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Showing 1 to 20 of 58 for “"Post-glacial"”.
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Prehistoric Colonization of Southcentral Alaska: Human Adaptations in a Post Glacial World
… potential to inform about the human response to post-glacial landscapes but also for what we can learn about subsequent migrations to the southern coast of Alaska.Understanding how early foraging societies spread throughout eastern Beringia, after its initial colonization, requires new models for …
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Post-glacial rivers: Rates of development, utilization of inherited glacial features, and resulting morphology
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-09-01 without embargo terms
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The winds of change: A study of post-glacial dispersal in pacific-northwest conifers
… during the last glaciation and the present interglacial period. Such ""climate refugia"" allow pockets of diversity to persist within a regional climate that is otherwise inhospitable for those species. It is important to understand climate refugia, as they are potential targets for conservation. …
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Seafloor geology, deglacial history, and early post-glacial evolution of eastern Juan de Fuca Strait
… the stratigraphy in terms of the latest deglacial episode and associated sealevel change. The surficial geologic units comprise bedrock (unit 1), ice-contact diamicton (unit 2), glacial-marine sediments (unit 3), and post-glacial sediments (unit 4). Bedrock crops out near Vancouver Island, …
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Two Post-Glacial Sagebrush Steppe Fire Records at the Wildland-Urban Interface, Eastern Cascades, Washington
Recent increases in large fires in the rapidly developing wildland-urban interface (WUI) areas of central Washington, where development intermixes with wildland fuels, contribute to federal firefighting costs exceeding of $1 billion annually. In addition, cheatgrass (<em>Bromus tectorum</em>) …
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The late glacial and post glacial history of the Vale of Pickering and northern Yorkshire Wolds
… of these was to study the sedimentary data from glacial and pro-glacial deposits in the Vale of Pickering to assess their age and environment of deposition. The sediments were mapped in the field and analysed in the laboratory. A glacial outwash rather than lake-beach origin was proved for an …
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A Regional Synthesis of Post-Glacial Fire History in the Eastern Cascades, Washington, Using Macroscopic Charcoal Analysis
… objective was to develop a regional synthesis of post-glacial fire activity for the eastern Cascades using the seven existing charcoal-based records by developing a regional biomass burning curve, which was then compared to the existing PNW synthesis. Broad-scale trends in biomass burning in the …
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Post-Glacial Fire History of Horsetail Fen and Human-Environment Interactions in the Teanaway Area of the Eastern Cascades, Washington
… by dramatic shifts in climate since the last glacial maximum and more recently, by human activity. However, it is unclear how past relationships between people, fire, and climate interacted on the landscape. The purpose of this research was to reconstruct the post-glacial fire history of a …
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MOLECULAR AND MORPHOLOGICAL CONSEQUENCES OF POST-GLACIAL CONTACT AMONG LINEAGES OF NORTHERN SHORT-TAILED SHREWS (Blarina brevicauda) IN EASTERN NORTH AMERICA
<p>During the Pleistocene, advancing glacial ice fragmented populations of species, which restricted populations from expanding, ultimately inhibiting gene flow. As glaciers receded, expansion out of unglaciated-isolated areas was possible. In addition to glacial barriers, landscape features such …
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A Reconstruction of Post-Glacial Hydroclimatic Change and Mass Accumulation Rates from a Small Watershed of the Lower North American Great Lakes Region
… Primary productivity was steady throughout the post-glacial period until European settlement led to eutrophication. Similarly, catchment erosion was high following European settlement as well as during the late Pleistocene. This study demonstrates that vegetation cover buffered the catchment …
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Correcting heat flow data in the United States to account for climate change
… require correction for both recent warming and post-glacial warming signals. Warming during the last century can be detected in borehole temperature profiles. Both climate warming signals during the past century and post-glacial warming signals during the past 10 millennia are greatest near the …
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Comparative Phylogenetic Analysis in Populations of the Western Cottonmouth (Agkistrodon Piscivorus Leucostoma) Distributed in Three North American Drainage Basins
… Devender and Conant 2000). It is thought that post glacial dispersal patterns using stream corridors have resulted in the present biogeographic assemblage of populations in different drainage basins. Here I use the molecular marker mitochondrial cytochrome b in a molecular phylogenetic analysis …
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Comparative Phylogeography of Eastern Chipmunks and White -Footed Mice: Population Histories Since the Last Glacial Maximum
… DNA sequences of all P. leucopus indicated that post-glacial expansions into the region did not confound the analysis of microsatellite variation. This study provides important empirical data on the importance of urban development in disrupting evolutionary processes within natural populations.
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The late quaternary vegetational history of Holderness, Yorkshire
… plants into this country, particularly in Late-glacial and early Flandrian times, when the region was joined to the continent by dry land. As a distinct and somewhat isolated region of low-lying land which must have been rather waterlogged for much of Post-glacial time it would have provided a …
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The Neoproterozoic São Francisco Basin, central Brazil: tectonic evolution, paleoclimate, and mineral systems
… was punctuated by globally correlative Sturtian glacial deposits (ca. 717-660 Ma). Copious post-glacial organic matter and pyrite-rich siltstones formed during the subsequent passive margin stage. The overlying Bambuí Group is a Cryogenian-Ediacaran mixed biochemical-siliciclastic succession (ca. …
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High-Resolution Record of Vegetation and Climate Change During the Holocene in Southwestern Québec
… A high-resolution pollen record documents the post-glacial vegetation history of the region over the course of the Holocene. The record shows an initial open spruce woodland, the establishment of the boreal and mixed conifer-hardwood forest into the area, as well as the expansion and …
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Post-Orogenic Exhumation and Glacial Erosion on the Flanks of the North Atlantic
… In this dissertation the evolution of post-orogenic topography and the effect of glaciations on denuding landscapes along the North Atlantic Passive Margin, in the White Mountains of New Hampshire and the western Scottish Highlands, was investigated. Background exhumation rates averaged …
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Population genetic history of the British roe deer (Capreolus capreolus) and its implications for diversity and fitness
The first part of this study examined post glacial recolonisation by UK roe. Previous studies established three main roe deer lineages exist across Europe: a western (Iberian Peninsula), an eastern (Balkan region) and a central lineage (which spans across central Europe). It was unknown which group …
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