Index Catalog // ScholarsArchive@OSU

The influence of canopy type and seasons on adult aquatic insect emergence and riparian spiders in the Oregon Coast Range

Creator:: Premdas, Sharmila
Abstract:: The objective of my study was to examine differences in riparian tree and shrub composition associated with adult aquatic emergence and implications for terrestrial spiders in these sites. Seasonal abundance and biomass of adult emergent aquatic insects, riparian arthropod abundances and spider densities were compared between conifer- and hardwood-dominated sites...
Resource Type:: Masters Thesis

Structuring habitat to conserve ground beetles (Coleoptera: Carabidae) and reduce summer annual weeds in agroecosystems

Creator:: Green, Jessica M.
Abstract:: Weed management in sustainable farming systems often requires the integration of several different pest management techniques. Cultural, biological, and chemical pest control efforts can be utilized to contribute to the common goal of reducing weeds in vegetable row crop systems. This research addresses how common disturbances such as tillage and...
Resource Type:: Masters Thesis

Efficacy of Empirical Seed Zones: Pseudoroegneria Spicata Reproductive Phenology & Seedling Stage Traits

Creator:: Prive, Kathryn A.
Abstract:: Ecological restoration is needed to mitigate losses to biodiversity. Restoration success is enhanced through the use of native plant materials that are genetically diverse and locally adapted. Seed transfer zones have been developed to delineate geographic areas where native seed can be collected and distributed with reduced risk of maladaptation....
Resource Type:: Masters Thesis
Full Text:: cherish forever. Thanks also to Dr. Ron Reuter and Dr. Peter McEvoy, the other members of my graduate

Effects of Diet and Humidity on Drosophila suzukii Flight Performance

Creator:: Wong, Jessica S.
Abstract:: Drosophila suzukii is a global and economically significant pest of berries and other soft fruits. This insect can survive and reproduce under a wide variety of environmental conditions and with a substantial number of cultivated and wild hosts. Management of D. suzukii is commonly done with chemical control strategies. However,...
Resource Type:: Masters Thesis

Diverse consumer guilds in intertidal communities of Oregon and the Republic of Panama and their effects on prey assemblages

Creator:: Gaines, Steven D.
Abstract:: Low intertidal communities of Oregon and Panama have many predator and herbivore species. This diversity of consumers is important to the organization of both communities because of qualitative differences among the consumer species in their ability to circumvent specific prey defenses. In Oregon, the red alga Iridaea cordata is protected...
Resource Type:: Dissertation
Full Text:: thesis committee, Drs. Charles King, Peter McEvoy, and Harry Phinney, for greatly improving these

Population and production ecology of Lipsothrix spp. (Diptera:Tipulidae)

Creator:: Dudley, Thomas L.
Abstract:: Craneflies of the genus Lipsothrix inhabit decomposing wood in streams. The life cycles and ecological relationships of L. nigrilinea (Doane) and L. fenderi Alexander were investigated to determine how they exploit and respond to the wood habitat and their role in degradation of woody debris in western Oregon. Surveys of...
Resource Type:: Masters Thesis
Full Text:: my committee, Peter McEvoy, Bruce Menge and George Beaudreau, have been helpful, as have been

Bottom-up and top-down forces in tidepools : the influence of nutrients, herbivores, and wave exposure on community structure

Creator:: Nielsen, Karina Johanna
Abstract:: The relationship between nutrients and community structure is poorly understood in open-coast habitats. I created a system of artificial tidepools, of identical age and physical dimensions, at two sites that differed in wave exposure, and manipulated nutrient levels and the abundance of herbivores. Using these unique field mesocosms, I explored...
Resource Type:: Dissertation
Full Text:: reminded me to have fun. I would like to thank my committee members, Peter McEvoy, Richard Emlet and

Biodiversity : illustrations of some concepts, causes, and consequences

Creator:: Russell, Roland B.
Abstract:: Careful analysis and thoughtful synthesis will be necessary for expanding the envelope of ecological understanding. This work is my attempt at communicating both of these, in relation to three questions about our understanding of the structure and dynamics of biological diversity. These questions focus on a) advancing our understanding of...
Resource Type:: Dissertation
Full Text:: Lubchenco, Peter McEvoy, Bruce Menge, Phil Rossignol, and Dan Schafer; you make a pretty amazing team. Dave

Enhancing the predatory potential of hoverflies on aphids in Oregon broccoli fields with floral resources

Creator:: Ambrosino, Mario D.
Abstract:: Four key aspects of the relationship between predatory hoverflies and the aphid pest Brevicoryne brassicae L. on broccoli were investigated in the Willamette Valley, Oregon USA: 1) the relationship between aphid density and hoverfly oviposition, 2) the larval voracity of key hoverfly species, 3) the preferences of hoverflies and broccoli...
Resource Type:: Dissertation
Full Text:: the other members of my committee, Dr. Peter McEvoy, Dr. Glenn Fisher, and Dr. Bill Proebsting for

Using stable isotopes and visual gut examination to determine the diet composition of Pterostichus melanarius (Coleoptera: Carabidae) in western Oregon vegetable row crops

Creator:: Moulton, Laurel A.
Abstract:: The omnivorous ground beetle, Pterostichus melanarius Illager (Coleoptera: Carabidae), is a ubiquitous inhabitant of western Oregon crop land. Because it is often the most abundant ground beetle, and attains densities that could lead to serious impacts on its prey sources, I sought to understand the overall diet composition, and specifically...
Resource Type:: Masters Thesis
Full Text:: resources and ideas for my work. Special thanks to Peter McEvoy for his dedication and insight into

ScholarsArchive@OSU

The influence of canopy type and seasons on adult aquatic insect emergence and riparian spiders in the Oregon Coast Range

Structuring habitat to conserve ground beetles (Coleoptera: Carabidae) and reduce summer annual weeds in agroecosystems

Efficacy of Empirical Seed Zones: Pseudoroegneria Spicata Reproductive Phenology & Seedling Stage Traits

Effects of Diet and Humidity on Drosophila suzukii Flight Performance

Diverse consumer guilds in intertidal communities of Oregon and the Republic of Panama and their effects on prey assemblages

Population and production ecology of Lipsothrix spp. (Diptera:Tipulidae)

Bottom-up and top-down forces in tidepools : the influence of nutrients, herbivores, and wave exposure on community structure

Biodiversity : illustrations of some concepts, causes, and consequences

Enhancing the predatory potential of hoverflies on aphids in Oregon broccoli fields with floral resources

Using stable isotopes and visual gut examination to determine the diet composition of Pterostichus melanarius (Coleoptera: Carabidae) in western Oregon vegetable row crops

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