Social and Behavioral Sciences Commons^™

Ecological Problems With Iowa's Invasive And Introduced Fishes, Neil P. Bernstein, John R. Olson

Journal of the Iowa Academy of Science: JIAS

Since the time of European settlement, at least 59 non-indigenous fish species have been introduced, reached, or moved within Iowa waters. At least 28 nonnative fish species have been introduced into, or reported from Iowa waters since settlement. Of that number, 10 are established at this time through natural reproduction. In addition, many species of native fishes have been translocated within the state, and we provide documentation for 31 of these species. Two translocated species, gizzard shad (Dorosoma cepedianum) and yellow bass (Marone mississippiensis), have had adverse impacts on Iowa's aquatic ecosystems. While many introductions are thought to be benign, …

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Invasive Species In Iowa: An Introduction, James J. Dinsmore, Neil P. Bernstein

Journal of the Iowa Academy of Science: JIAS

Concern over the increasing spread of invasive species and the potential impacts of those species on native communities has been the subject of several books and hundreds of research papers in recent years. President Clinton's Executive Order on invasive species in February1999 raised national attention to this issue. Natural resource agencies have been plagued by an ever-increasing number of invasive species and now consider this issue the second most important problem (after habitat loss) in their fight to maintain some semblance of natural communities on this planet. One group of experts estimated that in the United States alone, invasives cost …

War On Weeds: Winning It For Natural Areas, Jerry E. Asher

Journal of the Iowa Academy of Science: JIAS

I am delighted to be here with you today to discuss the rapidly accelerating damage that invasive exotic plants are inflicting on natural areas in this country. This problem may seem overwhelming, but you need not despair because there are economical, realistic, and effective strategies available to meet this challenge.

There are two purposes to this presentation: to give you information you can use to convince others that invasive exotic plants are seriously harmful, and to suggest that we can win this war on invasive exotic plants if we engage enough of the right people.

An Overview And Management Plan Of Iowa's Non-Native, Invasive, Terrestrial Forbs, Deborah Q. Lewis, Richard O. Pope

Journal of the Iowa Academy of Science: JIAS

Non-native, invasive forb species have been a problem in Iowa since the earliest decades of Iowa's European settlement. The history of studies of Iowa's invasive plants began with L. H. Pammel, and these studies continue to present. Three tables cite the occurrence of many of these species in the state, with Table 1 listing 93 non-native forbs reported by Pammel, Table 2 citing ten invasive forbs of natural areas, and Table 3 adding 38 observed or potential aggressive species of Iowa's anthropogenic and natural areas.

There has been a divergence of interest and research in the management of invasive species …

More Than A Century Of Change In The Ames, Iowa Flora (1859-2000), William R. Norris, Mark P. Widrlechner, Deborah Q. Lewis, Jimmie D. Thompson, Richard O. Pope

Journal of the Iowa Academy of Science: JIAS

We compared two floras compiled in Ames, Iowa: (1) an "historic" flora based on two published floras (1871, 1890) and on 1450 herbarium voucher specimens of plants collected in Ames between 1859 and 1899, and (2) a "current" flora compiled by us during recent fieldwork (1990-2000). Our goals were to determine 1) long-term changes in composition (i.e., the proportion of native species) over time, 2) long-term changes in the abundance of individual plant species over time, and 3) the extent of gains and losses of native and non-native plant species. We found that the proportion of native species declined over …

Purple Loosestrife: History, Management, And Biological Control In Iowa, Amy P. Wiebe, John J. Obrycki

Journal of the Iowa Academy of Science: JIAS

Purple loosestrife (Lythrum salicaria) is an invasive plant species infesting wetlands in North America. Biodiversity and wetland habitat quality are reduced following purple loosestrife establishment. Several management tactics, including cultural, mechanical, and chemical controls, have had limited success in reducing the spread of purple loosestrife. Beginning in the 1990s, a biological control program has introduced several species of natural enemies from Europe that feed on purple loosestrife. Since 1994, Iowa State University has reared and released two species of beetles that feed on purple loosestrife, Galerucella calmariensis and G. pusilla. Biological control is one component of an integrated purple loosestrife …

Forest Invasives In Iowa: Current Problems And Future Issues, John Walkowiak, John Haanstad

Journal of the Iowa Academy of Science: JIAS

Iowa's forest resources of primarily deciduous trees covers over 0.8 million hectares (2 million acres) of upland and floodplain sites too steep or too wet for traditional row crop agriculture. These limited natural forests along with urban trees and shelterbelts plantings of trees are critical for environmental and economic enhancement in the state. Although not yet established in the state, exotic insects, such as gypsy moth, Asian longhorned beetle, and pine shoot beetle, threaten native tree vitality. Established exotic diseases such as oak wilt and Dutch elm disease continue to plague the survival of Iowa's oak and elm resources, respectively. …

