Life Sciences Commons^™

Using Arcpy To Automate Making Thematic Map Books: Two Cases, Yanli Zhang, Daniel Unger, Jason Grogan, Brian P. Oswald, John Lanham

Faculty Publications

No abstract provided.

Sfa Gardens Newsletter, Fall 2012, Sfa Gardens, Stephen F. Austin State University

SFA Gardens Newsletters

No abstract provided.

Sfa Gardens Newsletter, Summer 2012, Sfa Gardens, Stephen F. Austin State University

SFA Gardens Newsletters

No abstract provided.

Sub-Pixel Classification Of Forest Cover Types In East Texas, Joey Westbrook, I-Kuai Hung, Daniel Unger, Yanli Zhang

Faculty Publications

Sub-pixel classification is the extraction of information about the proportion of individual materials of interest within a pixel. Landcover classification at the sub-pixel scale provides more discrimination than traditional per-pixel multispectral classifiers for pixels where the material of interest is mixed with other materials. It allows for the un-mixing of pixels to show the proportion of each material of interest. The materials of interest for this study are pine, hardwood, mixed forest and non-forest. The goal of this project was to perform a sub-pixel classification, which allows a pixel to have multiple labels, and compare the result to a traditional …

Living The Tasty Life: Cooking For People With Diabetes, Sarah Feye, Carrie Flowers, Amanda Johnson

Undergraduate Research Conference

To compile, format, distribute and organize high quality, affordable and easy-to-understand recipes to the greater East Texas Area in conjunction with East Texas Community Health Services, Inc. of Nacogdoches, TX.

To address the following Didactic Program in Dietetics student learning outcomes required by the Accreditation Council for Education in Nutrition and Dietetics: KR 2.1 a, b; KR 4.1 a, and KR 4.2 b.

Health: Helping Employees Alter Life Through Health, Natalie Strabala, Alyssa Rains

Undergraduate Research Conference

To create a healthier and happier company environment and network as a whole. Our employees will become more focused and goal-oriented driven. The overall morale of the company will be higher, leading Biss Enterprises to even more success.

Analysis Of Zinc And Copper In Foods, Merlly Zavala

Undergraduate Research Conference

Deficiencies in vitamins and calcium have always been known and a remedy for it has always been around. The deficiency of copper (Cu) and zinc (Zn) are not very popular and some people do not understand how important the two metals are for one’s health. If one tends to encounter such deficiency the goal is to give foods that contain these metals in order to add to the diet. In this study, various foods were analyzed for Cu or Zn concentration levels using absorptions spectrophotometer Shimadzu AA-6800 flame. The samples were crushed, digested with nitric acid, and then analyzed through …

Differentiation Of Capsicum Species Via Protein Extraction And Sds-Page Analysis: A Two-Day Experiment For Undergraduate Biochemistry Laboratories, Trey Polvadore, Brittney P. Cooper, Michele R. Harris

Undergraduate Research Conference

The Capsicum genus is comprised of more than 200 varieties of pepper plant that collectively represent only five cultivated spices. As a result of extensive cross-breeding, an 88% similarity in protein coding DNA has developed. While this has made species determination based solely on physical appearance all but impossible, the 12% difference in protein coding DNA has led to subtle differences in translated protein. SDS-PAGE analysis facilitates the generation of protein banding patterns that, after careful analysis, was used to differentiate one variety of pepper from another. This project was used to distinguish between pepper plant species and was carried …

A Biomechanical Analysis Of The Gymnastics Cartwheel Using Dartfish Motion Analysis Software, Keilea Bullard

Undergraduate Research Conference

The biomechanical analysis required videotaping two subjects performing the cartwheel to the best of their ability. Strict protocols were followed to ensure the analysis was accurate. In order to measure distances in the Dartfish program, an object of known length had to be recorded. Subjects were asked to hold a scaling rod for ten seconds before beginning their trials. Subjects recorded four trials each and all data was imported into the Dartfish program. Average trials for both subjects were chosen to be analyzed extensively for strengths, weaknesses and most importantly the overall biomechanics of the cartwheel. The subjects’ video was …

Sfa Gardens Newsletter, Spring 2012, Sfa Gardens, Stephen F. Austin State University

SFA Gardens Newsletters

No abstract provided.

