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Theses/Dissertations

Life Sciences

2008

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Articles 721 - 740 of 740

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Waterhole Dynamics And Chemical Signals Of African Elephants ( Loxodonta Africana ), Stacie Marie Castelda Jan 2008

Waterhole Dynamics And Chemical Signals Of African Elephants ( Loxodonta Africana ), Stacie Marie Castelda

Electronic Theses and Dissertations

The distribution of mammals in a savanna environment is influenced by abiotic and biotic factors. The African savanna experiences distinct wet and dry seasons. Species become spatially restricted around water resources during the dry season, resulting in increased intraspecies and interspecies resource-based aggregation. A dominate species, such as the African elephant (Loxodonta africana), may influence this aggregation. I examined the influence of wet and dry seasons and ambient temperature on the use of a waterhole by elephants as well as the co-occurrence of elephants and other mammals at the waterhole. Biodiversity scans (October 2004-June 2007) and were performed at a …

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Long-Term Functional Trait Dynamics In Abandoned Agricultural Fields, Timothy A. Rye Jan 2008

Long-Term Functional Trait Dynamics In Abandoned Agricultural Fields, Timothy A. Rye

Masters Theses

No abstract provided.

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Evaluating The Illinois Stream Valley Segment Model As An Effective Management Tool, Stephen S. Warrner Jan 2008

Evaluating The Illinois Stream Valley Segment Model As An Effective Management Tool, Stephen S. Warrner

Masters Theses

No abstract provided.

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Spatial And Ecological Patterns Of Tent Location In The Eastern Tent Caterpillar, Malacosoma Americana (Lepidoptera:Lasiocampidae), Jennifer Pleasant Jan 2008

Spatial And Ecological Patterns Of Tent Location In The Eastern Tent Caterpillar, Malacosoma Americana (Lepidoptera:Lasiocampidae), Jennifer Pleasant

Masters Theses

No abstract provided.

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Terrestrial Macrofungi Of Old-Growth Prairie Groves, Vincent P. Hustad Jan 2008

Terrestrial Macrofungi Of Old-Growth Prairie Groves, Vincent P. Hustad

Masters Theses

No abstract provided.

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Foraging Site Selection In Prairie Kingsnakes (Lampropeltis C. Calligaster): An Experimental Approach, Angela M. Fornell Jan 2008

Foraging Site Selection In Prairie Kingsnakes (Lampropeltis C. Calligaster): An Experimental Approach, Angela M. Fornell

Masters Theses

No abstract provided.

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A Survey Of Carrion And Burying Beetles (Coleoptera:Silphidae) In Mchenry County, Illinois, David Suhrbur Jan 2008

A Survey Of Carrion And Burying Beetles (Coleoptera:Silphidae) In Mchenry County, Illinois, David Suhrbur

Masters Theses

No abstract provided.

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Movements And Home Ranges Of Harbor Seals (Phoca Vitulina) In The Inland Waters Of The Pacific Northwest, Sarah E. Hardee Jan 2008

Movements And Home Ranges Of Harbor Seals (Phoca Vitulina) In The Inland Waters Of The Pacific Northwest, Sarah E. Hardee

WWU Graduate School Collection

Marine resources are under increasing human pressure and conservation managers are using tools such as marine reserves to increase target fish stocks. However, marine predators may respond to the resultant changes in fish abundance. Harbor seals, Phoca vitulina, are abundant marine predators in the inland waters of the Pacific Northwest with the potential to influence the recovery of depressed fish stocks, yet relatively little is known about their movement patterns and home range sizes in the region. To describe harbor seal behavior, I deployed satellite and time-depth recorder tags during April and May 2007 on 20 individuals at three haul-out …

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Growth And Grazing Of Microzooplankton In Response To The Harmful Alga Heterosigma Akashiwo In Prey Mixtures, Sylvia Lynne Graham Jan 2008

Growth And Grazing Of Microzooplankton In Response To The Harmful Alga Heterosigma Akashiwo In Prey Mixtures, Sylvia Lynne Graham

WWU Graduate School Collection

Heterosigma akashiwo is one of the most ichthyotoxic species of phytoplankton, severely impacting marine ecosystems and economies worldwide. Microzooplankton may play a role in regulating blooms of this alga. This study tested the effects of H. akashiwo, when part of a mixed-prey assemblage, on the growth and feeding of microzooplankton. A saturating prey concentration of 200 μg C l-1 was determined for three ciliate species: Favella sp., Strombidinopsis acuminatum, and Metacylis sp. This was used as the total prey concentration for dual-prey experiments in which the three ciliate species were exposed to reciprocal concentrations of H. akashiwo and a beneficial …

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Evaluation Of The Oxalate-Consuming Activities Of Probiotic Microorganisms, Alexandra E.C. Baluka Jan 2008

Evaluation Of The Oxalate-Consuming Activities Of Probiotic Microorganisms, Alexandra E.C. Baluka

Masters Theses

No abstract provided.

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Beneficial Effects Of Estradiol Are Mediated Through Apoe, Aseem Hussain Jan 2008

Beneficial Effects Of Estradiol Are Mediated Through Apoe, Aseem Hussain

Masters Theses

No abstract provided.

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Mating Bias In The Red Imported Fire Ant, Solenopsis Invicta, Kendra Carroll Jan 2008

Mating Bias In The Red Imported Fire Ant, Solenopsis Invicta, Kendra Carroll

Masters Theses

No abstract provided.

