Geology and Mineral Resources of the East Mojave National Scenic Area, San Bernardino County, California
Ted G. Theodore, editor(s)
2007, Bulletin 2160
The rocks of the East Mojave National Scenic Area (EMNSA) record a history of dynamic geologic events that span more than 1,800 million years (m.y.). These geologic events contributed significantly to development of the spectacular vistas and panoramas present in the area today. The oldest rocks underlie much of the...
Distribution and abundance of California giant salamander (Dicamptodon ensatus) and signal crayfish (Pacifastacus leniusculus) in the Upper Redwood Creek Watershed, Marin County, California
Darren Fong, Judd A. Howell
2006, Open-File Report 2006-1066
A survey was conducted in 1997-1998 to identify the distribution of non-native signal crayfish (Pacifastacus leniusculus) and larval California giant salamanders (Dicamptodon ensatus) within the upper Redwood Creek watershed (Marin County, California). The crayfish is widely distributed along the mainstem Redwood Creek. It was found in lower Fern Creek but...
Modeling approaches in avian conservation and the role of field biologists
Steven R. Beissinger, J. R. Walters, D.G. Catanzaro, Kimberly G. Smith, J.B. Dunning, Susan M. Haig, Barry Noon, Bradley Stith
2006, Ornithological Monographs (59) iii-56
This review grew out of our realization that models play an increasingly important role in conservation but are rarely used in the research of most avian biologists. Modelers are creating models that are more complex and mechanistic and that can incorporate more of the knowledge acquired by field biologists. Such...
Genetic analyses of captive Alala (Corvus hawaiiensis) using AFLP analyses
Susan I. Jarvi, Kiara R. Bianchi
2006, Open-File Report 2006-1349
Population level studies of genetic diversity can provide information about population structure, individual genetic distinctiveness and former population size. They are especially important for rare and threatened species like the Alala, where they can be used to assess extinction risks and evolutionary potential. In an ideal situation multiple methods should...
Predicting regional abundance of rare grassland birds with a hierarchical spatial count model
W.E. Thogmartin, M. G. Knutson, J.R. Sauer
2006, Condor (108) 25-46
Grassland birds are among the most imperiled groups of birds in North America. Unfortunately, little is known about the location of regional concentrations of these birds, thus regional or statewide conservation efforts may be inappropriately applied, reducing their effectiveness. We identified environmental covariates associated with the abundance of...
Assessing recreation impacts to cliffs in Shenandoah National Park: Integrating visitor observation with trail and recreation site measurements
K.T. Wood, S.R. Lawson, J. L. Marion
2006, Journal of Park and Recreation Administration (24) 86-110
The rock outcrops and cliffs of Shenandoah National Park provide habitat for several rare and endangered plant and animal species, including the federally endangered Shenandoah Salamander (Plethodon shenandoah; Ludwig et al., 1993). The location of the well-known park tour road, Skyline Drive, along the ridgeline provides exceptional access to...
Estimating site occupancy and detection probability parameters for meso- and large mammals in a coastal eosystem
Allan F. O’Connell, Neil W. Talancy, Larissa L. Bailey, John R. Sauer, Robert Cook, Andrew T. Gilbert
2006, Journal of Wildlife Management (70) 1625-1633
Large-scale, multispecies monitoring programs are widely used to assess changes in wildlife populations but they often assume constant detectability when documenting species occurrence. This assumption is rarely met in practice because animal populations vary across time and space. As a result, detectability of a species can be influenced by a...
Nest fate and productivity of American Oystercatchers, Cumberland Island National Seashore, Georgia
J. B. Sabine, Sara H. Schweitzer, J.M. Meyers
2006, Waterbirds (29) 308-314
The American Oystercatcher (Haematopus palliatus) is listed as a species of high priority by the U.S. Shorebird Conservation Plan and is state-listed as rare in Georgia; however, biologists have not focused on identifying the causes of egg and hatchling losses. In 2003 and 2004, continuous video monitoring was used...
Assessing tiger population dynamics using photographic capture-recapture sampling
K. U. Karanth, J.D. Nichols, S. Kumar, J.E. Hines
2006, Ecology (87) 2925-2937
Although wide-ranging, elusive, large carnivore species, such as the tiger, are of scientific and conservation interest, rigorous inferences about their population dynamics are scarce because of methodological problems of sampling populations at the required spatial and temporal scales. We report the application of a rigorous, noninvasive method for assessing...
