The experiment described in this paper was designed and carried out to study the ability of five provenances of white spruce of acid soil origin and five provenances of basic soil origin grown on an did and a basic soil to utilize and respond to the five macro-nutrient elements N,...
Many diverse applications have begun to study processes and patterns at a global
scale. To aid in this research, discrete global grid systems (DGGSs) are data models
which enable environmental modeling, monitoring and sampling across the earth at a
variety of spatial scales. A DGGS can be evaluated on a...
Ecoregions are regions of relative homogeneity with respect to specific
ecosystem variables (Bailey 1976; Omernik 1995). There has been an increasing
awareness that effective management of environmental resources must be undertaken
with an ecosystem perspective (Omernik, 1995). Ecoregions serve as a spatial
framework for assessing, managing, and monitoring ecosystems that...
Energy use and greenhouse gas emissions are on the forefront of planning policy in the world today. In the U.S., the transportation sector accounts for 50 percent of greenhouse gas (GHG) emissions, the most of any single sector. State and local levels of government have been very proactive in the...
Protected natural areas are important reserves for biodiversity, and in the tropics, often play a role in deterring deforestation. This paper evaluates the effectiveness of a protected-area with a
two-tiered management regime in Bolivia, Amboró National Park and Integrated Management Natural Area (IMNA), in deterring clearance of forest. Four satellite...
Since the early 1980s, satellite imagery has been commonly used to detect change
in wetlands. The overall objective of this study is to utilize remote sensing and
Geographic Information Systems (GIS) technology to determine the extent of change of
the wetland area and of other land use and land cover...
While neutral theory and models have stimulated considerable literature, less well investigated is the effect of topology on neutral metacommunity model simulations. We implemented a neutral metacommunity model using two different stream network topologies, a widely branched network (wide tree) and a narrowly branched network (high tree), both represented as...
Reforestation of certain areas of southwestern Oregon has become a serious problem. Reforestation failures are evident in numerous clear-cut stands, but failures are also noted in various partially-cut stands. The Dead Indian Plateau, approximately twenty miles east of Ashland, Oregon, has many areas where this is evident. This study investigated...
Indigenous languages worldwide are rapidly disappearing, forced out of use by the spread of dominant Western culture and its languages. On the Warm Springs reservation of Oregon, the Culture and Heritage department, the tribal agency in charge of language preservation, is offering instruction in all three languages of the reservation:...
This thesis is divided into three chapters. For all chapters, the experiments described deal with the responses of all or a subset
of 72 wind-pollinated Douglas-fir families from 36 different locations in southwestern Oregon. Wind-pollinated seed was collected from each of two trees at each of the 36 locations. The...