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 16 of 16 for “"animal activity"”.
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The use of animal activity data and milk components as indicators of clinical mastitis
… (R=0.47), respectively. Daily monitoring of animal activity and milk components can be used to detect mastitis prior to clinical onset. Data from 268 cases with clinical mastitis and respective controls (n=268) from Virginia Tech and the University of Florida dairy herds were examined. …
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Artificial Night Lighting and Anthropogenic Noise Alter Animal Activity, Body Condition, Species Richness, and Community Structure
… of background noise levels due to anthropogenic activity and skyglow, the scattering of artificial light by the atmosphere, extending hundreds of kilometers from the source. Despite a large body of work investigating the effects of light or noise pollution acting alone, relatively few studies …
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Blood host preferences and competitive inter-species dynamics within an African malaria vector species complex inferred from signs of animal activity around aquatic larval habitats distributed across a gradient of fully domesticated to fully pristine ecosystems in southern Tanzania
… Management Area with varying degrees of human activity, and Nyerere National Park (NNP), which had very little. To investigate the effects of potential host availability on the species composition of the complex, all direct observations, tracks and signs of humans, livestock and wild animals …
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The use of activity measures in combination with physiological factors as indicators of disease in dairy cattle
Animal activity, in combination with physiological factors, can be used for early disease detection in dairy cattle. An initial study determined the impact of flunixin meglumine (FM), a non-steroidal anti-inflammatory drug, on activity measures, dry matter intake (DMI) and milk production during …
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Regolith Erosion at Grinnell Glacier, Glacier National Park
… age, vegetation cover, local climate, and human/animal activity. Using repeat photography in conjunction with lab work I was able to determine that the Grinnell Glacier moraine’s crest is lowering at a much faster pace than previously published rates. Conservation policy within the park should be …
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Ventilation Behavior of the Mantis Shrimp, HEMISQUILLA ENSIGERA CALIFORNIENSIS IN HYPOXIC BURROWS
… Low pO<sub>2</sub> does not result in decreased animal activity, nor in movement of the animal toward the burrow entrance. <em>Hemisquilla ensigera</em> is capable of ventilating the burrow, but does not need to come to the entrance to do so. Ventilation is accomplished by prolonged pleopod …
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The Wind Cave National Park Elk Herd: Home Ranges, Seasonal Movements, and Alternative Control Methods
… method resulted in 1,431 instances of animal activity during 142 sampling sessions. Activity was recorded at 13 7 of the 940 sections of fence with varying frequency (range= 1 - 70). Total movement was nearly 50:50 (in= 582 [51%], out= 554 [49%], undetennined = 182, bitten= 113). Still …
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An investigation of social structure in housed dairy cows
… with corresponding impacts on yield and animal well-being. Social behaviour may provide a useful indicator of normal animal activity, and subsequent changes with health status, particularly if automatically monitored to reduce labour. This thesis applies a local positioning system (LPS) …
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Efficacy of an Electronic Scarecrow on 4 Mammalian Crop-Raiders in Limpopo Province, South Africa
… in Limpopo Province, South Africa. I used focal animal sampling data from treatment and control group animals to examine differences in activity budgets and behaviors of interest between groups. Compared to animals at sites with an inactive or no scarecrow, I hypothesized that animals in the …
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Reconstructing animal-vectored nutrient fluxes in paleoenvironments: A case-study of Aotearoa New Zealand’s burrowing procellariiforms
… cross-ecosystem flux of nutrients resulting from animal activity (animal-vectored subsidies) can significantly impact the communities receiving them. However, these functions are threatened by the ongoing decline and loss of species driving them. To understand ecosystem response to the loss of …
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Microbial and metazoan effects on nutrient dynamics during leaf decomposition in streams
… microbial nutrient cycling: N availability and animal activity. I used mesocosms to test the effects of consumer nutrient recycling (CNR) and grazing by two shredders on microbial uptake under different N regimes. Animals only influenced microbial uptake under low N conditions. Shredder CNR …
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Age, Stratigraphy and Depositional Environment of the Pliocene Copper Canyon Formation, Death Valley, California
… it constrains the timing of the most prevalent animal activity. Age, measurement of a type section, sedimentary petrology along with review of shoreline features and fauna/flora, establishes timing and interpretation of the depositional environment of the ancient Copper Canyon Lake. In addition, …
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Monitoring and modelling diurnal and seasonal odour and gas emission profiles for swine grower/finisher rooms
… temperatures, the ventilation rates and the animal units. The predicted results showed good agreement with measured values for most of OGCER (r2: 0.67-0.95). In order to improve odour and gas prediction models, animal activity and dirtiness of pens should be further investigated.
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Predicting suspended sediment in Illinois rivers using dimensionless rating curves
… to sediment suspension (ie. log jams, animal activity, low-flow crossings) all hinder the predictability of a single sediment rating curve for Illinois rivers. Further study on small watersheds or on multiple locations of a single watershed will help to limit variability in the model …
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Grazing impacts on sediment production and runoff from single and mixed species grazing
… of this study were to measure the effect of animal activity by monitoring selected soil characteristics/properties; and to characterize the soil properties that could be affecting water erosion and P movement in runoff water. The main hypothesis was that the single species grazing system …
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A continuous-time formulation for spatial capture-recapture models
… become the standard approach used to estimate animal density from capture-recapture data. It has in the past been impractical to obtain sufficient data for analysis on species that are very difficult to capture such as elusive carnivores that occur at low density and range very widely. Advances …