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Articles 271 - 300 of 79191
Full-Text Articles in Entire DC Network
December 29, 2007: More On Craig Unger The Neocons And Religion, Bruce Ledewitz
December 29, 2007: More On Craig Unger The Neocons And Religion, Bruce Ledewitz
Hallowed Secularism
More on Craig Unger the Neocons and Religion
12/29/2007 Obituary Records, Hawaii Obituaries
12/29/2007 Obituary Records, Hawaii Obituaries
Obituaries
List of Obituaries for individuals who passed away on 12/29/2007. Scroll down to see the names and obituary description.
12/29/2007 Obituary Records, Hawaii Obituaries
12/29/2007 Obituary Records, Hawaii Obituaries
Obituaries
List of Obituaries for individuals who passed away on 12/29/2007. Scroll down to see the names and obituary description.
December 29, 2007 (Pages 6891-6982), Pennsylvania Legislative Reference Bureau
December 29, 2007 (Pages 6891-6982), Pennsylvania Legislative Reference Bureau
Volume 37 (2007)
No abstract provided.
The Murray Ledger And Times, December 29, 2007, The Murray Ledger And Times
The Murray Ledger And Times, December 29, 2007, The Murray Ledger And Times
The Murray Ledger & Times
No abstract provided.
An Optical Model For Heat And Salt Budget Estimation For Shallow Seas, Hari Warrior, Kendall L. Carder
An Optical Model For Heat And Salt Budget Estimation For Shallow Seas, Hari Warrior, Kendall L. Carder
Marine Science Faculty Publications
The effects of the underwater light field on heat-budget calculations for shallow waters are developed and applied for the region of Bahamas. Most of the general circulation models use a simplified heat budget scheme based on Jerlov water types, and do not account for optical bottom effects. by optical bottom effect, we mean the bottom absorption and reflection of the short-wave radiation, which in turn affects the thermal stratification and heat exchange with the atmosphere. In this paper, this optical bottom effect is added to a 3D turbulence model (a 1D model called GOTM is coupled to a 3D model …
Asteroid Impact With Mars Could Reveal Dangers To Earth, Sherry Wallace
Asteroid Impact With Mars Could Reveal Dangers To Earth, Sherry Wallace
News and Events (Discontinued Series)
No abstract provided.
Stem Cells: The Dawn Of A New Era For Huntington’S Disease Research, Kenneth P. Serbin
Stem Cells: The Dawn Of A New Era For Huntington’S Disease Research, Kenneth P. Serbin
At Risk for Huntington's Disease
No abstract provided.
Optical Estimation Of Auroral Ion Upflow: Theory, M. Zettergren, J. L. Semeter, P. L. Blelly, M. Diaz
Optical Estimation Of Auroral Ion Upflow: Theory, M. Zettergren, J. L. Semeter, P. L. Blelly, M. Diaz
Publications
This work presents a systematic analysis of optical emissions related to auroral ion upflow. Optical intensities and field‐aligned ion transport are computed for a set of monoenergetic incident electron beams using a combined fluid‐kinetic model. The kinetic portion models the energetic particle transport with a multiple stream approach and provides ionization, excitation, and heating rates to an eight‐moment fluid model of the ionosphere, which then calculates the resulting ion upflow. The analysis is used to develop a technique for estimating upward ion flux from photometric measurements at five discrete wavelengths: 427.8 nm, 557.7 nm, 630.0 nm, 732 nm, and 844.6 …
Kevion Demont "Boo" Robinson
African American Funeral Programs
Funeral Program for Kevin Demont "Boo" Robinson on Dec. 29, 2007 at Southeast Bulloch High School Auditorium
Growth And Demography Of One Population Of The Lizard Sceloporus Mucronatus Mucronatus, Angela M. Ortega-León, Emily R. Smith, J. Jaime Zúñiga-Vega, Fausto R. Méndez–De La Cruz
Growth And Demography Of One Population Of The Lizard Sceloporus Mucronatus Mucronatus, Angela M. Ortega-León, Emily R. Smith, J. Jaime Zúñiga-Vega, Fausto R. Méndez–De La Cruz
Western North American Naturalist
We report on growth and demography of Sceloporus mucronatus mucronatus, a lizard subspecies endemic to central Mexico. We characterize the life history of this subspecies, provide quantitative information relevant to conservation, and add to the growing literature on the diversity of life histories in the genus Sceloporus. We calculated body growth rates and fitted them to the Von Bertalanffy, the logistic-by-length, and the logistic-by-weight growth models. The Von Bertalanffy model provided the best fit, and we used it to analyze the growth pattern. Growth rates were similar during the 1st year of life in both sexes, but after …
