Attributes for MRB_E2RF1 Catchments by Major River Basins in the Conterminous United States: NLCD 2001 Tree Canopy
Michael Wieczorek, Andrew E. LaMotte
2010, Data Series 491-06
This tabular data set represents the mean percent tree canopy from the Canopy Layer of the National Land Cover Dataset 2001 (LaMotte and Wieczorek, 2010), compiled for every MRB_E2RF1 catchment of Major River Basins (MRBs, Crawford and others, 2006). The source data set represents tree canopy percentage for the conterminous...
Red-shouldered hawk nesting habitat preference in south Texas
Bradley N. Strobel, Clint W. Boal
2010, Journal of Fish and Wildlife Management (1) 33-37
We examined nesting habitat preference by red-shouldered hawks Buteo lineatus using conditional logistic regression on characteristics measured at 27 occupied nest sites and 68 unused sites in 2005–2009 in south Texas. We measured vegetation characteristics of individual trees (nest trees and unused trees) and corresponding 0.04-ha plots. We evaluated the importance of...
Three-dimensional benchmark for variable-density flow and transport simulation: matching semi-analytic stability modes for steady unstable convection in an inclined porous box
Clifford I. Voss, Craig T. Simmons, Neville I. Robinson
2010, Hydrogeology Journal (18) 5-23
This benchmark for three-dimensional (3D) numerical simulators of variable-density groundwater flow and solute or energy transport consists of matching simulation results with the semi-analytical solution for the transition from one steady-state convective mode to another in a porous box. Previous experimental and analytical studies of natural convective flow in an...
The cleaning of burned and contaminated archaeological maize prior to 87Sr/86Sr analysis
Larry V. Benson, Howard E. Taylor, Terry I. Plowman, David A. Roth, Ronald C. Antweiler
2010, Journal of Archaeological Science (37) 84-91
Accurate trace-metal and strontium-isotope analyses of archaeological corn cobs require that metal contaminants be removed prior to chemical analysis. Archaeological cobs are often coated with construction debris, dust, or soil which contains mineral particles. In addition, most archaeological cobs are partially or completely burned and the burned parts incorporate mineral...
A complex-systems approach to predicting effects of sea level rise and nitrogen loading on nitrogen cycling in coastal wetland ecosystems
Laurel G. Larsen, Serena Moseman, Alyson Santoro, Kristine Hopfensperger, Amy Burgin
2010, Book chapter, Eco-DAS VIII Symposium Proceedings
To effectively manage coastal ecosystems, we need an improvedunderstanding of how tidal marsh ecosystem services will respond to sea-level rise and increased nitrogen (N) loading to coastal areas. Here we review existing literature to better understand how these interacting perturbations s will likely impact N removal by tidal marshes. We...
Development of a molecular diagnostic system to discriminate Dreissena polymorpha (zebra mussel) and Dreissena bugensis (quagga mussel)
M.S. Hoy, K. Kelly, R. J. Rodriguez
2010, Molecular Ecology Resources (10) 190-192
A 3-primer PCR system was developed to discriminate invasive zebra (Dreissena polymorpha) and quagga (Dreissena bugensis) mussel. The system is based on: 1) universal primers that amplifies a region of the nuclear 28s rDNA gene from both species and 2) a species-specific primer complementary to either zebra or quagga mussel....
Migrating tremors illuminate complex deformation beneath the seismogenic San Andreas fault
David R. Shelly
2010, Nature (463) 648-652
The San Andreas fault is one of the most extensively studied faults in the world, yet its physical character and deformation mode beneath the relatively shallow earthquake-generating portion remain largely unconstrained. Tectonic ‘non-volcanic’ tremor, a recently discovered seismic signal probably generated by shear slip on the deep extension of some major...
Potential of kaolin-based particle film barriers for Formosan subterranean termite (Isoptera: Rhinotermitidae) control
B.A. Wiltz, W.D. Woodson, G.J. Puterka
2010, Sociobiology (55) 405-414
Effects of three particle film products on Formosan subterranean termites, Coptotermes formosanus Shiraki, were evaluated in feeding, tunneling, and contact assays. The particle films, hydrophobic M96-018 and hydrophilic Surround and Surround WP are based on the inert clay mineral kaolin. In 2-week long no-choice feeding tests, significant mortality occurred only...
Traveling around Cape Horn: Otolith chemistry reveals a mixed stock of Patagonian hoki with separate Atlantic and Pacific spawning grounds
P.C. Schuchert, A.I. Arkhipkin, A.E. Koenig
2010, Fisheries Research (102) 80-86
Trace element fingerprints of edge and core regions in otoliths from 260 specimens of Patagonian hoki, Macruronus magellanicus L??nnberg, 1907, were analyzed by LA-ICPMS to reveal whether this species forms one or more population units (stocks) in the Southern Oceans. Fish were caught on their spawning grounds in Chile and...
