Index Catalog // ScholarsArchive@OSU

Potential for Coastal Wetland Blue Carbon Offset Projects in the Point Reyes Area

Creator:: Minnick, Margaret T.
Abstract:: Point Reyes is a 100-square mile peninsula located on the California coast about 30 miles north of San Francisco. The peninsula, surrounding bays, and neighboring coastal mainland are a unique biodiversity hotspot. The area underwent heavy human use, including ranching and logging, during the late 1800s and early 1900s. Conservation...
Resource Type:: Capstone Project
Full Text:: Point Double Point P O I N T R E Y E S B E A C H D r a k e s B e a c W i l dc a t

Probabilistic assessment of wildfire hazard and municipal watershed exposure

Creator:: Scott, Joe, Helmbrecht, Don, Thompson, Matthew P., Calkin, David E., and Marcille, Kate
Abstract:: The occurrence of wildfires within municipal watersheds can result in significant impacts to water quality and ultimately human health and safety. In this paper, we illustrate the application of geospatial analysis and burn probability modeling to assess the exposure of municipal watersheds to wildfire. Our assessment of wildfire exposure consists...
Resource Type:: Article
Full Text:: wildfire hazard and municipal watershed exposure Joe Scott • Don Helmbrecht • Matthew P. Thompson • David

Rangeland Privatization and the Maasai Experience: Social Capital and the Implications for Traditional Resource Management in Southern Kenya

Creator:: Sundstrom, Shiloh, Tynon, Joanne F., and Western, David
Abstract:: Using qualitative research methods we examined how group ranch privatization and settlement of individual Maasai households across the landscape have affected traditional livestock herding and social capital mechanisms of Maasai livestock herders. This process has altered decision-making processes, social networks, and cooperation of Maasai herders and limited access to water...
Resource Type:: Article
Full Text:: 541.737.1499 FAX 541.737.3049 David Western African Conservation Centre Nairobi, Kenya Abstract

Fertilization impacts on Swiss needle cast disease severity in western Oregon

Creator:: Mulvey, Robin L., Shaw, David C., and Maguire, Douglas A.
Abstract:: The influence of fertilization on disease severity is unknown in most forest pathosystems. Fertilization treatments were randomly applied to 0.01 ha plots centered on individual dominant or co-dominant Douglas-fir trees in ten Douglas-fir stands from coastal Oregon to the foothills of the Oregon Cascade Range, USA. This region is affected...
Resource Type:: Article
Full Text:: . Mulvey ⇑, David C. Shaw, Douglas A. Maguire Department of Forest Engineering, Resources and Management

Reconciling estimates of the contemporary North American carbon balance among terrestrial biosphere models, atmospheric inversions, and a new approach for estimating net ecosystem exchange from inventory-based data

Creator:: Hayes, Daniel J., Turner, David P., Stinson, Graham, McGuire, A. David, Wei, Yaxing, West, Tristram O., Heath, Linda S., de Jong, Bernardus, McConkey, Brian G., Birdsey, Richard A., Kurz, Werner A., Jacobson, Andrew R., Huntzinger, Deborah N., Pan, Yude, Post, W. Mac, and Cook, Robert B.
Abstract:: We develop an approach for estimating net ecosystem exchange (NEE) using inventory-based information over North America (NA) for a recent 7-year period (ca. 2000–2006). The approach notably retains information on the spatial distribution of NEE, or the vertical exchange between land and atmosphere of all non-fossil fuel sources and sinks...
Resource Type:: Article
Full Text:: estimating net ecosystem exchange from inventory-based data1 DANIEL J . HAYES * 1 , DAV ID P . TURNER

Recreation Specialization and Related Concepts in Leisure Research

Creator:: Needham, Mark D., Scott, David, and Vaske, Jerry J.
Abstract:: More than 40 years have passed since Shafer (1969) challenged the existence of the “average camper.” Recognizing that participants in recreation activities are heterogeneous in their commitments and interests, researchers have emphasized the importance of differentiating users into meaningful homogeneous subgroups. In his seminal article, Bryan (1977) coined the concept...
Resource Type:: Article
Full Text:: Leisure Research Mark D. Needham 1 David Scott 2 Jerry J. Vaske 3

