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.
Results
Showing 1 to 20 of 110 for “"Edaphic"”.
-
Seasonal dynamics of edaphic bacterial communities in the hyper-arid Namib desert
The aim of this study is 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 …
-
Seasonal dynamics of edaphic bacterial communities in the hyper-arid namib desert
… which collectively impose constraints on edaphic microbial communities. Several studies in the Namib Desert have investigated changes in soil microbial communities across space. However, the temporal variation of edaphic bacterial community in response to seasonal microenvironmental …
-
Mycotoxins Risk in Maize Fields in Relation to Insect and Edaphic Factors in South Dakota
… of insect abundance, insect kernel damage and edaphic factors with mycotoxin concentrations in conventional and Bt maize were investigated in eastern South Dakota during 2008 through 2010. Caterpillar abundance and kernel damage were positively related to fumonisin and aflatoxin concentrations …
-
Climatic and edaphic influences on the radial growth of eastern redcedar (Juniperus virginiana), Smoke Hole Canyon, West Virginia
The annual variability observed in tree-ring records has been used to reconstruct climate conditions at the local, regional, and global scales. Dendrochronology, the study of tree rings, has typically focused on locations where trees are limited by a single climatic variable (i.e. temperature or …
-
Effects of Water Table Depth and Edaphic Characteristics on Plant Diversity in a Southern Mississippi Pitcher Plant Bog
<p>This study examined the effects that water table depth and soil characteristics have on plant species richness and species composition within pitcher plant bogs across seasons. Eight piezometers were installed at random distances to monitor long-term water table depth and pressure fluctuations …
-
Edaphic factors and rhizobia influence the distribution of legumes (Fabaceae) in the Core Cape Subregion of South Africa
… In this thesis, it was hypothesized that edaphic factors (soil chemical and physical characteristics) and the distribution of rhizobia have influenced legume distributions in the CCR landscape. The influence of edaphic factors on the distribution of legume species assemblages in the Cape …
-
Phylogenetic relationships and the effects of edaphic heterogeneity on the distribution of Wiborgia (Fabaceae) in the Greater Cape Floristic region
The Greater Cape Floristic Region (GCFR) is divided into two subregions, the Core Cape Subregion (CCR) and Extra Cape Subregion (ECR), which are mainly characterized by Fynbos and Succulent Karoo biomes, and are recognized among global biodiversity hotspots. The soils in the ECR are mostly shale …
-
Edaphic, Microtopographic, and Light Characteristics Associated with the Endangered Running Buffalo Clover (Trifolium stoloniferm) at the Blue Grass Army Depot, Madison County, Kentucky
<p>Soil, microtopographic, and light parameters associated with federally endangered running buffalo clover (<italic>Trifolium stoloniferum</italic>) plants on the Blue Grass Army Depot, Richmond, KY, were examined during the 2004 and 2005 growing season. Study samples or measurements were …
-
Lithologic, edaphic, and biotic factors of small mammal habitats in the slate belt of Western Rutland County, Vermont, and Eastern Washington County, New York
<p>Previous trapping in the slate belt, including both Rutland County, Vermont, and Washington County, New York, has indicated a relative paucity of small mammalian species. There are also rather low populations levels of those mammals present when compared to other regions in Vermont and nearby …
-
Predicting Plant Zonation in the Salt and Brackish Marshes of Georgia
… of this research was to characterize selected edaphic variables for salt and brackish marshes and determine whether or not there were significant differences between the two marsh types based on these parameters. Brackish marshes are positioned at higher elevations, with lower salinities, and …
-
Coffee, fertilizer, and the pursuit of sustainable farming: Understanding edaphic context to improve nutrient management strategies for smallholder coffee production in a volcanically active region
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-05-01
-
Testing alternative stable state theory at Afromontane and Milkwood forest-fynbos ecotones
… maintained by biotic feedbacks that result in edaphic differences between the contrasting ecosystems. Anthropogenic modifications to disturbance regimes alter the stability of forests and fynbos and may shift forest and fynbos into a degraded species-poor state. Conservation practitioners are …
-
Thymus pulegioides chemotipai Lietuvoje: paplitimas, edafinių ir klimatinių salygų įtaka, alelopatinės savybės /
… (Thymus pulegioides) in Lithuania, influence of edaphic and climatic factors on quantitative and qualitative composition of essential oils, as well as allelopathic and autoallelopathic effect of different chemotypes were studied in this work. It was established that carvacrol was most abundant …
-
Elemental content to rice grain related to growing regions and soil microbiology
… rice, based on the growing regions linking with edaphic and microbial factors that would regulates those variabilities. Paddy soils and associated paddy samples were collected from various geographical locations ana analyzed for trace elements and As species in those samples. Soil and porewater …
-
Tree community assembly and biogeochemical processes along an elevational gradient in western Panama
… in our understanding of the effect of climate, edaphic and biotic interactions in plant community assembly and biogeochemical processes. Changes in environmental and biotic conditions are expected to influence tree diversity, floristic composition, nutrient and C cycling. My dissertation …
-
Rhizobia diversity and their effect on the distribution of indigenous legumes in the Cape Floristic Region
… and limestone thereby creating heterogeneity in edaphic conditions. Species composition of plant communities in the CFR is predominantly associated with the parent rock, and the resultant overlying soil. The combination of edaphic and topographical variations, local climate gradients and frequent …
Page 1 of 6