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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.

Distribution And Habitat Of The Southern Two-Lined Salamander, Eurycea Cirrigera, In Will County, Illinois: Implications For Population Management And Monitoring, David Mauger, Timothy Bell, Eric L. Peters

Journal of the Iowa Academy of Science: JIAS

The southern two-lined salamander (Eurycea cirrigera) was found to occur at numerous localities within the Kankakee River State Park in Will County, Illinois. The species is restricted to small drainages within the Kankakee River valley that have flow consisting of groundwater that discharges at seeps or springs at or within the valley bluff. Cooler water temperatures and possibly other conditions that are associated with water derived from seep or spring sources may be important factors in determining salamander abundance. This is particularly relevant to larval habitat. These observations suggest that the spring or seep-fed larval habitat may be the primary …

Book Review: Wildflowers And Other Plants Of Iowa Wetlands, Paul Christiansen

Journal of the Iowa Academy of Science: JIAS

Wildflowers and Other Plants of Iowa Wetlands. Sylvan T. Runkeland Dean M. Roosa. 1999. Iowa State University Press. 372 pages. ISBN 0-8138-2174-6 pbk.

Runkel and Roosa have scored again with an impressive book on the plants of Iowa wetlands. The format is similar to their very successful Wildflowers of the Tallgrass Prairie (ISU Press, 1989) with full-page color illustrations of each species with the facing page giving nomenclatural data, range and habitat, leaf, flower and fruit characteristics. Information and interesting facts about the plant, including uses by aborigines and early settlers, follows.

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 …

The Status Of The Blacknose Shiner (Notropis Heterolepis) Tn Iowa: A Preliminary Survey, Neil P. Bernstein, Michael Getting, Timothy Kamp, Stevenson Christain, Ryan Smith, Joseph Steele, Steven Steele

Journal of the Iowa Academy of Science: JIAS

During the last 45 years, the blacknose shiner (Notropis heterolepis) has been restricted to a three county area in northwestern Iowa. We surveyed locations where this siltation-intolerant species had been captured to update the status of the fish in the state. Streams were blocked with nets on both the upstream and downstream ends of sample areas, and fish were collected with a backpack electrofisher and seines. Lakes where the blacknose shiner had been found were also sampled. No blacknose shiners were found and several possible explanations are offered for their absence from historical sites.

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Back Cover

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Distribution And Abundance Of Three Freshwater Mussel Species (B1valv1a: U Ntontdae) Correlated With Physical Habitat Characteristics In An Iowa Reservoir, J. R. Straka, J. A. Downing

Journal of the Iowa Academy of Science: JIAS

A rapid drawdown (weeks) of a reservoir allowed us to determine the combined influence of water depth, maximum effective fetch, bottom slope, and substrate characteristics on abundance of three species of freshwater mussels. The three principal mussel species were significantly (PPyganodon grandis(Say) was most abundant on deeper shelves (ca. 3 m depth, slope 1 km), and sediment organic matter content was moderate (Lampsilis siliquoidea(Barnes), however, was most abundant in shallow water (Potamilus alatus(Say) had a more cosmopolitan depth distribution, but was found only on bottoms with low slope (Pyganodon grandiswas found to be negatively affected by increasing substrate organic matter …

Population Size Estimates For The Endangered Iowa Pleistocene Snail, Discus Macclintocki Baker, Tama K. Anderson

Journal of the Iowa Academy of Science: JIAS

Discus macclintocki Baker, the Iowa Pleistocene snail, is a federally endangered species found only on algific talus slopes in northeastern Iowa and northwestern Illinois. Population size estimates for fourteen D. macclintocki populations in Iowa and Illinois ranged from 182 to 22,125 individuals. Estimates from the program CAPTURE as well as Bayesian estimation procedures gave similar results, although the Bayesian method allowed estimation of populations that could not be estimated with CAPTURE due to small sample sizes. A comparison of two methods of sampling, visual counts of quadrats and cover boards, showed that using cover boards resulted in much higher probabilities …

Table Of Contents

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

The North American Reporting Center For Amphibian Malformations, Douglas H. Johnson, Suzanne C. Fowle, Jeffrey A. Jundt

Journal of the Iowa Academy of Science: JIAS

The North American Reporting Center for Amphibian Malformations was established to provide a conduit of information about, and a systematic data base on, malformed amphibians. This article describes the Reporting Center and the variety of features available at its Web site, presents an example of a summary analysis that can be conducted with its data, discusses caveats about the data, and makes recommendations about systematic surveys to better understand patterns and trends in the incidence of malformed amphibians.

