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Showing 1 to 11 of 11 for “"Testate amoebae"”.
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Monitoring Peatland Damage and Restoration Using Testate Amoebae as Indicator Organisms
This thesis has examined the response of testate amoebae communities to restoration at three peatland sites in the UK. It builds upon the use of testate amoebae analysis as a palaeoenvironmental tool by exploring the hypothesis that testate amoebae respond to hydrological conditions in restored …
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Robustness and precision of Holocene palaeoclimatic records from peatlands using testate amoebae
… represents the first attempt to use quantitative testate amoebae (Protozoa: Rhizopoda) analysis to measure hydrological fluctuations in British peatbogs over the Holocene. Changes in the fossil species assemblage are used to reconstruct the mean annual water table records at different locations on …
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Holocene palaeohydrology from testate amoebae analysis: developing a model for British peatlands
Testate amoebae (Protozoa: Rhizopoda) are particularly abundant in peatlands. Previous studies have used testate amoebae in palaeoenvironmental studies, but have used qualitative data only, so that results are expressed only in terms of 'wet', 'dry' or 'moist'. This study uses testate amoebae to …
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Holocene sea-level changes in the Falkland Islands: new insights into accelerated sea-level rise in the 20th Century
… signal. This thesis also focused on developing testate amoebae as sea-level indicators. In the Falklands, testate amoebae transfer functions were able to reconstruct sea level with precision (±0.08 m) comparable to diatoms (±0.07 m). However, preservation issues were indicated in the fossil …
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Microbial diversity of a nature reserve: eukaryotic microorganisms of Mere Sands Wood in N.W. England
… is a new idea in nature conservation. Using Testate amoebae and Diatoms as model organisms, this study aimed at expanding the Wildlife Trust’s knowledge of biodiversity at its Mere Sands Wood Nature Reserve by describing and quantifying microbial diversity and distribution using traditional …
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HOLOCENE PALAEOCLIMATE RECONSTRUCTION FROM N EW ZEALAND PEATLANDS
… varying degrees of success, peat humification, testate amoebae, plant macrofossil and charcoal analyses contributed to determining the palaeomoisture records from three cores on each site. Climatic inferences have successfully been made for the Waikato region, mid North Island, over the period …
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Subarctic ecosystem responses to climate, catchment and permafrost dynamics in the Holocene
… matter and carbonate content, mosses, diatoms, testate amoebae, pigments, carbon and nitrogen and their stable isotopes, near infrared spectroscopy and biogenic silica. Results revealed that the structural development of the mire occurred during the later part of the Holocene. Peat inception was …
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Palaeohydrology and archaeology in raised mires: a case study from Kilnagarnagh
… stratigraphic and archaeological field survey, testate amoebae, plant macrofossil and colorimetric humification analyses and radiocarbon dating.A Bronze Age wooden walkway in Kilnagarnagh Bog and a series of trackways from neighbouring bogs provide the archaeological focus of this study. It is …
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Keeping above the waves? The response of coastal freshwater peatlands to sea-level rise
… 210Pb dating, loss on ignition, bulk density, testate amoebae, diatoms, foraminifera, peat macrofossil components, ecohydrological monitoring, sea level projections, and mapping. Two UK sites are investigated: Cors Fochno, a coastal raised bog in mid-Wales, and Wheatfen, an estuarine floodplain …
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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
… density values from both study sites, whereas testate amoebae analysis was applied on cores from Undarsmosse bog only. Pollen analysis was carried out to reconstruct vegetation and land use changes. In addition the hypothetical regional scale vegetation composition around the Store Mosse bog …
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An Isotopic Analysis of Carbon Dynamics in Sphagnum Peat
Methane and carbon dioxide produced in peatlands can be held temporarily in dissolved surface waters and accessible to aquatic plants. The primary peat building plant in northern peatlands, Sphagnum moss, grows in these dissolved carbon rich waters. Understanding Sphagnum carbon cycles is key for …