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Stephen F. Austin State University

Faculty Publications

2006

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Changes In Understory Vegetation Of A Ponderosa Pine Forest In Northern Arizona 30 Years After A Wildfire, Amanda L. Bataineh, Brian P. Oswald, Mohammad M. Bataineh, Hans M. Williams, Dean W. Coble Nov 2006

Changes In Understory Vegetation Of A Ponderosa Pine Forest In Northern Arizona 30 Years After A Wildfire, Amanda L. Bataineh, Brian P. Oswald, Mohammad M. Bataineh, Hans M. Williams, Dean W. Coble

Faculty Publications

Wildland fires can cause shifts in understory species composition and production. Many studies have examined short-term changes in understory vegetation following a wildfire; however, very few long term studies are available. The objective of this study was to examine changes in understory (herb and shrub) species composition and production since the 1972 Rattle Burn wildfire on the Coconino National Forest near Flagstaff, Arizona. Understory species composition and production were originally sampled in 1972, 1974, and 1980 and were re-sampled during July and August of 2002 and 2003 on 30 plots in each of four sites: high severity burn, low severity …

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Accuracy Assessment Of Land Cover Maps Derived From Multiple Data Sources, Daniel Unger, Hillary Tribby, Hans Michael Williams, I-Kuai Hung Mar 2006

Accuracy Assessment Of Land Cover Maps Derived From Multiple Data Sources, Daniel Unger, Hillary Tribby, Hans Michael Williams, I-Kuai Hung

Faculty Publications

Maximum Likelihood (ML) and Artificial Neural Network (ANN) supervised classification methods were used to demarcate land cover types within IKONOS and Landsat ETM+ imagery. Three additional data sources were integrated into the classification process: Canopy Height Model (CHM), Digital Terrain Model (DTM) and Thermal data. Both the CHM and DTM were derived from multiple return small footprint LIDAR. Forty maps were created and assessed for overall map accuracy, user's accuracy, producer's accuracy, kappa statistic and Z statistic using classification schemes from U.S.G.S. 1976 levels 1 and 2 and T.G.l.C. 1999 levels 2 and 4. Results for overall accuracy of land …

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As The Pmi Turns: A Tool For The Supply Chain Manager, Matthew Lindsey, Robert Pavur Feb 2006

As The Pmi Turns: A Tool For The Supply Chain Manager, Matthew Lindsey, Robert Pavur

Faculty Publications

Supply chain managers use the PMI, an index of business activity and proxy for the general business cycle, to obtain valuable information important to strategic managerial planning. This research explores a methodology to provide managerial insight into the general business cycle by tracking and forecasting cycle turns in the PMI. A regression model is developed based on inherent cycles in the PMI between 12 and 65 months to forecast turning points for the index and anticipate changes in the business cycle, which is superior to the more commonly used Box-Jenkins forecasting technique. Strategic planning using this knowledge allows management to …

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U.S. And Romanian Executive Mba Students: A Cross-Cultural Comparison, Ernest A. Capozzoli, David E. Gundersen, Marcel Duhaneanu Jan 2006

U.S. And Romanian Executive Mba Students: A Cross-Cultural Comparison, Ernest A. Capozzoli, David E. Gundersen, Marcel Duhaneanu

Faculty Publications

Currently, there are over 260 EMBA programs worldwide with approximately 180 programs resident in the United States. The number of programs available for EMBA students has increased competition for those students. One characteristic of this increased competition between EMBA programs is the addition of global initiatives to expose students to other cultures. Part of this global initiative has resulted in alliances and the establishment of working relationships between educational institutions. To facilitate and enhance the learning experience while in an EMBA program these alliances should consider the impact culture plays in shaping student expectations. This paper addresses the question of …

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Are We Teaching The Computer Application Skills Employers Need?, Susan Evans Jennings, S. Ann Wilson Jan 2006

Are We Teaching The Computer Application Skills Employers Need?, Susan Evans Jennings, S. Ann Wilson

Faculty Publications

Among the skills that employers have desired of new employees over the years, computer literacy still ranks near the top. As anyone who uses technology can attest, hardware and software changes are rapid and continual. The question arises as to whether the need for basic computer skills: word processing, spreadsheets, and databases have been replaced or augmented by the need for webpage design, programming, and desktop publishing skills?

