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Filtering by: Subject Plants, Effect of ozone on Decade 1990-1999 License All rights reserved

Mount Mazama and Crater Lake : A Study of the Botanical and Human Responses to a Geologic Event

Creator:

Green, Robyn A.

Abstract:

Crater Lake, located in the southern Cascade mountains of Oregon, is the seventh deepest lake in the world. Unlike a majority of the deepest lakes in the world, found in continental rift valleys, Crater Lake is in the caldera of a volcano. For the young at heart and mind, those...

Resource Type:

Masters Thesis
Competitive relations for soil water in an experiment of soil compaction and organic residues in a young ponderosa pine-mixed shrub community

Creator:

Swearingen, Kurt A.

Abstract:

An experiment was established in 1992 in the central Sierra Nevada Mountains of California to assess the effects of high levels of surface organic residues, severely compacted soil, and shrub competition on the development of mixed conifer plantations. This study was conducted in 1997 to determine if selected combinations of...

Resource Type:

Masters Thesis
Understory vegetation response and nitrogen cycling following cutting of western juniper

Creator:

Bates, Jonathan D.

Abstract:

Since the late 1880's western juniper has expanded in range and increased in density in sagebrush-bunchgrass, riparian, and forested plant communities of the Pacific Northwest. Succession to western juniper woodland has been shown to reduce the productivity and diversity of the understory component, result in concentration of soil nutrients beneath...

Resource Type:

Dissertation

Full Text:

of juniper removal on soil moisture content and plant water potentials during the growing season