The northern part of the Southeast Three Sisters quadrangle straddles
the crest of the central High Cascades of Oregon. The area is
covered by Pleistocene and Holocene volcanic and volcaniclastic rocks
that were extruded from a number of composite cones, shield volcanoes,
and cinder cones. The principal eruptive centers include...
During Pliocene time a cluster of basaltic and basaltic andesite shield volcanoes was built in the
Three Sisters region. Included in this cluster are the North Sister, Little Brother, Husband, Wife,
Sphinx and Broken Top, the radial dikes and conduit fillings of which have been laid bare by
glacial erosion....
The Western Lake Survey (WLS) of 1985 documented the status of lake water chemistry across the western US and inferred population representations of various subregions and geomorphic units via statistically analyses. Results from this 1985 study indicated that lakes of the Oregon Cascades had the second most pristine and dilute...
This is a study of the ecology of the timberline and alpine vegetation of the Three Sisters which are located in the
central Oregon Cascades. The Sisters are a close group of three 1O,000-foot volcanic peaks. Volcanic activity within the last few hundred years as well as recent glaciation have...
The purpose of the Greater Sisters Country CWPP is to protect human life and reduce property loss due to catastrophic wildland fire in the communities and surrounding areas of the Sisters/Camp Sherman, Black Butte Ranch, and Cloverdale Rural Fire Protection Districts. Although reducing the threat of wildland fire is the...
Three studies were performed in Oregon wildernesses. The first used wilderness permit and trailhead registration data to evaluate trends in use of Three Sisters, Mt. Jefferson, and Eagle Cap Wildernesses from 1976 to 1994. Recreational visitor days were found to have declined, but the number of visits increased dramatically, because...
Ninety-five oriented samples were obtained from nine Recent
Cascade lava flows in Oregon. Directions and intensities of remanent
magnetization were measured on a spinner magnetometer which measures
directions of magnetization to within 1.2° s.d. Angle measurements
were plotted graphically using an equal area projection. Mean
directions and statistics were calculated...
The purpose of this study was to investigate several hypotheses concerning specific demonstrable attitudes toward education, critical thinking ability, and affective behaviors as these were manifested by students in the BSCS environmental module, Investigating Your Environment (IYE), and in more structure-oriented biology classes. Participants in the study were students in...
Thais emarginata is a gastropod which inhabits the midlittoral
zone of the intertidal region. Oxygen consumption of high-level and
low-level organisms was determined at various seasons of the year
over an experimental temperature range of 5 to 20° C.
No significant difference in respiratory rate between separate
populations of high-level...
Chemical dosimetry developed in response to needs created by
developments in the field of high-energy radiation. Shortly after the
discovery of X-rays in 1895 and of radioactivity in 1896, the deleterious
effects of ionizing radiation were recognized. To guard against the
injurious effects of radiation in medical application, dose-measuring
methods...
Six high-use destination areas were studied in the Alpine Lakes, Mount Jefferson, and Three Sisters Wildernesses in Washington and Oregon. Exit interviews were conducted with visitors, and recreation impacts and visitor encounter rates between groups were quantified. Encounter rates were extremely high and impacts were substantial but localized. Visitors were...
Natural events such as wildfires, floods, and storms can significantly alter the short-term structure and functioning of natural systems. Recreation in wilderness areas is one instance in which individuals are directly exposed to post-disturbance landscapes. Consequently, public land managers may be faced with a different set of challenges stemming from...
A wilderness area, as administered by the U. S. Forest Service, is a tract of undeveloped land over 100,000 acres in size with no roads or provision for motorized transportation. Commercial timber cutting, hotels, stores, and similar developments are prohibited. While there are some exceptions for private holdings and administrative...
Siblings influence each other lifelong and are challenged to
accomplish specific developmental tasks of the sibling relationship
(Goetting, 1986). Rivalry and closeness are the fundamental themes in
this relationship. In adolescence two siblings might give each other
emotional support, be confidants, feel close; they might also
struggle, fight, and feel...
This thesis uses a series of non-fiction vignettes to explore objects, agencies, and networks, applying theories of rhetoric and composition directly to experience and vise versa. Focusing on agency--as understood through sociology's actor-networks, post- humanism’s Object Orientated Ontology, and Ecocriticism's ecological approach--I look at events, landscapes, and partnerships that have...
Increasing wilderness use, and the uneven distribution
of use within wilderness areas, have contributed to management
problems. Problems associated with some heavily visited areas are
in conflict with the intent of the Wilderness Act of 1964. One of
the constraints hindering optimal management has been the decentralized
nature of the...