Diatom Species Composition And Ecology Of The Animas River Watershed, Colorado, Usa, Gerald V. Sgro, John B. Poole, Jeffery R. Johansen
Diatom Species Composition And Ecology Of The Animas River Watershed, Colorado, Usa, Gerald V. Sgro, John B. Poole, Jeffery R. Johansen
Western North American Naturalist
The diatom flora of selected sites in the Animas River Watershed, San Juan County, Colorado, was studied. Eighty diatom taxa were identified from 10 sites: 8 sites on the Animas River and 1 site each on the Cement and Cascade tributaries. The sample diatom abundance was dominated by Achnanthidium minutissimum, Encyonema silesiacum, Aulacoseira distans, Hannaea arcus, and Diatoma mesodon. The presence of teratologic specimens of Fragilaria and Achnanthidium in the samples indicated the possibility of metals contamination. Diatom diversity was low and Lange-Bertalot pollution index scores indicated little organic pollution evidenced from diatom composition. There …
Moistened Seeds Increase Rodent Trap Success, John C. Tull, Michael W. Sears
Moistened Seeds Increase Rodent Trap Success, John C. Tull, Michael W. Sears
Western North American Naturalist
Seed moisture has been shown to influence the rates of seed cache removal by rodents. Although the precise mechanism is not known, this knowledge might prove useful in field applications. We examined whether moistened bait would increase trap success in desert rodent populations. We placed traps 15 m apart in grids within a 500-ha study area and randomly baited traps with either dry or moistened seeds. We found that traps baited with moistened seeds had 34.9% higher success than traps baited with dry seeds (n = 190, χ2 = 5.389, df = 1, P = 0.020). Our results …
New Distribution Records For The Querétero Dusky Rattlesnake Crotalus Aquilus (Viperidae), With Comments On Morphology And Habitat Use, Jesse M. Meik, Estrella Mociño Deloya, Kirk Setser
New Distribution Records For The Querétero Dusky Rattlesnake Crotalus Aquilus (Viperidae), With Comments On Morphology And Habitat Use, Jesse M. Meik, Estrella Mociño Deloya, Kirk Setser
Western North American Naturalist
We provide the 1st documented accounts of the Mexican endemic rattlesnake Crotalus aquilus from the state of México. The new records extend the known distribution of the species into a region where it may be sympatric with the superficially similar C. triseriatus. Because these taxa have previously been subject to some taxonomic confusion, we performed a preliminary morphological comparison using individuals of both species obtained from proximal localities. Our analyses support the supposition that these taxa are morphologically distinct. The new localities for C. aquilus are situated in high valleys that have been extensively modified by human settlement and …
Long-Term Vegetation Dynamics In A Cut Western Juniper Woodland, Jonathan D. Bates, Richard F. Miller, Tony Svejcar
Long-Term Vegetation Dynamics In A Cut Western Juniper Woodland, Jonathan D. Bates, Richard F. Miller, Tony Svejcar
Western North American Naturalist
Western juniper (Juniperus occidentalis spp. occidentalis Hook.) expansion in the northern Great Basin has reduced shrubsteppe productivity and diversity. Chainsaw cutting of western juniper woodlands is commonly applied to remove tree interference and restore sagebrush plant communities. Studies assessing understory response following cutting have been limited to early successional stages and have not evaluated the effects of western juniper debris on plant succession. Cutting western juniper produces a large amount of debris which is commonly left on site, occupying a significant portion of treated areas. This study evaluated successional dynamics spanning 13 years after western juniper cutting. Four 0.45-ha …
Discovery Of A Large Population Of The Rare Winter Stonefly Isocapnia Mogila Ricker In The Mad River, California (Plecoptera, Capniidae), Richard W. Baumann, Jonathan J. Lee
Discovery Of A Large Population Of The Rare Winter Stonefly Isocapnia Mogila Ricker In The Mad River, California (Plecoptera, Capniidae), Richard W. Baumann, Jonathan J. Lee
Western North American Naturalist
Isocapnia mogila, a rare winter stonefly, is found in good numbers in Humboldt County, California. In the 50 years since this species was described, very few specimens were recorded from only 4 sites in California and Oregon. Emergence seems to be higher in the fall and early winter than in the late winter and spring.