Differences In Spectral Sensitivity Within And Among Species Of Darters (Genus Etheostoma), Jennifer M. Gumm, Ellis R. Lowe, Tamra C. Mendelson

Faculty Publications

We examined variation in the visual system both within and among seven species of darters, colorful freshwater fishes of the genus Etheostoma. Using microspectrophotometry, we found that darters possess rod photoreceptor cells, single cone photoreceptor cells containing middle wavelength sensitive (MWS) visual pigments, and twin photoreceptor cells containing (LWS) visual pigments. No variation in peak sensitivity was detected among species or individuals in the rod class. In the MWS class, significant variation was detected among species and a strong statistical trend suggests differences among individuals. By contrast, all differences in the LWS class could be attributed to variation among individuals. …

Etpprp Accomplishments - Fall 2012, The East Texas Pine Plantation Research Project, Arthur Temple College Of Forestry And Agriculture

Accomplishments and History

"The ETPPRP is a long-term comprehensive research program investigating the factors affecting the management of loblolly and slash pine plantations in East Texas. The Arthur Temple College of Forestry and Agriculture at Stephen F. Austin State University conducts the ETPPRP in coordination with private landowners, primarily Timber Investment Management Organizations (TIMOs) and Real Estate Investment Trusts (REITs)."

An Annual Tree Survival And Diameter Growth Model For Loblolly And Slash Pine Plantations In East Texas, Dean W. Coble, Quang V. Cao, Lewis Jordan

Faculty Publications

An annual growth model that predicts individual tree survival and diameter growth was developed for loblolly pine (Pinus taeda) and slash pine (Pinus elliottii) trees in East Texas as a function of individual-tree diameter, plantation age, basal area per acre, dominant height, quadratic mean diameter, and presence of fusiform rust (Cronartium quercuum [Berk.] Miyabe ex Shirai f. sp. fusiforme). Data from 104,035 loblolly pine and 37,515 slash pine individual tree observations collected on a 3-year cycle from 174 loblolly pine and 80 slash pine permanent plots located in plantations throughout East Texas were used in this study. The survival equation …

Effects Of Treatments Using Mat-28 For Pine Site Preparation, Andrew W. Ezell, Jimmie L. Yeiser, Pat Minogue

Faculty Publications

Site preparation for pine plantation establishment continues to be the principal use of herbicides in the South. Due to the timing of the work and the cost involved, these applications are critical in both biological and economic terms. In an effort to improve performance in both considerations, a study was undertaken to evaluate a number of herbicide compounds in site preparation applications. A total of 12 treatments were applied with three replications on three sites in a randomized complete block design. Applications were completed in mid-July using a total spray volume of 15 gpa. Treatments included MAT-28 applied alone at …

Use Of Aminocyclopyrachlor For Forestry Site Preparation In The Southeastern U.S., Andrew W. Ezell, Ronnie Turner, Jimmie L. Yeiser

Faculty Publications

It is not often that new chemistry is made available for use in forestry applications. Aminocyclopyrachlor is a new active ingredient which may have usefulness as a forestry herbicide. Research using this active ingredient began in 2005 and is continuing in university projects across the South. Both hardwood control efficacy and pine tolerance have been evaluated in these trials. A total of 60 different treatments have been evaluated for use in site preparation applications in Mississippi and Texas. This herbicide is effective on a number of species including some invasive exotics. It will probably not be a stand alone treatment, …

Short-Term Carbon Partitioning Fertilizer Responses Vary Among Two Full-Sib Loblolly Pine Clones, Jeremy P. Stovall, John R. Seiler, Thomas R. Fox

Faculty Publications

We investigated the effects of fertilizer application on the partitioning of gross primary productivity (GPP) between contrasting full-sib clones of Pinus taeda (L.). Our objective was to determine if fertilizer growth responses resulted from similar short-term changes to partitioning. A modeling approach incorporating respiratory carbon (C) fluxes, soil CO2 efflux (FS), and biomass was applied to a factorial design with two clones, fertilizer and control treatments, and four sequential monthly harvests of seedlings planted in a greenhouse. Partitioning was integrated over 121 days to above, belowground, and total net primary production (ANPP + BNPP = NPP), total belowground C flux …

