Index Catalog // ScholarsArchive@OSU

Patterns of soil organic matter and microclimate accompanying the death and regeneration of a mountain hemlock (Tsuga mertensiana ) forest

Creator:: Boone, Richard D.
Abstract:: Soil organic matter levels, soil temperature and moisture, and vegetation properties were measured along a sequence of death and regeneration in a mountain hemlock (Tsuga mertensiana) forest. The sequence is produced by slowly moving waves of the root pathogen Phellinus weirii. While analysis of variance for all sampled soil layers...
Resource Type:: Masters Thesis
Full Text:: Hemlock (Tsuga mertensiana) Forest by Richard D. Boone A THESIS submitted to Oregon State University

The effects of mechanical damage on residual coastal Douglas-fir (Pseudotsuga menziesii [Mirbel] Franco) following commercial thinning

Creator:: Kiser, James D.
Abstract:: Commercial thinning operations can result in damage to residual stems. A literature review revealed that little was known about the effects of residual logging wounds with regard to rotation-age commercial conifers, particularly Douglas-fir. An experiment to examine fungal colonization of Douglas-fir following logging damage showed that while damage was significant...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF James D. Kiser for the degree of Doctor of Philosophy in

Plant and amphibian assemblages in zero-order basins in the Oregon Coast Range

Creator:: Sheridan, Chris D.
Abstract:: We have a poor understanding of the biotic communities in zero-order basins, drainages extending from ridgelines to the initiation of first-order streams. This study describes baseline plant and amphibian composition in unmanaged zero-order basins in the Oregon Coast Range. Specifically, I studied: i) the spatial distribution and diversity of species,...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Chris D. Sheridan for the

Habitat relationships of small terrestrial vertebrates and invertebrates in managed forests in the southern Oregon Cascades

Creator:: McDade, Kirsten Ayn
Abstract:: Silviculture systems that involve commercial thinning may provide higher quality wildlife habitat than traditional clearcut systems, yet such systems have not been vigorously tested. This prospective study examined forest floor animal abundance and habitat relationships under three different silviculture conditions: clearcuts, commercial thins, and uncuts. Eighteen stands, six per treatment,...
Resource Type:: Masters Thesis
Full Text:: from beginning to end. Her continual enthusiasm and optimism were an inspiration. D. Olson, J

Nitrogen and phosphorus dynamics during decomposition of multiple litter types in temperate coniferous forests

Creator:: van Huysen, Tiffany L.
Abstract:: Litter nutrient dynamics contribute significantly to biogeochemical cycling in forest ecosystems. These dynamics may be influenced by site attributes, litter nutrient concentrations, and soil nutrient availability either independently or synergistically. Litter nutrient dynamics were examined in two decomposition studies in temperate coniferous forests of Oregon. I used ¹⁵N-labelled litter of...
Resource Type:: Dissertation
Full Text:: incubations and field studies. Ecosystems 5:680-691. Crews, T. E., K. Kitayama, J. H. Fownes, R. H. Riley, D

Effects of spatial scale and heterogeneity on avian occupancy dynamics and population trends in forested mountain landscapes

Creator:: Frey, Sarah J. K.
Abstract:: Population trends and patterns in species distributions are the major currencies used to examine responses by biodiversity to changing environments. Effective conservation recommendations require that models of both distribution dynamics and population trends accurately reflect reality. However, identification of the appropriate temporal and spatial scales of animal response, and then...
Resource Type:: Dissertation
Full Text:: for 38 species at the Hubbard Brook Experimental Forest (HBEF) in the White Mountains of New

The biology and ecology of Potentilla recta in the Blue Mountains of northeastern Oregon

Creator:: Tuitele-Lewis, Jamison
Abstract:: Two experiments were conducted on the invasive plant species Potentilla recta in northeastern Oregon to investigate both biological and ecological characteristics of the species. Growth analysis was conducted on the plant at three sites over a period of two years (2002 and 2003). Relative growth rate (RGR) was calculated for...
Resource Type:: Masters Thesis
Full Text:: northwest of Troy, Oregon ( 45° 57' N, 117° 27' W). 4 Climate in the Blue Mountains is characterized by

Stem sapwood water transport and storage strategies in three conifers from contrasting climates

Creator:: Barnard, David M.
Abstract:: The state of Oregon has two distinct climate types bisected by the crest of the Cascade Mountain range. The western side of the Cascades experiences high levels of precipitation and mild temperatures due to the maritime influence of the Pacific Ocean, while the eastern side lies in the rain shadow...
Resource Type:: Masters Thesis
Full Text:: the potential to limit biomass production (Hubbard et al 1999, McDowell et al 2008). A potential

Patterns in understory vegetation communities across canopy gaps in young, Douglas-fir forests of western Oregon

Creator:: Fahey, Robert T.
Abstract:: Canopy gap formation is a major factor contributing to maintenance of overstory species diversity and stand structure in forests and may be integral to development of understory shrub and herb layers as well. Acknowledgement of gap formation as a fundamental feature of natural forests has led to consideration of gaps...
Resource Type:: Masters Thesis
Full Text:: . ............................................................................................................. 25 2.4. OM Hubbard site NMS ordination of transect position plots on abundance of species

Context matters : A multi-scale assessment of riparian tree response to upslope density reduction

Creator:: Ruzicka, Kenneth J., 1982-
Abstract:: Forest management is rapidly undergoing a transformation from a discipline based on efficient commodity production to one for multiple uses, especially on federally managed land in the United States. This new management paradigm has challenged silviculturists to develop and adapt forest management techniques that can deal with increased demands. Using...
Resource Type:: Dissertation
Full Text:: . J. Renée Brooks assisted with study design, data analysis and the writing of Chapter 4. Paul D

ScholarsArchive@OSU

Patterns of soil organic matter and microclimate accompanying the death and regeneration of a mountain hemlock (Tsuga mertensiana ) forest

The effects of mechanical damage on residual coastal Douglas-fir (Pseudotsuga menziesii [Mirbel] Franco) following commercial thinning

Plant and amphibian assemblages in zero-order basins in the Oregon Coast Range

Habitat relationships of small terrestrial vertebrates and invertebrates in managed forests in the southern Oregon Cascades

Nitrogen and phosphorus dynamics during decomposition of multiple litter types in temperate coniferous forests

Effects of spatial scale and heterogeneity on avian occupancy dynamics and population trends in forested mountain landscapes

The biology and ecology of Potentilla recta in the Blue Mountains of northeastern Oregon

Stem sapwood water transport and storage strategies in three conifers from contrasting climates

Patterns in understory vegetation communities across canopy gaps in young, Douglas-fir forests of western Oregon

Context matters : A multi-scale assessment of riparian tree response to upslope density reduction

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Language

License

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search