Index Catalog // ScholarsArchive@OSU

Public knowledge, preferences and involvement in adaptive ecosystem management

Creator:: Williams, Robert Lawrence
Abstract:: Few studies analyze the relationship between ecological knowledge and public preferences for natural resource management options. The Central Cascades Adaptive Management Area (CCAMA) and McKenzie watershed of western Oregon provides an opportunity to examine the relationship. This research project employs a mixed model approach to explore public knowledge of forest...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Robert Lawrence Williams for

Linking Wolves and Plants: Aldo Leopold on Trophic Cascades

Creator:: Ripple, William J. and Beschta, Robert L.
Abstract:: Aldo Leopold, perhaps best known for his revolutionary and poignant essays about nature, was also an eloquent advocate during the 1930s and 1940s of the need to maintain wolves and other large carnivores in forest and range ecosystems.He indicated that their loss set the stage for ungulate irruptions and ecosystem...
Resource Type:: Article
Full Text:: Plants: Aldo Leopold on Trophic Cascades Author(s): WILLIAM J. RIPPLE and ROBERT L. BESCHTA Source

Wolves and the Ecology of Fear: Can Predation Risk Structure Ecosystems?

Creator:: Ripple, William J. and Beschta, Robert L.
Abstract:: We investigated how large carnivores, herbivores, and plants may be linked to the maintenance of native species biodiversity through trophic cascades. The extirpation of wolves (Canis lupus) from Yellowstone National Park in the mid-1920s and their reintroduction in 1995 provided the opportunity to examine the cascading effects of carnivore–herbivore interactions...
Resource Type:: Article
Full Text:: Ecology of Fear: Can Predation Risk Structure Ecosystems? Author(s): WILLIAM J. RIPPLE and ROBERT L

Onshore-offshore variations in copepod community structure off the Oregon coast during the summer upwelling season

Creator:: Morgan, Cheryl A., Peterson, William T., and Emmett, Robert L.
Abstract:: During the summer of 1994, 1996, and 1997, we conducted hydrographic and plankton surveys of the upper 70 m in the nearshore, the continental shelf, and off shelf oceanic waters off Oregon, USA. Copepod densities and biomass were estimated along 4 transects from each cruise. The on shelf copepod biomass...
Resource Type:: Article
Full Text:: community structure off the Oregon coast during the summer upwelling season Cheryl A. Morgan1,*, William T

Optical scattering and backscattering by organic and inorganic particulates in U.S. coastal waters

Creator:: Snyder, William A., Arnone, Robert A., Davis, Curtiss O., Goode, Wesley, Gould, Richard W., Ladner, Sherwin, Lamela, Gia, Rhea, William J., Stavn, Robert, Sydor, Michael, and Weidemann, Allen
Abstract:: We present the results of a study of optical scattering and backscattering of particulates for three coastal sites that represent a wide range of optical properties that are found in U.S. near-shore waters. The 6000 scattering and backscattering spectra collected for this study can be well approximated by a power-law...
Resource Type:: Article
Full Text:: inorganic particulates in U.S. coastal waters William A. Snyder,1,* Robert A. Arnone,2 Curtiss O. Davis,3

The Very Stable Boundary Layer on Nights with Weak Low-Level Jets

Creator:: Banta, Robert M., Mahrt, Larry, Vicker, Dean, Sun, Jielun, Balsley, Ben B., Pichugina, Yelena L., and Williams, Eric J.
Abstract:: The light-wind, clear-sky, very stable boundary layer (vSBL) is characterized by large values of bulk Richardson number. The light winds produce weak shear, turbulence, and mixing, and resulting strong temperature gradients near the surface. Here five nights with weak-wind, very stable boundary layers during the Cooperative Atmosphere–Surface Exchange Study (CASES-99)...
Resource Type:: Article
Full Text:: ROBERT M. BANTA Chemical Sciences Division, Earth System Research Laboratory, National Oceanic and

