Index Catalog // ScholarsArchive@OSU

Ecological thresholds, climate extremes, and tree species' distributions across the Pacific coastal United States

Creator:: Lintz, Heather E.
Abstract:: Species' distributions across the landscape are perhaps the least understood yet most conspicuous features of life on earth. Ecologists have long studied species' distributions; yet, many questions remain about why species occur where they do. Such questions persist largely because species' distributions are complex systems with challenging properties like non-linearity,...
Resource Type:: Dissertation
Full Text:: drivers of threshold response. Causal understanding of thresholds detected empirically requires their

Toward a flexible and accurate approach to null network sampling

Creator:: Bright, Zachary A.
Abstract:: Null networks are a type of random graph that is favored for the analysis of a wide variety of real-world networks, including gene-regulatory networks, food webs, and species co-occurrence matrices. As a hypothesis-generating tool, null networks are invaluable because they can reveal network motifs and unusual large-scale properties of networks...
Resource Type:: Masters Thesis
Full Text:: Flexible and Accurate Approach to Null Network Sampling. Abstract Approved: Molly Megraw Null networks

Overwintering of Erysiphe necator and Inoculum Monitoring for Decision Aids

Creator:: Thiessen, Lindsey D.
Abstract:: Grape powdery mildew (Erysiphe necator) causes economic damages to grape worldwide due to the cost of management and injury to berries. Each region where European grapevine (Vitis vinifera) is grown experiences a unique epidemic, and disease prediction models that are based on empirical correlations of weather data to disease fail...
Resource Type:: Dissertation
Full Text:: conditions. Near real-time monitoring of grape powdery mildew epidemics using spore sampling and molecular

Sensitivity of Disease Management Decision Aids to Temperature Input Errors Associated with Sampling Interval and Out-of-Canopy Sensor Placement

Creator:: Pfender, W. F., Gent, D. H., and Mahaffee, W. F.
Abstract:: Many plant disease epidemic models, and the disease management decision aids developed from them, are created based on temperature or other weather conditions measured in or above the crop canopy at intervals of 15 or 30 min. Disease management decision aids, however, commonly are implemented based on hourly weather measurements...
Resource Type:: Article
Full Text:: Sensitivity of Disease Management Decision Aids to Temperature Input Errors Associated with Sampling Interval

Monitoring soil moisture and temperature impacts on soilborne fusarium diseases in processing vegetable cropping systems

Creator:: Buckland, Kristine and Ocamb, Cynthia M.
Abstract:: Sweet corn and snap bean production, amongst other vegetable crops grown in the Willamette Valley of Oregon, are impacted by soilborne diseases caused by Fusarium species. The decline in sweet corn yields due to Fusarium crown and stalk node rot as well as root rot in snap bean and sweet...
Resource Type:: Technical Report
Full Text:: Specialty Crop Block Grant ODA6022GR: 20491 Final Report Title: Monitoring Soil Moisture and

The Willamette Valley (Oregon) Prairie Plant Trait Dataset

Creator:: Clark, Deborah and Wilson, Mark V.
Abstract:: The Willamette Valley (Oregon) Prairie Plant Trait Dataset is a compilation of plant traits of species important in upland prairies, wetland prairies, vernal pools, and emergent wetlands, and in the restoration of prairies and wetlands of the Willamette Valley of Oregon. These species are also found widely throughout the Pacific...
Resource Type:: Dataset

New Tools for Managing Erysiphe necator: Rapid Sampling Approaches and an Exploration of Grower Opinions and Perspectives towards Collective Action and Information Transfer

Creator:: Lowder, Sarah R.
Abstract:: The scale of pest and disease dispersal is often larger than the scale of individual farms. Therefore, an individual grower’s response to pests and diseases can affect and is affected by their surrounding growing region. Individual growers are also not isolated, and engage in various forms of information gathering, sharing,...
Resource Type:: Dissertation
Full Text:: spore sampling method was shown to provide cost- effective monitoring of Erysiphe necator, the causal

Particulate optical scattering coefficients along an Atlantic Meridional Transect

Creator:: Dall Olmo, G., Boss, E., Behrenfeld, M.J., and Westberry, T.K.
Abstract:: The particulate optical backscattering coefficient (bbₚ) is a fundamental optical property that allows monitoring of marine suspended particles both in situ and from space. Backscattering measurements in the open ocean are still scarce, however, especially in oligotrophic regions. Consequently, uncertainties remain in bbₚ parameterizations as well as in satellite estimates...
Resource Type:: Article
Full Text:: backscattering coefficient (bbp) is a fundamental optical property that allows monitoring of marine suspended

Yosemite region nitrogen deposition and patterns in the composition of lichen communities

Creator:: Hutten, Martin
Abstract:: This dissertation describes patterns in epiphytic macrolichen community composition along a nitrogen deposition gradient in the Yosemite region of the Sierra Nevada in California. This region is part of the largest federal air quality Class 1 designated air-shed in the western United States, covering the entire crest of the Sierra...
Resource Type:: Dissertation
Full Text:: Nevada. The principal objectives of the study were to determine the threshold response level of

Benthic algal communities of the Metolius River

Creator:: Sherman, Barbara Jane Powell, 1938-
Abstract:: Samples of benthic algae were collected from the Metolius River of central Oregon at two-week intervals between April 15, 1967 and March 9, 1968. Species of filamentous algae and diatoms present were recorded for every sampling station on each sampling date. Permanent mounts of diatom frustules were prepared. This sampling...
Resource Type:: Dissertation
Full Text:: algae and diatoms present were recorded for every sampling station on each sampling date. Permanent

ScholarsArchive@OSU

Ecological thresholds, climate extremes, and tree species' distributions across the Pacific coastal United States

Toward a flexible and accurate approach to null network sampling

Overwintering of Erysiphe necator and Inoculum Monitoring for Decision Aids

Sensitivity of Disease Management Decision Aids to Temperature Input Errors Associated with Sampling Interval and Out-of-Canopy Sensor Placement

Monitoring soil moisture and temperature impacts on soilborne fusarium diseases in processing vegetable cropping systems

The Willamette Valley (Oregon) Prairie Plant Trait Dataset

New Tools for Managing Erysiphe necator: Rapid Sampling Approaches and an Exploration of Grower Opinions and Perspectives towards Collective Action and Information Transfer

Particulate optical scattering coefficients along an Atlantic Meridional Transect

Yosemite region nitrogen deposition and patterns in the composition of lichen communities

Benthic algal communities of the Metolius River

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