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Filtering by: Subject Tree farms -- Tanzania Degree Field Forest Science

Measuring and modeling gene flow from hybrid poplar plantations : implications for transgenic risk assessment

Creator:

DiFazio, Stephen P.

Abstract:

Hybrid poplar plantations (Populus trichocarpa x Populus deltoides) are a relatively new feature on the landscape in the Pacific Northwest of the United States, and these plantations may soon include genetically engineered trees. Meanwhile, many wild poplar populations (Populus spp.) are highly degraded due in part to logging, dams, grazing,...

Resource Type:

Dissertation
Growth of plantation conifers and whiteleaf manzanita in southwest Oregon

Creator:

Hanson, Thomas J. (Thomas Jeffrey)

Abstract:

Southwest Oregon presents an environment of hot dry summers, cool moist winters, and rocky, shallow soils. The establishment of conifer plantations in this region presents challenging problems for initial seedling survival and subsequent growth. Three areas of concern include early conifer growth after seedling establishment, growth of competing hardwoods within...

Resource Type:

Dissertation