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Impacts Of A Manure Composting Program On Stream Water Quality, A. Bekele, A. M.S. Mcfarland, A. J. Whisenant Jan 2006

Impacts Of A Manure Composting Program On Stream Water Quality, A. Bekele, A. M.S. Mcfarland, A. J. Whisenant

Faculty Publications

In February 2001, the Texas Commission on Environmental Quality (TCEQ) adopted a Total Maximum Daily Load (TMDL) for soluble reactive phosphorus (SRP) along the North Bosque River. Within this TMDL, dairy waste application fields were identified as the major nonpoint-source contribution of nutrients. In September 2000, a manure composting program was initiated that resulted in about 500,000 metric tons of dairy manure being hauled to composting facilities and exported from the watershed through December 2004. To evaluate the impact of the manure composting program on stream water quality, storm event mean concentrations of nutrients and total suspended solids were compared …

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Compatible Cubic-Foot Stem Volume And Upper-Stem Diameter Equations For Semi-Intensive Plantation Grown Loblolly Pine Trees In East Texas, Dean W. Coble, Keith Hilpp Jan 2006

Compatible Cubic-Foot Stem Volume And Upper-Stem Diameter Equations For Semi-Intensive Plantation Grown Loblolly Pine Trees In East Texas, Dean W. Coble, Keith Hilpp

Faculty Publications

The Max-Burkhart taper equation was used to develop compatible taper and volume equations for semi-intensive plantation grown loblolly pine (Pinus taeda L.) trees in East Texas. Semi-intensive plantations in East Texas are characterized by some form of mechanical site preparation, a burn, possibly chemical weed control, improved seedlings if planted after 1985, and, possibly, a midrotation thinning and/or fertilization. The equations in this study were compared with those of Lenhart et al. [Lenhart, J.D., T.L. Hackett, C.J. Laman, T.J. Wiswell, and J.A. Blackard. 1987. Tree content and taper functions for loblolly and slash pine trees planted on non-old field in …

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The Effect Of Carbon Revenues On The Rotation And Profitability Of Loblolly Pine Plantations In East Texas, Ching Hsun Huang, Gary D. Kronrad Jan 2006

The Effect Of Carbon Revenues On The Rotation And Profitability Of Loblolly Pine Plantations In East Texas, Ching Hsun Huang, Gary D. Kronrad

Faculty Publications

This study determined the profitability and financially optimal thinning and final harvest rotation of loblolly pine (Pinus taeda) managed exclusively for timber production or for dual products of timber production and carbon sequestration. The results suggest that 1) depending on landowner’s alternative rate of return, the inclusion of carbon revenues in forest management may shorten or prolong the optimal timber-carbon rotation length, compared to the optimal rotation that maximizes timber value only; 2) the effect of carbon revenues on the optimal rotation length and the percentage gain in soil expectation value is larger on low-productivity sites than on high-productivity sites, …

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A New Diameter Distribution Model For Unmanaged Loblolly Pine Plantations In East Texas, Young Jin Lee, Dean W. Coble Jan 2006

A New Diameter Distribution Model For Unmanaged Loblolly Pine Plantations In East Texas, Young Jin Lee, Dean W. Coble

Faculty Publications

A parameter recovery procedure for the Weibull distribution function based on four percentile equations was used to develop a diameter distribution yield prediction model for unmanaged loblolly pine (Pinus taeda L.) plantations in East Texas. This model was compared with the diameter distribution models of Lenhart and Knowe, which have been used in East Texas. All three models were evaluated with independent observed data. The model developed in this study performed better than the other two models in prediction of trees per acre and cubic-foot volume per acre (wood and bark, excluding stump) across diameter classes. Lenhart’s model consistently underestimated …

