Science and Mathematics Education Commons^™

Factors Associated With Occurrence And Density Of Wetland Birds In The Prairie Pothole Region Of Iowa, Steve E. Fairbairn, James J. Dinsmore

Journal of the Iowa Academy of Science: JIAS

Wetlands within wetland complexes in northwestern, north-central, and central Iowa were surveyed for bird use in 1997 and 1998. Species occurrence, species richness, and density of nesting species were related to wetland habitat variables. A habitat diversity index measuring the evenness of distribution of the different habitats within a wetland was the best predictor of species richness in both years. The habitat diversity index was also the best predictor of the occurrence of individual species in both 1997 and 1998. Eight of 11 species (7 3%) in 1997 and 13 of 18 species (72%) in 1998 had greater densities in …

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Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Front Matter

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Tests Of A Rotenone-Impregnated Bait For Controlling Common Carp, Joseph L. Bonneau, Dennis L. Scarnecchia

Journal of the Iowa Academy of Science: JIAS

An experimental rotenone-impregnated pelleted (approximately 10 mg/pellet) bait was tested in force-feeding and field-feeding experiments as a method of control for common carp (Cyprinus carpio). Mortality rates of force-fed fish ranged from less than 40% when fed one pellet to 100% when fed more than 10 pellets. Mortality occurred within 48 h. Mortality rates of control fish did not exceed 10%. In reservoir feeding trials in 1994 and 1995, carp were fed for 2-3 weeks on a non-toxic, vegetable-based bait dispensed by automatic feeders, followed by one feeding of the bait with rotenone added. Carp ceased feeding on the rotenone …

Recent Observations Of The Distribution And Status Of Bluntnose Darters And Crystal Darters In Iowa, Melvin C. Bowler

Journal of the Iowa Academy of Science: JIAS

The distribution and status of Iowa's fishes were last extensively described in Iowa Fish and Fishing (Harlan et al. 1987). Since then, numerous fish collections have been made in Iowa's interior and bordering rivers and streams. Excluding non-native species, there have been three documented accounts of new fish species distributional records in Iowa since 1987. In this paper, I describe new collections of crystal darter (Crystallaria asprella) and bluntnose darter (Etheostoma chlorosomum) from the Mississippi River. The first documented specimen of C. asprella in Iowa was collected in Pool 11 of the Upper Mississippi River (UMR) in 1995. One specimen …

Tillage Effect On Soil Water Content And Soybean (Glycine Max) Yield In A Strip Intercropping System, M. Ghaffarzadeh, F. Garcia Prechac, M. M. Harbur, R. M. Cruse

Journal of the Iowa Academy of Science: JIAS

Soybean [Glycine max (L.) Merr.] response to strip-intercropping with corn (Zea may L.) and oat (Avena Jativa L.) interseeded with nondormant alfalfa (Medicago Jativa L.) may be affected by soil moisture. A three-crop strip-intercropping system of corn, soybean and oat interseeded with nondormant alfalfa was established to determine the effect of tillage system and row position on soil water content and grain yield in the soybean strip. The experiment was a split-plot design with three tillage treatments (conventional, CT; reduced, RT; and minimum tillage, MT) as main plot effects and three row positions (both edge rows and the center …

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Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Duane Isely (1918-2000): A Tribute, Stanley L. Welsh, Deborah Q. Lewis

Journal of the Iowa Academy of Science: JIAS

Duane Isely, Distinguished Professor Emeritus, Department of Botany, Iowa State University, Ames, Iowa, died on 6 December 2000. Dr. Isely was an outstanding plant taxonomist with expertise in other fields as well, especially in seed technology and weed identification and control. He was born in Bentonville, Arkansas, on 24 October 1918 into a family of academicians. His father, Dwight Isely, was professor and later Dean of Agriculture at the University of Arkansas, and his mother, Blessie Elise Dort Isely, also taught at the University of Arkansas and eventually received her Ph.D.

