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2000

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Articles 361 - 375 of 375

Full-Text Articles in Education

Differences Among The Spatial Distribution Of Sympatric Amphibians, Robert Brodman Jan 2000

Differences Among The Spatial Distribution Of Sympatric Amphibians, Robert Brodman

Journal of the Iowa Academy of Science: JIAS

To assess amphibian declines, the factors that cause natural fluctuations in population size must be considered (Pechmann et al. 1991). Interspecific competition, predation and pond drying are known to influence patterns of distribution and composition of larval amphibian assemblages (Morin 1983, Brodman 1996, Skelly 1996). While a few studies have quantified amphibian patterns across a large number of ponds, most studies on breeding pond distributions have typically focused on pond characteristics associated with pairs of coexisting species (Thompson and Gates 1982, Skelly 1996). Little has been examined about the differences among the spatial distributions of all potentially interacting amphibian populations …

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Amphibian And Reptile Surveys In The Kaskaskia River Drainage Of Illinois During 1997 And 1998, Allan K. Wilson Jan 2000

Amphibian And Reptile Surveys In The Kaskaskia River Drainage Of Illinois During 1997 And 1998, Allan K. Wilson

Journal of the Iowa Academy of Science: JIAS

Currently there is little doubt among the scientific community of the decline of amphibians on an international scale (Berger et al. 1998, Kuzmin 1994, Laurance et al. 1996, Lips 1998) and across North America (Delis et al. 1996, Drost and Fellers 1996, Lannoo 1994). In light of these widespread declines it is essential that current populations be inventoried and evaluated so that future population changes can be detected and hopefully correlated with possible causes. Critical baseline information is lost when monitoring is not implemented until after a problem is detected. The effectiveness of long-term studies in detecting amphibian declines (Beebee …

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Editorial Board & Iowa Academy Of Science Officers And Directors Jan 2000

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

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Front Matter Jan 2000

Front Matter

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

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Higher Population And Twin Row Configuration Does Not Benefit Strip Intercropped Corn, M. M. Harbur, R. M. Cruse Jan 2000

Higher Population And Twin Row Configuration Does Not Benefit Strip Intercropped Corn, M. M. Harbur, R. M. Cruse

Journal of the Iowa Academy of Science: JIAS

Increased corn (Zea mays L.) grain yield with strip intercropping, made possible because of increased edge effects, makes this soil-conserving crop production system appealing to farmers. The objective of this study was to determine the population and row configuration needed to optimize the additional yield potential in each outside corn row. Treatments 'included: 74, 99, and 124 thousand plants ha-1 were grown in twin rows and 74 thousand plants ha-1 grown in single rows. Single rows or twin row centers were spaced 0.76 m. The experiment was conducted at four central Iowa sites during 1996 and 1997. Grain …

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Editorial Introduction, Gordon Wells Jan 2000

Editorial Introduction, Gordon Wells

Networks: An Online Journal for Teacher Research

Once again, this issue features articles by groups of educators who are collaborating to investigate and improve their practice and, in the process, to extend and develop their understanding of the principles underpinning their work. As the increasing number of links to such groups on the Links page attests, collaborative action research is on the increase, as is the number of educators who are experiencing the positive impact it has on their lives.

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Book Review: Henry L. Tischler (Ed.) (2000) Debating Points: Race And Ethnic Relations., Young M. Kim Jan 2000

Book Review: Henry L. Tischler (Ed.) (2000) Debating Points: Race And Ethnic Relations., Young M. Kim

Networks: An Online Journal for Teacher Research

Today's college students seem to care little about many important social issues on the public agenda. Their interest in such issues often appears to be at best minimal and sporadic, and consequently they are more likely to form and express superficial opinions on those matters. One exceptional case is the issue of race. The issue of race matters deeply to students, and most of them know where they stand on it.

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Defining Anuran Malformations In The Context Of A Developmental Problem, Carol U. Meteyer, Rebecca A. Cole, Kathryn A. Converse, Douglas E. Docherty, Mark Wolcott, Judy C. Helgen, Richard Levey, Laura Eaton-Poole, James G. Burkhart Jan 2000

Defining Anuran Malformations In The Context Of A Developmental Problem, Carol U. Meteyer, Rebecca A. Cole, Kathryn A. Converse, Douglas E. Docherty, Mark Wolcott, Judy C. Helgen, Richard Levey, Laura Eaton-Poole, James G. Burkhart

Journal of the Iowa Academy of Science: JIAS

This paper summarizes terminology and general concepts involved in animal development for the purpose of providing background for the study and understanding of frog malformations. The results of our radiographic investigation of rear limb malformations in Rana pipiens provide evidence that frog malformations are the product of early developmental errors. Although bacteria, parasites and viruses were identified in these metamorphosed frogs, the relevant window to look for the teratogenic affect of these agents is in the early tadpole stage during limb development. As a result, our microbiological findings must be regarded as inconclusive relative to determining their contribution to malformations …

