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 “"seasonal fluctuations"”.
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Physiological response of grazing horses to seasonal fluctuations in pasture nonstructural carbohydrates
… (NSC) have been shown to fluctuate diurnally and seasonally throughout the year due to various factors including environmental conditions and plant stress. The intake of elevated NSC content is linked with metabolic and digestive diseases, including colic and laminitis. A yearlong grazing study …
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Effects of light and temperature on nitrogen-fixation rates in arable soils and seasonal fluctuations in nitrogen-fixation rates in arable soils
Nitrogen-fixation rates were determined by C₂H₂ reduction in intact cores taken from the top 0-1 cm of two soils. The cores were moistened and incubated under varying light (0-88 W•m⁻²) and temperature (7.5- 39.5ºC) conditions at four different times of the year to determine the effects of day …
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The Stabilizing Effects of Sesame Oil Extraction Technologies on Seasonal Fluctuations in Food Consumption and Nutritional Status of Rural Farming Households in The Gambia
… ram press technology experience much less of a seasonal fluctuation in food consumption than those without ram press technology. Findings of this study also indicate that when women are given choices as to which technology is best for them, they will maximize their benefits from the available …
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ΔΟΜΗ, ΔΥΝΑΜΙΚΗ ΚΑΙ ΔΙΑΧΕΙΡΙΣΗ ΤΩΝ ΕΡΗΜΩΝ ΑΣΦΟΔΕΛΩΝ ΤΗΣ ΘΕΣΣΑΛΙΑΣ
… DESERTS IN THESSALY WAS RECORDED AS WELL AS ITS SEASONAL FLUCTUATIONS AND THE MEAN DENSITY (8 IND/M2) AND THE DISTRIBUTION PATTERN OF A.MICROCARPUS WERE DETERMINED. THROUGHOUT THE PERIOD OF A YEAR, THE PHENOLOGICAL CYCLE OF ASPHODELS PRESENT FOUR DISTINCT PHASES: THE MORPHOLOGICAL AND FUNCTIONAL …
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Changes in the invertebrate populations, fish populations, and water chemistry of a small stream above and below two impoundments
… of energy dynamics. The alterations were seasonally dependent, and may have resulted from interception of larger particle organic matter being transported downstream and its replacement by finer organic matter. The alterations manifested themselves in changes in numbers and biomass of …
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WATER QUALITY AND WATERBORNE DISEASE ALONG THE NIGER RIVER, MALI: A STUDY OF LOCAL KNOWLEDGE AND RESPONSE
… quality and waterborne diseases in relation to seasonal changes in the Niger River Inland Delta. The study draws on field data collected in four villages along the Niger River in the Mopti district of Mali during September 2008. The major findings suggest: (1) water use behaviors and diarrheal …
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WATER QUALITY AND WATERBORNE DISEASE ALONG THE NIGER RIVER, MALI: A STUDY OF LOCAL KNOWLEDGE AND RESPONSE
… quality and waterborne diseases in relation to seasonal changes in the Niger River Inland Delta. The study draws on field data collected in four villages along the Niger River in the Mopti district of Mali during September 2008. The major findings suggest: (1) water use behaviors and diarrheal …
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Ecology of Soil Collembola from Fontenelle Forest
… and describing variances in the daily and seasonal fluctuations that occur. Ecologists have attempted, in some instances, to combine and describe these interactions as they affect Collembola populations. In other instances, an individual factor of the environment was measured in an effort …
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Seasonal Variation in Desert Tortoise Immune Function
… this species is necessary. We analyzed minimal seasonal fluctuations in innate immune function and white blood cell numbers in a colony of captive, healthy tortoises. Bacteriocidal assays measured the ability of constitutive natural antibodies and complement proteins to kill a standard strain of …
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Distribution and abundance of soft-sediment intertidal Polychaetes
… work of such interactions. This study documents seasonal changes in the abundance of the polychaete component of the intertidal community. Attention is directed at possible factors that might affect seasonal changes in distribution. A major finding is that certain herbivorous polychaetes exhibit …
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The Use of Fallback Foods in a Population of Black Handed Spider Monkeys at Runaway Creek Nature Reserve, Belize
Seasonal fluctuations in preferred food availability cause some non-human primate species to occasionally rely on less-preferred food types, called fallback foods. Periodic reliance on fallback foods has led, in some cases, to the evolution of morphological traits geared towards their exploitation. …
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The Delayed Entry Program's effects on initial entry training attrition
… system of recruits which acts to smooth out the seasonal fluctuations in demand for lET soldiers. This study investigates the relationship between the time an individual spends in the DEP and the risk of becoming a loss during the initial entry training (lET). Furthermore, it explores other …
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The impact of nonpoint source pollution from mining wastes on water quality, Elko County, Nevada
… Electrical conductivity of the water exhibits seasonal fluctuations, with high values occurring in association with both snowmelt in the spring, and increased precipitation in the fall. Mass loading of dissolved constituents was found to be controlled by river discharge. Many of the deleterious …
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Evidence of Hydro-Seismicity in the Tennessee Seismic Zone
… of hydro-seismicity occurring in the ETSZ from seasonal fluctuations in reservoir level and discharge flow.
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Analysis of corn harvesting and grain handling systems in northeastern Virginia
… determined. A model for approximating the seasonal movement of prices was developed and used to predict the variability in the historical average price in the area. An enterprise budget was presented as an example for preparing budgets and estimates for specific farm situations with …
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Daugiamačiai jungtimis grįstų sveikareikšmių laiko eilučių modeliai: teorija ir taikymai /
… out. Integer-valued time series can also exhibit seasonal fluctuations. A univariate integer-valued autoregressive process for seasonality with period d (SINAR(1)_d) is introduced in this thesis, which allows for intra-seasonal dependence of the innovations to be described by a copula. Such a …
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Analysis of the structure of the immature insect segment of a stream riffle community
… so that hatching times were staggered. Seasonal fluctuations in the insect segment of the community were illustrated by changes in the total number of individuals and total biomass. The fluctuation were attributed primarily to the life histories of the component species. Species …
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Harvesting effects on the hydrology of wet pine flats
… a uniform pattern throughout the sites with seasonal fluctuations between 5 and 75 cm below the soil surface. The uniform pattern and poor inherent drainage of the site prior to harvest was due to lack of surface topography and impedance of internal vertical drainage by a restricting Btg soil …
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Sources of CO<sub>2</sub> Controlling the Carbonate Chemistry of the Logsdon River, Mammoth Cave, Kentucky
… input to the karst system in the context of seasonal variation. Seasonal fluctuations were found to be greatest in the near surface sample site, Crowbar Dome. Attenuation of seasonal variation of CO<sub>2</sub> pressures in the upstream Logsdon River S-188 Sump suggests both surface inputs …
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Seasonal dietary composition of the eastern coyote (Canis latrans) on the berry college campus in Northwestern Georgia
… birds (3.3%), and reptiles (1.5%). Significant seasonal fluctuations of prey items/prey classes were found (P<0.0001). Rodents (predominantly the Family Muridae) were most common in spring, vegetation (predominantly persimmons) occurred most frequently in fall, and arthropod consumption …
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