Social and Behavioral Sciences Commons^™

The Pleistocene Glacial Record At Two Quarries In Decatur County, Iowa, Keith E. Schilling, Robert A. Stewart

Journal of the Iowa Academy of Science: JIAS

The Pleistocene stratigraphy and sedimentology of two quarry exposures near Grand River and Decatur City in Decatur County, Iowa document a sequence of Pleistocene sediments overlying striated Pennsylvanian limestone which represent at least two pre-Illinoian glacial advances into the ancestral Grand River valley. Two pre-Illinoian diarnictons separated by a clast pavement were observed at the Decatur City quarry; a single diarnicton was present at the Grand River quarry. At both quarries, the diarnictons exhibit comparable lithologic properties and are genetically interpreted as basal tills. The pre-Illinoian tills are tentatively correlated with the Alburnett Formation in eastern Iowa, primarily on the …

Competitive Abilities Of Oat And Barley Varieties, B. D. Mcbratney, K. J. Frey

Journal of the Iowa Academy of Science: JIAS

Competitive ability of a plant genotype reflects its capacity to yield well and compete successfully for light, moisture, and nutrients when grown with similar or dissimilar genotypes. This trait is important to plant breeding because most breeding populations are propagated in mixed or competitive stands. The objective of this study was to assess the competitive abilities of oat and barley genotypes.

Two sets of oat and barley genotypes were evaluated for competitive ability. Set I consisted of five oat varieties, and Set II consisted of two barley and three oat varieties. Neither set, when averaged, showed over- or under-compensation with …

The Early History And Recent Trends In Iowa Herpetology, Reeve M. Bailey, James L. Christiansen

Journal of the Iowa Academy of Science: JIAS

Herpetological exploration of Iowa began in 1823 with Long's expedition to the Rocky Mountains. From that time until an 1892 publication by Osborn based on Iowa specimens, herpetological research in the state was minor and incidental. Several significant reports appeared after that date involving analysis of Iowa specimens and from 1938 to 1944 a major base-line collection of the amphibians and reptiles of Iowa was established. Studies after that time have added a few species to Iowa’s known herpetofauna but recently have concentrated not only on composition of the fauna and distribution, but emphasized population changes, ecological relationships, and better …

Some Significant Iowa Plant Records From The Herbarium Of University Of Nebraska At Omaha, Barbara L. Wilson

Journal of the Iowa Academy of Science: JIAS

Though the herbarium of University of Nebraska at Omaha (OMA) lies outside the state boundaries, it contains a number of interesting western Iowa records. Publicizing these and other little-known Iowa plant records is especially important at this time, since a checklist of Iowa's vascular plants, compiled by Eilers and Roosa, is nearing completion.

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Community Dynamics Of Phytoplankton In A Typical Navigation Pool In The Upper Mississippi River, Theodore R. Lange, Ronald G. Rada

Journal of the Iowa Academy of Science: JIAS

In 1986 we studied phytoplankton in the mid-reaches of Pool 8, which is a typical navigation pool of the Upper Mississippi River. During years of normal discharge, the areas studied usually become distinctly different from each other (ranging from free-flowing river to stagnant marsh) as the ice-free season progresses. These differences among sites did not occur during our study because the discharge into Pool 8 during 1986 was about 85% greater than the 10-yr mean discharge (1972-1982). Moreover, differences among areas were not observed with respect to physical and chemical characteristics such as photic zone depth, temperature, dissolved nitrogen and …

Habitat And Distribution Of Plants Special To Iowa's Driftless Area, William P. Pusateri, Dean M. Roosa, Donald R. Farrar

Journal of the Iowa Academy of Science: JIAS

A portion of the Upper Midwest escaped glaciation during the two most recent glacial epochs. This "Driftless Area", also known in Iowa as the "Paleozoic Plateau", comprises some 39,000 square kilometers (15,000 square miles) in the states of Illinois, Iowa, Minnesota, and Wisconsin. Today the highly dissected terrain provides a variety of habitats supporting a rich and diverse flora including many plants special to the area, i.e., principally, in Iowa, restricted to the Driftless Area. These special plants have received much attention, often having been discussed as possible relicts from past floras. However, distribution data for these species beyond the …

Cover - Table Of Contents

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Front Matter

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Mass Selection For Adaptation In Antigua Maize (Zea Mays L.) Composite, F. M. San Vicente, A. R. Hallauer

