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Social and Behavioral Sciences Commons™
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Full-Text Articles in Social and Behavioral Sciences
Stream Sedimentation Patterns In An Urban Beaver System: Fanno Creek, Oregon, Alexandra Joan Santora
Stream Sedimentation Patterns In An Urban Beaver System: Fanno Creek, Oregon, Alexandra Joan Santora
Geography Masters Research Papers
Beaver activities can cause drastic changes to hydrogeomorphic processes by impounding waterways through the construction of dams, trapping sediments and reducing the downstream sediment load. The presence of beaver is increasing in urban areas. Urban streams exhibit hydrogeomorphic processes distinct from natural systems because of changes in land cover that alter hydrology. This case study was developed as part of an effort to understand the sedimentation patterns of a beaver impounded urban stream in Beaverton, Oregon. Twelve sediment samples were collected and processed for organic matter content and particle size and sediment depths were calculated using GIS software from data …
Environmental Justice And Gis: A Comparison Of Three Gis Methods For Estimating Vulnerable Population Exposed To Brownfield Pollution In Portland, Oregon, Kyle Goodman
Geography Masters Research Papers
This project compares three GIS techniques that estimate populations who are potentially affected by environmental contamination in Portland, Oregon. All three GIS techniques utilize polygon containment to estimate populations potentially exposed to pollutants based on block level census data. In this study, multiple buffer distances at half-mile increments were used across all three techniques. Circular Euclidean distance buffers surrounding a known contaminated property, such as documented brownfields, approximate the contamination zone. Accurate estimates for populations exposed to harmful environmental conditions could provide a better understanding of environmental justice issues. The specific research questions were: 1) Are the population estimates sensitive …
Shifting Wetland Policy And Perception In The Columbia Slough, Ryan Pemberton
Shifting Wetland Policy And Perception In The Columbia Slough, Ryan Pemberton
Geography Masters Research Papers
On the periphery of Portland, Oregon, at the confluence of the Willamette and Columbia rivers lies an expansive wetland, the Columbia Slough. Once a thriving wetland ecosystem nineteen miles long by three miles wide, the Slough has been drained, filled, and developed into a humanized landscape. The human experience of this landscape has always been about use: people make, move, and exchange things here. Few people actually live and play in this transformed wetland, and most would consider it a featureless, polluted, and otherwise valueless landscape save for the money to be made here. Yet remnants of the old, wild …