Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"cover quality"”.
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Species-level Compensatory Responses Buffer Drought and Nitrogen Eutrophication Impacts on Plant-Arthropod Interactions in Species-Rich Grasslands
… water and nitrogen availability and plant quality for herbivores. Drought and eutrophication can increase plant quality (i.e., foliar nitrogen), the former doing so via physiological changes. Alternatively, drought may decrease plant quality by reducing ion transport and turgor. …
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Land Use Changes and Pheasant Declines in Eastern South Dakota
… was censused, nesting densities determined, cover was mapped, and an interspersion index determined in 197 7 and 1978. Comparison to a similar study conducted in 1958 and 1959 indicated a decrease in pheasant numbers of 93% for crow counts and 94% in brood counts. Nesting densities decreased …
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Response By Upland Nesting Birds to Three Rejuvenation Treatments Applied to Two Types of Seeded Nesting Cover in Eastern South Dakota
<p>Seeded nesting cover reaches peak growth 3-5 years after planting and characteristics, primarily height and density, attractive to many upland nesting birds deteriorate after the year of peak growth. I studied the effects of 3 rejuvenation treatments (haying, haying and scarifying, haying and …
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Service life extension of reinforced concrete structures using hydrophobic impregnation
… This has been attributed to insufficient quality and quantity of cover concrete resulting from inadequate mix design and poor onsite workmanship respectively. Engineers also often lack understanding of concrete durability and prescribe insufficient cover depths relative to the exposure …