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- Atmospheric deposition -- Pacific Northwest (1)
- Birds -- Effect of wind power plants on (1)
- Brower (1)
- Conifers -- Regeneration -- Cascade Range (1)
- Conservation of natural resources -- Washington (State) -- Stehekin River Valley (1)
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- Coypu -- Habitat -- Pacific Northwest (1)
- Dam retirement -- California -- Lassen Volcanic National Park -- Case studies (1)
- Dam retirement -- Environmental aspects -- California -- Lassen Volcanic National Park -- Case studies (1)
- David (1912-2000) (1)
- English ivy -- Environmental aspects -- Pacific Northwest (1)
- Geospatial data (1)
- Introduced animals -- Ecology -- Pacific Northwest (1)
- Invasive plants -- Pacific Northwest (1)
- Meadow ecology -- Cascade Range (1)
- Mountain meadows -- Cascade Range (1)
- Nitrogen compounds -- Environmental aspects -- Pacific Northwest (1)
- North Cascades National Park (Wash.) -- History (1)
- Pacific (1)
- Revegetation -- California -- Lassen Volcanic National Park -- Case studies (1)
- Soil restoration -- California -- Lassen Volcanic National Park -- Case studies (1)
- Timberline (1)
- Urban pests -- Control -- Pacific Northwest (1)
- Wind power -- Environmental aspects (1)
- Wind turbines -- Environmental aspects (1)
- Wood -- Deterioration -- Cascade Range (1)
Articles 1 - 6 of 6
Full-Text Articles in Life Sciences
Soil Development And Vegetation Response To Removal Of A Small Dam, Lassen Volcanic National Park, California, Stephanie Kay Rohdy
Soil Development And Vegetation Response To Removal Of A Small Dam, Lassen Volcanic National Park, California, Stephanie Kay Rohdy
Dissertations and Theses
Dam removal is increasing as dams age, yet little is understood about the pedogenic response to dam removal. This study reports on the edaphic changes of reservoir sediments and vegetation cover one year following removal of a small earthen dam in Northern California. In August 2012, I sampled surface sediments from the former Dream Lake reservoir in Lassen Volcanic National Park, and compared their physical and chemical properties with soil samples from two reference sites. I also estimated percent cover of vegetation in the former reservoir and reference sites. My results show that the reservoir was under reduced conditions, as …
The Role Of Wood Microsites At Timberline-Alpine Meadow Borders For Conifer Regeneration, Adelaide Chapman Johnson
The Role Of Wood Microsites At Timberline-Alpine Meadow Borders For Conifer Regeneration, Adelaide Chapman Johnson
Dissertations and Theses
This research aimed to determine whether wood microsites ("nurse logs"), which are regeneration sites in Pacific Northwest (PNW) subalpine forests, supported regeneration at timberline-alpine meadow borders. Upward advance of forests and conifer invasion into alpine meadows, which may be occurring in conjunction with climate warming, have gained worldwide attention. Successful alpine meadow seedling regeneration depends on suitable substrate availability, or microsites, for seedling establishment. To better understand factors associated with wood microsite occurrence, mechanisms of wood input were determined and four specific hypotheses were posed to assess: (1) seedling density and seedling survival; (2) growing season length, summer mean growing …
Preserving Nature Through Film: Wilderness Alps Of Stehekin And The North Cascades, 1956-1968, Nicolas Timothy Bergmann
Preserving Nature Through Film: Wilderness Alps Of Stehekin And The North Cascades, 1956-1968, Nicolas Timothy Bergmann
Dissertations and Theses
On March 22, 1958 David Brower's film Wilderness Alps of Stehekin premiered to an audience of conservationists in Seattle, Washington. Almost two years in the making, the thirty-one minute film advocated the preservation of nature in Washington's North Cascades through the creation of a national park. Over the next decade, Wilderness Alps of Stehekin became the most influential publicity tool in the struggle to preserve the North Cascades. Because of the region's geographic isolation, the film was the first time many people throughout the nation were exposed to the scenic grandeur of the area. Images of craggy peaks and colorful …
Application Of Gis And Spatial Analysis Of Golden Eagle Fatalities Caused By Wind Turbines At The Altamont Pass Wind Resource, Andrew James Pinger
Application Of Gis And Spatial Analysis Of Golden Eagle Fatalities Caused By Wind Turbines At The Altamont Pass Wind Resource, Andrew James Pinger
Dissertations and Theses
The Altamont Pass Wind Resource Area (Altamont) near Livermore, California is the oldest and largest wind farm in the United States. It is known as a location of high avian mortality, especially for diurnal raptors such as the Golden Eagle (Aquila chrysaetos). Using the avian monitoring data collected at Altamont for over thirteen years (1998-2003, 2005- 2011), records were analyzed of 134 golden eagle deaths caused by wind turbine collisions. All wind turbines present during the same temporal range were characterized according to turbine variables, and geographic placement characteristics. Values of turbines that killed golden eagles were compared to values …
Effects Of Increased Nitrogen Deposition On The Dominance Of Hedera Helix In The Pacific Northwest, Bianca Christine Dolan
Effects Of Increased Nitrogen Deposition On The Dominance Of Hedera Helix In The Pacific Northwest, Bianca Christine Dolan
Dissertations and Theses
Increased nitrogen deposition has been shown to promote the dominance of invasive species, and nitrogen deposition rates have steadily increased in most of the Western United States in recent years due to population increases. The purpose of this study was to determine if increased rates of nitrogen deposition are contributing to the success of Hedera helix in the Pacific Northwest. Plots were established in Lesser Park in Portland, Oregon and received monthly treatments of ammonium nitrate for one year. Growth, measured as change in percent cover, was compared between treated and untreated plots for both H. helix and native species. …
Status Of Nutria (Myocastor Coypus) Populations In The Pacific Northwest And Development Of Associated Control And Management Strategies, With An Emphasis On Metropolitan Habitats, Trevor Robert Sheffels
Status Of Nutria (Myocastor Coypus) Populations In The Pacific Northwest And Development Of Associated Control And Management Strategies, With An Emphasis On Metropolitan Habitats, Trevor Robert Sheffels
Dissertations and Theses
The nutria (Myocastor coypus) is a semi-aquatic rodent native to South America that was introduced to the Pacific Northwest, USA, in the 1930s. Primary damage categories from this invasive species include burrowing and herbivory, resulting in habitat degradation. Nutria have become well-established in metropolitan habitats, and anecdotal information suggests the problem has increased in recent years. However, little regional research on the species has been conducted. The scope of this research, which emphasizes metropolitan habitats, includes three primary foci in relation to nutria populations in the Pacific Northwest: modeling habitat suitability, assessing activity and movement patterns, and identifying and managing …