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 20 of 62 for “"depredation"”.
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Development of Lure Forages for Minimizing Winter Depredation By Deer in South Dakota
Despite the number of deer (2-31/km2) that inhabit South Dakota, little is known about their growth rates or nutritional requirements and characteristics during severe winters. The objectives for this study were: 1) To document and compare growth rates of fawns from eastern South Dakota and the …
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Relations between forest and prairie fragmentation and depredation of artificial nests in Missouri
"Human settlement of native ecosystems has resulted in the destruction and fragmentation of habitats until, in many cases, only isolated remnants remain. The emerging field of conservation biology often examines these fragments, attempting to illucidate patterns of diversity, the mechanisms that …
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Crop Depredation by White-Tailed Deer at Sand Lake National Wildlife Refuge, South Dakota
… South Dakota in 1995 and 1996. To quantify depredation in corn (Zea mays) and soybean (Glycine max) fields on SLNWR and surrounding private lands, biomass removed by foraging was estimated using exclosures and paired open (exposed) plots. Amount removed was related to total standing crop of …
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Flightless Giant Canada Goose Depredation Abatement and Disgestibility of Selected Crops in South Dakota
Crop depredation by flightless giant Canada geese (Branta Canadensis maxima) has become a common occurrence across the upper Midwest. Due to numerous landowner complaints, South Dakota Department of Game, Fish and Parks (SDGFP) is evaluating several methods to solve this problem. One method is the …
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Rates of shark depredation of line-caught fish on the Protea Banks, KwaZulu-Natal
This study estimates rates of shark depredation in the charter boat fishery on Protea Banks, KwaZulu-Natal. Previous estimates based on fisher surveys suggested that shark depredation is a concern locally and may distort fishing mortality estimates. Methods involved quantitative data collection by …
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The Economic Impacts of Wolves on Calf Production on Western Montana Cattle Ranches Beyond Direct Depredation
… least one Wildlife Service (WS) confirmed wolf depredation on the ranch, weaned calves that were approximately 20 pounds lighter than ranches that did not have a WS confirmed wolf depredation in the same year, holding all else constant. The results suggest that calves on western Montana ranches …
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The Economic Impacts of Wolves on Calf Production on Western Montana Cattle Ranches Beyond Direct Depredation
… least one Wildlife Service (WS) confirmed wolf depredation on the ranch, weaned calves that were approximately 20 pounds lighter than ranches that did not have a WS confirmed wolf depredation in the same year, holding all else constant. The results suggest that calves on western Montana ranches …
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Demography, Reproduction, Diet and Crop Depredation in Three Species of Rodents in Natural and Irrigated Fields in Nigeria
… the rains), was probably a result of the greater depredation rate on the wheat, grown by irrigation during the dry season when other rodent food sources were less abundant.</p> <p>By the absence of <em>Tatera</em> in the irrigated fields this study provides evidence that the responses of African …
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Anthraquinone Corn Seed Treatment (Avitec™) As A Feeding Repellent for Ring-Necked Pheasants (Phasianus colchicus) on Newly Planted Corn in Eastern South Dakota
… from agricultural producers regarding pheasant depredation on newly planted and emerging corn have increased. Heisterberg (1984) estimated that $49 million is lost to pheasant depredation annually in the United States. Pheasants will consume the kernels of freshly planted and emerging corn …
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Nutritional Ecology of White-Tailed Deer: Assessment of an Index to Diet Quality and a Repellent
… producers lose millions of dollars annually to depredation caused by ungulates; although multiple repellents exist for deer, most are ineffective. Tannins are a plant defensive compound that have an astringent taste, reduce digestibility, reduce protein availability, and are toxic to rumen …
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Ecological profile of a Nigerian Sahelian wetland: toward integrated vertebrate pest damage management
… in most communities in the wetland reported crop depredation by vertebrate wildlife. Traditional controls of pests are still practiced, but most are ineffective or time consuming. About 64% of the communities consider acoustic scaring techniques to be the most effective methods of vertebrate pest …
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Life history trade-offs in a parental care-providing fish: the role of reproductive value, predation threat, and physiological condition on brood abandonment decisions by paternal largemouth bass
… whether mating success and simulated brood depredation affect the decision by paternal largemouth bass to abandon a brood. Second, I used a multivariate approach to jointly test for the influence of nutritional condition, hormonal stress, androgen concentration, and oxidative stress of …
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Nesting ecology and conservation of shrubland birds in a fragmented urbanized landscape in northeastern Illinois
… differences, most group types of depredation/failure rather than linking specific predators to nesting success/failure and then comparing levels of success/failure to other variables. The purpose of this study was to combine nest observations, video camera technology, and …
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Pheasant Nesting and Vegetation Development in Dense Nesting Cover Established Under the South Dakota Pheasant Restoration Program
… and landuse. Overall nest success was 33.9%. Depredation by mammalian predators was the greatest cause for nest failure in all landuses and study areas. No relationship was detected between nest density or success and vegetation density in DNC plots. Species composition of DNC areas followed a …
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The Status and Conservation Potential of Carnivores in Semi-Arid Rangelands, Botswana The Ghanzi Farmlands: A Case Study
… with small stock suffered from greater levels of depredation than those who farmed only cattle, while some species of predator elicited greater feelings of antipathy than others. Some farmers professed a distrust of government interference in their affairs which served to hamper efforts to obtain …
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Deer Preference for Corn Hybrids and Husbandry Practices During the Growing Season
… Numerous methods exist to minimize deer depredation, but all have met with varying degrees of success. Currently, no information is available on preference of white-tailed deer (Odocoileus virginianus) for corn hybrids during the growing season and how preference might affect depredation …
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