Beached birds and physical forcing in the California Current System

Creator:: Parrish, Julia K., Bond, Nicholas, Nevins, Hannah, Mantua, Nathan, Loeffel, Robert, Peterson, William T., and Harvey, James T.
Abstract:: Seabirds have often been proposed as environmental indicators. Beached bird data may provide an additional data source and such data is efficacious because it can reliably be collected by volunteers. In addition to anthropogenic factors, such as oil spills, changes in the ocean-atmosphere can affect carcass beaching rate in 3...
Resource Type:: Article
Full Text:: Current System Julia K. Parrish1,*, Nicholas Bond2, Hannah Nevins3, Nathan Mantua1, 2, Robert Loeffel4

Ocean PHILLS hyperspectral imager : design, characterization, and calibration

Creator:: Davis, Curtiss O., Bowles, Jeffrey, Leathers, Robert A., Korwan, Dan, Downes, T. Valerie, Snyder, William A., Rhea, W. Joe, Chen, Wei, Fisher, John, Bissett, W. Paul, and Reisse, Robert Alan
Abstract:: The Ocean Portable Hyperspectral Imager for Low-Light Spectroscopy (Ocean PHILLS) is a hyperspectral imager specifically designed for imaging the coastal ocean. It uses a thinned, backside-illuminated CCD for high sensitivity and an all-reflective spectrograph with a convex grating in an Offner configuration to produce a nearly distortion-free image. The sensor,...
Resource Type:: Article
Full Text:: Curtiss O. Davis, Jeffrey Bowles, Robert A. Leathers, Dan Korwan, T. Valerie Downes, William A. Snyder, W

Bottom Characterization from Hyperspectral Image Data

Creator:: Philpot, William, Davis, Curtiss O., Bissett, W. Paul, Mobley, Curtis D., Kohler, David D. R., Lee, Zhongping, Bowles, Jeffrey, Steward, Robert G., Agrawal, Yogesh, Trowbridge, John, Gould, Richard W. Jr., and Arnone, Robert A.
Abstract:: In optically shallow waters, i.e., when the bottom is visible through the water, a tantalizing variety and level of detail about bottom characteristics are apparent in aerial imagery (Figure 1a). Some information is relatively easy to extract from true color, 3-band imagery (e.g., the presence and extent of submerged vegetation),...
Resource Type:: Article
Full Text:: the bottom is visible (up to 20 meters in the clearest waters). William Philpot (wdp2@cornell.edu

The state of California current, 2000 – 2001 : a third straight La Niña year

Creator:: Durazo, Reginaldo, Collins, Curtis A., Hyrenbach, David K., Schwing, Franklin B., Baumgartner, Timothy R., García, Joaqúin, Loya, Daniel, Smith, Robert L. (Robert Lloyd), 1935-, Wheeler, Patricia A., Bograd, Steven J., Huyer, Adriana, 1945-, Lynn, Ronald J., and Sydeman, William J.
Abstract:: This report is the eighth in a series that describe recent oceanographic observations within the California Current system, from Oregon to Baja California. The emphasis here is placed on the observations conducted concurrently by the CalCOFI (California Cooperative Oceanic Fisheries Investigations), IMECOCAL (Investigaciones Mexicanas de la COrriente de CALifornia), and...
Resource Type:: Article
Full Text:: , California 92038 WILLIAM J. SYLIEMAN Point lieyes Bird Obtervatory Marine Science l’rogram 4900

ScholarsArchive@OSU

Public knowledge, preferences and involvement in adaptive ecosystem management

Linking Wolves and Plants: Aldo Leopold on Trophic Cascades

Wolves and the Ecology of Fear: Can Predation Risk Structure Ecosystems?

Onshore-offshore variations in copepod community structure off the Oregon coast during the summer upwelling season

Optical scattering and backscattering by organic and inorganic particulates in U.S. coastal waters

The Very Stable Boundary Layer on Nights with Weak Low-Level Jets

Beached birds and physical forcing in the California Current System

Ocean PHILLS hyperspectral imager : design, characterization, and calibration

Bottom Characterization from Hyperspectral Image Data

The state of California current, 2000 – 2001 : a third straight La Niña year

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