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Loblolly Pine Growth Response To Mid-Rotational Treatments In An Eastern Texas Plantation, Mohammad M. Bataineh, Amanda L. Bataineh, Brian P. Oswald, Kenneth W. Farrish, Hans Michael Williams Jan 2006

Loblolly Pine Growth Response To Mid-Rotational Treatments In An Eastern Texas Plantation, Mohammad M. Bataineh, Amanda L. Bataineh, Brian P. Oswald, Kenneth W. Farrish, Hans Michael Williams

Faculty Publications

The effects of mid-rotational treatments (herbicide, prescribed burn, combination of herbicide and burn, and fertilization) on growth of loblolly pine were evaluated. Five replicates were established in a split-plot experimental design with fertilizer treatments as the whole-plot factor and competition control treatments as the sub-plot factor. Growth response was measured (as change in diameter, total height, and volume) at 8 months and again 4 years after treatments were applied. Mid-rotational treatments failed to enhance diameter, height, and volume growth of loblolly pine. However, a small positive response of diameter growth to fertilization was detected. Height growth was not significantly affected …

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Tip Moth Control And Loblolly Pine Growth In Intensive Pine Culture: Four Year Results, David Kulhavy, Jimmie L. Yeiser, L. Allen Smith Jan 2006

Tip Moth Control And Loblolly Pine Growth In Intensive Pine Culture: Four Year Results, David Kulhavy, Jimmie L. Yeiser, L. Allen Smith

Faculty Publications

Twenty-two treatments replicated four times were applied to planted loblolly pine, Pinus taeda L., on bedded industrial forest land in east Texas for measurement of growth impact of Nantucket pine tip moth (NPTM), Rhyacionia frustrana Comstock, and effects on pine growth over 2 years. Treatments were combinations of Velpar®, Oust®, Escort®, and Arsenal® herbicides; and diammonium phosphate (DAP) fertilizer with treatments in 2000, in 2001, or in both years. Ten of the treatments were treated with Mimic timed with pheromone traps to reduce NPTM infestations. NPTM was controlled with the Mimic, and there was a small but significant increase in …

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Use Of A Generalized Sigmoid Growth Function To Predict Site Index For Unmanaged Loblolly And Slash Pine Plantations In East Texas, Dean W. Coble, Young-Jin Lee Jan 2006

Use Of A Generalized Sigmoid Growth Function To Predict Site Index For Unmanaged Loblolly And Slash Pine Plantations In East Texas, Dean W. Coble, Young-Jin Lee

Faculty Publications

A generalized sigmoid growth function was used in this study to model site index (SI) for unmanaged or lowintensity managed loblolly pine (Pinus taeda, L.) and slash pine (Pinus elliottii, Engelm.) plantations in east Texas. Schnute's growth function was fit to 11 ,367 and 5,040 height-age observations of loblolly and slash pine, respectively. These data were collected over a 20-year period from unmanaged pine plantations located across the east Texas region as a part of the East Texas Pine Plantation Research Project (ETPPRP). The fit model was used to derive Sl equations (25-year index age). The Sl equations apply to …

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Effects Of Flooding Regime, Mycorrhizal Inoculation And Seddling Treatment Type On First-Year Survival Of Nuttall Oak (Quercus Nuttallii Palmer), Hans Michael Williams, Virginia Burkett Jan 2006

Effects Of Flooding Regime, Mycorrhizal Inoculation And Seddling Treatment Type On First-Year Survival Of Nuttall Oak (Quercus Nuttallii Palmer), Hans Michael Williams, Virginia Burkett

Faculty Publications

Three different types of Nuttall oak ( Quercus nuttallii Palmer) seedlings were planted on floodprone, former cropland in Mississippi, Louisiana, and Texas. The three types of 1+0 seedlings planted at each site in January and February of 1995 were bareroot seedlings, seedlings grown in 164 square centimeters plastic containers, and containergrown seedlings inoculated with vegetative mycelia of Pisolithus tinctorious (Pers.) Coker and Couch. Seedlings at the Mississippi site were planted in a split-plot design at three different elevations, which provided three different natural flooding treatments. Seedlings at the other two sites were planted in a Latin square design at a …

