Index Catalog // ScholarsArchive@OSU

Plant biomass and nutrient distribution in a young Pseudotsuga menziesii forest ecosystem

Creator:: Webber, Bruce Douglas
Resource Type:: Dissertation
Full Text:: indebted to his major professor, Dr. C.T. Youngberg, for review of the manuscript and assistance given

Some soil factors affecting snowbrush nodulation

Creator:: Scott, William
Resource Type:: Dissertation
Full Text:: Stratton for William Scott ACKNOWLEDGEMENT The author wishes to express his sincere thanks to Dr. C. T

Relationships of clay mineralogy to landscape stability in Western Oregon

Creator:: Taskey, Ronald D. (Ronald David), 1944-
Abstract:: Soil erosion by mass wasting is the major problem on forest lands of the Pacific Northwest, The clay fractions of soils from a large number of sites in Oregon's Western Cascades were characterized in order to determine the relationships of various clay materials to mass movements. Each site was either...
Resource Type:: Dissertation
Full Text:: encouragement which he provided during the course of the study. Thanks go to Dr. C. T. Youngberg for serving

Effect of phosphorus forms and fertilizer rates on mycorrhizal development on containerized seedlings

Creator:: Munson, Kenneth Richard
Resource Type:: Masters Thesis
Full Text:: L. laccata produced greater infection rates on both tree species than did C. graniforme. For

Morphology, genesis, and classification of soils forming in recent age tephra deposits from Mt. St. Helens volcano

Creator:: Johnson, Mark E.
Abstract:: The morphology, genesis, and classification of soils forming in multiple tephra deposits of recent age from Mt. St. Helens volcano in southwestern Washington Cascade Mountains was studied. Soils which occupied well drained and poorly drained positions on the landscape were characterized according to their morphology and the results of analyses...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Redacted for privacy C./ T. YoAgberg The morphology, genesis, and classification of

Root symbionts and soil microorganisms associated with actinorrhizal plants

Creator:: Rose, Sharon Lee
Abstract:: Symbiotic associations are established between non-leguminous (actinorrhizal) nitrogen-fixing flowering plants and two categories of microorganisms: mycorrhizal fungi and a filamentous actinomycete. The actinomydete induces nodule formation and produces nitrogenase, the enzyme responsible for the reduction of atmospheric nitrogen to a form available to higher plants. The mycorrhizal fungus is found...
Resource Type:: Dissertation
Full Text:: MYCORRHIZAE AND ACTINOMYCES S. L. Rose and C. T. Youngberg 21 ABSTRACT Mountain mahogany (Cercocarpus

Effects of slash burning on surface soil erosion rates in the Oregon Coast Range

Creator:: Bennett, Karen Ann
Resource Type:: Masters Thesis
Full Text:: ACKNOWLEDGEMENTS The author wishes to thank Drs. C. T. Youngberg, J. H. Huddleston, R. Beschta, F. Swanson, P

The effects of mycorrhizal colonization and phosphorus fertilization on Douglas-fir seedling growth, morphology, and photosynthesis

Creator:: Black, C. H. (Charles H.)
Resource Type:: Dissertation
Full Text:: ACKNOWLEDGEMENTS I would like to thank Dr. C. T. Youngberg for giving me the opportunity to work on this project

Genesis of some soils in the central western Cascades of Oregon

Creator:: Brown, R. B.
Abstract:: Soils representative of several landscape units in the H. J. Andrews Experimental Forest, Western Cascade Range, were sampled, analyzed, and tentatively classified. Genetic inferences were drawn relating soils to landscape position and other factors of soil formation. Descriptive information and nutrient capital data were provided to support ecosystem modelling efforts...
Resource Type:: Masters Thesis
Full Text:: Grossnicklaus for Randall Barber Brown ACKNOWLEDGEMENT I thank Dr. Chester T. Youngberg for taking up my

Comparative rates of CO₂ production from the forest floor in the Douglas-fir ecosystem

Creator:: Phillips, Michael John
Abstract:: To obtain data on the decomposition of the forest floor, a battery operated electrolytic respirometer was developed making it possible to measure CO₂ evolution from field moist forest floor samples in situ independent of root respiration. Banks of four respirometers powered by two 12-volt batteries were installed in three old...
Resource Type:: Masters Thesis
Full Text:: Phillips ACKNOWLEDGEMENT I thank my major advisor, Dr. Chester T. Youngberg, for his guidance and

ScholarsArchive@OSU

Plant biomass and nutrient distribution in a young Pseudotsuga menziesii forest ecosystem

Some soil factors affecting snowbrush nodulation

Relationships of clay mineralogy to landscape stability in Western Oregon

Effect of phosphorus forms and fertilizer rates on mycorrhizal development on containerized seedlings

Morphology, genesis, and classification of soils forming in recent age tephra deposits from Mt. St. Helens volcano

Root symbionts and soil microorganisms associated with actinorrhizal plants

Effects of slash burning on surface soil erosion rates in the Oregon Coast Range

The effects of mycorrhizal colonization and phosphorus fertilization on Douglas-fir seedling growth, morphology, and photosynthesis

Genesis of some soils in the central western Cascades of Oregon

Comparative rates of CO₂ production from the forest floor in the Douglas-fir ecosystem

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