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Filtering by: Committee Member Jackson, Philip

Effects of cork oak (Quercus suber L.) canopy cover on seasonal herbage production, foliar cover, and nutritive quality in the Mamora National Forest of Morocco

Creator:

Ibnattya, Abdelhai Andaloussi

Abstract:

This research was conducted in the Mamora National Forest of Morocco to: (1) Evaluate the effect of cork oak (Quercus suber L.) crown cover on seasonal herbage production, nutritive quality, and foliar cover on two distinctive sites in each of two years (1982, 1983) and to (2) assess the effects...

Resource Type:

Dissertation
Assessment of impacts of Canada geese on wheat production

Creator:

Louhaichi, Mounir

Abstract:

Numbers of wild Canada geese (Branta canadensis) have increased dramatically during the past 30 years in the lower Columbia and Willamette Valley systems. The damage they cause by grazing and trampling plants can be substantial. The objectives of this research were to: 1) Develop methods that provide reliable estimates of...

Resource Type:

Masters Thesis
Origins of the old-growth forest conflict (1971-1989) : a new model for resource allocation

Creator:

Wilson, Mark Shelton

Abstract:

The old-growth forest conflict is part of the evolving debate over how to use the federal public lands. This study documents the origins and development of the old-growth issue through 1989. The controversy began in the early 1970s when scientists initiated studies of old-growth forests and northern spotted owls, and...

Resource Type:

Dissertation
Introducing geographic information systems to grass seed growers in the Willamette Valley of Oregon

Creator:

Hedstrom, Keldah E.

Abstract:

Oregon is the number one producer of cool-season grass seed in the United States. The center of the grass seed industry of Oregon is located in the Willamette Valley, where about 470,000 acres of seed are grown. Innovative grass seed growers of the area are beginning to implement precision agriculture...

Resource Type:

Masters Thesis