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Identification And Distribution Of The Treefrogs Hyla Versicolor And Hyla Chrysoscelis In Iowa, Catherine E. C. Oberfoell, James L. Christiansen

Journal of the Iowa Academy of Science: JIAS

Historically, the tetraploid and diploid species pair of gray treefrogs, Hyla versicolor and Hyla chrysoscelis, were mapped collectively in Iowa because no macroscopic morphological characteristics useful in recognizing the two species had been found. The present study reports identification and separation of the species by counts of nucleoli in the palpebral membrane of the eye and by measurement of scanning electron micrographs of toepad epithelial projections. Subsequent morphometric data confirm that the two species are morphologically distinct in Iowa but that overlap in characters continues to make macroscopic morphology unreliable for identifying individuals. H. chrysoscelis is distributed sporadically though all …

Awards And Recognition, Iowa Academy Of Science, 2001

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Iowa Academy Of Science Membership Directory, 2001-2002, Iowa Academy Of Science

Iowa Academy of Science Documents

Contents:

Editorial Board, Journal ... 5
Committees ... 6
Sections ... 14
ISTS Regional Directors ... 18
Awards of Merit ... 20
Excellence in Science Teaching Awards ... 21
Past Presidents ... 22
Membership Roster ... 23
Institutional Members ... 23
Corporate Sponsors ... 60

Cover - Table Of Contents

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Low-Saturated-Fat Soybean Oil Reduces Saturated Fat In School Menus, J. M. Mahnken, S. F. Lutz, C. J. Anders, W. R. Fehr

Journal of the Iowa Academy of Science: JIAS

This study evaluated the impact of using low-saturated-fat soybean {Glycine max (L.) Merr.} oil on the saturated fat content of school menus. Seventy-six weekly menus were obtained from the Iowa Department of Education during School Meals Initiative reviews for the 1996-1997 school year. Three modifications were performed on school menus using the Nuttikids computer program: Low-saturated- fat (LSF) soybean oil replaced traditional vegetable oil in menu items; LSF soybean oil was substituted for traditional vegetable oil, solid fats, and egg yolks in recipes; and a menu simulation was conducted where oils and solid fats used in menu items were …

Species Specific Odds Of Occurrence Of Blackspot Among Fish From The Maple River In Western Iowa, John W. Mellen

Journal of the Iowa Academy of Science: JIAS

Odds ratio analysis was used to evaluate the relative likelihood of occurrence of blackspot (Neascus pyriformil, Chandler) infections among 14 species of fish collected from the Maple River in Buena Vista and Ida Counties in western Iowa. Prevalence estimates ranged from 0% to 47.4% with a mean prevalence of 11.9%. The rank ordering of odds ratios of infection allowed the species to be categorized as those with risks greater than, less than, and not different from average risk to infection within the Maple River sample. The species with the largest odds ratio was the bluntnose minnow, (Pimephales notatus) (odds ratio …

Awards And Recognition, Iowa Academy Of Science, 2000

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Book Review: I Have A Weird Brother Who Digested A Fly, Jan Handler

Journal of the Iowa Academy of Science: JIAS

I Have A Weird Brother Who Digested A Fly. Joan Holub. Illustrator, Patrick Girouard. 1999. Albert Whitman & Company, Morton Grove, IL. 21 pages. ISBN 0-8075-3506-0

You may never have been tempted to swallow a fly-nor even challenged to do so 'on a dare'-but there's a solid chance you've wondered about some of the mysteries of digestion. Joan Holub offers an engaging book to share with the young people in your life who may share an interest in the intrigues of human body processes.

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Front Matter

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Lessons From An Inventory Of The Ames, Iowa, Flora (1859-2000), William R. Norris, Deborah Q. Lewis, Mark P. Widrlechner, Jimmie D. Thompson, Richard O. Pope

Journal of the Iowa Academy of Science: JIAS

A botanical survey of the vascular flora of the "planning and zoning jurisdiction" of the city of Ames, Iowa (i.e., the area within a boundary 3.2 km beyond the current city limits) was compiled from 1990 to 2000. During this survey, 916 taxa (71 % native) were encountered within chis boundary. Literature reviews and a survey of Iowa State University's Ada Hayden Herbarium for specimens that had been collected in Ames since 1859 add 204 taxa to the flora. This total of 1,120 taxa exceeds the number of taxa known from any comparable area (including counties) in Iowa. We produced …

In Memoriam: George Knaphus, Lois H. Tiffany

Journal of the Iowa Academy of Science: JIAS

George Knaphus, 75, died Saturday, 20 May 2000, after a two year battle with lymphoma. He was born at McCallsburg, Iowa and resided on a farm near there except during his WWII service years and his undergraduate college years at UNI until moving to Ames in 1998. He graduated from McCallsburg High School in 1942, served in the U.S. Army from 1943-45 in the 112th Infantry 28th division in Europe, and fought in the Battle of the Bulge, receiving the Bronze Star. He graduated with a B.S. in education from Iowa State Teachers College in 1949, earning master and doctorate …

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.