Journal of the Iowa Academy of Science: JIAS

Tropical maize (Zea mays L.) germplasm has had limited use in temperate areas because of photoperiod sensitivity. Antigua germplasm from the island Antigua was introduced co Iowa because of its resistance to important pests of maize and its heterosis exposed m crosses with ocher tropical varieties. Mass selection procedures were used to adapt the Antigua Composite germplasm co Iowa conditions. After. Six cycles of mass selection for earlier silk emergence, the selected Antigua Composite flowered 17 days earlier than the original composite. Grain yield and ocher agronomic traits of the adapted scram of Antigua were similar co chose of adapted …

Well-Water Quality Data From A Volunteer Sampling Program: Audubon County, Iowa, L. S. Seigley, G. R. Hallberg, P. R. Walther, G. A. Miller

Journal of the Iowa Academy of Science: JIAS

This study presents the results of a countywide volunteer sampling of private well-water. Volunteers collected 231 well-water samples in Audubon County for nitrate-nitrogen (NO₃,-N) and total coliform bacteria analyses during September 1988. Questionnaires were completed at all sites to document well construction, age and depth of well, well placement relative to septic system, barnyard/feedlots, location of chemical mixing/tank rinsing, and presence of abandoned wells.

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Evaluation Of Passive Integrated Transponders As A Marking Technique For Turkey Poults, Dewaine H. Jackson, William H. Bunger

Journal of the Iowa Academy of Science: JIAS

Injectable, passive integrated transponders (PITs) were evaluated as a marking technique for newly hatched wild turkey (Meleagris gallopavo Linnaeus) poults. Seven of 12, 3-day-old domestic turkey poults received a PIT implant and a wing tag. A control group of five poults received only a wing tag. Two subcutaneous implant sites were evaluated, along the right side of the neck and in the area between the right inner thigh and breast. One of7 PITs failed or was expelled during the first week. Four scanning errors, in which the PIT was present yet not detected during the initial scanning attempt, occurred in …

Range Expansion Of The Great-Tailed Grackle In The 1900s, James J. Dinsmore, Stephen J. Dinsmore

Journal of the Iowa Academy of Science: JIAS

In 1900, the range of the Great-tailed Grackle extended north of the Mexican border only into Texas. Since then, it has expanded its range greatly. It now nests in 14 states and has strayed to an additional eight states and three Canadian provinces. Much of this expansion has occurred since 1960. Great-tails often stray far from their normal range, especially in spring. Most of these strays are single individuals. In states where they have nested, breeding birds typically reach the state a few years after the first reports of the species. Great-tailed Grackles do well in a variety of human …

Journal Of The Iowa Academy Of Science Submission Form And Instruction Sheet

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Annual Report Of The Iowa Academy Of Science, 1992-93, Paul E. Rider

Journal of the Iowa Academy of Science: JIAS

Starting in 1976, annual reports have served as a continuing record of the activities of the Iowa Academy of Science. These augment a 100 year history of the Academy which was written in the centennial year of 1975. This report covers the period from July 1, 1992 to June 30, 1993. It is based on the official records of the Academy (committee reports, Board minutes, correspondence) as well as the recollections, impressions and thoughts of the author.

Back Cover

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Cover - Table Of Contents

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Mutant Weeds Of Iowa: V. S-Triazine Resistant Setaria Faberi Herrm, R. Thornhill, J. Dekker

Journal of the Iowa Academy of Science: JIAS

S-triazine resistance in giant foxtail (Setaria faberi Herrm.) has been reported previously, but not in the midwestern U.S. corn belt or Iowa. A study was conducted using a chlorophyll fluorescence assay to confirm the presence of resistance in one S. faberi population in Iowa. Variable chlorophyll fluorescence assays confirmed that a population of this species with this type of resistance exists in Iowa. This is the first report of s-triazine resistance in S. faberi, and the fourth species with this type of herbicide resistance, found in an Iowa agroecosystem.

