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Aquatic pesticide best management practices and relational database for the protection of NOAA trust species

Creator:: Gianou, Kelsey, Lam, Jennifer, Emanuel, Robert, Jepson, Paul, and Chan, Sam
Abstract:: Pesticides are widely used to control undesirable pests and may be applied directly to water or lands directly adjacent to water. There can be unintended consequences, however, to native, threatened, and endangered species. There is little information on the impacts of aquatic pesticides and best management practices (BMPs) to NOAA...
Resource Type:: Capstone Project
Full Text:: Emanuel for his continued support and Dr. Paul Jepson who stimulated several ideas for this project. I

Field and greenhouse studies with Acalymma and Diabrotica : protection of cucurbits with a kaolin-based particle film : feeding damage to cucumbers with and without cucurbitacin

Creator:: Reich, Joel A.
Abstract:: Research was conducted in the field and greenhouse to determine if a kaolinite-based particle film, Surround®, would reduce colonization and early season feeding damage in cucurbits by the Western Striped Cucumber Beetle, Acalymma trivitattum (Mannerheim). Greenhouse studies were designed to determine effect of particle film on cucumber dry weight production...
Resource Type:: Masters Thesis
Full Text:: Dr. Paul Jepson, who took time to offer me guidance even though they are incredibly busy with their

Biological control of purple loosestrife Lythrum salicaria by two chrysomelid beetles Galerucella pusilla and G. calmariensis

Creator:: Schooler, Shon
Abstract:: In the first part of this study we monitored the development of biological control of purple loosestrife Lythrum salicaria over a six-year period at Morgan Lake in western Oregon. In 1992, two beetles, Galerucella pusilla and G. calmariensis (Coleoptera: Chrysomelidae), were released to control the wetland weed at this test...
Resource Type:: Masters Thesis
Full Text:: and G. calmariensis Abstract approved: Peter B. McEv In the first part of this study we monitored

Habitat management for beneficial insects on Willamette Valley vegetable and berry farms

Creator:: Russell, Michael C.
Abstract:: Conservation biological control involves manipulating farm landscapes or management systems to enhance populations of beneficial predators of agricultural pests. Farmscaping is one aspect of conservation biological control where predators of important pests are identified, the availability on the farm landscape of resources and habitat components needed by the beneficials to...
Resource Type:: Dissertation
Full Text:: ………………………………………………. 194 Appendix B Phenology, feeding habits, activity patterns, and fertility state of common

Effects of Predator Introductions on Population and Community Dynamics

Creator:: Ingeman, Kurt E.
Abstract:: There is increasing awareness that human activities are altering the ways that natural systems operate and that local shifts in species composition and abundance can lead to abrupt and irreversible global change. Therefore, understanding the processes that buffer biological communities from critical shifts and how our actions affect natural stabilizing...
Resource Type:: Dissertation
Full Text:: . I was very fortunate to have a graduate representative, Paul Jepson, with a background in

A model of trophic evolutionary pathways

Creator:: Morris, A. Kimo
Abstract:: Calow (1983) realized that differences between parasites and their free-living relatives can be explained by the differences in nutrient richness. I propose a model that is based on Calow's idea which identifies the relative position of different trophic strategies (e.g. predation, grazing, parasitism and others) based on (1) the differences...
Resource Type:: Masters Thesis
Full Text:: in order to my committee members, Professors Philippe Rossignol, Charles King, Paul Jepson, and

Enhancement of biological control with beneficial insectary plantings

Creator:: Colley, Micaela Ruth
Abstract:: Five field experiments were conducted to evaluate the relative attractiveness of potential beneficial insectary plants to aphidophagous hover flies and parasitic Hymenoptera and the effectiveness of interplanting selected flowering plants in a broccoli field to enhance biocontrol of the cabbage aphid and green peach aphid. In 1996 we established a...
Resource Type:: Masters Thesis
Full Text:: to Paul Jepson, Anita Azarenko, and Ralph Berry. In the first year of my research I was fortunate

Multiple stressors and amphibian population declines

Creator:: Hatch, Audrey C.
Abstract:: In the past decade, declines in amphibian populations have captured scientific and popular interest. The causes of the declines are likely to be complex and involve interactions between several environmental stressors. Using multifactorial experiments, I investigated the combined effects of several anthropogenic stressors on developing amphibians in Oregon, USA. In...
Resource Type:: Dissertation
Full Text:: . Moreover, exposure to UV-B radiation and exposure to high levels of nitrate reduced larval activity level

Responses and relationships among Fusarium species, sweet corn, and western spotted cucumber beetles

Creator:: Miller, Nathan L. (Nathan Louis)
Abstract:: Sweet corn (Zea mays L.) yields in the Willamette Valley of Oregon have been declining since the early 1990’s. Studies were done to determine if there is a relationship between ear weight and several disease parameters including necrotic crowns or stalk nodes, nodal root rot, radicle root rot, and sub-crown...
Resource Type:: Dissertation
Full Text:: Parke, Dr. Paul Jepson, and Dr. John Fowler, for their ideas, and feedback. I thank Dr. Bill

Linking marine communities and ecosystems : invertebrates mediate nutrient availability in intertidal communities

Creator:: Bracken, Matthew E.
Abstract:: While community ecologists have traditionally focused on local-scale processes, it has become apparent that a broader perspective, which explores the community-level ramifications of material fluxes within and between ecosystems, is necessary to effectively evaluate bottom-up influences on community structure and dynamics. In this dissertation, I employed ecosystem principles to understand...
Resource Type:: Dissertation
Full Text:: I____ 17°E 174°E B) Oregon sites' 46°N BB' SH44°N CA CB*' 42°N 124°W 124W 12 Figure 2.1. Sampling

ScholarsArchive@OSU

Aquatic pesticide best management practices and relational database for the protection of NOAA trust species

Field and greenhouse studies with Acalymma and Diabrotica : protection of cucurbits with a kaolin-based particle film : feeding damage to cucumbers with and without cucurbitacin

Biological control of purple loosestrife Lythrum salicaria by two chrysomelid beetles Galerucella pusilla and G. calmariensis

Habitat management for beneficial insects on Willamette Valley vegetable and berry farms

Effects of Predator Introductions on Population and Community Dynamics

A model of trophic evolutionary pathways

Enhancement of biological control with beneficial insectary plantings

Multiple stressors and amphibian population declines

Responses and relationships among Fusarium species, sweet corn, and western spotted cucumber beetles

Linking marine communities and ecosystems : invertebrates mediate nutrient availability in intertidal communities

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