Expression Of Heterosis In Leaming And Midland Corn Belt Dent Populations, M. J. Carena, A. R. Hallauer

Journal of the Iowa Academy of Science: JIAS

Successful maize (Zea mays 1.) breeding programs are based on specific heterotic patterns. The Iowa Stiff Stalk Synthetic x Lancaster Sure Crop heterotic pattern is widely exploited in U.S. maize breeding programs. Alternative U.S. heterotic patterns have been suggested, but they have received limited attention and improvement. The objectives of this study were to evaluate cultivar crosses between Leaming and Midland Yellow Dent cultivars before and after inbred progeny selection and to assess their potential as an alternative U.S. heterotic pattern. Grain yield had a midparent heterosis value of 4.9% before selection and 17.8% in the third cycle of selection. …

Myxomycetes Of Big Bend National Park, Texas, Lois H. Tiffany, George Knaphus

Journal of the Iowa Academy of Science: JIAS

Seventy species of Myxomycetes have been collected directly in the field or observed later in the laboratory from field materials in moist chambers from Big Bend National Park, Texas. Collections were made over a 10 year period, 1989-1997 and 1999, during intensive seven-day fungus collecting trips to Big Bend in late September each year. McGraw (1968) in an earlier study of Texas Myxomycetes had reported 28 species from Big Bend, some of which were also found in this study. A total of 81 species are reported from the park. A variety of environmental conditions occurred during the 10 years with …

Back Cover

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Kegunaan Pembelajaran Berasaskan Web Bagi Meningkatkan Pencapaian Dan Minat Pelajar Terhadap Topik Tenaga Nuklear, Ashfahani Zakaria

Student Works (2000-2009)

The purpose of this study is to evaluate the effectiveness of Web-Based Learning (WBL) in improving students' achievement and interest in Nuclear Energy, which is one of the topics taught in KBSM Physics for Form 4. The WBL site used in the study was developed by the researcher based on Gagne's Nine Events of Instruction. The study was conducted using 30 Form 4 students who took Physics at one of the Smart Schools in Selangor Darul Ehsan. The selection of the students was based on their Physics results in the first semester examination. Two categories of students who had high …

Proses Penyelesaian Masalah Algebra Di Kalangan Pelajar Diploma Di Sebuah Institusi Pengajian Tinggi, Roselah Osman

Student Works (2000-2009)

The main objective of this study is to examine the problem solving process in learning Algebra, employed by the first semester students of diploma in engineering from an institute of higher learning. The research instrument comprised of five problem solving questions on basic Algebra. Six students were randomly selected as the research sample. The research data were the steps of written solutions shown by the sample. A modified scoring Rubric was used to analyse the process and the strategies used by the students to solve every problem solving question. The results of the study shows that some of the students …

Pelaksanaan Pentaksiran Amali Sains Berasaskan Sekolah Di Beberapa Buah Sekolah Menengah Daerah Hilir Perak, Alias Mingan

Student Works (2000-2009)

The purpose of this study is to investigate the implementation of the school based practical science assessment in several secondary schools in the Lower Perak District. The school based practical science assessment is carried out through the PEKA programme. Four aspects of the implementation of the PEKA programme was studied. The four aspects were (i) teachers' understanding of procedures in carrying out the PEKA programme after having attended relevant courses, (ii) teachers' ability in carrying out the PEKA programme, (iii) students' readiness to be assessed via PEKA, and (iv) factors which hinder the effectiveness of the implementation of the PEKA …

Penilaian Guru Terhadap Kaedah Pembelajaran Matematik Berasaskan Web Untuk Tajuk Set, Sa'adiah Mohamad Ali

Student Works (2000-2009)

The purpose of this study was to investigate teachers' evaluation on a Web-based Mathematics learning method for the topic "Set". The study focused on the learning activities and the six links in an online learning template designed for Mathematics learning. The study was conducted in the form of a workshop. A total of 18 teachers from 9 secondary schools were selected as the sample in this study. Data was collected through questionnaire and checklist. Overall, the findings in this study indicated that teachers held positive view towards the use of Web-based Mathematics learning method for the topic .. Set". A …