Back Cover

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Front Matter

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

A Gravity Investigation Of The Fayette Structural Zone And Surrounding Area, Northeast Iowa, Richard L. Kellogg, Christopher Meinen

Journal of the Iowa Academy of Science: JIAS

A gravity survey was conducted over approximately 2600 square kilometers of northeast Iowa. The survey was undertaken to provide detailed gravity coverage at approximately one mile intervals and to investigate the sources of gravity anomalies in the study area. An additional objective was to verify with gravity data the presence of the Fayette Structural Zone, previously identified on the basis of magnetic linears. Four hundred and twenty-seven gravity stations were occupied and data from these stations combined with extant data from the Geological Survey Bureau of the Iowa Department of Natural Resources to produce the gravity interpretation. A Bouger gravity …

Index For Volume 100

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Public Policy & Economic Justifications For Renewable Energy, Dean Eyler

Presidential Scholars Theses (1990 – 2006)

We lie at a unique place in history, one where humanity's drive to industrialize has created an environmental crisis that may threaten the very existence of the planet. The new challenges posed by environmental crises are becoming shockingly apparent. Scientists are discovering, and illustrating to policy-makers, new ways in which we are destroying the earth and its surrounding atmosphere. Although these kinds of revelations are by no means new, the scale of destruction in these scenarios is immensely greater. Warming of the atmosphere due to the greenhouse effect, depletion of the ozone layer, destruction of forests, acid rain, air pollution, …

The Effects Of The Presidency On The Epa, Patrick Cook

Presidential Scholars Theses (1990 – 2006)

This paper is a study of how the Presidency affects, and has affected, the Environmental Protection Agency. The EPA is a relatively new agency having only been created in 1970. Therefore, I have focused my research on the individual administrations from President Nixon to President Reagan. I shall present to you trends in presidential policy towards the Environmental Protection Agency, and how they have shaped the Agency, its direction, and its effectiveness.

To place this research in context, I will begin by presenting a history of the Environmental Protection Agency. This survey will focus on major events and important pieces …

I Is For Iowa: An Alphabet Book About Iowa, Mary Ann Gensicke

Graduate Research Papers

I is for Iowa is a historically based alphabet book written for the purpose of introducing young children to facts about the state of Iowa. Each alphabet letter presents a geographical feature or location, a past personality, an industry, a designated state symbol or a significant historical event. The text is written for the comprehension of six to ten year old children. The words and pictures work together to highlight historical facts which are representative of the state's diversity and heritage. The book is designed to stimulate language development and to help young children become interested in reading and in …

Advances In Biomolecule Analysis: Ftms Of Macromolecules, Curtiss D. Hanson, Ira M. Simet, Suzanne R. Smith

Journal of the Iowa Academy of Science: JIAS

The development of Fourier transform ion cyclotron resonance (FT-ICR) as an analytical technique has opened new avenues to the analysis of high molecular weight biomolecules. Because mass analysis is based on a detection of a frequency, it is possible to obtain high resolution mass measurements without sacrificing sensitivity. The unique ability to analyze high mass ions is based in the design of a passive ExB ion trap. Although in the past, field inhomogeneities have limited this technique, recent developments in both trap designs and excitation techniques have resulted in major improvements in both sensitivity and resolution.

Picture Storybooks For Speech Communications Curriculum And Extracurricular Activities: An Annotated Bibliography, Del Brink

Graduate Research Papers

High school speech instructors frequently use picture storybooks in their curriculum. Picture storybooks differ from illustrated storybooks and picture books because they are the only type of the three that includes a balanced union between text and illustrations. An observation made at a high school speech contest in Iowa was the impetus for the formation of a bibliography of picture storybooks suitable for speech contest work. The researcher located, read, annotated, and categorized books reviewed in The Horn Book Magazine between 1989 and 1992. Of the 497 books read, 363 formed a bibliography of picture storybooks divided among these categories: …

The Effects Of Book Location On The Selection Of First Readers By Elementary Students, Tracy Merfeld

Graduate Research Papers

167 kindergarten, first and second graders at Garfield Elementary School in Boone, Iowa, and 470 first reader books were used to investigate whether justification can be given to shelving first reader books in a separate section. An increase in the number of charges of first reader books might demonstrate a need of students to have this type of material readily accessible.

The study was conducted over two 45 day cycles. During the first cycle, first reader books were identified, marked with a red dot and interfiled with picture books. A first reader section was created for the second cycle. All …

Comparison Of Effectiveness: Course-Integrated Information Skills Instruction Or Instruction Of Information Skills In Isolation, Veronica J. F. Mitrisin

Graduate Research Papers

What effect does the course-integrated method of information skills instruction have on student scores on the Reference Section of the "Work Study Skills" subtest of the Iowa Tests of Basic Skills compared to the traditional method of teaching information skills in isolation by the library media specialist alone?