Controlling Roadside Noncrop Pine In Se Oklahoma Using Selected Glyphosate Formulations With And Without Li 700 And Milestone Vm Plus, Jimmie L. Yeiser, M. Finke, Jason Grogan

Faculty Publications

Noncrop pine control is a major issue confronting managers of openings along roadsides and in clearcuts.Herbicides containing glyphosate are commonly used for pine control. Traditionally, managers have applied 4 quarts product/acre with inconsistent results. LI 700 is a penetrating non-ionic surfactant that contains lecithin. Selected treatments of Makaze, Accord Concentrate and Accord XRT II, some with and without LI 700 or Milestone VM Plus, were tested for control of loblolly (Pinus taeda L) and shortleaf (P. echinata Mill) pines in southeastern OK. Herbicides were applied at 15 GPA on 10-Jun-08. Plots were evaluated for control on 14- Jun-09. Three glyphosate …

Screening Cut-Stump Control Of Chinese Tallowtree, Sweetgum And Yaupon With Aminocyclopyrachlor, Jimmie L. Yeiser, M. Link, Jason Grogan

Faculty Publications

Aminocyclopyrachlor (MAT28) was investigated for the potential control of unwanted woody rootstocks of Chinese tallowtree (Triadica sebifera), sweetgum (Liquidambar styraciflua), and yaupon (Ilex vomitoria). A cutstump application of MAT28+Brush and Basal Oil by Helena was tested against standard treatments: (1) MAT28 2.5%, (2) MAT28 5%, (3) MAT28 10%, (4) MAT28 15%, (5) Garlon 4 Ultra 30%, (6) Garlon 4 Ultra+Stalker 20+1%, (7) MAT28+Stalker 10+1% and (8) untreated check. Herbicides were applied on February 4, 2009. Stems were severed with a chainsaw and herbicide applied immediately and sufficiently to thoroughly wet the surface, edges and top 2 inches of the stump. …

Nest Success And Hatchling Survival Of American Alligators Within Inland Wetlands Of East Texas, Warren C. Conway, Gary Calkins, David Saalfeld

Faculty Publications

Because of liberalization of American alligator (Alligator mississippiensis) harvest management in Texas, estimates of nest success and hatchling survival for inland populations are essential for long-term, sustainable population and harvest management. To date, few studies have examined American alligator nest success and hatchling survival. We initiated a 3-year study from 2006 to 2008 to document alligator nest success and hatchling survival within several wetlands in east Texas. From June 2006 to August 2008, we located 30 nests from 3 wetlands within east Texas, where overall nest success was 44.2% (95% CI=25.1– 63.1%), irrespective of year. Nest circumference and day during …

Snowy Plover Nest Site Selection, Spatial Patterning, And Temperatures In The Southern High Plains Of Texas, David Saalfeld, Warren C. Conway, William P. Johnson, David A. Haukos

Faculty Publications

Snowy plover (Charadrius nivosus) populations have declined throughout their range, in part because of habitat degradation and poor nest success, making information regarding regionally specific nest site selection and spatial patterns important when considering habitat conservation and management guidelines. We determined nest site selection characteristics (n=80) and examined spatial patterns (n=215) of snowy plover nests in saline lakes in the Southern High Plains (SHP) of Texas. At 104 nests, we examined the influence of substrate type on nest temperatures and heat mitigation. Snowy plover nests were more likely to be found near an object, on pebble substrate, and with fewer …

Increased Uniformity By Planting Clones Will Likely Have A Minimal Effect On Inventory Costs, Curtis L. Vanderschaaf, Dean W. Coble, David B. South

Faculty Publications

When conducting inventories, reducing variability among tree diameters, heights, and ultimately volumes or biomass, can reduce the number of points/plots needed to obtain a desired level of precision. We present a simple analysis examining the potential reduction in discounted inventory costs when stand variability is decreased (via improved genetics and intensive management on a uniform soil). Sampling time might be reduced if the coefficient of variation in point volume/biomass estimates is reduced to 10% (versus 25% for genetically diverse stands). However, if this level of variability could be achieved (and depending on the desired probability and allowable percent error) discounted …

A Chronicle Of Changing American Attitudes Toward Wetlands, Matthew W. Mcbroom

Faculty Publications

No abstract provided.