Vascular Plant and Vertebrate Inventory of Montezuma Castle National Monument
Cecilia A. Schmidt, Charles A. Drost, William Lee Halvorson
2006, Open-File Report 2006-1163
Executive Summary We summarize past inventory efforts for vascular plants and vertebrates at Montezuma Castle National Monument (NM) in Arizona. We used data from previous research to compile complete species lists for the monument and to assess inventory completeness. There have been 784 species recorded at Montezuma Castle NM, of which 85...
Organic Compounds and Trace Elements in Fish Tissue and Bed Sediment in the Delaware River Basin, New Jersey, Pennsylvania, New York, and Delaware, 1998-2000
Kristin M. Romanok, Jeffrey M. Fischer, Karen Riva-Murray, Robin Brightbill, Michael Bilger
2006, Scientific Investigations Report 2006-5150
As part of the National Water-Quality Assessment (NAWQA) program activities in the Delaware River Basin (DELR), samples of fish tissue from 21 sites and samples of bed sediment from 35 sites were analyzed for a suite of organic compounds and trace elements. The sampling sites, within subbasins ranging in size...
Fecal-indicator bacteria in the Allegheny, Monongahela, and Ohio Rivers and selected tributaries, Allegheny County, Pennsylvania, 2001-2005
Theodore F. Buckwalter, Tammy M. Zimmerman, John W. Fulton
2006, Scientific Investigations Report 2006-5216
Concentrations of fecal-indicator bacteria were determined in 1,027 water-quality samples collected from July 2001 through August 2005 during dry- (72-hour dry antecedent period) and wet-weather (48-hour dry antecedent period and at least 0.3 inch of rain in a 24-hour period) conditions in the Allegheny, Monongahela, and Ohio Rivers (locally referred...
Flood Study of Warren Brook in Alstead and Cold River in Alstead, Langdon, and Walpole, New Hampshire, 2005
Robert H. Flynn
2006, Open-File Report 2006-1313
This report presents water-surface elevations and profiles as determined using the U.S. Army Corps of Engineers (USACE) one-dimensional Hydrologic Engineering Center River Analysis System, also known as HEC-RAS. Steady flow water-surface profiles were developed for two stream reaches: the Cold River from its confluence with the Connecticut River in Walpole,...
Overview of the Opportunity Mars Exploration Rover Mission to Meridiani Planum: Eagle Crater to Purgatory Ripple
S. W. Squyres, R. E. Arvidson, D. Bollen, J.F. Bell III, J. Bruckner, N.A. Cabrol, W. M. Calvin, M. H. Carr, P. R. Christensen, B. C. Clark, L. Crumpler, D.J. Des Marais, C. D'Uston, T. Economou, J. Farmer, W.H. Farrand, W. Folkner, R. Gellert, T.D. Glotch, M. Golombek, S. Gorevan, J. A. Grant, R. Greeley, J. Grotzinger, Kenneth E. Herkenhoff, S. Hviid, J. R. Johnson, G. Klingelhoefer, A.H. Knoll, G. Landis, M. Lemmon, Ron Li, M.B. Madsen, M.C. Malin, S. M. McLennan, H.Y. McSween, D. W. Ming, J. Moersch, R.V. Morris, T. Parker, J. W. Rice Jr., L. Richter, R. Rieder, Christian Schroeder, M. Sims, M. Smith, P. Smith, Laurence A. Soderblom, R. Sullivan, N.J. Tosca, H. Wänke, T. Wdowiak, M. Wolff, A. Yen
2006, Journal of Geophysical Research E: Planets (111)
The Mars Exploration Rover Opportunity touched down at Meridiani Planum in January 2004 and since then has been conducting observations with the Athena science payload. The rover has traversed more than 5 km, carrying out the first outcrop‐scale investigation of sedimentary rocks on Mars. The rocks of Meridiani Planum are...
Strength in Numbers: Describing the Flooded Area of Isolated Wetlands
Terrie M. Lee, Kim H. Haag
2006, Fact Sheet 2006-3118
Thousands of isolated, freshwater wetlands are scattered across the karst1 landscape of central Florida. Most are small (less than 15 acres), shallow, marsh and cypress wetlands that flood and dry seasonally. Wetland health is threatened when wetland flooding patterns are altered either by human activities, such as land-use change and...
Inventory of amphibians and reptiles at Death Valley National Park
Trevor B. Persons, Erika M. Nowak
2006, Open-File Report 2006-1233
As part of the National Park Service Inventory and Monitoring Program in the Mojave Network, we conducted an inventory of amphibians and reptiles at Death Valley National Park in 2002-04. Objectives for this inventory were to: 1) Inventory and document the occurrence of reptile and amphibian species occurring at DEVA, primarily within priority sampling areas, with...