This report assesses how current management actions are adhering to the original mandate set by the Wilderness Act of 1964 by monitoring the five qualities of Wilderness character (untrammeled, natural, undeveloped, opportunities for solitude/unconfined recreation, and other features of value) as they pertain to this specific Wilderness area.
The current project investigated the influence of three life transitions on the intimacy and contact siblings share in early adulthood. Using a web-based survey, 260 young adults from two large state universities and community members from the Portland, Oregon area were surveyed about their relationships with a single biological sibling....
The purpose of this study is to determine if the
ntoraines damming proglacial Carver Lake are ice-cored.
The methodology to be employed consists of interpretation
of aerial photographs and field observations. The results
of these studies will be compared. to past research of
known ice-cored moraines in other regions of...
In 1986, researchers from Oregon State University, led by Dr. David Brauner, came to the small Catholic community of St. Paul, Oregon as part of ongoing research on the French-Canadian inhabitants of the Willamette Valley between 1829 and the mid-1860s. They were searching for the remains of the first Catholic...
The Central Oregon High Cascade Range is an anomalously mafic segment of the Cascade Arc due to ongoing intra-arc extension, which allows most magmas to traverse the crust without stalling and evolving to more evolved compositions. North Sister, a composite volcano in this arc segment, has produced a seemingly monotonous...
While many small towns today find themselves struggling in
the face of economic stagnation or decline, others must deal with
rapid growth and the threat it poses to their valued quality of life.
The small central Oregon town of Sisters offers an example of a town
whose previously declining economy...
The Central Oregon High Cascade Range is an anomalously mafic segment of the
Cascade Arc due to ongoing intra-arc extension, which allows most magmas to traverse
the crust without stalling and evolving to more evolved compositions. North Sister, a
composite volcano in this arc segment, has produced a seemingly monotonous...
Sororities play an important role in the process by which sorority women become gendered by influencing members' ideas about what it means to be a woman. Women and men become gendered through regular social interaction with other women and men, and sororities have a particularly strong impact on their members...
Gathering and burning firewood in heavily used subalpine areas contributes to campsite deterioration. Forest Service policy directs wilderness managers to implement the principle of nondegradation. As a result, campfires may be prohibited in areas where fire-related impacts
are significant.
The Lakes Basin and Ice Lake Travel Zones in the Eagle...
This pilot study of South Sister Creek (8 km length) examined stream-scale (i.e., longitudinal trends) and sub-reach scale (less than 100 m) water temperature. Hourly summer temperature time-series data were gathered at four to seven locations along South Sister Creek in 2006, 2012, and 2013 and were used to explore...
Children in middle childhood were surveyed in elementary schools
to explore possible associations between their perceptions about certain
characteristics of their sibling relationships and the ways in which
their parents responded to sibling quarrels.
An instrument was developed to measure perceptions of types of parental responses and the
Sibling Relationship...
Previous research had indicated that siblings of deceased children
developed a variety of behavioral problems as a result of the
death (Binger et al., 1969; Cain et al., 1964; Martinson et al., 1980;
Stehbens, & Lascari, 1974). The purpose of this study was to determine
the relationship of selected factors...
This study examined the perceptions of team members of a sister library initiative between Nimbe Adedipe Library, Federal University of Agriculture, Abeokuta, Nigeria and the Valley Library, Oregon State University, Corvallis, USA. An online survey and focus group discussion were used as data collecting instruments. All of the 26 members...
The Mount Jefferson Primitive Area is one of three High Cascade wilderness areas in Oregon. It is second in size among these, covers approximately 136 square miles, and with the addition of a large roadless area in Warm Springs Indian Reservation represents the only one of these areas in Oregon...
Wilderness character monitoring (WCM) is an interagency strategy created in 2008 in collaboration between the four federal land management agencies that manage designated wilderness (Forest Service, National Park Service, Fish and Wildlife Service and Bureau of Land Management) and other contributors (Landres et al. 2008a). The reports created from this...
Compromises required for the passage of the Wilderness
Act (1964) created inherent conflicts in the designation and administration
of wilderness areas. Subsequent legislation helped to more
firmly interpret and define the Act. Attendant policy changes suggest
a trend to increase the recreational and economic utility of wilderness.
Policy changes also...
Individuals in and around a small college town were asked to take part in an interview to study their perception of wilderness activities depicted on television and other forms of media and the potential impact of these depictions on an individual's willingness to participate in wilderness activities. This study linked...
