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 39 for “"Seasonal Dynamics"”.
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Smallmouth Bass Seasonal Dynamics in Northeastern South Dakota Glacial Lakes
… this study were to 1) determine monthly sampling dynamics and size structure of smallmouth bass in four northeastern South Dakota glacial lakes, 2) determine the seasonal diets of smallmouth bass in four northeastern South Dakota glacial lakes, and 3) quantify and compare prey consumption among …
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The seasonal dynamics of Arctic surface hydrology in permafrost environments
… it has become common practice to explore lake dynamics, using these as indicators of permafrost change; dynamics being the keyword. Surface hydrology is a dynamic process. Discharge studies in the Arctic and sub-Arctic regions are associated with flashy hydrographs. Currently, however, remote …
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Seasonal dynamics of edaphic bacterial communities in the hyper-arid Namib desert
… to investigate the edaphic bacterial community dynamics over short (57 days) and long-term (1 year) sampling intervals using an extensive sampling strategy in combination with community fingerprinting by T-RFLP analyses and micro environmental characterization. The short-term study was conducted …
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Seasonal dynamics of edaphic bacterial communities in the hyper-arid namib desert
… of edaphic bacterial community in response to seasonal microenvironmental variation in the Namib Desert gravel plains has never been investigated in situ.The edaphic bacterial community dynamics were evaluated over short (57 days) and long-term (1 year) sampling intervals using an extensive …
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Diel and seasonal dynamics of Anaulus australis at Muizenberg Beach, South Africa
… timeseries dataset was collected to establish seasonal patterns in surf zone diatom patches. Photographs of the Muizenberg surf zone at 12-minute intervals were taken for two years (2019-2021) and analysed using machine learning image analysis techniques. Data on the presence of A. australis …
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Seasonal and intra-seasonal dynamics and precursors of rainfall over northern Tanzania
… and variability of inter-annual and intra-seasonal circulation anomalies and their precursors are investigated over northern Tanzania. Area rainfall departures are computed in the period 1960-1990 and wet and dry years are identified. Northern Tanzania experiences bimodal rains centred on …
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Seasonal Dynamics of Avian Influenza Viruses in Ring-billed Gulls (Larus delawarensis) in Minnesota
… (LPAIVs), but their role in the transmission dynamics of highly pathogenic avian influenza viruses (HPAIVs) is unclear. The novel reassortant HPAIV H5N2 that emerged in Minnesota in 2015 was devastating to the poultry industry, resulting in significant financial losses and destruction of …
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Investigating the distribution, seasonal dynamics and toxicity of Azadinium spinosum in Scottish waters using qPCR
… waters to survey A. spinosum abundance and seasonality. The limit of detection of the method was found to be 2000 ±5600 cells L-1, however it is unclear whether this is adequate for regulatory monitoring because it is not yet understood how cell density in the water column relates to AZA …
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Seasonal dynamics in costal aquifers : investigation of submarine groundwater discharge through field measurements and numerical models
… that drive it, with a specific emphasis on seasonal forcing. Field measurements during five summers in Waquoit Bay, Massachusetts reveal the pattern and composition of submarine groundwater discharge. Flow is highly variable over small spatial and temporal scales, and the salinity and radium …
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The phytoplankton communities of nine lakes, Waikato, New Zealand: a comparative study of floristics, seasonal dynamics and the influence of herbivory
The structure and seasonal dynamics of the phytoplankton communities of nine shallow lakes located in relatively close proximity to one another within the Waikato Basin, and of similar age and origin, were studied for one year (July 1983 to July 1984); the lakes were Kainui, Mangahia, Mangakaware, …
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Seasonal Dynamics of Productivity and Photosynthesis of Three Biofuel Feedstocks: Field Comparisons of Miscanthus X Giganteus, Panicum Virgatum and Zea Mays
… in southern Illinois. The first comparison of seasonal dynamics of below-ground biomass of mature M. x giganteus and P. virgatum stands over three consecutive growing seasons showed that on average, M. x giganteus has nearly double the amount of below-ground biomass than P. virgatum; the …
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High-frequency sensor data capture short-term variability in Fe and Mn cycling due to hypolimnetic oxygenation and seasonal dynamics in a drinking water reservoir
… (Mn) in lakes and reservoirs have predictable seasonal trends, largely governed by stratification dynamics and redox conditions in the hypolimnion. However, short-term (i.e., sub-weekly) trends in Fe and Mn cycling are less well-understood, as most monitoring efforts focus on longer-term (i.e., …
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The status and seasonal dynamics of fish and benthic invertebrate populations in relation to organic and inorganic material inputs and surface mining impacts in three Virginia headwater streams
Study of two streams impacted by surface-mining and a similar unimpacted reference stream demonstrated that alkalinity, conductivity, hardness, and sulfate were elevated in the former despite reclamation treatment of the watersheds three to five years earlier. The mined-watershed streams carried a …
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Quantifying structural change in UK woodland canopies with a dual-wavelength full-waveform terrestrial laser scanner
… was to improve the characterisation of the seasonal dynamics of UK woodland vegetation structure using the Salford Advanced Laser Canopy Analyser (SALCA), a research TLS with dual-wavelength full-waveform capabilities.There were three key objectives to this research: (1) the development of a …
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Multispectral canopy reflectance and digital imaging to determine maturity
… stages. To better predict developmental stages, seasonal dynamics of soybean canopies were characterized using canopy reflectance and digital imaging tools. Field experiments were conducted in 2014 and 2015 at two Missouri locations to characterize canopy characteristics of six commercial soybean …
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A crop phenology model for Windows
… purposes. The model can be used to study seasonal dynamics of crop and weed canopies which are important in controlling crop photosynthesis, evapotranspiration, rainfall interception, soil erosion and crop-weed competition. The software was developed based on the field experimental data …
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Analysis of artifacts from four Duke Point area sites, near Nanaimo, B.C. : an example of cultural continuity in the southern Gulf of Georgia region
… as relatively minor cultural changes, given the seasonal dynamics of the coastal environment, suggest cultural continuity. Conversely, where discontinuity is not readily apparent, and where proportional changes in artifacts between components rather than actual artifact class differences are in …
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Bovine Coccidiosis: Dynamics of infection in grazing cattle and the potential role of stress and immunity
… cattle worldwide. Information on the infection dynamics of these parasites is lacking in the central Appalachian region of the United States. Studies aimed at characterizing the seasonal dynamics of eimerian parasites in this region were carried out in order to assess the impact of these …
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Spatial and Temporal Influences of Water Quality on Zooplankton in Lake Texoma
… a second study from March 1999 to June 1999. Seasonal dynamics, rather than spatial dynamics, were more important in structuring the zooplankton community, especially in the two river arms. Spatial variance was solely attributed to station and zone effects independent of time for a few …
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Satellite indices of fluvial influence in coastal waters
… indices are employed to map the seasonal spatio-temporal variability of the Mississippi's sediment plume in the presence of discharge and wind stress fields. Here it is shown that: (1) the IFI techniques are useful for tracking terrestrial constituents delivered by the …
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