Graduate Project

 

The impact of land management decisions on dune processes on the Clatsop Plains: a case study of Camp Rilea, Oregon Public Deposited

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https://ir.library.oregonstate.edu/concern/graduate_projects/6395w782f

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  • This project explores the impact of land use decisions on dune processes at the Oregon National Guard's Camp Rilea. located on the north coast of Oregon. It used a combined analysis of historical and modern data sources to assess the impact of land use practices. Historical sources including the journals of Lewis and Clark and local newspaper articles were used to determine dune condition during the nineteenth century. Aerial photographs were used to track the changes in vegetation occurring during the twentieth century. This study indicates that the dune area was stabilized by native grass during the early 1800's and was disrupted during the latter half of the century by cattle grazing and construction of the Columbia River jetties. Activated dunes moved into developed areas burying homes, roads and buildings. In response to the moving sand, a massive biostabilization project was completed during the 1930's to halt dune movement. The resulting landscape is characterized by a new geomorphology and floristic distribution that reflect the impact of the introduction of high densities of plants for the biostabilization project. The final component of this project was the determination of alternate land management options for Camp Rilea that could enhance alternate land management goals including: minimization of exotic plant species, maximizing threatened and endangered species. maximum military training diversity and no action.
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  • File scanned at 300 ppi (Monochrome, 256 Grayscale, 24-bit Color) using Capture Perfect 3.0 on a Canon DR-9050C in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
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