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Ecology and Evolutionary Biology Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
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- Animal Sciences (3)
- Terrestrial and Aquatic Ecology (3)
- Environmental Sciences (2)
- Physical Sciences and Mathematics (2)
- Aquaculture and Fisheries (1)
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- Arts and Humanities (1)
- Biology (1)
- Environmental Monitoring (1)
- Food Science (1)
- Forest Sciences (1)
- History of Art, Architecture, and Archaeology (1)
- Other Animal Sciences (1)
- Other Ecology and Evolutionary Biology (1)
- Other Forestry and Forest Sciences (1)
- Other Plant Sciences (1)
- Plant Sciences (1)
- Weed Science (1)
- Keyword
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- Amphibians -- Effect of habitat modification on -- Oregon -- Wilson River Region (1)
- Atmospheric deposition -- Pacific Northwest (1)
- Behavioral enrichment (1)
- Carcass feeding (1)
- Coastal archaeology -- Washington (State) -- Olympic Peninsula (1)
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- Culverts -- Environmental aspects -- Oregon -- Tillamook State Forest (1)
- Dam retirement -- California -- Lassen Volcanic National Park -- Case studies (1)
- Dam retirement -- Environmental aspects -- California -- Lassen Volcanic National Park -- Case studies (1)
- Earthquakes -- Northwest Coast of North America (1)
- English ivy -- Environmental aspects -- Pacific Northwest (1)
- Fish remains (Archaeology) -- Northwest Coast of North America (1)
- Forest roads -- Environmental aspects -- Oregon -- Tillamook State Forest (1)
- Herpetology -- Research -- Oregon -- Wilson River Region (1)
- Invasive plants -- Pacific Northwest (1)
- Nitrogen compounds -- Environmental aspects -- Pacific Northwest (1)
- Omus -- Oregon -- Portland (1)
- Pacific (1)
- Revegetation -- California -- Lassen Volcanic National Park -- Case studies (1)
- Soil restoration -- California -- Lassen Volcanic National Park -- Case studies (1)
- Tiger beetles -- Morphology (1)
- Tiger beetles -- Sexual behavior (1)
- Tse-whit-zen Village Site (Wash.) (1)
- Vultures (1)
- Watershed ecology -- Oregon -- Wilson River Region (1)
Articles 1 - 6 of 6
Full-Text Articles in Ecology and Evolutionary Biology
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 …
Tracking Fish And Human Response To Abrupt Environmental Change At Tse-Whit-Zen: A Large Native American Village On The Olympic Peninsula, Washington State, Kathryn Anne Mohlenhoff
Tracking Fish And Human Response To Abrupt Environmental Change At Tse-Whit-Zen: A Large Native American Village On The Olympic Peninsula, Washington State, Kathryn Anne Mohlenhoff
Dissertations and Theses
Evidence of large earthquakes occurring along the Pacific Northwest coast is reflected in coastal stratigraphy from Oregon to British Columbia, where there also exists an extensive archaeological record of Native American occupation. Tse-whit-zen, a large Native American village dating between 1824 and 54 cal B.P. located on the Olympic Peninsula of Washington State, was excavated with exceptionally fine stratigraphic control allowing for precise comparison of natural and cultural records. Here I report on the >10,000 fish remains from one 2x2 m excavation block; this assemblage spans one earthquake event, allowing study of changes in relative taxonomic abundance through time that …
Ecomorphology And Mating Behavior Of Two Species Of Night-Stalking Tiger Beetles, Omus Audouini And O. Dejeanii, Robert Kent Richardson
Ecomorphology And Mating Behavior Of Two Species Of Night-Stalking Tiger Beetles, Omus Audouini And O. Dejeanii, Robert Kent Richardson
Dissertations and Theses
Night-stalking tiger beetles (Cicindelinae: Omus) are among the least studied members of the highly diverse Carabid sub-family Cicindelinae, the tiger beetles. Despite populations of Omus being common in the forest floor habitats of the west coast of North America and their conspicuous predatory role within terrestrial arthropod communities, little is known about the biology and ecology of Omus.
Field studies showed that two species of Omus existed in the forested areas of Powell Butte Nature Park, Portland, Oregon, USA: Omus audouiniand O. dejeanii. The co-occurrence of sympatric, and likely syntopic, species allowed for a comparative approach in examining and analyzing …
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. …
Evaluating The Effects Of Road Crossing Structures On Stream-Associated Amphibians In The Wilson River Watershed, Tillamook State Forest, Oregon, Sara Erin Twitchell
Evaluating The Effects Of Road Crossing Structures On Stream-Associated Amphibians In The Wilson River Watershed, Tillamook State Forest, Oregon, Sara Erin Twitchell
Dissertations and Theses
As replacement and removal of undersized culverts gains momentum as an effective technique for restoring natural stream flows and removing fish passage barriers, it is important to evaluate the benefits of these efforts on the in-stream and adjacent riparian habitat for other species of potential concern. This study compares stream-associated amphibian (SAA) occurrence in streams adjacent to different road crossing structures on unpaved forest roads in the Wilson River watershed located within the Tillamook State Forest, Oregon. Surveys were conducted at road crossing structures for three taxa of SAA; Pacific giant salamander (Dicamptodon tenebrosus), coastal tailed frog (Ascaphus truei), and …
Carcass Feeding For Captive Vultures: Testing Assumptions About Zoos And Effects On Birds And Visitors, Hannah Gaengler
Carcass Feeding For Captive Vultures: Testing Assumptions About Zoos And Effects On Birds And Visitors, Hannah Gaengler
Dissertations and Theses
Carcass feeding is a potentially controversial feeding method for zoo animals. The common assumption is that many North American zoos refrain from feeding large carcasses to their carnivorous animals because zoo visitors might not approve of this feeding method. However, since there are several species of carnivores in zoos that feed from large carcasses in nature, this food type also has the potential to be beneficial to their welfare. In intelligent and usually inquisitive scavengers like vultures, a lack of activity and behavioral opportunities could be a welfare problem in captivity; providing them with a more complex food item might …