Demographic And Reproductive Characteristics Of A Southern Illinois Population Of The Crayfish Frog, Rana Areolata, Michael Redmer

Journal of the Iowa Academy of Science: JIAS

Demographic (snout-vent length, skeletochronologically estimated age) and reproductive (fecundity, ova size) characteristics were examined in Riina areolata from Williamson County, Illinois. Fifty-nine frogs (36 males, 23 females) were sampled from breeding choruses in March 1996. Hematoxylinophilic annular lines of arrested growth (LAG) were detected in the diaphyses of cross-sectioned phalanges of all sampled frogs. t-tests revealed that male age (mean = 3.53 yr) and female age (mean = 3.83 yr) were not significantly different, but male SVL (mean = 82.78 mm) was significantly smaller than that of females (mean = 89.61 mm). There were positive correlations between SVL and age …

Herpetofaunal Abundance And Distribution In Northern Minnesota: Contributions Of Ecological Land Units And Assessment Of Sampling Methodology, Gabrielle Yaunches, S. R. Winterstein, H. Campa Iii, B. J. Kernohan, J. B. Haufler

Journal of the Iowa Academy of Science: JIAS

Herpetofaunal species distributions need to be understood and mapped using landscape descriptions that incorporate important habitat features and ecological processes. An ecosystem management effort in northern Minnesota is characterizing a landscape as a coarse filter for ecological communities. The coarse filter approach involves looking at communities in different successional stages and habitat types in a region (Haufler et al. 1996). Documenting distributions and abundances of herpetofauna using this coarse filter approach will allow data about these species to be incorporated in landscape planning efforts.

Conclusions Drawn From The Malformity And Disease Session, Midwest Declining Amphibians Conference, 1998, Michael J. Lannoo

Journal of the Iowa Academy of Science: JIAS

While the general problem of amphibian declines is well known, no issue recently has engendered as much concern by the public as amphibian malformities (Ouellet et al. 1996, Tietge 1996, Gray 1998, Helgen et al. 1998a and 1998b, D. Johnson 1998, T. Johnson 1998, Meteyer and Converse 1998). As a result, Gary Casper, Chris Phillips and I decided to assemble this symposium. The session was open to anyone who wished to participate. Nineteen papers were presented (there was one cancellation) and a panel discussion followed. I will organize this summary of, and conclusions drawn from, our symposium into two sections: …

Back Cover

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Limits To Ice Thickness In Iowa During The Late Wisconsinan, Eric C. Brevik

Journal of the Iowa Academy of Science: JIAS

Minimum and maximum limits to Des Moines Lobe ice thickness in Iowa during the Late Wisconsinan glaciation are calculated. These limits are based on minimum and maximum ice thickness calculations for the Des Moines Lobe in eastern North Dakota using crustal depression indicated by Lake Agassiz strandlines. Minimum and maximum basal shear stresses for the Des Moines Lobe are calculated by projecting a flow line from the terminus of the Des Moines Lobe back up-ice to the study site in northeastern North Dakota. Ice thickness in Iowa is then calculated with a method that uses the basal shear stress values. …

Field Surveys Of Midwestern And Northeastern Fish And Wildlife Service Lands For The Presence Of Abnormal Frogs And Toads, Kathryn A. Converse, James Mattsson, Laura Eaton-Poole

Journal of the Iowa Academy of Science: JIAS

The national distribution of information on the discovery of malformations in Minnesota frogs in 1995 stimulated collection and examination of newly metamorphosed frogs during 1996. By late summer and early fall of 1996, malformed frogs and toads were reported on U.S. Fish and Wildlife Service (USFWS) lands in Vermont (Northeast, Region 5) and Minnesota (Midwest, Region 3). In response to these reports, biologists in USFWS Regions 3 and 5 conducted a survey, during the summer of 1997 to determine the distribution and type of malformations in frogs and toads on selected Federal lands. Region 3 personnel surveyed 38 field stations …

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Landscape Associations Of Frog And Toad Species In Iowa And Wisconsin, U.S.A., Melinda G. Knutson, John R. Sauer, Douglas A. Olsen, Michael J. Mossman, Lisa M. Hemesath, Michael J. Lannoo

Journal of the Iowa Academy of Science: JIAS

Landscape habitat associations of frogs and toads in Iowa and Wisconsin were tested to determine whether they support or refute previous general habitat classifications. We examined which Midwestern species shared similar habitats to see if these associations were consistent across large geographic areas (states). Rana sylvatica (wood frog), Hyla versicolor (eastern gray treefrog), Pseudacris crucifer (spring peeper), and Acris crepitans (cricket frog) were identified as forest species, P. triseriata (chorus frog), H. chrysoscelis (Cope's gray treefrog), R. pipiens (leopard frog), and Bufo americanus (American toad) as grassland species, and R. catesbeiana (bullfrog), R. clamitans (green frog), R. palustris (pickerel frog), …