Unresolved Issues With The Assessment Of Multidecadal Global Land Surface Temperature Trends, Roger A. Pielke Sr., Christopher A. Davey, Dev Niyogi, Souleymane Fall, Jesse Steinweg-Woods, Ken Hubbard, Xiaomao Lin, Ming Cai, Young-Kwon Lim, Hong Li, John Nielsen-Gammon, Kevin Gallo, Robert Hale, Rezaul Mahmood, Stuart Foster, Richard T. Mcnider, Peter Blanken
Unresolved Issues With The Assessment Of Multidecadal Global Land Surface Temperature Trends, Roger A. Pielke Sr., Christopher A. Davey, Dev Niyogi, Souleymane Fall, Jesse Steinweg-Woods, Ken Hubbard, Xiaomao Lin, Ming Cai, Young-Kwon Lim, Hong Li, John Nielsen-Gammon, Kevin Gallo, Robert Hale, Rezaul Mahmood, Stuart Foster, Richard T. Mcnider, Peter Blanken
School of Natural Resources: Faculty Publications
This paper documents various unresolved issues in using surface temperature trends as a metric for assessing global and regional climate change. A series of examples ranging from errors caused by temperature measurements at a monitoring station to the undocumented biases in the regionally and globally averaged time series are provided. The issues are poorly understood or documented and relate to micrometeorological impacts due to warm bias in nighttime minimum temperatures, poor siting of the instrumentation, effect of winds as well as surface atmospheric water vapor content on temperature trends, the quantification of uncertainties in the homogenization of surface temperature data, …
Forest Health Impacts Of Bark Beetles, Dwarf Mistletoe, And Blister Rust In A Lake Tahoe Basin Mixed Conifer Stand, R. F. Walker, R. M. Fecko, W. B. Frederick, D. W. Johnson, W. W. Miller
Forest Health Impacts Of Bark Beetles, Dwarf Mistletoe, And Blister Rust In A Lake Tahoe Basin Mixed Conifer Stand, R. F. Walker, R. M. Fecko, W. B. Frederick, D. W. Johnson, W. W. Miller
Western North American Naturalist
Interactions between forest health variables and mensurational characteristics in an uneven-aged eastern Sierra Nevada mixed conifer stand were examined. The stand was located in the Lake Tahoe Basin on a site featuring a coarsely textured granitic soil and numerous rock outcrops. Its composition was dominated by California white fir (Abies concolor var. lowiana [Gord.] Lemm.), with Jeffrey pine (Pinus jeffreyi Grev. & Balf.) and sugar pine (Pinus lambertiana Dougl.) less prominent and incense-cedar (Libocedrus decurrens Torr.) and mountain alder (Alnus tenuifolia Nutt.) the most minor constituents. The majority of saplings and seedlings were white fir. …
Large Mixed-Species Dispersal Flights For Predatory And Scavenging Aquatic Heteroptera And Coleoptera, Northern Arizona, Usa, Lawrence E. Stevens, John T. Polhemus, Richard S. Durfee, Carl A. Olson
Large Mixed-Species Dispersal Flights For Predatory And Scavenging Aquatic Heteroptera And Coleoptera, Northern Arizona, Usa, Lawrence E. Stevens, John T. Polhemus, Richard S. Durfee, Carl A. Olson
Western North American Naturalist
We report 4 incidents of large (hundreds to hundreds of thousands of individuals) mixed-species flights of predatory and scavenging aquatic Heteroptera and Coleoptera. The events occurred on normal (mostly clear, calm) autumn 2005 and spring 2006 late afternoons near Flagstaff, Arizona. Flight days were either near the full moon or in advanced waning lunar periods. At least 18 species were involved in the flights, with as many as 16 species (7 species of Heteroptera in 3 families, 9 species of Coleoptera in 2 families) in a single flight. Heteroptera (especially from the family Corixidae) were 2–4 orders of magnitude more …
Home Range Size Of Black-Backed Woodpeckers In Burned Forests Of Southwestern Idaho, Jonathan G. Dudley, Victoria A. Saab
Home Range Size Of Black-Backed Woodpeckers In Burned Forests Of Southwestern Idaho, Jonathan G. Dudley, Victoria A. Saab
Western North American Naturalist
