Index Catalog // ScholarsArchive@OSU

Effects of stand density on the growth of young Douglas-fir trees

Creator:: Woodruff, David R., Bond, Barbara J., Ritchie, Gary A., and Scott, William
Abstract:: The objectives of this study were (i) to provide further evidence of a positive correlation of stand density with early growth of coastal Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco var. menziesii); (ii) to determine when after planting the positive growth response occurs and how long it lasts; and (iii) to use...
Resource Type:: Article
Full Text:: Douglas-fir trees David R. Woodruff, Barbara J. Bond, Gary A. Ritchie, and William Scott Abstract: The

Investigation of limestone ecotypes of white spruce based on a provenance test series

Creator:: Lesser, Mark R., Cherry, Marilyn, and Parker, William H.
Abstract:: Previous laboratory and field studies have presented evidence for the existence of limestone ecotypes in white spruce (Picea glauca (Moench) Voss). Remeasurements of the range-wide 410 series of provenance trials were used for further evaluation of the existence of these ecotypes. In 2001, heights were measured of 23 provenances grown...
Resource Type:: Article
Full Text:: provenance test series Mark R. Lesser, Marilyn Cherry, and William H. Parker Abstract: Previous laboratory

Berry-producing shrub characteristics following wolf reintroduction in Yellowstone National Park

Creator:: Beschta, Robert L. and Ripple, William J.
Abstract:: Gray wolves (Canis lupus) were reintroduced into Yellowstone National Park in 1995-96, thus completing the park’s large predator guild. In the fall of 2010, approximately 15 years after wolf reintroduction, we sampled ten genera/species of berry-producing shrubs within 97 aspen (Populus tremuloides) stands in the park’s northern ungulate winter range....
Resource Type:: Article
Full Text:: following wolf reintroduction in Yellowstone National Park Robert L. Beschta*, and William J. Ripple 1

Clonal expansion and seedling recruitment of Oregon grape (Berberis nervosa) in Douglas-fir (Pseudotsuga menziesii) forests: comparisons with salal (Gaultheria shallon)

Creator:: Huffman, David W. (William), 1962- and Tappeiner, John C.
Abstract:: Seedling regeneration and morphology of Oregon grape (Berberis nervosa Pursh) and salal (Gaultheria shallon Pursh) were studied in thinned and unthinned Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) stands in the central Coast Range, Oregon. Above- and below-ground growth of both species were significantly and negatively correlated with stand density. Oregon grape...
Resource Type:: Article
Full Text:: positively cor- related (p = 0.006; r = 0.59) with the number of decaying logs per plot. This relationship

Influence of forest age on forms of carbon in Douglas-fir soils in the Oregon Coast Range

Creator:: Entry, James A. and Emmingham, William H.
Abstract:: The amount and type of carbon (C) in a forest soil reflects the past balance between C accumulation and loss. In an old-growth forest soil, C is thought to be in dynamic equilibrium between accumulations and losses. Disturbance upsets this equilibrium by altering the microclimate, the amount and type of...
Resource Type:: Article
Full Text:: carbon in Douglas-fir soils in the Oregon Coast Range James A. Entry and William H. Emmingham Abstract

Effects of bison on willow and cottonwood in northern Yellowstone National Park

Creator:: Painter, Luke E. and Ripple, William J.
Abstract:: On the northern ungulate winter range of Yellowstone Park, willow (Salix spp.) and cottonwood (Populus angustifolia and P. balsamifera) have increased in height and cover in some places since the reintroduction of wolves (Canis lupus) and the subsequent changes in elk (Cervus elaphus) behavior and population densities. However, in the...
Resource Type:: Article
Full Text:: National Park 5 6 Luke E. Painter1 and William J. Ripple 7 Department of Forest Ecosystems and

Reduction in carbon uptake during turn of the century drought in western North America

Creator:: Schwalm, Christopher R., Williams, Christopher A., Schaefer, Kevin, Baldocchi, Dennis D., Black, T. Andrew, Goldstein, Allen H., Law, Beverly E., Oechel, Walter C., Paw U, Kyaw Tha, and Scott, Russel L.
Abstract:: Fossil fuel emissions aside, temperate North America is a net sink of carbon dioxide at present¹⁻³. Year-to-year variations in this carbon sink are linked to variations in hydroclimate that affect net ecosystem productivity³,⁴. The severity and incidence of climatic extremes, including drought, have increased as a result of climate warming⁵⁻⁸....
Resource Type:: Article
Full Text:: North America Christopher R. Schwalm1*, Christopher A. Williams2, Kevin Schaefer3, Dennis Baldocchi4,5

Thinning ponderosa pine (Pinus ponderosa) stands reduces mortality while maintaining stand productivity

Creator:: Zhang, Jianwei, Ritchie, Martin W., Maguire, Douglas A., and Oliver, William W.
Abstract:: We analyzed 45 years of data collected from three ponderosa pine (Pinus ponderosa Douglas ex P. Lawson & C. Lawson) levels-of-growing-stock installations in Oregon (OR) and northern California (CA), USA, to determine the effect of stand density regimes on stand productivity and mortality. We found that periodic annual increment (PAI)...
Resource Type:: Article
Full Text:: . Maguire, and William W. Oliver Abstract:We analyzed 45 years of data collected from three ponderosa pine

Widespread Mesopredator Effects After Wolf Extirpation

Creator:: Ripple, William J., Wirsing, Aaron J., Wilmers, Christopher C., and Letnic, Mike
Abstract:: Herein, we posit a link between the ecological extinction of wolves in the American West and the expansion in distribution, increased abundance, and inflated ecological influence of coyotes. We investigate the hypothesis that the release of this mesopredator from wolf suppression across much of the American West is affecting, via...
Resource Type:: Article
Full Text:: Widespread Mesopredator Effects After Wolf Extirpation 2 3 WILLIAM J. RIPPLE 1 , Department of Forest

Predicting growth response of shrubs to clear-cutting and site preparation in coastal Oregon forests

Creator:: Knowe, Steven A. (Steven Alan), 1954-, Stein, William I., and Shainsky, L. J.
Abstract:: Cover-projection models were developed based on algebraic difference formulations of an exponential-power function to describe shrub recovery and development patterns after clear-cutting and site preparation. We tested the effect of six treatments on shrub growth patterns by incorporating indicator variables into the rate and shape parameters of the models for...
Resource Type:: Article
Full Text:: preparation in coastal Oregon forests1 Steven A. Knowe, William I. Stein, and L.J. Shainsky Abstract: Cover

ScholarsArchive@OSU

Effects of stand density on the growth of young Douglas-fir trees

Investigation of limestone ecotypes of white spruce based on a provenance test series

Berry-producing shrub characteristics following wolf reintroduction in Yellowstone National Park

Clonal expansion and seedling recruitment of Oregon grape (Berberis nervosa) in Douglas-fir (Pseudotsuga menziesii) forests: comparisons with salal (Gaultheria shallon)

Influence of forest age on forms of carbon in Douglas-fir soils in the Oregon Coast Range

Effects of bison on willow and cottonwood in northern Yellowstone National Park

Reduction in carbon uptake during turn of the century drought in western North America

Thinning ponderosa pine (Pinus ponderosa) stands reduces mortality while maintaining stand productivity

Widespread Mesopredator Effects After Wolf Extirpation

Predicting growth response of shrubs to clear-cutting and site preparation in coastal Oregon forests

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