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Effects Of Altosid And Abate-4e On Deformities And Survival In Southern Leopard Frogs Under Semi-Natural Conditions, Donald W. Sparling Jan 2000

Effects Of Altosid And Abate-4e On Deformities And Survival In Southern Leopard Frogs Under Semi-Natural Conditions, Donald W. Sparling

Journal of the Iowa Academy of Science: JIAS

Since 1995 when a group of school children in Minnesota found frogs with supernumerary limbs and missing limbs, there has been widespread interest in the amphibian malformation issue. Despite considerable effort to understand this problem, its extent and seriousness as well as direct causes of these malformations remain unclear. Progress on this issue has been hampered by a scarcity of scientifically reliable information on historical rates of abnormalities under undisturbed conditions and by the normal turnaround times of data collection, sample analysis and publication. One of the very few peer-reviewed publications with field-collected data showed that an average of 12% …

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Wetland Mitigation And Amphibians: Preliminary Observations At A Southwestern Illinois Bottomland Hardwood Forest Restoration Site, Kenneth S. Mierzwa Jan 2000

Wetland Mitigation And Amphibians: Preliminary Observations At A Southwestern Illinois Bottomland Hardwood Forest Restoration Site, Kenneth S. Mierzwa

Journal of the Iowa Academy of Science: JIAS

Much has been written on amphibian declines attributed to habitat loss or fragmentation. Much less is known about the response of amphibians to restoration of wetland habitat. Amphibians were monitored at a series of southwestern Illinois wetland mitigation sites from 1995-1998. By the end of the study period, all seven species of amphibians previously known from the site had been found within restored wetlands, and an eighth species had apparently colonized the site. Amphibian species associated with open sunlit wetlands were the first to enter the mitigation sites and were the most abundant. As trees mature and mitigation sites become …

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Reading The World Of University : What Counts?, Pamela Green, Gloria Latham Jan 2000

Reading The World Of University : What Counts?, Pamela Green, Gloria Latham

Australian Journal of Teacher Education

This paper will address the issues encountered by first year students in reading and reshaping the culture of university. The interim findings of a six year study will be dismantled in order to uncover what counts in the experience of first year university and the ramifications for educational practice and discourse. Feedback from staff continues to indicate that there is growing disparity between their expectations of first year students and student performance in areas such as independent learning, research skills, academic reading and writing, as well as the use of new technologies. There also seems to be a gap between …

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Editorial Board Jan 2000

Editorial Board

Basic Communication Course Annual

No abstract provided.

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An Acrostic Approach To Teaching Public Speaking In The Hybrid Communication Course, David W. Worley Jan 2000

An Acrostic Approach To Teaching Public Speaking In The Hybrid Communication Course, David W. Worley

Basic Communication Course Annual

Given the time and pedagogical demands of teaching the principles of public speaking in the hybrid course, both instructors and students are assisted by using a summative, yet sufficiently through, approach to teaching these principles. As acrostic approach described in a preparation outline format and built upon the word S-P-E-A-K provides an integrated, summative and sufficiently thorough instructional approach to meet these demands.

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Assessment Of The Repeated Speech Performance As A Pedagogical Tool: A Pilot Study, Mark A. Gring, Jera W. Littlejohn Jan 2000

Assessment Of The Repeated Speech Performance As A Pedagogical Tool: A Pilot Study, Mark A. Gring, Jera W. Littlejohn

Basic Communication Course Annual

Realizing the ongoing need to develop pedagogy in public speaking, these researchers investigated the learning achieved by asking students to repeat one of their speech assignments. They assessed the value of this practice from the students' viewpoint as well as the statistical change in performance outcomes. Across the eight competencies evaluated, students' average scores increased significantly on the repeated speech. Students who scored in the lower quartile on the first speech benefited most from the second opportunity. The researchers conclude that allowing students to repeat a speech appears to have pedagogical and practical merit.

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Education As Apprenticeship For Social Action: Composition Instruction, Critical Consciousness, And Engaged Pedagogy, David Alan Sapp Jan 2000

Education As Apprenticeship For Social Action: Composition Instruction, Critical Consciousness, And Engaged Pedagogy, David Alan Sapp

Networks: An Online Journal for Teacher Research

As a professional teacher of writing, I see language as one of many locations in which political struggles exist, and the classroom as a site from which my students and I can actively examine culture, developing strategies of language-use that can facilitate social change. Critical and feminist pedagogies are two closely-related ways of teaching from which we can examine socially-created power structures so that society can move towards new ways of thinking and towards a new consciousness. The state of critical consciousness that results from these pedagogies becomes realized when students, studying as apprentices for social action, begin to speak …

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