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The KnowledgeBank at OSU (80.208 recursos)

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Ohio Journal of Science: Volume 110, Issue 4 (September, 2010)

Mostrando recursos 1 - 6 de 6

  1. Back Matter

  2. Determination of Soluble Phosphorus Content in Black Walnut Husk Compost via Formation of Molybdenum Blue

    White, Jacob J.; Crosier, Joshua D.
    Walnut fruit husk compost is a by-product of the commercial processing of walnuts. These outer husks collect into generous size piles and are normally left to decompose. Black walnut (Juglans nigra) husk compost was analyzed for phosphorus content to determine its potential as a phosphorus fertilizer or soil additive. Twenty-two samples of walnut husk compost of varying decomposition times were collected and dried. Soluble phosphate was extracted with distilled water and reacted with ammonium molybdate and stannous chloride to form the brightly blue-colored heteropoly-molybdenum blue which was analyzed spectrophotometrically at 650 nm. Soluble phosphorus (as mass percent of dried samples) decreased...

  3. Old Regrowth Forest Patches as Habitat for the Conservation of Avian Diversity in a Southwest Ohio Landscape

    Means, Julianna L.; Medley, Kimberly E.
    Landscape fragmentation and chronic habitat loss are potentially profound obstacles to the protection of mature forest birds in the eastern deciduous forest of the Corn Belt agricultural region. Because of the general absence of large remnant forests, conservation efforts need to better understand the role of very small ‘regrowth’ patches for bird conservation. This study investigated how small old regrowth forests contribute to regional bird diversity and differ in composition in relation to their physical, ecological, and landscape attributes. From May to late June 2009, we measured forest composition and structure, and conducted avian point count surveys in nine regrowth...

  4. Evaluation of the Horizontal-to-Vertical Spectral Ratio (HVSR) Seismic Method to Determine Sediment Thickness in the Vicinity of the South Well Field, Franklin County, OH

    Haefner, Ralph J.; Sheets, Rodney A.; Andrews, Robert E.
    The horizontal-to-vertical spectral ratio (HVSR) seismic method involves analyzing measurements of ambient seismic noise in three dimensions to determine the fundamental site resonance frequency. Resonance is excited by the interaction of surface waves (Rayleigh and Love) and body waves (vertically incident shear) with the high-contrast acoustic impedance boundary at the bedrock-sediment interface. Measurements were made to determine the method’s utility for estimating thickness of unconsolidated glacial sediments at 18 locations at the South Well Field, Franklin County, OH, and at six locations in Pickaway County where sediment thickness was already known. Measurements also were made near a high-capacity production well (with...

  5. Abundance and Habitat Use of Winter Raptors on a Reclaimed Surface Mine in Southeastern Ohio

    Ingold, Danny J.
    Numerous studies have documented the benefits of reclaimed surface mines to breeding grassland birds, but few studies have focused on the use of such grasslands by winter raptors. I surveyed birds of prey along a driving transect on and around a 3,700 ha reclaimed surface mine in east-central Ohio from early January through mid-April 2009. My objective was to use these survey data to assess the relative abundance of migratory and winter resident raptors, as well as to examine potential habitat associations, perching preferences and morning versus afternoon activity patterns in each species. I sighted 382 total birds; red-tailed (Buteo...

  6. Front Matter

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