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 53 for “"bogs"”.
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Nocturnal Lepidoptera of Midland Raised Bogs
Raised bogs started to form in Ireland at least 7000 years ago when peat started to accumulate in water-filled depressions left after the last glacial period. Due to centuries of damaging human activities, only 1% of the living, growing active raised bog habitat remains and this is rapidly being …
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Deposition and fate of trace metals in Finnish bogs and implications for the use of bogs as geological archives
Vier Probenahmestellen mit bekannter atmosphärischer Spurenmetall-Deposition wurden beprobt: Hietajärvi (HIJ) als Referenz für die Hintergrundbelastung; Outokumpu, in der Nähe einer ehemaligen Cu-Ni-Mine; Harjavalta (HAR), nahe eines Cu und Ni Hüttenwerks und Alkkia, wo 1962 in einer Feldstudie …
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Fate of natural and anthropogenic particles in peat bogs
… of anthropogenic and natural particles in peat bogs, to see which geochemical processes can affect the suitability and accuracy of peat bogs as archives of atmospheric deposition, and also the effects of these inputs on the bog ecosystem. To test whether peat bogs are accurate archives of Pb …
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Weathering below Irish blanket bogs and impacts on carbon dynamics
This research investigates CO2 consumption by chemical weathering related to mineral soils and bedrock underlying peatland catchments in Ireland via measurement of major ion fluxes and runoff. Influence of peatland condition and substrate composition is investigated by comparison of catchments with …
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Toward Conservation of Magnolia Bogs on Utility Rights-Of-Way: Increasing Imageability
Magnolia Bogs are a rare wetland type known only to the gravelly sands of the inner Chesapeake Bay watershed. Scattered across upland landscapes just east of the fall-line, these habitats occur where lenses of clay intersect the rolling terrain and groundwater seeps along the faces of hillsides. …
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Determination of Arsenic and Arsenic Species in Ombrotrophic Peat Bogs from Finland
… (As) has been preserved in ombrotrophic peat bogs from Finland. The changing rates of atmospheric As deposition have been reconstructed using peat cores from three Finnish bogs: Harjavalta (Har), nearby a Copper (Cu) - Nickel (Ni) smelter, Outokumpu (Out), near a famous Cu-Ni mine, and a peat …
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Taxonomic and Phylogenetic Diversity of Pitcher Plant Bogs in Georgia's Coastal Plain
… community assembly patterns. Pitcher plant bogs are highly diverse, highly understudied habitats that contain numerous listed and at-risk plant and animal species of Georgia.</p> <p>In this study I investigated the taxonomic and phylogenetic diversity of pitcher plant bogs by asking the …
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Disturbance in Small, Fragmented Peat Bogs and its Contribution to Iris pseudacorus Colonisation
Peat bogs are of global importance as carbon sinks and hotspots of biodiversity. In British Columbia, some peat bogs such as the Galiano Island Ecological Reserve are fragmented by the construction of roadways (Cook Road). This construction impacts the dynamic of the bog, which is also affected by …
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Amphibian Habitat Usage of Two Restored Bogs in Shady Valley, Johnson County, Tennessee.
<p>Adjacent terrestrial habitat surrounding wetlands are critical for the survival and success of many species that use them. The primary purpose of this study was to determine amphibian movement from adjacent habitats into Orchard Bog, a restored bog located in Shady Valley, Johnson County, …
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Restoration of lowland raised bogs damaged by peat extraction - with particular emphasis on Sphagnum regeneration.
… sites may differ significantly from undisturbed bogs with implications for Sphagnum growth. Water samples from a peat field at Thorne Moors were comparatively acidic and contained comparatively high concentrations of most major ions (particularly NH4 and SO4), except phosphorus. Moderate nutrient …
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Simulating eco-hydrological feedbacks and resilience of blanket bogs in the context of climate change
Blanket bogs, a type of peatland, are a globally rare yet significant ecosystem which stores large quantities of carbon, supports biodiversity, and regulates local hydrology. Their carbon sequestration is a result of persistently shallow water tables, cool climates, and low nutrient availability, …
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EFFECTS OF NITROGEN DEPOSITION ON BOREAL BOGS: A THREE YEAR NITROGEN FERTILIZATION AND TRACER EXPERIMENT
… in global C and nutrient cycling. Oligotrophic bogs are naturally nitrogen (N) limited, receiving nutrients only via atmospheric deposition. Increased nutrient deposition, particularly N will almost certainly change the microbiology, biogeochemistry, and C and nutrient balances in bogs. Both …
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The role of microtopography in the assessment of ecological condition on lowland raised bogs of conservation importance
The principal aim of this thesis is to investigate relationships between the hydrology, ecology and vegetative microtopography of lowland raised mires, using data collected from two sites in Cumbria: Bolton Fell Moss and Walton Moss. The sites were chosen for study as they provided a contrast …
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Stormy records from peat bogs in south-west Sweden : implications for regional climatic variability and vegetation changes during the past 6500 years
… during the past 6500 years. Two ombrotrophic bogs, Store Mosse and Undarsmosse, situated on the coastal plain of Halland, were selected for this purpose. The coastal plain of Halland is positioned in the cyclone path and is therefore particularly sensitive to changing cyclone frequencies and …
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Kinematics and Stellar Populations in Brightest Cluster Galaxies
… and derived parameters for this sample of BOGs and those of large samples of ordinary elliptical galaxies in the same mass range. The derived properties were tested for possible correlations with the internal properties of the galaxies (mass and luminosity) and the properties of the host …
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Testing the late-Holocene climate signal from ombrotrophic bogs in southernmost Chile and the Falkland Islands: a multi-proxy, multi-profile and multi-site approach
Peatlands in Southern South America (SSA), in the path of the Southern Westerly Wind belt (SWW), offer the potential of reliable palaeoclimate archives. This investigation aimed to test the late-Holocene climate signal related to variability of the SWW. Three sites were investigated: San Juan and …
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The molecular ecology of Vaccinium macrocarpon Aiton, the American cranberry
… dwarf shrub, is a dominant taxon in temperate bogs in North America. It spreads clonally by runners, and reproduces sexually predominantly by self-fertilization on upright stems. The objective of this project was to investigate genetic and clonal variation and phenotypic plasticity of V. …
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A Bog Approach: An Ethnography, Or, An Anthropology Of Climate Emergency
… actors intersect on “The Flow Country” blanket bogs in the far north of Scotland. The Flow Country is the premier site of the UK’s large scale “forest-to-bog” peatland restoration project, one of the few “natural climate solutions” enacted and institutionalized. My fieldwork (2017-2018) …
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The Development of a Hydrological Buffer Zone Strategy for Designating the Mesotope Protection Zone of Raised Mire Systems
… concerning the management of raised bogs for future sustainability, and specifically to provide a tool to identify the extents and locations of those areas around the bog margins within which water tables need to be managed. Undesirable water losses resulting from damage to peripheral …
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