Non-Native Amphibians And Reptiles In Iowa, James L. Christiansen

Journal of the Iowa Academy of Science: JIAS

Only a few species appear as introductions into Iowa in the last 30 years. The bullfrog, Rana catesbeiana, was systematically introduced along with fish stocked from hatcheries in the 1930s and this species continues to spread in northern Iowa where it poses a hazard to smaller frogs. Turtles sold as pets, primarily map turtles (Graptemys pseudogeographica and G. geographica) and red-eared turtles (Trachemys scripta) continue to be found in scattered ponds, usually rural, throughout the state. The eastern box turtle (Terrapene carolma) has been reported in or on the edge of most major Iowa cities even though no breeding population …

Invasive Birds In Iowa: Status, Problems, And Threats, James J. Dinsmore

Journal of the Iowa Academy of Science: JIAS

A total of 18 invasive bird species has been introduced into or have expanded their range to include Iowa. These include ten non-North American species, one North American species that has been displaced and now is established in Iowa, and seven native species that have been released to reestablish Iowa populations. Twelve of those are regularly occurring species in Iowa, and they comprise 3.0% (12 of 404) of the species known from Iowa and 5% (10 of 199) of Iowa's nesting avifauna. These percentages are similar to those found in neighboring states. Several more species are likely to become established …

Index For The Journal Of The Iowa Academy Of Science Volume 108 And Erratum

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Back Cover

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Cityscape Magazine Article, Erika Wilkins

Postville Project Documents

An article titled "Taste of Postville festival brings community together" reports on the fourth annual festival held on August 26, 2001 that provided a way for people to learn of the cultures in the community.

Taste Of Postville (Postville Herald Leader, September 5, 2001), Sharon Drahn, Wanda Simmons

Postville Project Documents

Articles reporting on the availability of cookbook of recipes from the ethnic groups in Postville and on the upcoming Taste of Postville festival.

Postville Struggles To Keep Peace (Des Moines Register, April 22, 2001), Mike Kilen

Postville Project Documents

Reporting on the impact the variety of immigrants has had on the town of Postville.

Introduction, Ken Mccormick

Major Themes in Economics

No abstract provided.

Cover - Table Of Contents

Major Themes in Economics

No abstract provided.

The Economic Agenda Of Catholic Social Teaching: The Framework For A Normative Social Theory, Michael D. Russell

Major Themes in Economics

The Catholic Church has developed a position on socio-economic issues during the past one hundred years as detailed in economically-minded papal encyclicals and related church documents. Included are several criteria that provide a framework for evaluating areas of economic policy. The Church’s mission has been to develop a normative social theory capable of integrating both theology and economic theory. The body of literature addressing the Church’s approach to socio-economic issues is known as Catholic Social Teaching, or CST. I will use CST to describe the Catholic platform of normative economic justice, its justification of social theory, and the potential economic …

Geography Newsletter, Spring 2001, University Of Northern Iowa. Department Of Geography.

Geography Newsletter

Inside this issue:

-- Faculty/Staff News
-- Recent Geography Graduates
-- M.A. Thesis Wins first Place Award
-- Current Graduate Students
-- Alumni Album
-- UNI Foundation Geography Discretionary Fund
-- Scenes From the Spring '00 Banquet in Honor of Roy Chung's Retirement
-- Spring Awards Banquet: Friday, April 20, 2001

Cops And Robbers: Looking At The Interdependent Relationship Between Police And Crime Using Differential Equations, Matthew Cole

Major Themes in Economics

This paper devises a system of differential equations to model the dual dependency of police and crime, based on a predator/prey relationship. It emphasizes the complexity of the relationship and shows how empirical research can be skewed if it only focuses on a limited time interval. The system of differential equations explains why some researchers have come to the mistaken conclusion that hiring more police induces more crime, and gives policy makers better information with which to make decisions.

A Game Worth Playing? The Distributional Effects Of Casino Gambling: An Emphasis On Iowa, Brad Rolling

Major Themes in Economics

This paper examines the distributional effects of casino gambling, with an emphasis on Iowa. The casino tax is found to be regressive, and regressivity increases with increased accessibility to casinos. Prevalence and costs of pathological and problem gamblers are discussed in detail. Evidence suggesting a positive correlation between casinos and bankruptcy rates is presented. Overall, it is found that casinos disproportionally harm poor individuals, non-whites (with the exception of Native Americans), and those living near casinos. Iowans must understand the equity implications of casino gambling in order to make informed policy decisions, including the county referendums in 2002.

