Systematics of the Platyrrhinus helleri species complex (Chiroptera: Phyllostomidae), with descriptions of two new species
Paul M. Velazco, Alfred L. Gardner, Bruce D. Patterson
2010, Zoological Journal of the Linnean Society (159) 785-812
Platyrrhinus is a diverse genus of small to large phyllostomid bats characterized by a comparatively narrow uropatagium thickly fringed with hair, a white dorsal stripe, comparatively large inner upper incisors that are convergent at the tips, and three upper and three lower molars. Eighteen species are currently recognized, the majority...
Sustaining visitor use in protected areas: Future opportunities in recreation ecology research based on the USA experience
Christopher A. Monz, David N. Cole, Yu-Fai Leung, Jeffrey L. Marion
2010, Environmental Management (45) 551-562
Recreation ecology, the study of environmental consequences of outdoor recreation activities and their effective management, is a relatively new field of scientific study having emerged over the last 50 years. During this time, numerous studies have improved our understanding of how use-related, environmental and managerial factors affect ecological conditions and processes....
Suspended-sediment concentration regimes for two biological reference streams in Middle Tennessee
Timothy H. Diehl, William J. Wolfe
2010, Journal of the American Water Resources Association (46) 824-837
Temporal patterns of suspended-sediment concentration (SSC) duration and frequency (SSC regimes) were characterized and compared with biological impairment thresholds for two headwater streams in the Western Highland Rim of Tennessee. The SSC regimes were plotted as curves showing concentrations and durations of the annual longest and tenth-longest SSC excursions above...
Modeling seasonal dynamics of small fish cohorts in fluctuating freshwater marsh landscapes
Fred Jopp, Donald L. DeAngelis, Joel C. Trexler
2010, Landscape Ecology (25) 1041-1054
Small-bodied fishes constitute an important assemblage in many wetlands. In wetlands that dry periodically except for small permanent waterbodies, these fishes are quick to respond to change and can undergo large fluctuations in numbers and biomasses. An important aspect of landscapes that are mixtures of marsh and permanent waterbodies is...
Stimulation of methane generation from nonproductive coal by addition of nutrients or a microbial consortium
Elizabeth Jones, Mary A. Voytek, M.D. Corum, William H. Orem
2010, Applied and Environmental Microbiology (76) 7013-7022
Biogenic formation of methane from coal is of great interest as an underexploited source of clean energy. The goal of some coal bed producers is to extend coal bed methane productivity and to utilize hydrocarbon wastes such as coal slurry to generate new methane. However, the process and factors controlling...
Status of the California condor (Gymnogyps californianus) and efforts to achieve its recovery
Jeffrey R. Walters, Scott R. Derrickson, D. Michael Fry, Susan M. Haig, John M. Marzluff, Joseph M. Wunderle
2010, The Auk (127) 969-1001
The California Condor (Gymnogyps californianus; hereafter "condor"; Fig. 1) has long been symbolic of avian conservation in the United States. Its large size, inquisitiveness, and association with remote places make it highly charismatic, and its decline to the brink of extinction aroused a continuing public interest in its plight. By...
Stakeholder perspectives on land-use strategies for adapting to climate-change-enhanced coastal hazards: Sarasota, Florida
Tim G. Frazier, Nathan Wood, Brent Yarnal
2010, Applied Geography (30) 506-517
Sustainable land-use planning requires decision makers to balance community growth with resilience to natural hazards. This balance is especially difficult in many coastal communities where planners must grapple with significant growth projections, the persistent threat of extreme events (e.g., hurricanes), and climate-change-driven sea level rise that not only presents a...
Spring migration and summer destinations of northern pintails from the coast of southern California
Michael R. Miller, John Y. Takekawa, Daniel S. Battaglia, Richard T. Golightly, William M. Perry
2010, Southwestern Naturalist (55) 501-509
To examine pathways, timing, and destinations during migration in spring, we attached satellite-monitored transmitters (platform transmitting terminals) to 10 northern pintails (Anas acuta) during February 2001, at Point Mugu, Ventura County, California. This is a wintering area on the southern coast of California. We obtained locations from five adult males...
Seismotectonics and fault structure of the California Central Coast
Jeanne L. Hardebeck
2010, Bulletin of the Seismological Society of America (100) 1031-1050
I present and interpret new earthquake relocations and focal mechanisms for the California Central Coast. The relocations improve upon catalog locations by using 3D seismic velocity models to account for lateral variations in structure and by using relative arrival times from waveform cross-correlation and double-difference methods to image seismicity features...
