Ohio Journal of Science: Volume 93, Issue 4 (September, 1993)

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https://kb.osu.edu/handle/1811/22125

Front Matter
pp. 0
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Technology: Tomorrow's Determinate
Janson, Richard W. pp. 78-82
Article description | Article Full Text PDF (635KB)

Depositional Environments of the Pictured Cliffs Sandstone, Late Cretaceous, near Durango, Colorado
Tokar, Frank J., Jr.; Evans, James E. pp. 83-89
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Research Review: Evolution of Genetic Concepts for Ohio Soils
Smeck, Neil E. pp. 90-94
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Decline in the Index of Biotic Integrity of Delaware Run, Ohio, over 50 Years
Gatz, A. John; Harig, Amy L. pp. 95-100
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Predation by Cats on the Unique Endemic Lizard of Socorro Island (Urosaurus auriculatus), Revillagigedo, Mexico
Arnaud, Gustavo; Rodríguez, Antonio; Ortega-Rubio, Alfredo; Alvarez-Cárdenas, Sergio pp. 101-104
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An Annotated List of New Seasonal and County Records for Ohio Dragonflies (Odonata)
Alrutz, Robert W. pp. 105-108
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Brief Note: Odonata Records for Northwest Ohio
Moody, Dwight L. pp. 109-110
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Brief Note: First Report of Lepidodermella squamata (Gastrotricha: Chaetonotida) from Lake Erie
Evans, Wayne A. pp. 111-112
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Book Reviews
pp. 113-113
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Back Matter
pp. 999
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Back Matter
(1993-09)
Book Reviews
(1993-09)
Brief Note: First Report of Lepidodermella squamata (Gastrotricha: Chaetonotida) from Lake Erie
(1993-09) Evans, Wayne A.
In July 1992 a population of the freshwater chaetonotid gastrotrichLepidodermella squamata was discovered in a protected beach on South Bass Island in Put-in-Bay, Lake Erie, OH. L. squamata is most commonly reported from vegetated substrates in freshwater habitats in Europe and North and South America. This is the first report from Lake Erie and from the lentic interstitial habitat in North America.
Brief Note: Odonata Records for Northwest Ohio
(1993-09) Moody, Dwight L.
Ischnura kellicotti, the lilypad forktail damselfly, was found on 3 July 1992 at the Mud Lake Bog Nature Preserve, Williams County, OH. This is the first recorded collection/identification for this species in Ohio. Additionally, eight dragonfly species collected in four counties and seven damselfly species collected in four counties comprise 18 Odonata county records for northwest Ohio.
An Annotated List of New Seasonal and County Records for Ohio Dragonflies (Odonata)
(1993-09) Alrutz, Robert W.
This report is a contribution to the Ohio Dragonfly Survey. It includes 147 new county records involving 40 Ohio counties plus 17 new seasonal records together with notes on the ecology and behavior of selected species. These records and observations are based upon specimens collected in 50 Ohio counties during the period May through October, 1991 and 1992.
Predation by Cats on the Unique Endemic Lizard of Socorro Island (Urosaurus auriculatus), Revillagigedo, Mexico
(1993-09) Arnaud, Gustavo; Rodríguez, Antonio; Ortega-Rubio, Alfredo; Alvarez-Cárdenas, Sergio
During 1990 the distributions of the endemic lizard (Urosaurus auriculatus^ and the feral cat (Felts catus) of Socorro Island were observed and scats of the last species were collected. A total of 46 cat scats were analyzed, showing that lizards were an important prey item, varying in frequency from 33.33% in February to 66.66% in November. Because of the impact of sheep (Ovis aries) on the natural vegetation and because of the impact of cat predation, we recommend that a plan be developed for the removal of exotic species and the restoration of natural vegetation to Socorro Island.
Decline in the Index of Biotic Integrity of Delaware Run, Ohio, over 50 Years
(1993-09) Gatz, A. John; Harig, Amy L.
The purpose of this study was to compare the present biotic integrity of a central Ohio headwater stream with the conditions in 1940. Major changes in fish faunal composition occurred in Delaware Run over this time period. Only 33% (11 of 33) of the totalspecies collected were present in both years. Indices of biotic integrity (IBI) estimated for the 1940 data indicated that the stream was in good condition then, whereas it is in fair to poor condition now. The primary differences are as follows: 1) an increase in abundance of tolerant species suggesting an increase in general pollution, 2) a decrease in percentage of insectivores together with an increase in percentage of generalists suggesting a reduction of the insect food base, 3) a decrease in the number of simple lithophilic spawners suggesting degradation of reproductive habitat through siltation, and 4) an increase in percentage of pioneering fishes suggesting increased temporal stresses in the stream. Although the stream was not in pristine condition in 1940, it has been degraded further in the past half century.
Research Review: Evolution of Genetic Concepts for Ohio Soils
(1993-09) Smeck, Neil E.
The earliest genetic concepts of Ohio soils stressed the occurrence of gray eluvial and brown, Fe and Al rich subsoils. Although Conrey recognized clay eluviation-illuviation as an important genetic process as early as the 1930s, clay translocation was not emphasized and documented until the late 1950s and early 1960s. The genetic role of clay eluviation-illuviation was incorporated into Soil Taxonomy, which was adopted as the official USDA soil classification system in 1965, at the Order level establishing the class of Alfisols. In addition, criteria for the identification of argillic horizons were established. Since then studies have shown that the accumulation of clay in the B horizons of Ohio soils is not solely a result of clay illuviation. Subsoil clay accumulation is also attributable to the concentration of parent material clay from carbonate dissolution andiw situ clay formation. Acreage data generated from the Ohio Cooperative Soil Survey program indicate that 75% of Ohio soils contain B horizons with sufficient illuvial clay to qualify as argillic horizons and 62% of the soils in Ohio classify as Alfisols.
Depositional Environments of the Pictured Cliffs Sandstone, Late Cretaceous, near Durango, Colorado
(1993-09) Tokar, Frank J., Jr.; Evans, James E.
The Pictured Cliffs Sandstone was deposited in the northwestern part of the San Juan Basin (Colorado-New Mexico) during the last regression of the Cretaceous Interior Seaway. The unit is generally interpreted as deltaic or marginal marine; however, outcrops near Durango, CO, consist of repetitive sequences of hummocky stratified (HS) sandstone. Each HS sequence consists of a scoured surface overlain by hummocky-stratified, fine-grained sandstone 20-50 cm thick, overlain by ripple- to planarlaminated, bioturbated, very fine-grained sandstone to mudstone. Amalgamated HS sequences are as much as 7 m thick.
Technology: Tomorrow's Determinate
(1993-09) Janson, Richard W.
Front Matter
(1993-09)

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