Inventory of Amphibians and Reptiles at Manzanar National Historic Site, California
Trevor B. Persons, Erika M. Nowak, Scott Hillard
2006, Open-File Report 2006-1232
We conducted a baseline inventory for amphibians and reptiles at Manzanar National Historic Site (MANZ), Inyo County, California, in 2002-3. Objectives for this inventory were to: 1) inventory and document the occurrence of reptile and amphibian species at MANZ, with the goal of documenting at least 90% of the species present; 2) provide one voucher specimen...
usSEABED: Gulf of Mexico and Caribbean (Puerto Rico and U.S. Virgin Islands) offshore surficial sediment data release
Brian J. Buczkowski, Jane A. Reid, Chris J. Jenkins, Jamey M. Reid, S. Jeffress Williams, James G. Flocks
2006, Data Series 146
Over the past 50 years there has been an explosion in scientific interest, research effort and information gathered on the geologic sedimentary character of the United States continental margin. Data and information from thousands of publications have greatly increased our scientific understanding of the geologic origins of the shelf surface...
Regional evaluation of the hydrogeologic framework, hydraulic properties, and chemical characteristics of the intermediate aquifer system underlying southern west-central Florida
Lari A. Knochenmus
2006, Scientific Investigations Report 2006-5013
Three major aquifer systems-the surficial aquifer system, the intermediate aquifer system, and the Floridan aquifer system-are recognized in the approximately 5,100-square-mile southern west-central Florida study area. The principal source of freshwater for all uses is ground water supplied from the three aquifer systems. Ground water from the intermediate aquifer system...
Land-cover trends in the Mojave basin and range ecoregion
Benjamin M. Sleeter, Christian G. Raumann
2006, Scientific Investigations Report 2006-5098
The U.S. Geological Survey's Land-Cover Trends Project aims to estimate the rates of contemporary land-cover change within the conterminous United States between 1972 and 2000. A random sampling approach was used to select a representative sample of 10-km by 10-km sample blocks and to estimate change within +/- 1 percent...
The behavior of rare earth elements in naturally and anthropogenically acidified waters
Scott A. Wood, Chris Gammons, Stephen R. Parker
2006, Journal of Alloys and Compounds (418) 161-165
In this paper, the behavior of rare earth elements (REE) in a watershed impacted by acid-mine drainage (Fisher Creek, Montana) is compared to that in a volcanically acidified watershed (Rio Agrio and Lake Caviahue, Argentina). The REE behave conservatively in acidic waters with pH values less than approximately 5.5. However,...
usSEABED: Pacific Coast (California, Oregon, Washington) Offshore Surficial-Sediment Data Release, version 1
Jane A. Reid, Jamey M. Reid, Chris J. Jenkins, Mark Zimmermann, S. Jeffress Williams, Michael E. Field
2006, Data Series 182
Over the past 50 years there has been an explosion in scientific interest, research effort, and information gathered on the geologic sedimentary character of the continental margin of the United States. Data and information from thousands of publications have greatly increased our scientific understanding of the geologic origins of the...
Water quality and relation to taste-and-odor compounds in the North Fork Ninnescah River and Cheney Reservoir, south-central Kansas, 1997-2003
Victoria G. Christensen, Jennifer L. Graham, Chad R. Milligan, Larry M. Pope, Andrew C. Ziegler
2006, Scientific Investigations Report 2006-5095
Cheney Reservoir, the primary water supply for the city of Wichita in south-central Kansas, and its main source of inflow, the North Fork Ninnescah River, were sampled between 1997 and 2003 for sediment, nutrients, and the taste-and-odor-causing compounds geosmin and 2-methylisoborneol (MIB). It is believed that objectionable tastes and odors...
User's Guide, software for reduction and analysis of daily weather and surface-water data: Tools for time series analysis of precipitation, temperature, and streamflow data
Richard Hereford
2006, Open-File Report 2006-1101
The software described here is used to process and analyze daily weather and surface-water data. The programs are refinements of earlier versions that include minor corrections and routines to calculate frequencies above a threshold on an annual or seasonal basis. Earlier versions of this software were used successfully to analyze...
Facing the great disaster : How the men and women of the U.S. Geological Survey responded to the 1906 "San Francisco Earthquake"
Elizabeth M. Colvard, James Rogers
2006, General Information Product 31
It was the most devastating earthquake in California’s history. At 5:12 a.m. on April 18, 1906, the ground under the San Francisco Bay Area shook violently for more than 40 seconds. The magnitude 7.8 earthquake created a rupture along nearly 300 miles of the San Andreas Fault and was felt...