We examined home range size of Black-backed Woodpeckers (Picoides arcticus) in burned ponderosa pine (Pinus ponderosa) / Douglas-fir (Pseudotsuga menziesii) forests of southwestern Idaho during 2000 and 2002 (6 and 8 years following fire). Home range size for 4 adult males during the post-fledging period was 115.6–420.9 ha using the 95% fixed-kernel method, and 150.4–766.1 ha using the 100% minimum convex polygon method. Smoothed bootstrap estimates (95%) were 130.0–521.9 ha. Home range sizes were significantly smaller 6 years after fire than 8 years after fire. Each male had from 2 to 8 areas of …
Observations On An Association Between The Weevil Scaphomorphus Trivittatus (Say) And Two Astragalus Species On Selenium-Rich Soils In Carbon County, Utah, Gary R. Hooper, Boyd F. Holdaway
Observations On An Association Between The Weevil Scaphomorphus Trivittatus (Say) And Two Astragalus Species On Selenium-Rich Soils In Carbon County, Utah, Gary R. Hooper, Boyd F. Holdaway
Western North American Naturalist
The weevil Scaphomorphus trivittatus (Say) was found in close association with Astragalus praelongus var. elliseae (Rydb.) and Astragalus asclepiadoides (Jones) in selenium-containing soils in Carbon County, Utah. The weevils fed on roots of the Astragalus species and formed soil cocoons, which were attached to the tap roots. The weevils pupated and developed into adults in these cocoons over the fall and winter and then emerged in the spring. The plants and soil cocoons contained highly elevated levels of selenium compared to the soils. The weevils, in contrast, differed little from the soils in selenium content.
Variation In Ant Populations With Elevation, Tree Cover, And Fire In A Pinyon-Juniper–Dominated Watershed, Eugénie M. Montblanc, Jeanne C. Chambers, Peter F. Brussard
Variation In Ant Populations With Elevation, Tree Cover, And Fire In A Pinyon-Juniper–Dominated Watershed, Eugénie M. Montblanc, Jeanne C. Chambers, Peter F. Brussard
Western North American Naturalist
Climate change and fire suppression have facilitated expansion of pinyon-juniper woodlands into sagebrush-steppe ecosystems of the Great Basin, USA, resulting in a loss of biological diversity. To assess the effects of using prescribed fire in restoration efforts, ant abundance, species richness, and composition were examined pre- and post-burn along the elevation and tree cover gradients encompassed by a pinyon-juniper woodland in a central Nevada watershed. Ants were sampled using pitfall traps in 6 sites for the elevation study and in 2 sites for the tree cover study, representing paired burn and control sites in a randomized block design. Vegetation and …
The Scotopic Visual Sensitivity Of Four Species Of Trout: A Comparative Study, Russell B. Rader, Timberley Belish, Michael K. Young, John Rothlisberger
The Scotopic Visual Sensitivity Of Four Species Of Trout: A Comparative Study, Russell B. Rader, Timberley Belish, Michael K. Young, John Rothlisberger
Western North American Naturalist
We compared the maximum scotopic visual sensitivity of 4 species of trout from twilight (mesotopic) to fully dark-adapted vision. Scotopic vision is the minimum number of photons to which a fully dark-adapted animal will show a behavioral response. A comparison of visual sensitivity under controlled laboratory conditions showed that brown trout (Salmo trutta) and brook trout (Salvelinus fontinalis) had maximum scotopic thresholds (1.1 × 10−4 µmol · m−2s−1, ~0.005 lux) 2 times lower than rainbow trout (Oncorhyncus mykiss) and Snake River cutthroat trout (Oncorhynchus clarki bouvieri), which …
Modeling Aboveground Biomass Of Tamarix Ramosissima In The Arkansas River Basin Of Southeastern Colorado, Usa, Paul Evangelista, Sunil Kumar, Thomas J. Stohlgren, Alycia W. Crall, Gregory J. Newman
Modeling Aboveground Biomass Of Tamarix Ramosissima In The Arkansas River Basin Of Southeastern Colorado, Usa, Paul Evangelista, Sunil Kumar, Thomas J. Stohlgren, Alycia W. Crall, Gregory J. Newman
Western North American Naturalist