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Effects Of Sower Type And Seedbed Density On Bareroot Seedling Morphology And Early Field Performance Of An East Texas Family Of Loblolly Pine, Hans Michael Williams, Tim Stewart Jan 2006

Effects Of Sower Type And Seedbed Density On Bareroot Seedling Morphology And Early Field Performance Of An East Texas Family Of Loblolly Pine, Hans Michael Williams, Tim Stewart

Faculty Publications

Precision sowing is commonly used at forest tree nurseries in order to improve the growing space uniformity of seedlings in the beds. Temple-Inland Forest Products Corporation recently purchased a vacuum sower and requested a study be conducted comparing their new sower with a drill sower on the morphological characteristics of loblolly pine (Pinus taeda L.) at lifting. The study was conducted in 2000 and repeated in 2001. The seed were sown using the two sower types to achieve four densities of 161 , 215, 269, and 323 seedlings/m2• Two half-sibling families were tested in 2000, and one halfsibling family was …

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Characteristics Of Bark Beetle Infestations In East Texas During A Period Of Low Southern Pine Beetle Activity, David L. Kulhavy Jan 2006

Characteristics Of Bark Beetle Infestations In East Texas During A Period Of Low Southern Pine Beetle Activity, David L. Kulhavy

Faculty Publications

The species composition nf southern pine bark beetle infestations was examined in east Texas in 1979, A total of 545 infestations were located in thirteen 18,000 acresurvey blocks. Ips spp, were observed in 98.9 of ihe infestations, with black turpentine beetles, Dendrnclonus lerebrans Olivier, present in 42.4 % ofthe infestations. Southern pine beetles, D. fronlulis Zimmemiann. were only observed in 11 infestations (2.0%), and were less abundant than other bark beetle species in these infestations. Almost 80% of the infestations were associated with a recognizable pre-disposing factor (lightning, fire, etc.). Most Infestations were small (less than six trees), though infestations …

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Genetic Variation Among Gravid Female American Woodcock In Eastern Texas During Winter (Abstract), R. Montaque Whiting Jr., Christopher E. Comer Jan 2006

Genetic Variation Among Gravid Female American Woodcock In Eastern Texas During Winter (Abstract), R. Montaque Whiting Jr., Christopher E. Comer

Faculty Publications

No abstract provided.

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Spatial Autocorrelation And Pseudoreplication In Fire Ecology, Amanda L. Bataineh, Brian P. Oswald, Mohammad M. Bataineh, Daniel Unger, I-Kuai Hung, Daniel Scognamillo Jan 2006

Spatial Autocorrelation And Pseudoreplication In Fire Ecology, Amanda L. Bataineh, Brian P. Oswald, Mohammad M. Bataineh, Daniel Unger, I-Kuai Hung, Daniel Scognamillo

Faculty Publications

Fire ecologists face many challenges regarding the statistical analyses of their studies. Hurlbert (1984) brought the problem of pseudoreplication to the scientific community’s attention in the mid 1980’s. Now, there is a new issue in the form of spatial autocorrelation. Spatial autocorrelation, if present, violates the traditional statistical assumption of observational independence. What, if anything, can the fire ecology community do about this new problem? An understanding of spatial autocorrelation, and knowledge of available methods used to reduce the effect of spatial autocorrelation and pseudoreplication will greatly assist fire ecology researchers.

