Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 3 of 3
Full-Text Articles in Entire DC Network
Exploration Of Stream Habitat Spatial Modeling; Using Geographically Weighted Regression, Ordinary Least Squares Regression, And Natural Neighbor Interpolation To Model Depth, Flow, And Benthic Substrate In Streams, Kenneth R. Sheehan
Graduate Theses, Dissertations, and Problem Reports
Assessment and modeling of stream habitat are integral to understanding streams and the biota within them. In the past several decades, assessment sophistication of ecologic systems increased due to analysis power afforded by gains in computing capability. Spatial data analysis methodology grew alongside computing power and incorporated spatial qualities of ecological data, thereby providing new insights. New methods like geographically weighted regression (GWR) and more established methods like interpolation are now being used in ecological studies to guide assessments and management decisions. However, their accuracy and utility for analysis of stream habitat data have not been fully explored. To clarify …
Mining And Residential Development Interact To Produce Highly Impaired Stream Conditions In An Intensively Mined Appalachian Watershed, Eric Richard Merriam
Mining And Residential Development Interact To Produce Highly Impaired Stream Conditions In An Intensively Mined Appalachian Watershed, Eric Richard Merriam
Graduate Theses, Dissertations, and Problem Reports
Large scale surface mining in southern West Virginia causes significant alteration of headwater stream networks. It is unclear, however, the extent to which mining interacts with other stressors to determine physical, chemical, and biological conditions in aquatic systems downstream. Through a watershed scale assessment of Pigeon Creek, the specific objectives of this study were to: (1) quantify the direct and interactive effects of mining and residential development on in-stream conditions; and (2) identify landscape thresholds above which biological impairment occurs. Our results indicate high levels of impairment to habitat, water quality, and benthic invertebrate communities within this watershed. Statistical analyses …
Ecological Responses Of Streams To Anthropogenic Stressors, And Watershed Cause-Effect Modeling In The Mid-Atlantic Highlands Region Of The United States, Yushun Chen
Graduate Theses, Dissertations, and Problem Reports
Urban sprawl and related habitat disturbance and acidic deposition are major anthropogenic stressors in the Mid-Atlantic Highlands region of the United States. Little information is available about the impacts of these stressors and cause-effect relationships between these watershed stressors and stream biotic/abiotic conditions in this region. A 10-year study (1997-2006) in the Lost River watershed and a 6-year study (2002-2007) in a South Branch Potomac River watershed were conducted to assess the impacts of Corridor H highway construction on stream biotic and abiotic conditions. Also, a three-decade study (1980-2006) using data from 5 wet deposition stations and 21 major stream …