A role for analytical chemistry in advancing our understanding of the occurrence, fate, and effects of Corexit Oil Dispersants
Ben Place, Brian Anderson, Abdou Mekebri, Edward T. Furlong, James L. Gray, Ron Tjeerdema, Jennifer Field
2010, Environmental Science & Technology (44) 6016-6018
On April 24, 2010, the sinking of the Deepwater Horizon oil rig resulted in the release of oil into the Gulf of Mexico. As of July 19, 2010, the federal government's Deepwater Horizon Incident Joint Information Center estimates the cumulative range of oil released is 3,067,000 to 5,258,000 barrels, with...
Source and fate of inorganic solutes in the Gibbon River, Yellowstone National Park, Wyoming, USA. II. Trace element chemistry
R. Blaine McCleskey, D. Kirk Nordstrom, David D. Susong, James W. Ball, Howard E. Taylor
2010, Journal of Volcanology and Geothermal Research (196) 139-155
The Gibbon River in Yellowstone National Park receives inflows from several geothermal areas, and consequently the concentrations of many trace elements are elevated compared to rivers in non-geothermal watersheds. Water samples and discharge measurements were obtained from the Gibbon River and its major tributaries near Norris Geyser Basin under the...
Aquifer Storage Recovery (ASR) of chlorinated municipal drinking water in a confined aquifer
John A. Izbicki, Christen E. Petersen, Kenneth J. Glotzbach, Loren F. Metzger, Allen H. Christensen, Gregory A. Smith, David R. O’Leary, Miranda S. Fram, Trevor Joseph, Heather Shannon
2010, Applied Geochemistry (25) 1133-1152
About 1.02 × 106 m3 of chlorinated municipal drinking water was injected into a confined aquifer, 94–137 m below Roseville, California, between December 2005 and April 2006. The water was stored in the aquifer for 438 days, and 2.64 × 106 m3 of water were extracted between July 2007 and February 2008. On the basis of Cl− data, 35% of the...
Simulated impacts of artificial groundwater recharge and discharge of the source area and source volume of an Atlantic Coastal Plain Stream, Delaware, USA
Joshua W. Kasper, Judish M. Denver, Thomas E. McKenna, William J. Ullman
2010, Hydrogeology Journal (18) 1855-1866
A numerical groundwater-flow model was used to characterize the source area and volume of Phillips Branch, a baseflow-dominated stream incising a highly permeable unconfined aquifer on the low relief Delmarva Peninsula, USA. Particle-tracking analyses indicate that the source area (5.51 km2) is ~20% smaller than the topographically defined watershed (6.85...
Modeling spatial variation in avian survival and residency probabilities
James F. Saracco, J. Andrew Royle, David F. DeSante, Beth Gardner
2010, Ecology (91) 1885-1891
The importance of understanding spatial variation in processes driving animal population dynamics is widely recognized. Yet little attention has been paid to spatial modeling of vital rates. Here we describe a hierarchical spatial autoregressive model to provide spatially explicit year-specific estimates of apparent survival (phi) and residency (pi) probabilities from...
Modeling amphibian energetics, habitat suitability, and movements of western toads, Anaxyrus (=Bufo) boreas, across present and future landscapes
Paul E. Bartelt, Robert W. Klaver, Warren P. Porter
2010, Ecological Modelling (221) 2675-2686
Effective conservation of amphibian populations requires the prediction of how amphibians use and move through a landscape. Amphibians are closely coupled to their physical environment. Thus an approach that uses the physiological attributes of amphibians, together with knowledge of their natural history, should be helpful. We used Niche Mapper™ to...
Spatially explicit inference for open populations: Estimating demographic parameters from camera-trap studies
Beth Gardner, Juan Reppucci, Mauro Lucherini, J. Andrew Royle
2010, Ecology (91) 3376-3383
We develop a hierarchical capture–recapture model for demographically open populations when auxiliary spatial information about location of capture is obtained. Such spatial capture–recapture data arise from studies based on camera trapping, DNA sampling, and other situations in which a spatial array of devices records encounters of unique individuals. We integrate...
Spatial variability in growth-increment chronologies of long-lived freshwater mussels: Implications for climate impacts and reconstructions
Bryan A. Black, Jason B. Dunham, Brett W. Blundon, Mark F. Raggon, Daniela Zima
2010, Écoscience (17) 240-250
Estimates of historical variability in river ecosystems are often lacking, but long-lived freshwater mussels could provide unique opportunities to understand past conditions in these environments. We applied dendrochronology techniques to quantify historical variability in growth-increment widths in valves (shells) of western pearlshell freshwater mussels (Margaritifera falcata). A total of 3...