Increasingly popular methods for managing impacts of tourism in nature-based settings include collaborative and voluntary codes of conduct. In southeast Alaska, for example, the Tourism Best Management Practices (TBMP) in Juneau and Wilderness Best Management Practices (WBMP) in Tracy Arm-Fords Terror Wilderness have been created to address shore and marine...
Oblique subduction of the Juan de Fuca plate beneath the North American plate characterizes the tectonic setting of the Pacific Northwest. North American plate deformation at the latitude of central Oregon consists of the clockwise-rotation of the Siletzia block in the forearc and the extensional Basin and Range province in...
The purpose of this thesis was to create a sustained piece of fiction that both represented my growth as a writer throughout my time at Oregon State University, and wove together a mixture of imagination, language, and creativity. My hope was to write a novella that incorporated and drew from...
The present study examined if having an older sibling was significantly related to stronger selfregulation and achievement, in a sample of 74 preschool children participating in a selfregulation intervention. It was hypothesized that children with an older sibling in the fall would have higher self-regulation and achievement scores than children...
Vegetation change is an important factor affecting the global carbon cycle, land-atmosphere interaction, and terrestrial ecology. The study of vegetation change on a global scale can be used to evaluate the impact of global climate change on terrestrial ecosystems. Satellite remote sensing can monitor vegetation change at the global scale,...
The National Natural Landmarks (NNL) Program encourages the preservation of exceptional examples of the nation’s biological and geological features. To qualify for NNL designation, a site must be one of the best examples of a geological or biological feature within a biophysiographic province. Mount Howard - East Peak represents a...
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of the Eagle Cap Wilderness Area, a major recreational focal point. The north
part of the landmark
The widespread introduction of trout to naturally fishless mountain lakes in the western United States has been accompanied by little research. The ecological role of trout populations occurring in 91 lakes of the central Selway Bitterroot Wilderness, Idaho, was examined with respect to 1) the sampling variability of biological and...
The Three Sisters region of the Oregon High Cascades has developed three compositionally
and petrogenetically distinct silicic (i.e., SiO₂ ≥ 58%) magma systems within the last 600 k.y. These
silicic systems evolved from the same High Cascade mafic magma system and developed in the same
20x30 km area of the...
Federally designated wilderness areas in the United States are uniquely required to provide opportunities for particular types of recreational experiences. According to the Wilderness Act of 1964, the law that governs the management of designated wilderness in the U.S., wilderness areas are to provide “outstanding opportunities for solitude or a...
Designation of areas as marine wilderness has been proposed as a strategy for managing the increasing threats facing the world’s oceans. Although social factors influence marine protected area success, the human dimensions of marine wilderness remain minimally explored. This thesis examines views of marine wilderness expressed by a representative sample...
America for the past few decades, yet participation has continued to be dominated by White, upper-class individuals. These similar disparities exist in general outdoor recreation participation, with individuals from race and/or ethnic minority groups participating in outdoor recreation activities less than Whites. Research in the leisure field has revealed that...
Legislated wilderness, first created in the United States with the Wilderness
Act of 1964, is being more widely established internationally. The Mavuradonha Wilderness
Area in Zimbabwe is the first wilderness set up to be managed by the local community.
Because of the importance of both conservation and rural development goals...
The objective of this study was to determine whether visitor
perceptions of ecological impacts at wilderness campsites could be
accurately measured using photographs or written descriptions rather
than actual site evaluations. Photographs and written site descriptions
of 20 campsites were used to measure perceptions of two forms
of campsite impacts...
The purpose of this paper is to provide resource managers with a compilation of background information useful in the development of guidelines and/or management strategies designed to minimize the disruptive impacts of petroleum exploration and development on wildlife in wilderness environments. The paper is a review of literature, and describes:...
Guided by the emerging interest in gender of siblings as one important
sociological component in American family studies, the major objective of this study
was to examine the effect of sex composition of siblings on women's levels of
educational attainment in the Japanese setting. The present study hypothesized
that the...
Truffles have evolved from epigeous (aboveground) ancestors in nearly every major lineage of fleshy fungi. Because accelerated rates of morphological evolution accompany the transition to the truffle form, closely related epigeous ancestors remain unknown for most truffle lineages. This is the case for the quintessential truffle genus Tuber, which includes...
Using spatial autocorrelation analysis, we
examined the within-population genetic structure of
Rhizopogon vinicolor and R. vesiculosus, two hypogeous
ectomycorrhizal (EM) species that are sympatric
sister taxa known to differ in their clonal structure.