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Population Trends Of Red-Cockaded Woodpeckers In Texas, Richard N. Conner, Daniel Saenz, D. Craig Rudolph Jan 2006

Population Trends Of Red-Cockaded Woodpeckers In Texas, Richard N. Conner, Daniel Saenz, D. Craig Rudolph

Faculty Publications

We tracked population trends of Red-cockaded Woodpeckers (Picoides borealis) in eastern Texas from 1983 through 2004. After declining precipitously during the 1980s, woodpecker population trends on federal lands (National Forests and Grasslands in Texas, but excluding the Big Thicket National Preserve) increased between 1990 and 2000, and have been stable to slightly decreasing over the past four years. Litigation against the U.S. Forest Service in the mid 1980s reversed a severe population decline, whereas litigation during the past 8 years hampered recovery efforts for the Red-cockaded Woodpecker. Red-cockaded Woodpecker populations on private and State of Texas lands have steadily declined …

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The Effects Of Sower And Bed Density On Bareroot Loblolly Pine Seedling Morphology And Early Height Growth, Hans M. Williams, Tim Stewart Jan 2006

The Effects Of Sower And Bed Density On Bareroot Loblolly Pine Seedling Morphology And Early Height Growth, Hans M. Williams, Tim Stewart

Faculty Publications

Precision sowing is commonly used at forest tree nurseries in order to improve the growing space uniformity of seedlings in the beds. Temple-Inland Forest Products Corporation recently purchased a vacuum sower and requested a study be conducted comparing their new sower with a drill sower on the morphological characteristics of loblolly pine (Pinus taeda L.) at lifting. The study was conducted in 2000 and repeated in 2001. The seed were sown using the two sower types to achieve four densities of 161, 215, 269, and 323 seedlings/m2. Two half-sibling families were tested in 2000, and one halfsibling family was …

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Invasion Of Exotic Earthworms Into Ecosystems Inhabited By Native Earthworms, P. F. Hendrix, G. H. Baker, M. A. Callaham Jr., G. A. Damoff, C. Fragoso, G. Gonzalez, S. W. James, S. L. Lachnicht, T. Winsome, X. Zou Jan 2006

Invasion Of Exotic Earthworms Into Ecosystems Inhabited By Native Earthworms, P. F. Hendrix, G. H. Baker, M. A. Callaham Jr., G. A. Damoff, C. Fragoso, G. Gonzalez, S. W. James, S. L. Lachnicht, T. Winsome, X. Zou

Faculty Publications

The most conspicuous biological invasions in terrestrial ecosystems have been by exotic plants, insects and vertebrates. Invasions by exotic earthworms, although not as well studied, may be increasing with global commerce in agriculture, waste management and bioremediation. A number of cases has documented where invasive earthworms have caused significant changes in soil profiles, nutrient and organic matter dynamics, other soil organisms or plant communities. Most of these cases are in areas that have been disturbed (e.g., agricultural systems) or were previously devoid of earthworms (e.g., north of Pleistocene glacial margins). It is not clear that such effects are common in …

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Winter Food Habits And Preferences Of Northern Bobwhites In East Texas, Donald R. Dietz, R. Montague Whiting Jr., Nancy E. Koerth Jan 2006

Winter Food Habits And Preferences Of Northern Bobwhites In East Texas, Donald R. Dietz, R. Montague Whiting Jr., Nancy E. Koerth

Faculty Publications

During late winter, 1994 and 1995, we investigated food habits and preferences of northern bobwhites (Colinus virginianus; hereafter, bobwhites) collected on forested lands in east Texas. Crops for bobwhites were collected from areas under 3 management regimes, namely intensively managed for bobwhites (QMA) (i.e., tree basal area reduced, annually burned, numerous multi-stage food plots, etc.), extensively managed for timber and wildlife (NBS) (i.e., burned every 3-5 years, scattered 2-stage food plots with corn feeders), and unmanaged for wildlife (i.e., burned every 5-7 years). With years pooled, partridge pea (Cassia fasciculata), Hercules club (Zanthoxylum clava-herculis), and pine (Pinus spp.) seeds, and …

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Geospatial Analysis Of Southern Pine Biome And Pollen Distribution Patterns In Southeastern, I-Kuai Hung Jan 2006

Geospatial Analysis Of Southern Pine Biome And Pollen Distribution Patterns In Southeastern, I-Kuai Hung

