Ohio Journal of Science: Volume 76, Issue 4 (July, 1976)

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https://kb.osu.edu/handle/1811/22030

Front Matter
pp. 0
Article description | Article Full Text PDF (689KB)

Announcements and Important Dates to Remember
pp. 146-146
Article description | Article Full Text PDF (75KB)

Construction of Dike Disposal Sites in Lake Erie
Bernhagen, R. J. pp. 147-153
Article description | Article Full Text PDF (479KB)

The Ohio Journal of Science Officers, Committees, and Academy Representatives for 1976-77
pp. 154-155
Article description | Article Full Text PDF (124KB)

An Isolated Human Skeleton from Southern Ohio
Lallo, John W.; Blank, John E. pp. 156-163
Article description | Article Full Text PDF (1674KB)

A Study of Predation Rates of Leeches on Tubificid Worms Under Laboratory Conditions
Cross, William Howard pp. 164-166
Article description | Article Full Text PDF (263KB)

Hartmannella Culbertsoni as Revealed in Scanning Electron Microscopy
Allen, Delmas J.; DiDio, Liberato John A. pp. 167-171
Article description | Article Full Text PDF (765KB)

Distribution Patterns of Diatoms in Cedar Run
Hufford, Terry L.; Collins, Gary B. pp. 172-184
Article description | Article Full Text PDF (843KB)

Sample Unit Selection for Studies of Herbaceous Oldfield Vegetation
Squiers, Edwin R; Wistendahl, Warren A. pp. 185-188
Article description | Article Full Text PDF (294KB)

Brief Note Transmission Experiments with Babesia Microti (Gray Strain) Using Dermacentor Andersoni Stiles as a Vector
Genga, U. Edward; Kreier, Julius P. pp. 188-189
Article description | Article Full Text PDF (209KB)

Necrology
pp. 190-192
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Back Matter
pp. 999
Article description | Article Full Text PDF (718KB)

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    Back Matter
    (1976-07)
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    Necrology
    (1976-07)
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    Sample Unit Selection for Studies of Herbaceous Oldfield Vegetation
    (1976-07) Squiers, Edwin R.; Wistendahl, Warren A.
    The size and number of sampling units needed to sample herbaceous oldfield vegetation must be determined for each situation. Prior to obtaining data for a long-term study of early oldfield plant succession at the Waterloo Mills Field Research Station, Pa. statistical tests and theoretical considerations were evaluated. Of the five sizes of circular quadrats tested, the 0.03125 m2 size was determined to be suitable to obtain detailed data efficiently and yet sample within the estimated smallest scale of heterogeneity. A sample of 100 quadrats, the minimum number needed to compare frequencies, was determined to be adequate (within 10%) from calculations of the standard error of the mean, running means, and species-area curves. Subsequently, annual samples were obtained at 100 points from a stratified grid of 570 quadratcenter points in each 6.40 x 9.12 m subplot studied.
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    Distribution Patterns of Diatoms in Cedar Run
    (1976-07) Hufford, Terry L.; Collins, Gary B.
    The diatom communities of Cedar Run, Champaign County, Ohio were studied to determine their spatial and seasonal variation. Collections were obtained using glass slides as an artificial substratum and the diatom community was determined by identifying and counting approximately 1,000 valves on each slide. There were 190 diatom taxa identified, 82 of which were new records for Ohio. A multivariate analysis of the data resulted in unique clustering of points for each station, indicating a heterogeneous diatom assemblage in Cedar Run. Results were interpreted as indicating that areal effect on diatom community patterns masked that of seasonal influence in Cedar Run. A seasonal pattern was apparent when data for each station were considered separately from other stations.
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    Hartmannella Culbertsoni as Revealed in Scanning Electron Microscopy
    (1976-07) Allen, Delmas J.; DiDio, Liberato John A.
    An axenic culture of Hartmannella culbertsoni obtained from the American Type Culture Collection was used in this study. Amoebas maintained in a trypticase soy broth medium were concentrated, fixed and dehydrated before being transferred drop-wise to round microscope cover classes for critical point drying in liquid CO2. Dried specimens were coated with carbon and palladium-gold and studied with an SEM. H. culbertsoni showed extreme polymorphism. Surface specializations or microappendages, not previously demonstrated in the light microscope, were observed. Some of the amoebas possessed smooth cellular surfaces with scattered bleb-like and bulbous ectoplasmic projections and others had irregular surface contours with threadlike processes of varying lengths. Other cells exhibited finger-like projections which formed a fringe over most of the surface. Such advanced pleomorphism, under identical environmental conditions, depends on the phase of growth, differential adhesion and locomotion of cells.
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    A Study of Predation Rates of Leeches on Tubificid Worms Under Laboratory Conditions
    (1976-07) Cross, William Howard
    The objective of this study was to establish the rate at which predatory leeches consume tubificid worms, at worm population densities simulating those of Cleveland Harbor. Two common species of leeches from Lake Erie were studied, Helobdella stagnalis and Erpobdella punctata. A mixed population of tubificids, mostly Limnodrilus hojfmeisteri, Limnodrilus cervix and Peloscolex multisetosus were used for prey. The mean consumption rate for Helobdella stagnalis was 0.57 tubificids/leech/day. The mean consumption rate of Erpobdella punctata was 1.78 tubificids/leech/day. Previous studies of the benthos of the Cleveland Harbor reported 11 Helobdella stagnalis per square meter of bottom area. Using this number, specimens of Helobdella stagnalis were estimated to consume 6.27 tubificids per square meter of bottom area per day at 23.5° C.
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    An Isolated Human Skeleton from Southern Ohio
    (1976-07) Lallo, John W.; Blank, John E.
    During the recent construction of the Ross County Regional Water System in Southern Ohio, the skeletal remains of a prehistoric American Indian were recovered. The isolated burial remains represent the skeleton of a male, between 40 and 45 years of age. The discovery circumstances prevent accurate determination of the date of deposition. An extensive examination of the skeletal remains suggests the occurrence of several pathological lesions among which are: a healed fracture of the left clavicle, osteoarthritis of the joint surfaces of the long bones and vertebrae, periostitis of the lower limbs, cribra orbitalia, and an advanced case of Leggs-Calve-Perthes Disease.
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    Construction of Dike Disposal Sites in Lake Erie
    (1976-07) Bernhagen, R. J.
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    Front Matter
    (1976-07)