Spatial patterns of bee captures in North American bowl trapping surveys
Sam Droege, Vincent J. Tepedino, Gretchen Lebuhn, William Link, Robert L. Minckley, Qian Chen, Casey Conrad
2010, Insect Conservation and Diversity (3) 15-23
1. Bowl and pan traps are now commonly used to capture bees (Hymenoptera: Apiformes) for research and surveys. 2. Studies of how arrangement and spacing of bowl traps affect captures of bees are needed to increase the efficiency of this capture technique. 3. We present results from seven...
Short-term effects of experimental fires on a Mojave Desert seed bank
Todd C. Esque, James A. Young, C. Richard Tracy
2010, Journal of Arid Environments (74) 1302-1308
A Mojave Desert shrub community was experimentally burned to understand changes in seed bank of desert annual plant species in response to wildfire. Seed mortality ranged from 55 to 80%, and fire caused significant losses of native and alien annual seeds. Schismus arabicus, Schismus barbatus, Bromus madritensis, Bromus tectorum, Erodium...
Spatial dynamics of bar-headed geese migration in the context of H5N1
L. Bourouiba, Jianhong Wu, S. Newman, John Y. Takekawa, T. Natdorj, N. Batbayar, C.M. Bishop, L.A. Hawkes, P.J. Butler, M. Wikelski
2010, Journal of the Royal Society Interface (7) 1627-1639
Virulent outbreaks of highly pathogenic avian influenza (HPAI) since 2005 have raised the question about the roles of migratory and wild birds in the transmission of HPAI. Despite increased monitoring, the role of wild waterfowl as the primary source of the highly pathogenic H5N1 has not been clearly established. The...
Mineral Commodity Summaries 2010
Water Resources Division, U.S. Geological Survey
2010, Mineral Commodity Summaries 2010
Each chapter of the 2010 edition of the U.S. Geological Survey (USGS) Mineral Commodity Summaries (MCS) includes information on events, trends, and issues for each mineral commodity as well as discussions and tabular presentations on domestic industry structure, Government programs, tariffs, 5-year salient statistics, and world production and resources. The...
Seasonal movements, winter range use, and migratory connectivity of the Black Oystercatcher
Matthew Johnson, Peter Clarkson, Michael I. Goldstein, Susan M. Haig, Richard B. Lanctot, David F. Tessler, Denny Zwiefelhofer
2010, The Condor (112) 731-743
The Black Oystercatcher (Haematopus bachmani) is an intertidal obligate along North America's Pacific coast and a species of high conservation concern (population size 8900–11 000 individuals). Understanding birds' movements and space use throughout the annual cycle has become paramount in the face of changing environmental conditions, and intertidal species may...
Salinity tolerance of the African Jewelfish Hemichromis letourneuxi, a non-native cichlid in South Florida (USA)
Jacqueline N. Langston, Pamela J. Schofield, Jeffrey E. Hill, William F. Loftus
2010, Copeia (2010) 475-480
The African Jewelfish (Cichlidae: Hemichromis letourneuxi) is a predatory, non-native fish that has recently (since 2000) begun to expand its geographic range across south Florida. The salinity tolerance of H. letourneuxi was unknown, and thus it was unclear whether the species could use estuarine or coastal environments. The response of H....
Occurrence of organic wastewater-indicator compounds in urban streams of the Atlanta area, Georgia, 2003-2006
Stephen J. Lawrence, Jacob H. LaFontaine
2010, Scientific Investigations Report 2010-5209
Between March 2003 and January 2006, 863 water samples were collected from streams in seven urban watersheds with varying land uses within or near the City of Atlanta, Georgia. Sixty-four sampling sites representing three site types were established in those watersheds. The first type consisted of sites within three watersheds...
Geomorphology and depositional subenvironments of Gulf Islands National Seashore, Perdido Key and Santa Rosa Island, Florida
Robert A. Morton, Marilyn C. Montgomery
2010, Open-File Report 2010-1330
The U.S. Geological Survey (USGS) is studying coastal hazards and coastal change to improve our understanding of coastal ecosystems and to develop better capabilities of predicting future coastal change. One approach to understanding the dynamics of coastal systems is to monitor changes in barrier-island subenvironments through time. This involves examining...
