Index Catalog // ScholarsArchive@OSU

Landscape level patterns in biodiversity : plant species and biomass structure

Creator:: Heider, Christopher
Abstract:: In the tropics, widespread deforestation and conversion of primary forests to agricultural and pasture lands has resulted in losses of composition, structure, and functions of forest landscapes. Deforestation in the tropics is typically preformed via slash-and-burn practices; the byproducts from combustion have been identified as the second-highest form of anthropogenically...
Resource Type:: Masters Thesis
Full Text:: I realized I needed it. To my committee members, I thank Dr. Mark Harmon for his advice and insight

Influence of a Sedimentary Source of Nd on Deep Ocean εNd Distributions

Creator:: Abbott, April N.
Abstract:: Ocean circulation is an important component in Earth's climate system. Predicting future climate and circulation changes requires an improved understanding of the past relationship between climate and ocean currents. The neodymium isotope composition (εNd) of water masses is frequently used as a quasi-conservative tracer to reconstruct ocean circulation. The current...
Resource Type:: Dissertation

Created Snag Dynamics and Influence on Cavity-nesting Bird Communities over 25 years in Western Oregon

Creator:: Barry, Amy Marie
Abstract:: Snags provide critical habitat for nearly one-third of wildlife species in forests of the Pacific Northwest, so historic declines in snags are thought to have had a strong impact on biodiversity. Resource managers often create snags to mitigate the scarcity of snags within managed forests, but information regarding the function...
Resource Type:: Masters Thesis
Full Text:: committee members, Dr. Mark Harmon and Dr. Jim Kiser, for providing me with feedback, insight, and access

Spatial variability of dust deposition in the Luquillo Mountains, Puerto Rico

Creator:: McClintock, Matthew
Abstract:: Dust deposition on ecosystems with highly weathered soils may provide vital rock-derived nutrients that maintain ecosystem productivity. Because of the difficulties in measuring temporally and spatially heterogeneous dust deposition over ecologically meaningful timescales, evaluations of the spatial variability in dust deposition are extremely rare. In the Luquillo Mountains of Puerto...
Resource Type:: Masters Thesis

Trickle-down ecohydrology : complexity of rainfall interception and net precipitation under forest canopies

Creator:: Allen, Scott T.
Abstract:: Rainfall interception is a primary control over the moisture input to a forested ecosystem through the partitioning of precipitation into throughfall, stemflow, and an evaporated component (i.e. the interception loss). Rainfall interception is a spatially and temporally varying process at multiple scales, but heterogeneity in interception processes are poorly understood...
Resource Type:: Masters Thesis

Dinosaur lung structure and ventilation of the abdominal air sacs in birds

Creator:: Sapp, Methea
Abstract:: The purpose of this study was to identify any ostelogical features which might prevent paradoxical movement (=lateral collapse) of the abdominal air sacs in birds during inhalation. A combination of 26 fresh and frozen adult bird carcasses representing 10 avian orders were procured from local sources. Dissections of each specimen...
Resource Type:: Masters Thesis
Full Text:: , George Poinar, and Mark Harmon for their time and expertise. I am also deeply indebted to both Amy

Recent periglacial debris flows from Mount Rainier, Washington

Creator:: Copeland, Elizabeth A.
Abstract:: Debris flow initiation is controlled by a complex interaction of geology, geomorphology, climate, and weather. In the Cascade Range of Pacific Northwest and mountainous areas globally, patterns of temperature and precipitation are being altered by climate change, which may in turn impact debris flow initiation. Temperature has increased and patterns...
Resource Type:: Masters Thesis
Full Text:: facilitated by Arnie Peterson, Darin Swinney, Bret Cristo, and Barbara Semora, and Mark Meyers. Review

Decomposition and nitrogen dynamics of red alder and Douglas-fir leaf litter in Oregon Coast Range riparian forests

Creator:: Matkins, Joselin
Abstract:: I examined factors regulating decomposition rates of red alder (Alnus rubra)) and Douglas-fir (Pseudotsuga menziesii) leaf litter in Coast Range riparian areas in western Oregon. Overall, this study was designed to examine the influence that leaf litter quality characteristics and decomposition site treatment have on decomposition rates, to provide a...
Resource Type:: Masters Thesis
Full Text:: through several difficult years. I also want to thank committee members Mark Harmon and Manuela Huso

Sitka spruce and western hemlock regeneration after selective harvesting, Tongass National Forest, southeast Alaska

Creator:: Yount, Louise Simmons
Abstract:: The objectives of this study were to determine the species composition and density of natural conifer regeneration following selective logging in southeast Alaska. Therefore, we quantified the density and size of new cohort spruce and hemlock and current seedling bank in 17 selectively logged stands. All stands were in mixed...
Resource Type:: Masters Thesis

Soil carbon and nitrogen in old-growth forests in western Oregon and Washington

Creator:: Remillard, Suzanne Marie
Abstract:: Soil organic carbon (SOC, kg C m-2) is an important component in evaluating global C stores. The nitrogen (TN, kg N m"2) cycle is closely linked to C and understanding its role is also important. Contents and distributions of SOC and TN in soil profiles, to 1-meter depth, were estimated...
Resource Type:: Masters Thesis
Full Text:: committee members. Dr. Bernard Bormann, Dr. Mark Harmon, and Dr. Herb Huddleston for their help in various

ScholarsArchive@OSU

Landscape level patterns in biodiversity : plant species and biomass structure

Influence of a Sedimentary Source of Nd on Deep Ocean εNd Distributions

Created Snag Dynamics and Influence on Cavity-nesting Bird Communities over 25 years in Western Oregon

Spatial variability of dust deposition in the Luquillo Mountains, Puerto Rico

Trickle-down ecohydrology : complexity of rainfall interception and net precipitation under forest canopies

Dinosaur lung structure and ventilation of the abdominal air sacs in birds

Recent periglacial debris flows from Mount Rainier, Washington

Decomposition and nitrogen dynamics of red alder and Douglas-fir leaf litter in Oregon Coast Range riparian forests

Sitka spruce and western hemlock regeneration after selective harvesting, Tongass National Forest, southeast Alaska

Soil carbon and nitrogen in old-growth forests in western Oregon and Washington

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Contributor

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