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Influence Of Seed Source On Vegetative And Reproductive Performance Of Three Common Prairie Grasses Common In Grassland Restoration, Matt Burmeister Jan 2008

Influence Of Seed Source On Vegetative And Reproductive Performance Of Three Common Prairie Grasses Common In Grassland Restoration, Matt Burmeister

Masters Theses

No abstract provided.

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Tracing Sperm In Multiply-Mated Female Anastrepha Suspensa, (Diptera:Tephridae), Preeti Dhakal Jan 2008

Tracing Sperm In Multiply-Mated Female Anastrepha Suspensa, (Diptera:Tephridae), Preeti Dhakal

Masters Theses

No abstract provided.

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Immuno-Opioid Interaction A Potential Connection, Linda Staikos-Byrne Jan 2008

Immuno-Opioid Interaction A Potential Connection, Linda Staikos-Byrne

Seton Hall University Dissertations and Theses (ETDs)

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Antidumping Investigation In Agriculture: Issues Of Trade Diversion-Named Vs Non-Named Countries, Nandini Bandyopadhyay Jan 2008

Antidumping Investigation In Agriculture: Issues Of Trade Diversion-Named Vs Non-Named Countries, Nandini Bandyopadhyay

LSU Master's Theses

This study addresses the issue of antidumping investigations and their effect on trade of agricultural products. The question which this study addresses is whether antidumping is helping domestic industries or is simply diverting trade away from the named countries to the non- named countries (countries not mentioned in the antidumping petition). Antidumping has emerged as an important tool in the hands of importing countries over the last two decades The World Trade Organization (WTO) has defined dumping as a situation of international price discrimination. Dumping occurs when exporting countries are selling the product in the international market at a price …

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Factors Potentially Influencing The Abundance Of Mosquitoes In Louisiana Rice Fields, Ana Maria Sanchez De Cuadra Jan 2008

Factors Potentially Influencing The Abundance Of Mosquitoes In Louisiana Rice Fields, Ana Maria Sanchez De Cuadra

LSU Master's Theses

The rice stink bug (Oebalus pugnax) is the major pest of late-season rice in Louisiana. Prior studies indicate that large populations of mosquitoes are often present in rice fields during the time that rice fields are infested with rice stink bugs. Lambda-cyhalothrin (Karate®) is widely used to control rice stink bugs. The purpose of this study was to determine if application of the insecticide Karate® at a rate of 0.033 kg/ha, for rice stink bug control had an effect on the population of mosquitoes in rice fields. This effect was assessed by monitoring natural populations of mosquitoes before and after …

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Distribution Patterns And Habitat Use Of Black Cockatoos (Calyptorhynchus Spp.) In Modified Landscapes In The South-West Of Western Australia, Marieke S. Weerheim Jan 2008

Distribution Patterns And Habitat Use Of Black Cockatoos (Calyptorhynchus Spp.) In Modified Landscapes In The South-West Of Western Australia, Marieke S. Weerheim

Theses: Doctorates and Masters

Conservation planning for animal species inhabiting modified landscapes requires understanding of where animals occur and how they utilise both natural and modified habitats. In this study the distribution and foraging behaviour of the forest red-tailed cockatoo (Calyptorhynchus banksii naso), Baudin’s cockatoo (C. baudinii) and Carnaby’s cockatoo (C. latirostris) was investigated in three study areas which each contained a different combination of modified habitats. Pickering Brook contained native forest and orchards, Wungong contained a mosaic of native forest and revegetation, while Karnet contained primarily native forest and paddocks. The relationship between cockatoo distribution and land use types was examined by constructing …

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Drought Traits Of Eucalyptus Gomphocephala In Yalgorup National Park, Paul L. Drake Jan 2008

Drought Traits Of Eucalyptus Gomphocephala In Yalgorup National Park, Paul L. Drake

Theses: Doctorates and Masters

Isohydric and anisohydric regulation of plant water status has been observed over several decades of field, glasshouse and laboratory studies, yet the functional significance and mechanism of both remain obscure. W e studied the seasonal trends in plant water status and hydraulic properties in a natural stand of Eucalyptus gomphocephala through cycles of varying environmental moisture (rainfall, groundwater depth, evaporative demand ) in order to test for isohydry and to provide physiological information for the mechanistic interpretation of seasonal trends in plant water status. Over a 16-month period of monitoring, spanning two summers, midday leaf water potential correlated with pre-dawn …

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The Evaluation Of Midazolam On Head Injured Patients In The Prehospital Setting, Dragana Klinac Jan 2008

The Evaluation Of Midazolam On Head Injured Patients In The Prehospital Setting, Dragana Klinac

Theses: Doctorates and Masters

Midazolam (Hypnovel ®) is the only sedating agent used by paramedics at St John Ambulance Service W.A. in the management of many conditions including seizure activities, antisocial or uncontrollable behaviours, back pain incidents and head injuries. Midazolam, with a rapid absorption, fast onset of action and short duration on neurological activity, has been accepted as a safe and effective agent in prehospital treatment since the late-1990s. Often, if a patient is not complying with treatment or is uncontrollable or aggressive, paramedics are required to sedate the individual. This study primarily examines the use of midazolam for the sedation of unmanageable …

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