Predictive models of aboveground biomass of nonnative Tamarix ramosissima of various sizes were developed using destructive sampling techniques on 50 individuals and four 100- m2 plots. Each sample was measured for average height (m) of stems and canopy area (m2) prior to cutting, drying, and weighing. Five competing regression models (P < 0.05) were developed to estimate aboveground biomass of T. ramosissima using average height and/or canopy area measurements and were evaluated using Akaike's Information Criterion corrected for small sample size (AICc). Our best model (AICc = −148.69, ΔAICc = 0) successfully predicted T. ramosissima aboveground biomass (R2 = 0.97) …
Population Density, Biomass, And Age-Class Structure Of An Invasive Clam Corbicula Fluminea In Rivers Of The Lower San Joaquin River Watershed, California, Larry R. Brown, Janet K. Thompson, Karen Higgins, Lisa V. Lucas
Population Density, Biomass, And Age-Class Structure Of An Invasive Clam Corbicula Fluminea In Rivers Of The Lower San Joaquin River Watershed, California, Larry R. Brown, Janet K. Thompson, Karen Higgins, Lisa V. Lucas
Western North American Naturalist
Corbicula fluminea is well known as an invasive filter-feeding freshwater bivalve with a variety of effects on ecosystem processes. However, C. fluminea has been relatively unstudied in the rivers of the western United States. In June 2003, we sampled C. fluminea at 16 sites in the San Joaquin River watershed of California, which was invaded by C. fluminea in the 1940s. Corbicula fluminea was common in 2 tributaries to the San Joaquin River, reaching densities of 200 clams · m−2, but was rare in the San Joaquin River. Biomass followed a similar pattern. Clams of the same age …
There Is No Valid Record Of Cliff Chipmunk (Tamias Dorsalis) In The Sandia Mountains, New Mexico, Jennifer K. Frey
There Is No Valid Record Of Cliff Chipmunk (Tamias Dorsalis) In The Sandia Mountains, New Mexico, Jennifer K. Frey
Western North American Naturalist
A report of the cliff chipmunk (Tamias dorsalis) from the Sandia Mountains, New Mexico, was erroneous. The capture location of the specimen was actually the Rio Puerco drainage in Sandoval County. There are no records of the cliff chipmunk from the Sandia Mountains or elsewhere east of the Rio Grande.
Hay Piles Of The Mountain Beaver (Aplodontia Rufa) Delay Plant Decomposition, Richard Karban, Claire Karban, Jesse Karban
Hay Piles Of The Mountain Beaver (Aplodontia Rufa) Delay Plant Decomposition, Richard Karban, Claire Karban, Jesse Karban
Western North American Naturalist
Mountain beavers cache plants in neat piles above the ground near the entrances to their underground burrows, although the purpose of these hay piles remains controversial. We tested the hypothesis that drying plants in piles above ground may slow decay when the plants are stored underground. Predried plants and undried controls were placed in abandoned burrows. Plants that had been predried retained more green and decayed more slowly than undried controls. This experimental test supports the hypothesis that haying may extend the time during which plants are useful to mountain beavers.
Increased Willow Heights Along Northern Yellowstone's Blacktail Deer Creek Following Wolf Reintroduction, Robert L. Beschta, William J. Ripple
Increased Willow Heights Along Northern Yellowstone's Blacktail Deer Creek Following Wolf Reintroduction, Robert L. Beschta, William J. Ripple
Western North American Naturalist
Gray wolves (Canis lupus) were reintroduced into Yellowstone National Park in 1995–1996. In August 2004 we measured plant architecture of Geyer willow (Salix geyeriana) stems along three 100-m reaches of Blacktail Deer Creek in Yellowstone's northern elk (Cervus elaphus) winter range to evaluate changes in patterns of browsing and height growth following wolf reintroduction. Average browsing intensities (n = 3 stream reaches) of 100% in 1997 decreased to 0%–55% by 2003, whereas average stem heights of 25–74 cm in 1997 increased to 149–268 cm by 2003, indicating that willow height growth was inversely …