Faculty Publications

The spatial relationship between the parent plants and the distribution of their pollen rain is extremely important for the survival and health of natural ecosystems. In our modern societies there is a continuous and extensive need for wood products, therefore, the health and productivity of the forest ecosystems should be primary concerns for practitioners and researchers. Southern yellow pine forested biomes consist of four major pine species that have been extremely important as American timber sources and as income for the lumber industry. Currently, the intensive harvesting and exploitation of southern pine forests have created a series of highly fragmented …

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Spatial Analysis Of Historic Cemeteries: Using High Spatial Resolution Imagery As A Visual Aid, Richard E. Brooks, Daniel Unger, I-Kuai Hung Jan 2006

Spatial Analysis Of Historic Cemeteries: Using High Spatial Resolution Imagery As A Visual Aid, Richard E. Brooks, Daniel Unger, I-Kuai Hung

Faculty Publications

Oak Grove Cemetery, located within the City of Nacogdoches in Nacogdoches County Texas, is one of the earliest cemeteries in the county dating to the early 1800’s. Several historic Texans are interred within this cemetery including Thomas J. Rusk and Charles S. Taylor who was the great-great-grandfather of current United States Senator Kay Bailey Hutchison. Due to a fire circa 1910 many of the records for the original section of the cemetery were lost. In the summer of 2006, the GPS coordinates of each grave marker within the cemetery were plotted on a backdrop of 6 inch spatial resolution multispectral …

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Sex Differences In Jealousy In Response To Actual Infidelity, John E. Edlund, Jeremy D. Heider, Cory R. Scherer, Maria-Magdalena Farc, Brad J. Sagarin Jan 2006

Sex Differences In Jealousy In Response To Actual Infidelity, John E. Edlund, Jeremy D. Heider, Cory R. Scherer, Maria-Magdalena Farc, Brad J. Sagarin

Faculty Publications

The present studies address two criticisms of the theory of evolved sex differences in jealousy: (a) that the sex difference in jealousy emerges only in response to hypothetical infidelity scenarios, and (b) that the sex difference emerges only using forced-choice measures. In two separate studies, one a paper-and-pencil survey with a student sample and the other a web-based survey targeting a non-student sample, men and women showed significant sex differences in jealousy in response to actual infidelity experiences; men experienced more jealousy in response to the sexual aspects of an actual infidelity, whereas women experienced more jealousy in response to …

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Intestinal Microbial Ecology Of Broilers Vaccinated And Challenged With Mixed Eimeria Species, And Supplemented With Essential Oil Blends, E. O. Oviedo Rondon, M. E. Hume, C. Hernandez, S. Clemente-Hernandez Jan 2006

Intestinal Microbial Ecology Of Broilers Vaccinated And Challenged With Mixed Eimeria Species, And Supplemented With Essential Oil Blends, E. O. Oviedo Rondon, M. E. Hume, C. Hernandez, S. Clemente-Hernandez

Faculty Publications

Intestinal microbiota is an important component in the development of defense mechanisms in the gut mucosa. This project determined the dynamics of intestinal microbial communities (MC) of broilers vaccinated at first day of age with live oocysts of Eimeria species and fed diets supplemented with 2 specific essential oil (EO) blends, Crina Poultry (CP) and Crina Alternate (CA). Five treatments were analyzed: 1) unmedicated-uninfected (UU) control; 2) unmedicated-infected (UI) control; 3) vaccinated with Advent cocci-vaccine and without feed additive (COV) supplements; 4) vaccinated with Advent and supplemented with CP; and 5) vaccinated with Advent and supplemented with CA. The EO …

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Effects Of Feed Additives And Mixed Eimeria Species Infection On Intestinal Microbial Ecology Of Broilers, M. E. Hume, S. Clemente-Hernandez, E. O. Oviedo Rondon Jan 2006

Effects Of Feed Additives And Mixed Eimeria Species Infection On Intestinal Microbial Ecology Of Broilers, M. E. Hume, S. Clemente-Hernandez, E. O. Oviedo Rondon

