Southeastern Association of Fish and Wildlife Agencies (65) 105-111
Fish-habitat associations in streams have been widely studied; however, temporal considerations have been neglected, particularly during the winter. We quantitatively sampled perennial headwater streams in the Missouri Ozarks during the summer (n = 13) and winter (n = 4) to evaluate possible habitat shifts by three benthic fishes at two...
Eruption dynamics of Hawaiian-style fountains: The case study of episode 1 of the Kilauea Iki 1959 eruption
W.K. Stovall, Bruce F. Houghton, H. Gonnermann, S.A. Fagents, Don Swanson
2011, Bulletin of Volcanology (73) 511-529
Hawaiian eruptions are characterized by fountains of gas and ejecta, sustained for hours to days that reach tens to hundreds of meters in height. Quantitative analysis of the pyroclastic products from the 1959 eruption of Kīlauea Iki, Kīlauea volcano, Hawai‘i, provides insights into the processes occurring during typical Hawaiian fountaining...
Inference for occupancy and occupancy dynamics
Allan F. O’Connell, Larissa L. Bailey
Allan F. O’Connell, James D. Nichols, K. Ullas Karanth, editor(s)
2011, Book chapter, Camera traps in animal ecology
This chapter deals with the estimation of occupancy as a state variable to assess the status of, and track changes in, species distributions when sampling with camera traps. Much of the recent interest in occupancy estimation and modeling originated from the models developed by MacKenzie et al. (2002, 2003), although...
Response to comment on "pAHs underfoot: Contaminated dust from coal-tar sealcoated pavement is widespread in the U.S."
Peter C. Van Metre, Barbara Mahler
2011, Environmental Science & Technology (45) 3187-3188
No abstract available....
Evaluation of ADCP apparent bed load velocity in a large sand-bed river: Moving versus stationary boat conditions
E. C. Jamieson, C. D. Rennie, R. B. Jacobson, R. D. Townsend
2011, Journal of Hydraulic Engineering (137) 1064-1071
Detailed mapping of bathymetry and apparent bed load velocity using a boat-mounted acoustic Doppler current profiler (ADCP) was carried out along a 388-m section of the lower Missouri River near Columbia, Missouri. Sampling transects (moving boat) were completed at 5- and 20-m spacing along the study section....