Arbutus menziesii (Ericaceae) facilitates regeneration dynamics in mixed evergreen forests by promoting mycorrhizal fungal diversity and host connectivity

Creator:: Kennedy, Peter G., Smith, Dylan P., Horton, Tom R., and Molina, Randy J.
Abstract:: • Premise of study: In the mixed evergreen forests in the western United States, Arbutus menziesii is able to quickly resprout following disturbance and, as such, act as a nurse tree during forest regeneration. The mechanism for this nurse tree effect has frequently been ascribed to mycorrhizal fungi, but no...
Resource Type:: Article
Full Text:: assistance of David Perry and Marty Main in identifying the study area and providing assistance with the

Hydraulic safety margins and embolism reversal in stems and leaves: Why are conifers and angiosperms so different?

Creator:: Johnson, Daniel M., McCulloh, Katherine A., Woodruff, David R., and Meinzer, Frederick C.
Abstract:: Angiosperm and coniferous tree species utilize a continuum of hydraulic strategies. Hydraulic safety margins (defined as differences between naturally occurring xylem pressures and pressures that would cause hydraulic dysfunction, or differences between pressures resulting in loss of hydraulic function in adjacent organs (e.g., stems vs. leaves) tend to be much...
Resource Type:: Article
Full Text:: a A R R A A K P X E C V N C 1 p m m s 0 h Plant Science 195 (2012) 48– 53 Contents lists

Evidence for xylem embolism as a primary factor in dehydration-induced declines in leaf hydraulic conductance

Creator:: Johnson, Daniel M., McCulloh, Katherine A., Woodruff, David R., and Meinzer, Frederick C.
Abstract:: Hydraulic conductance of leaves (K[subscript leaf]) typically decreases with increasing water stress and recent studies have proposed different mechanisms responsible for decreasing K[subscript leaf]. We measured K[subscript leaf] concurrently with ultrasonic acoustic emissions (UAEs) in dehydrating leaves of several species to determine whether declining K[subscript leaf] was associated with xylem...
Resource Type:: Article
Full Text:: , KATHERINE A. MCCULLOH2, DAVID R. WOODRUFF3 & FREDERICK C. MEINZER3 1Nicholas School of the Environment

Evaluation of mixed-effects models for predicting Douglas-fir mortality

Creator:: Groom, Jeremiah D., Hann, David W., and Temesgen, Hailemariam
Abstract:: We examined the performance of several generalized linear fixed- and mixed-effects individual-tree mortality models for Douglas-fir stands in the Pacific Northwest. The mixed-effects models accounted for sampling and study design overdispersion. Inclusion of a random intercept term reduced model bias by 88% relative to the fixed-effects model; however, model discrimination...
Resource Type:: Article
Full Text:: 10 11 David W. Hann 12 Department of Forest Engineering, Resources, and Management 13 Oregon

ScholarsArchive@OSU

Potential for Coastal Wetland Blue Carbon Offset Projects in the Point Reyes Area

Probabilistic assessment of wildfire hazard and municipal watershed exposure

Rangeland Privatization and the Maasai Experience: Social Capital and the Implications for Traditional Resource Management in Southern Kenya

Fertilization impacts on Swiss needle cast disease severity in western Oregon

Reconciling estimates of the contemporary North American carbon balance among terrestrial biosphere models, atmospheric inversions, and a new approach for estimating net ecosystem exchange from inventory-based data

Recreation Specialization and Related Concepts in Leisure Research

Arbutus menziesii (Ericaceae) facilitates regeneration dynamics in mixed evergreen forests by promoting mycorrhizal fungal diversity and host connectivity

Hydraulic safety margins and embolism reversal in stems and leaves: Why are conifers and angiosperms so different?

Evidence for xylem embolism as a primary factor in dehydration-induced declines in leaf hydraulic conductance

Evaluation of mixed-effects models for predicting Douglas-fir mortality

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