Index Catalog // ScholarsArchive@OSU

Terrestrial lichen and bryophyte communities of the Blue Mountains in Northeast Oregon

Creator:: Hardman, Amanda
Abstract:: Although terrestrial lichens and bryophytes are common in upland plant communities of the Blue Mountains in northeast Oregon, research on cryptogam communities in this region is wanting. Studies have shown that lichens and bryophytes can reduce soil erosion and increase soil fertility in other semiarid habitats of North America. Understanding...
Resource Type:: Masters Thesis

Growth and nutrient content of Chamaecyparis lawsoniana seedlings from contrasting soils in Coos County, Oregon

Creator:: Plocher, Milton David
Resource Type:: Masters Thesis
Full Text:: seedlings from contrasting soils in Coos County, Oregon AN ABSTRACT OF THE THESIS OF MILTON DAVID PLOCHER

Successional changes associated with benthic assemblages in experimental streams

Creator:: Busch, David E.
Abstract:: Experimental streams constructed by the Weyerhaeuser Company, Tacoma, Washington, at Kalama Springs, Washington, were used to observe successional changes in the benthos. Community changes were observed relative to experimental manipulations of light intensity and nitrate concentration in two experiments. The development of benthic assemblages was followed for 150 days after...
Resource Type:: Masters Thesis
Full Text:: in experimental streams AN ABSTRACT OF THE THESIS OF David Edward Busch for the degree of Doctor

Seed and seedling ecology of Artemisia tridentata in a restoration context

Creator:: Wijayratne, Upekala C.
Abstract:: The semi-arid sagebrush steppe ecosystem is one of the largest biomes in North America. The steppe provides critical habitat and forage for wildlife and is economically important to recreation and livestock industries. However, the ecosystem is threatened primarily due to several negative effects associated with expansion of the exotic annual...
Resource Type:: Dissertation
Full Text:: : _____________________________________________________________________ David A. Pyke Patricia S. Muir The semi-arid sagebrush steppe ecosystem is one of

Biological Soil Crusts of the Great Basin : An Examination of their Distribution, Recovery from Disturbance and Restoration

Creator:: Condon, Lea A.
Abstract:: We are at risk of losing the sagebrush steppe in the floristic Great Basin to the invasion of Bromus tectorum L., cheatgrass. The floristic Great Basin includes the Central Basin and Range, the Northern Basin and Range, and the Snake River Plain. The Great Basin receives most of its precipitation...
Resource Type:: Dissertation
Full Text:: : ______________________________________________________ David A. Pyke Bruce McCune We are at risk of losing the sagebrush steppe in the

Effects of grazing and nitrogen enrichment on the taxonomic structure of periphyton assemblages in lotic ecosystems

Creator:: Lundberg, Chris H.
Resource Type:: Masters Thesis
Full Text:: in Lotic Ecosystems. Abstract approved: C. David McIntire The taxonomic composition of benthic

Grazer-periphyton interactions in laboratory streams

Creator:: Sumner, William T.
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Redacted for Privacy C. David McIntire The effects of grazing, light intensity, and

Effects of current velocity, irradiance, and herbivory on algal assemblages in laboratory streams

Creator:: Steinman, Alan D.
Abstract:: Effects of current velocity, irradiance, and grazing on the biomass, taxonomic structure, physiognomy, and chemical composition of lotic algal assemblages were investigated. Four experiments, lasting 32 to 75 days, were conducted in laboratory streams to determine how these factors affect algal assemblages singly, and in concert with each other. Regardless...
Resource Type:: Dissertation
Full Text:: consciousness. CONTRIBUTION OF AUTHORS C. David McIntire, R. R. Lowry, Stan Gregory, Gary Lamberti, and

Effects of substrate relief, light intensity and herbivory on the distribution and abundance of periphyton in laboratory streams

Creator:: DeNicola, Dean M.
Resource Type:: Dissertation
Full Text:: . David McIntire Effects of substrate relief, irradiance and herbivory on the temporal and spatial

Effects of the insecticide dieldrin on benthic algae in laboratory streams

Creator:: Rose, Frederick Louis
Abstract:: The accumulation of dieldrin and its effects on species composition of benthic algal communities were studied in laboratory streams. Effects of dieldrin on photosynthetic and respiratory rates of the blue-green alga Phormidium retzii were determined using a Gilson Differential Respirometer. Dieldrin concentrations ranging from 0.05 to 7.0 ppb were maintained...
Resource Type:: Dissertation
Full Text:: ON BENTHIC ALGAE IN LABORATORY STREAMS Abstract approved: C. David McIntire The accumulation

ScholarsArchive@OSU

Terrestrial lichen and bryophyte communities of the Blue Mountains in Northeast Oregon

Growth and nutrient content of Chamaecyparis lawsoniana seedlings from contrasting soils in Coos County, Oregon

Successional changes associated with benthic assemblages in experimental streams

Seed and seedling ecology of Artemisia tridentata in a restoration context

Biological Soil Crusts of the Great Basin : An Examination of their Distribution, Recovery from Disturbance and Restoration

Effects of grazing and nitrogen enrichment on the taxonomic structure of periphyton assemblages in lotic ecosystems

Grazer-periphyton interactions in laboratory streams

Effects of current velocity, irradiance, and herbivory on algal assemblages in laboratory streams

Effects of substrate relief, light intensity and herbivory on the distribution and abundance of periphyton in laboratory streams

Effects of the insecticide dieldrin on benthic algae in laboratory streams

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