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University Of Northern Iowa Graduate Council Minutes, April 8, 1993, University Of Northern Iowa. Graduate Council.
University Of Northern Iowa Graduate Council Minutes, April 8, 1993, University Of Northern Iowa. Graduate Council.
Documents - Graduate Council
Meeting minutes from the Graduate Council of the University of Northern Iowa.
Editorial Office & Staff; Officers, Iowa Academy Of Science; Executive Board & Regional Directors, Iowa Science Teachers Section
Iowa Science Teachers Journal
No abstract provided.
Editorial Office & Staff; Officers, Iowa Academy Of Science; Executive Board & Regional Directors, Iowa Science Teachers Section
Iowa Science Teachers Journal
No abstract provided.
Editorial Board & Iowa Academy Of Science Officers And Directors
Editorial Board & Iowa Academy Of Science Officers And Directors
Journal of the Iowa Academy of Science: JIAS
No abstract provided.
The Pleistocene Glacial Record At Two Quarries In Decatur County, Iowa, Keith E. Schilling, Robert A. Stewart
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
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
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
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.
International Perspectives On Science Education, Mark A. Grey
International Perspectives On Science Education, Mark A. Grey
Iowa Science Teachers Journal
Since the 1983 publication of A Nation at Risk (National Commission on Excellence in Education), comparisons of the American education system with those of other countries have become commonplace. Hundreds of articles on the subject have appeared in the popular, professional and academic literature, as well as in a number of books. Comparisons have also been driven by the "America 2000" campaign. The challenge to science educators in this campaign is explicit: "By the year 2000, United States students will be first in the world in science and mathematics achievement."
Editorial Board & Iowa Academy Of Science Officers And Directors
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
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 …
Iowa Academy Of Science Directory, 1993-94, Iowa Academy Of Science
Iowa Academy Of Science Directory, 1993-94, Iowa Academy Of Science
Iowa Academy of Science Documents
Contents:
Board of Directors ... 5
Program Directors ... 6
Editors ... 6
Committees ... 8
Sections ... 22
Awards of Merit ... 28
Excellence in Science Teaching Awards ... 29
Past Presidents ... 30
Membership Roster ... 31
Habitat And Distribution Of Plants Special To Iowa's Driftless Area, William P. Pusateri, Dean M. Roosa, Donald R. Farrar
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.
Mass Selection For Adaptation In Antigua Maize (Zea Mays L.) Composite, F. M. San Vicente, A. R. Hallauer
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
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
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
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
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 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
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.
Editorial Office & Staff; Officers, Iowa Academy Of Science; Executive Board & Regional Directors, Iowa Science Teachers Section
Iowa Science Teachers Journal
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
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.