Index Catalog // ScholarsArchive@OSU

A landscape-scale assessment of plant communities, hydrologic processes, and state-and-transition theory in a Western juniper dominated ecosystem

Creator:: Petersen, Steven Lawrence
Abstract:: Western juniper has rapidly expanded into sagebrush steppe communities in the Intermountain West during the past 120 years. This expansion has occurred across a wide range of soil types and topographic positions. These plant communities, however, are typically treated in current peer-reviewed literature generically. The focus of this research is...
Resource Type:: Dissertation
Full Text:: this dissertation. Dr. Tamzen K. Stringham was involved with experimental design, data collection

The influence of environmental and physical factors on the thermal patterns of headwater streams

Creator:: Carr, Craig A.
Abstract:: A case study was performed in 2000 and 2001 to characterize the thermal pattern of four morphologically similar eastern Oregon streams and to identify the physical and environmental factors that expressed significant and functionally viable relationships with stream temperature (daily maximum, daily minimum and daily rate of heating). Stream and...
Resource Type:: Masters Thesis
Full Text:: Environmental and Physical Factors on the Theiiiial Patterns of Headwater Streams. Abstract approved: Tamzen K

An assessment of plant community structure, herbivory, soils, and state-and-transition theory on a winterfat (Krascheninnikovia lanata [Pursh] A.D.J. Meeuse & Smit) ecological site

Creator:: Matney, Casey A.
Abstract:: State-and-transition models (STMs) have been successfully used to describe ecological dynamics in woodlands, shrublands, grasslands, and several other ecosystems. Changes in vegetation and soil are measured to gauge and predict plant community dynamics within ecological states and transitions between alternative ecological states. Ecological states and their boundaries are defined by...
Resource Type:: Dissertation
Full Text:: : __________________________________________________________________ Tamzen K. Stringham State-and-transition models (STMs) have been successfully used to

Effects of plant community characteristics on insect abundance : implications for sage-grouse brood-rearing habitat

Creator:: Ersch, Erica A.
Abstract:: A causative factor in declining greater sage-grouse (Centrocercus urophasianus) populations is reduced annual recruitment due to poor habitat quality. Sage-grouse population decline is concurrent with a decline in the extent and quality of the sagebrush (Artemisia sp.) biome. However, current research has shown a positive relationship between sage-grouse brood and...
Resource Type:: Masters Thesis
Full Text:: . Abstract approved: _____________________________________________________________________ Tamzen K

Winterfat seed viability and dormant season livestock grazing

Creator:: Leary, Ryan
Abstract:: Krascheninnikovia lanata (winterfat) is a valuable forage species with an average of 10% crude protein during winter when there are few nutritious options for livestock and wildlife. However, excessive grazing throughout the west has negatively impacted survival of winterfat stands. We hypothesized that four years rest from dormant season livestock...
Resource Type:: Masters Thesis
Full Text:: Livestock Grazing Abstract approved: Tamzen K. Stringham Krascheninnikovia lanata

Revegetation with Carex nebrascensis and Carex utriculata following reconstruction in a NE Oregon meadow stream

Creator:: Quistberg, Sarah E.
Abstract:: Riparian vegetation is an essential component for the maintenance and/or repair of channel stability and function. Sedges within low-gradient riparian systems provide the structure necessary for sediment trapping leading to channel narrowing through bank building processes. Planting success in riparian restoration projects has often failed due to inappropriate species selection,...
Resource Type:: Masters Thesis
Full Text:: Oregon Meadow Stream Abstract approved: Tamzen Stringham Riparian vegetation is an

Habitat parameters associated with the distribution of seven willow species on a stream in southeastern Oregon

Creator:: Gilbert, Griffith J.
Abstract:: Thirteen different habitat parameters were measured either quantitatively or qualitatively around seven different Salix (willow) species on a defined reach of stream on the southwestern slope of Steens Mountain in southeastern Oregon in order to both broaden the current information base of riparian ecology and inform future willow plantings aimed...
Resource Type:: Masters Thesis
Full Text:: : ________________________________________________________________________ Tamzen K. Stringham Thirteen different habitat parameters were measured either

Placement of felled western juniper trees over a stream channel : Effects on water temperature, streamside willow shrubs, and redband trout

Creator:: Matney, Casey A.
Abstract:: All streams in Oregon that are inhabited by salmon and trout have a statemandated water temperature standard. However, temperatures of many streams, especially during summer months, exceed the seven-day average maximum temperature parameter (200 C for redband trout inhabited streams) accepted by the Oregon Department of Environmental Quality. To date,...
Resource Type:: Masters Thesis
Full Text:: very much. CONTRIBUTION OF AUTHORS Drs. Chad Boyd, Tamzen Stringham, and Robert Gresswell assisted

Nutritional characteristics of dormant season grazing within a winterfat (Krascheninnikovia lanata (Gueldenstaedt)) dominated plant community, and the effect of seedbed preparation on the emergence and survival of winterfat and squirreltail (Elymus elymoides (Raf.) Swezey) seedlings

Creator:: Estes, Mark G.
Abstract:: The effect of seedbed preparation on the emergence and survival of winterfat (Krascheninnikovia lanata (Gueldenstaedt)) and squirreltail (Elymus elymoides (Raf.) Swezey)) seedlings was determined, while quantifying nutritional changes through the dormant season for four range species. In November of 2004 twenty 9m x 8m plots were randomly prepared with one...
Resource Type:: Masters Thesis
Full Text:: .) Swezey) Seedlings. Abstract approved: Tamzen K. Stringham

Woody riparian species patterns along northeast Oregon mountainous streams and the relationship to riparian capability

Creator:: Yancey, Jennifer M.
Abstract:: Woody riparian vegetation is an essential component of riparian ecosystems, responsible in part for the maintenance of functional ecological processes. The plant community composition and distribution provide an indication of the underlying mosaic of environmental attributes and processes. Restoration and management of riparian communities have been hindered by the lack...
Resource Type:: Masters Thesis
Full Text:: Mountainous Streams and the Relationship to Riparian Capability Abstract approved: Tamzen K

ScholarsArchive@OSU

A landscape-scale assessment of plant communities, hydrologic processes, and state-and-transition theory in a Western juniper dominated ecosystem

The influence of environmental and physical factors on the thermal patterns of headwater streams

An assessment of plant community structure, herbivory, soils, and state-and-transition theory on a winterfat (Krascheninnikovia lanata [Pursh] A.D.J. Meeuse & Smit) ecological site

Effects of plant community characteristics on insect abundance : implications for sage-grouse brood-rearing habitat

Winterfat seed viability and dormant season livestock grazing

Revegetation with Carex nebrascensis and Carex utriculata following reconstruction in a NE Oregon meadow stream

Habitat parameters associated with the distribution of seven willow species on a stream in southeastern Oregon

Placement of felled western juniper trees over a stream channel : Effects on water temperature, streamside willow shrubs, and redband trout

Nutritional characteristics of dormant season grazing within a winterfat (Krascheninnikovia lanata (Gueldenstaedt)) dominated plant community, and the effect of seedbed preparation on the emergence and survival of winterfat and squirreltail (Elymus elymoides (Raf.) Swezey) seedlings

Woody riparian species patterns along northeast Oregon mountainous streams and the relationship to riparian capability

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