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Terrestrial and Aquatic Ecology Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Keyword
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- Amphibians -- Effect of habitat modification on -- Oregon -- Wilson River Region (1)
- Aquariums (1)
- Aquatic ecology -- Columbia River Watershed (1)
- Aquatic habitats (1)
- Biological invasions - Pacific Northwest (1)
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- Boats and boating -- Environmental aspects -- Washington (State) -- Puget Sound (1)
- Chinook salmon -- Columbia River Watershed (1)
- Conservation of natural resources (1)
- Culverts -- Environmental aspects -- Oregon -- Tillamook State Forest (1)
- Fisheries (1)
- Forage fish fisheries (1)
- Forage fishes (1)
- Forest roads -- Environmental aspects -- Oregon -- Tillamook State Forest (1)
- Harbor porpoise -- Mortality (1)
- Harbor porpoise -- Stranding -- Pacific Northwest (1)
- Harbor seal -- Effect of human beings on -- Washington (State) -- Puget Sound (1)
- Herpetology -- Research -- Oregon -- Wilson River Region (1)
- Omus -- Oregon -- Portland (1)
- Ornamental fish trade (1)
- Pacific herring (1)
- Phocoena -- Behavior (1)
- Tiger beetles -- Morphology (1)
- Tiger beetles -- Sexual behavior (1)
- Watershed ecology -- Oregon -- Wilson River Region (1)
- Publication
- Publication Type
Articles 1 - 7 of 7
Full-Text Articles in Terrestrial and Aquatic Ecology
Human Impact On Pacific Harbor Seals In Urban Southern Puget Sound, Washington, Vicky Gomez
Human Impact On Pacific Harbor Seals In Urban Southern Puget Sound, Washington, Vicky Gomez
University Honors Theses
This research proposal aims to highlight the quantitative and qualitative impact of human disturbances Pacific Harbor Seals (Phocca vitulina) are experiencing in urban southern Puget Sound, Washington and how the data collected can educate the community to protect and conserve a healthy population of Harbor Seals. Urbanization and areas utilized by harbor seals within urban settings prompted data collection from four nearby sites: site A, Carylon Beach, includes pedestrian and boat disturbances, site B, Tacoma Tidal Flats, only experience boat disturbances, site C, West Bay Marina, experiences motorized and non-motorized boat disturbances and site D, Gertrude Island, is …
Increased Harbor Porpoise Mortality In The Pacific Northwest, Usa: Understanding When Higher Levels May Be Normal, Jessica L. Higgins, Stephen A. Raverty, Stephanie A. Norman, John Calambokidis, Joseph K. Gaydos, Deborah A. Duffield, Dyanna M. Lambourn, James M. Rice, Brad Hanson, Kristin Wilkinson, Steven J. Jeffries, Brent Norberg, Lynne Barre
Increased Harbor Porpoise Mortality In The Pacific Northwest, Usa: Understanding When Higher Levels May Be Normal, Jessica L. Higgins, Stephen A. Raverty, Stephanie A. Norman, John Calambokidis, Joseph K. Gaydos, Deborah A. Duffield, Dyanna M. Lambourn, James M. Rice, Brad Hanson, Kristin Wilkinson, Steven J. Jeffries, Brent Norberg, Lynne Barre
Biology Faculty Publications and Presentations
In 2006, a marked increase in harbor porpoise Phocoena phocoena strandings were reported in the Pacific Northwest of the USA, resulting in the declaration of an unusual mortality event (UME) for Washington and Oregon to facilitate investigation into potential causes. The UME was in place during all of 2006 and 2007, and a total of 114 porpoises stranded during this period. Responders examined 95 porpoises; of these, detailed necropsies were conducted on 75 animals. Here we review the findings related to this event and how these compared to the years immediately before and after the UME. Relatively equal numbers among …
Historical Vegetation Of Three Salmon-Bearing Watersheds In The Interior Columbia River Basin, Tyanna Smith
Historical Vegetation Of Three Salmon-Bearing Watersheds In The Interior Columbia River Basin, Tyanna Smith
PSU McNair Scholars Online Journal
Land use practices can be a contributing factor to environmental degradation and have been the focus of many ecological studies. One aspect that is less addressed is land use history and the effects that past practices, such as logging and grazing, can have on the current landscape. This paper describes research and the synthesis of material on the environmental history and watershed characteristics for three watersheds located within spawning and rearing areas for Chinook salmon in the Grande Ronde River Basin in Northeast Oregon: upper Grande Ronde River, Catherine Creek, and Minam River. The Grande Ronde Basin is critical spawning …
Archaeological Data Provide Alternative Hypotheses On Pacific Herring (Clupea Pallasii) Distribution, Abundance, And Variability, Iain Mckechnie, Dana Lepofsky, Madonna L. Moss, Virginia L. Butler, Trevor J. Orchard, Gary Coupland, Frederick Foster, Megan Caldwell, Ken Lertzman
Archaeological Data Provide Alternative Hypotheses On Pacific Herring (Clupea Pallasii) Distribution, Abundance, And Variability, Iain Mckechnie, Dana Lepofsky, Madonna L. Moss, Virginia L. Butler, Trevor J. Orchard, Gary Coupland, Frederick Foster, Megan Caldwell, Ken Lertzman
Anthropology Faculty Publications and Presentations
Over the last century, Pacific herring, a forage fish of tremendous cultural, economic, and ecological importance, has declined in abundance over much of its range. We synthesize archaeological fisheries data spanning the past 10,000 y from Puget Sound in Washington to southeast Alaska to extend the ecological baseline for herring and contextualize the dynamics of modern industrial fisheries. While modern herring populations can be erratic and exhibit catastrophic declines, the archaeological record indicates a pattern of consistent abundance, providing an example of long-term sustainability and resilience in a fishery known for its modern variability. The most parsimonious explanation for the …
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 …
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 …
The Aquarium Trade As An Invasion Pathway In The Pacific Northwest, Angela L. Strecker, Philip M. Campbell, Julian D. Olden
The Aquarium Trade As An Invasion Pathway In The Pacific Northwest, Angela L. Strecker, Philip M. Campbell, Julian D. Olden
Environmental Science and Management Faculty Publications and Presentations
The aquarium trade moves thousands of species around the globe, and unwanted organisms may be released into freshwaters, with adverse ecological and economic effects. We report on the first investigation of the ornamental pet trade as an invasion pathway in the Pacific Northwest region of the United States, where a moderate climate and a large human population present ample opportunities for the introduction and establishment of aquarium trade species. Results from a regional survey of pet stores found that the number of fish (n=400) and plant (n=124) species currently in the aquarium trade is vast. Pet stores import thousands of …