Faculty Publications

Evaluation of digestive microbial ecology is necessary to understand effects of growth-promoting feed. In the current study, the dynamics of intestinal microbial communities (MC) were examined in broilers fed diets supplemented with a combination of antibiotic (bacitracin methylene disalicylate) and ionophore (Coban 60), and diets containing 1 of 2 essential oil (EO) blends, Crina Poultry (CP) and Crina Alternate (CA). Five treatments were analyzed: 1) unmedicated uninfected control; 2) unmedicated infected control; 3) feed additives monensin (bacitracin methylene disalicylate) + monensin (Coban 60; AI); 4) EO blend CP; and 5) EO blend CA. Additives were mixed into a basal feed …

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Relationships Among Arthropods, Herbaceous-Shrub Layer Vegetation, And Soil In An Early Succession Pine Stand., Brent Burt, Richard N. Conner, Saenz Daniel Jan 2006

Relationships Among Arthropods, Herbaceous-Shrub Layer Vegetation, And Soil In An Early Succession Pine Stand., Brent Burt, Richard N. Conner, Saenz Daniel

Faculty Publications

During spring and early summer, shrub- and herbaceous-level vegetation provides nesting and foraging habitat for many shrub-habitat birds. We examine relationships among arthropod biomass and abundance, foliage leaf surface area and weight, vegetation ground cover, soil characteristics, relative humidity, and temperature to evaluate what factors may influence arthropod food resources for birds.

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The Rotavirus Enterotoxin Nsp4 Directly Interacts With The Caveolar Structural Protein Caveolin-1, Rebecca D. Parr, Stephen M. Storey, Deanne M. Mitchell, Avery Mcintosh, Minglong Zhou, Kiran D. Mir, Judith M. Ball Jan 2006

The Rotavirus Enterotoxin Nsp4 Directly Interacts With The Caveolar Structural Protein Caveolin-1, Rebecca D. Parr, Stephen M. Storey, Deanne M. Mitchell, Avery Mcintosh, Minglong Zhou, Kiran D. Mir, Judith M. Ball

Faculty Publications

Rotavirus nonstructural protein 4 (NSP4) is known to function as an intracellular receptor at the endoplasmic reticulum (ER) critical to viral morphogenesis and is the first characterized viral enterotoxin. Exogenously added NSP4 induces diarrhea in rodent pups and stimulates secretory chloride currents across intestinal segments as measured in Ussing chambers. Circular dichroism studies further reveal that intact NSP4 and the enterotoxic peptide (NSP4114-135) that is located within the extended, C-terminal amphipathic helix preferentially interact with caveola-like model membranes. We now show colocalization of NSP4 and caveolin-1 in NSP4-transfected and rotavirus-infected mammalian cells in reticular structures surrounding the nucleus …

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A New Moustache Wasp In Dominican Amber, With An Account Of Apoid Wasp Evolution Emphasizing Crabroninae (Hymenoptera: Crabronidae), Daniel J. Bennett, Michael S. Engel Jan 2006

A New Moustache Wasp In Dominican Amber, With An Account Of Apoid Wasp Evolution Emphasizing Crabroninae (Hymenoptera: Crabronidae), Daniel J. Bennett, Michael S. Engel

Faculty Publications

A new, extinct species of the wasp genus Lindenius (Crabroninae: Crabronini: Crabronina) is described and figured from two exquisitely preserved specimens discovered in Early Miocene Dominican amber. Lindenius paleomystax, new species, represents the first record for the tribe Crabronini in Dominican amber and the southernmost record for the genus in the New World. The unique locality and habitat data begin to reveal a more complicated natural history for the genus than that suggested by Recent taxa alone. A checklist of fossil apoid wasps in amber is provided and the new species is discussed within the context of an overview …

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Nest-Site Selection In The Eastern Box Turtle, Terrapene Carolina Carolina, In Illinois [Abstract], Beth A. Flitz, Stephen J. Mullin Jan 2006

Nest-Site Selection In The Eastern Box Turtle, Terrapene Carolina Carolina, In Illinois [Abstract], Beth A. Flitz, Stephen J. Mullin

Faculty Publications

No abstract provided.

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