Soil carbon flux following pulse precipitation events in the shortgrass steppe
S.M. Munson, T.J. Benton, W.K. Lauenroth, I.C. Burke
2010, Ecological Research (25) 205-211
Pulses of water availability characterize semiarid and arid ecosystems. Most precipitation events in these ecosystems are small (???10 mm), but can stimulate carbon flux. The large proportion of carbon stored belowground and small carbon inputs create the potential for these small precipitation events to have large effects on carbon cycling....
New seismic hazard maps for Puerto Rico and the U.S. Virgin Islands
Charles S. Mueller, Arthur D. Frankel, Mark D. Petersen, Edgar V. Leyendecker
2010, Earthquake Spectra (26) 169-185
The probabilistic methodology developed by the U.S. Geological Survey is applied to a new seismic hazard assessment for Puerto Rico and the U.S. Virgin Islands. Modeled seismic sources include gridded historical seismicity, subduction-interface and strike-slip faults with known slip rates, and two broad zones of crustal extension with seismicity rates...
Geological mapping goes 3-D in response to societal needs
H. Thorleifson, R. C. Berg, H.A.J. Russell
2010, GSA Today (20) 27-29
The transition to 3-D mapping has been made possible by technological advances in digital cartography, GIS, data storage, analysis, and visualization. Despite various challenges, technological advancements facilitated a gradual transition from 2-D maps to 2.5-D draped maps to 3-D geological mapping, supported by digital spatial and relational databases that can...
Modern technologies for an ancient fish: tools to inform management of migratory sturgeon stocks. A report for the Pacific Ocean Shelf Tracking (POST) Project
Troy C. Nelson, Phaedra Doukakis, Steven T Lindley, Andrea Drauch Schreier, Joseph E. Hightower, Larry R. Hildebrand, Rebecca E. Whitlock, Molly A. H. Webb
2010, Report
No abstract available....
Establishing a Multi-scale Stream Gaging Network in the Whitewater River Basin, Kansas, USA
J.A. Clayton, J. W. Kean
2010, Water Resources Management (24) 3641-3664
Investigating the routing of streamflow through a large drainage basin requires the determination of discharge at numerous locations in the channel network. Establishing a dense network of stream gages using conventional methods is both cost-prohibitive and functionally impractical for many research projects. We employ herein a previously tested, fluid-mechanically based...
The ecological limits of hydrologic alteration (ELOHA): A new framework for developing regional environmental flow standards
N.L. Poff, B. D. Richter, A.H. Arthington, S.E. Bunn, R.J. Naiman, E. Kendy, M. Acreman, C. Apse, B.P. Bledsoe, Mary C. Freeman, J. Henriksen, R. B. Jacobson, J.G. Kennen, D.M. Merritt, J. H. O’Keeffe, J. D. Olden, K. Rogers, R.E. Tharme, A. Warner
2010, Freshwater Biology (55) 147-170
The flow regime is a primary determinant of the structure and function of aquatic and riparian ecosystems for streams and rivers. Hydrologic alteration has impaired riverine ecosystems on a global scale, and the pace and intensity of human development greatly exceeds the ability of scientists to assess the effects on...
Relations between fish abundances, summer temperatures, and forest harvest in a northern Minnesota stream system from 1997 to 2007
Eric C. Merten, Nathaniel A. Hemstad, S.L. Eggert, L.B. Johnson, Randall K. Kolka, Raymond M. Newman, Bruce C. Vondracek
2010, Ecology of Freshwater Fish (19) 63-73
Short-term effects of forest harvest on fish habitat have been well documented, including sediment inputs, leaf litter reductions, and stream warming. However, few studies have considered changes in local climate when examining postlogging changes in fish communities. To address this need, we examined fish abundances between 1997 and 2007 in...
Desert wildfire and severe drought diminish survivorship of the long-lived Joshua Tree (Yucca brevifolia; Agavaceae)
L.A. DeFalco, T. C. Esque, S. J. Scoles-Sciulla, J. Rodgers
2010, American Journal of Botany (97) 243-250
Extreme climate events are transforming plant communities in the desert Southwest of the United States. Abundant precipitation in 1998 associated with El Ni??o Southern Oscillation (ENSO) stimulated exceptional alien annual plant production in the Mojave Desert that fueled wildfires in 1999. Exacerbated by protracted drought, 80% of the burned Yucca...