Stereo Photo Series For Estimating Natural Fuels In The Netherlands, Volume I: Veluwe Region, Brian P. Oswald, Cathelijne Stoof

Faculty Publications

The photo series are collections of photos and associated field data representing a region of The Netherlands. Volume I includes vegetation types in the Veluwe Region, including Heather, Grasslands, Beech/Hardwoods, Scots Pine, and Douglas-fir. Volume 2 includes dune vegetation types on the island of Texel, plus a site on the mainland near Haarlam. For each vegetation type, sites were sampled with varying fuel loads. The description of the sites consists of a wide-angle site photo, supplemented with field data on the various fuel loads and vegetative layers. The photo series is an important ecological tool to assess landscapes by analyzing …

Identifying Well Pads In The Haynesville Shale Region, Louisiana And Texas, With Digital Imagery, Darinda Dans, Daniel Unger, Kenneth W. Farrish, I-Kuai Hung

Faculty Publications

The Haynesville Shale is an underlying rock formation in northwest Louisiana and northeast Texas that contains vast quantities of natural gas. With new technology has come the ability to extract more natural gas from one of the largest gas deposits in the United States. With increased production, increased change in the local ecosystem will occur. It is necessary to examine oil and gas exploration effects on the local ecosystem due to changes in land cover, such as habitat loss and increased soil erosion. Remotely sensed imagery were utilized to ascertain the use of various digital image processing techniques to determine …

The Mapping Of Composite Pollen From Point Sampled Data And Cartographic Generalization, Peter P. Siska, I-Kuai Hung, Vaughn M. Bryant Jr.

Faculty Publications

Pollen grains are microgametophytes produced by angiosperm and gymnosperm plants. They are responsible for transporting genetic material and carrying out fertilization. The study of pollen has numerous practical applications such as plant biodiversity, paleoclimatology, archaeology, allergy studies, the study of nectar sources in honey (melissopalynology), searching for sources of petroleum, and more recently, using pollen as a trace evidence component in forensics. Once pollen grains become airborne, their dispersal is controlled by a number of physical factors that determine the deposition distance from their source area. The purpose of this work is to study spatial pattern of composite pollen in …

6th Lone Star Regional Native Plant Conference, Trey Anderson, David Creech, Greg Grant, Matthew W. Mcbroom, James Van Kley, Hans M. Williams

Lone Star Regional Native Plant Conference

No abstract provided.

Small Flowering Trees Deserving Greater Use, David Creech

SFA Gardens Publications

Small flowering trees are gaining in popularity for several reasons. First, small 3 to 6 m (10 to 20 ft) trees fit modern landscapes where yards are small. Secondly, there is a growing and somewhat justified fear of urban trees that get huge with time. In an age of hurricanes, tornadoes, wild weather and predictions by climatologists of more of the same, it is only reasonable to embrace a little fear of large trees. Part of climate change ― is violence. Crushed homes, vehicles, and power lines are becoming nightly fare on our national news. Small flowering trees suddenly look …

Sfa Gardens Newsletter, Winter 2012, Sfa Gardens, Stephen F. Austin State University

SFA Gardens Newsletters

No abstract provided.

The Mcintire-Stennis Cooperative Forestry Research Program: The Driving Force Of Sustainable Forestry, Steven H. Bullard

Faculty Presentations

The McIntire-Stennis (M-S) Cooperative Forestry Research Program has provided fundamental support for creating and strengthening forestry research and graduate training efforts at colleges and universities across the nation for nearly 50 years. M-S funding has helped produce thousands of forestry scientists and other research professionals, and M-S–supported research has provided critical basic understanding and applied solutions to extend the benefits that flow from forests and related rangelands across the nation over time. The 1962 legislation that created the M-S program authorized funding of up to one-half of the funds appropriated for federal forestry research conducted directly by the USDA. Throughout …

New Species Of Macrocephalic Halictine Bees (Hymenoptera: Halictidae) [Abstract], Michael S. Engel, Ismael A. Hinojosa-Diaz, Daniel J. Bennett

Faculty Publications

No abstract provided.