Consumer Views On Genetically Modified Crops, Levente Timar

Major Themes in Economics

Differences in consumer views about genetically modified crops have recently lead to trade disputes between the United States and the countries of the European Union. This paper uses a simple cost-benefit model to examine what factors influence consumer views on modified crops, and analyses them in an attempt to explain the observed difference between the American and European perspectives. Potential socio-economic, health and environmental effects interact with personal beliefs to shape consumer views. It is argued that most of the difference in opinions can be traced back to the lack of accurate information. There is a difference in the perceived …

China: Unfulfilled Promise, Matthew Gernes

Major Themes in Economics

At the turn of the first millennium A.D. the Chinese empire was perhaps the most technologically and economically advanced civilization on the planet. Economic historians continue to wonder why China stopped progressing along a path which seemed to promise an industrial revolution similar to that experienced by the West. This paper examines how the social and political institutions which made pre-industrial China different from Europe may have prevented such a revolution from happening. The imperial bureaucracy, Confucian philosophy and the centralized nature of the empire all played a role in preventing China from escaping the pre-modern world until the 20th …

Madeleine Albright Lecture At Uni March 28, 2001, University Of Northern Iowa.

Joy Cole Corning Distinguished Leadership Lecture Series

Madeleine Albright an American diplomat and political scientist served as the 64th University States secretary of state from 1997 to 2001. She was the first woman to serve in the position.

Play Therapy, Melissa M. Sitzmann

Graduate Research Papers

Play therapy is a current trend in school and mental health counseling that takes into account the importance of play for a child's self -expression. It is primarily used with children ranging from three to ten years in age (Knell, 1995). Play therapy is not a theory that stands alone; counselors utilizing play therapy draw from their personal theoretical orientation and blend it with play as the primary means of communication (Cochran, 1996).

The purpose of this paper is to describe play therapy skills. In addition, two theories of play therapy that could be implemented in a school setting will …

Profitability Of Crop Rotations In Iowa In A Stress Environment, Derrick N. Exner, R. M. Cruse

Journal of the Iowa Academy of Science: JIAS

Small grains crops have traditionally been included in Midwestern cropping systems, but their use is restricted by uncertain yields, poor prices, and lack of on-farm uses in operations without livestock. We compared the corn (Zea mays L.)-soybean (Glycine max (L.) Merr.) crop rotation to actual or simulated three-yr rotations at two sites in Iowa between 1986 and 1989. Water was generally more limiting than was nitrogen, which produced minimal response in the corn to which it was applied. April-November precipitation at Nashua, Iowa ranged from 59 to 111 % of average, while at Des Moines, Iowa it was 77% of …

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Toxicity Of Cedar River Water And Sediment To Larval Walleye, Todd A. Phillips, Robert C. Summerfelt

Journal of the Iowa Academy of Science: JIAS

Although all anthropogenic stressors affecting aquatic ecosystems have not been isolated, suspended solids, sediment, and pesticides are believed to be major factors in agroecosystems. In the spring of 1998 and 1999, static 48-h tests were conducted to determine the toxicity of water and sediment collected from the Cedar River to prolarval, postlarval I, and postlarval II walleye (Sttzostedzon vitreum). River water and sediment were not more toxic to any larval stage of walleye than reference water and sediment. Cedar River sediments, suspended solids, and water were examined for occurrence of the most common herbicides and insecticides in Iowa. No pesticides …

Are Black Colleges Necessary?, Mark B. Longley

Graduate Research Papers

Black colleges have a vital role in the lives of young people and the black community as a whole. They are not vanguards of segregation, but of black culture and black life. Though they are not the most up-to-date technologically, or offer the most magnificent campuses, or accumulate large endowments, they are the most successful in educating black students, doing it with minimal resources. I suggest other institutions study the techniques of HBCUs in order to educate all young people, particularly other minority groups such as Latinos and Native Americans. Our communities, states, and federal governments as well as corporations …

Facing The Death Of A Child : Effects On The Family System, Rita Kae Conger

Graduate Research Papers

The death of a child could very well be the most difficult crisis a family system can face. The uniqueness and severity of this type of crisis make it quite important for those in the counseling field to be aware of the many different aspects of a child's death which may be very significant to the child's family.

For this reason, the purpose of this paper is to describe a number of variables which affect the healing process. These variables include the cause of death, the age of the child at the time of death, family dynamics, and the relationship …