Pathology and distribution of sea turtles landed as bycatch in the Hawaii-based North Pacific pelagic longline fishery
Thierry M. Work, George H. Balazs
2010, Journal of Wildlife Diseases (46) 422-432
We examined the gross and microscopic pathology and distribution of sea turtles that were landed as bycatch from the Hawaii, USA–based pelagic longline fishery and known to be forced submerged. Olive ridley turtles (Lepidochelys olivacea) composed the majority of animals examined, and hook-induced perforation of the esophagus was the most...
Surface elevation change and susceptibility of different mangrove zones to sea-level rise on Pacific high islands of Micronesia
K. W. Krauss, Donald R. Cahoon, J. A. Allen, K. C. Ewel, J.C. Lynch, Nicole Cormier
2010, Ecosystems (13) 129-143
Mangroves on Pacific high islands offer a number of important ecosystem services to both natural ecological communities and human societies. High islands are subjected to constant erosion over geologic time, which establishes an important source of terrigeneous sediment for nearby marine communities. Many of these sediments are deposited in mangrove...
Saturn's icy satellites investigated by Cassini-VIMS. II. Results at the end of nominal mission
G. Filacchione, F. Capaccioni, R. N. Clark, J.N. Cuzzi, D. P. Cruikshank, A. Coradini, P. Cerroni, P. D. Nicholson, T. B. McCord, R. H. Brown, B. J. Buratti, F. Tosi, R.M. Nelson, R. Jaumann, K. Stephan
2010, Icarus (206) 507-523
We report the detailed analysis of the spectrophotometric properties of Saturn's icy satellites as derived by full-disk observations obtained by visual and infrared mapping spectrometer (VIMS) experiment aboard Cassini. In this paper, we have extended the coverage until the end of the Cassini's nominal mission (June 1st 2008), while a...
Alexandria's Eastern Harbor, Egypt: Pollen, microscopic charcoal, and the transition from natural to human-modified basin
J.-D. Stanley, C.E. Bernhardt
2010, Journal of Coastal Research (26) 67-79
Pollen and microscopic charcoal examined in Holocene sediment core samples record major environmental modifications affecting Alexandria's Eastern Harbor through time. We assess whether such changes on Egypt's coastal margin were influenced primarily by natural, or natural plus human, or primarily human factors. We focus on (1) the times when pollen...
Rapid polymerase chain reaction diagnosis of white-nose syndrome in bats
Jeffrey M. Lorch, A. Gargas, Carol U. Meteyer, B. M. Berlowski-Zier, D. E. Green, V. Shearn-Bochsler, N. J. Thomas, David S. Blehert
2010, Journal of Veterinary Diagnostic Investigation (22) 224-230
A newly developed polymerase chain reaction (PCR)-based method to rapidly and specifically detect Geomyces destructans on the wings of infected bats from small quantities (1–2 mg) of tissue is described in the current study (methods for culturing and isolating G. destructans from bat skin are also described). The lower limits of detection for PCR...
Evaluation of a reproductive index for estimating productivity of grassland breeding birds
M.R. Morgan, C. Norment, M.C. Runge
2010, The Auk (127) 86-93
Declining populations of grassland breeding birds have led to increased efforts to assess habitat quality, typically by estimating density or relative abundance. Because some grassland habitats may function as ecological traps, a more appropriate metric for determining quality is breeding success, which is challenging to determine for many cryptic-nesting grassland...
A global overview of drought and heat-induced tree mortality reveals emerging climate change risks for forests
Craig D. Allen, A.K. Macalady, H. Chenchouni, D. Bachelet, N. McDowell, Michel Vennetier, T. Kitzberger, A. Rigling, D.D. Breshears, E. H. Hogg, P. Gonzalez, R. Fensham, Z. Zhang, J. Castro, N. Demidova, J.-H. Lim, G. Allard, S. W. Running, A. Semerci, N. Cobb
2010, Forest Ecology and Management (259) 660-684
Greenhouse gas emissions have significantly altered global climate, and will continue to do so in the future. Increases in the frequency, duration, and/or severity of drought and heat stress associated with climate change could fundamentally alter the composition, structure, and biogeography of forests in many regions. Of particular concern are...
Trail Pheromone Disruption of Argentine Ant Trail Formation and Foraging
D.M. Suckling, R.W. Peck, L.D. Stringer, K. Snook, P.C. Banko
2010, Journal of Chemical Ecology (36) 122-128
Trail pheromone disruption of invasive ants is a novel tactic that builds on the development of pheromone-based pest management in other insects. Argentine ant trail pheromone, (Z)-9-hexadecenal, was formulated as a micro-encapsulated sprayable particle and applied against Argentine ant populations in 400 m2 field plots in Hawai'i Volcanoes National Park....