We collected 121 sporocarps and 482 tuberculate EM
of both species from a 20 ha forest stand...
It has long been acknowledged that recreation activities can cause conflict
among stakeholders with different perspectives. In 1949, Aldo Leopold, one of the
earliest proponents of wilderness preservation, noted "Public policies for outdoor
recreation are controversial. Equally conscientious citizens hold opposite views on what
is and what should be done...
The hermit thrush (Catharus guttatus) and the varied thrush (Ixoreus naevius) are focal species for conservation of forested habitats in Oregon. Although habitat associations have been defined for both species, their response to changes in vegetation following wildfire has not been well studied. To help fill this information gap, I...
The early life history stages and metamorphosis in Dover
sole (Microstomus pacificus) are described from 201 larvae and
juveniles. Unlike other pleuronectids, with the possible exception
of the deep-sea sole (Embassichthvs bathvbius), initial migration of
the left eye is not associated with metamorphosis or transition from
plankton to benthos. The...
Quaking aspen (Populus tremuloides) is an important tree species in the western United States and there has been much concern about its persistence. In this thesis, I report on aspen in a portion of its range that has not been previously evaluated: the eastern and western slopes of the Central...
Much of the research on social carrying capacity in
recreation settings has focused on backcountry or
primitive areas where recreationists' perceptions of
social contact are a critical element of a quality
experience. A challenge now facing resource managers and
planners is to apply what has been learned about social
carrying...
From May 1999 through April 2000, I interned with the Alaska Wilderness Recreation and Tourism Association (AWRTA), a non-profit organization that balances responsible tourism development with resource protection and community enhancement. I was assigned to a seven-member task force charged with evaluating the success of AWRTA's "Ecotourism Guidelines2" and was...
The recognition that women are not in a fixed position but are dynamic and active in any of the processes of migration and post-migration adjustment helps us to see the complexity of women's participation in migration. Using life history interviews, three Sri-Lankan womens' migration experiences are examined for the ways...
Redband trout (Oncorhynchus mykiss gairdneri) are found over a wide range of environmental conditions and are known for their variability in life history traits among watersheds or even within streams. Life history traits and population structure of these trout can be influenced by a variety of anthropogenic changes including habitat...
The northern part of the Southeast Three Sisters quadrangle straddles
the crest of the central High Cascades of Oregon. The area is
covered by Pleistocene and Holocene volcanic and volcaniclastic rocks
that were extruded from a number of composite cones, shield volcanoes,
and cinder cones. The principal eruptive centers include...
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121°52'30" west longitude.
The entire field area lies within the ThreeSistersWilderness
area
Research on campsite selection behavior has given managers of outdoor recreation resources a better understanding of users' needs and preferences. However, researchers have found nagging inconsistencies, not only across settings but also between campers' stated preferences and their actual behavior. This thesis re-examines the campsite selection research in light of...
This dissertation integrates a process-based hydrological investigation with an
ongoing paired-catchment study to better understand how forest harvest impacts
catchment function at multiple scales. We do this by addressing fundamental questions
related to the stocks, flows and transit times of water. Isotope tracers are used within a
top-down catchment intercomparison...
This thesis explores the electrified female subject in two novels, Theodore Dreiser's Sister Carrie (1900) and Edith Wharton's The House of Mirth (1905). As cultural touchstones, two literary works that prominently feature electricity -- Henry James' story "In the Cage" and Henry Adams' biography The Education of Henry Adams --...
Use of backcountry areas in winter by crosscountry skiers, snowshoers, climbers, snowmobilers and others has increased rapidly in the Mt. Hood area of Oregon in recent years. With this increase in use a larger segment of the user population is being exposed to potential a.,pl.H11 Winger. purpose of this study...
The Normalized Burn Ratio and Composite Burn Index were used to classify burn severity in three sites that experienced lightning-ignited wildfire in the year 2000. The effect of burn severity (unburned, low, moderate, and high severity classes) was investigated on vegetation and soil microbial community composition. Vegetation communities showed a...
Published December 1979. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Redband trout density was examined in three forested streams in central
Oregon at two scales, pool channel unit and microhabitat. Two streams were in
roadless areas and one was in a "highly managed" watershed. At the larger
spatial scale, trout displayed a seasonal shift in habitat use from early to...
The current thesis presents contingent valuation research incorporating social psychological measures that investigates recreationists' willingness to pay recreation access fees at McDonald-Dunn Forest, Oregon. Context is provided through an extensive literature review of recreation fee management, issues and concerns related to recreation fees, recreationists' attitudes toward fees, relevant social psychological...