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Effects of stream restoration on macroinvertebrate communities in an Oregon Coast Range system

Creator:: Christensen, M. Jo
Abstract:: Stream-restoration projects are usually designed to improve habitat quality for fishes. These projects manipulate flow patterns, substrate distribution, and amount and placement of large woody debris. Consequently, they also affect the size and composition of the aquatic macroinvertebrate community. This research evaluates two types of fish habitat restoration: off-channel structures...
Resource Type:: Masters Thesis
Full Text:: physical habitat for fishes, they may alter or reduce the availability of food for fishes feeding on

Post-eruption recovery and secondary production of grazing insects in two streams near Mt. St. Helens

Creator:: Meyerhoff, Richard Dietrich
Abstract:: The eruption of Mt. St. Helens provided the opportunity to study secondary production of grazing insects in the context of disturbance. Two stream sites were chosen that significantly differed in how their watersheds were impacted by the eruption. Clearwater Creek was catastrophically disturbed (physical alteration of habitat, loss of riparian...
Resource Type:: Dissertation
Full Text:: , and Jim Sedell, all of whom provided advice, shared information, and/or provided support in the form

Biology of some Oregon rain bettles, Pleocoma spp., associated with fruit trees in Wasco and Hood River counties

Creator:: Ellertson, Floyd Elroy
Resource Type:: Dissertation
Full Text:: (44, p. 53·54) from two males, collected near Glenwood~ Klickitat County, Washington, in ay 1936

A study of the economic status of the ringed-neck or Chinese pheasant in Oregon

Creator:: Allen, Thomas Cort
Resource Type:: Masters Thesis
Full Text:: A study of the economic status of the ringed-neck or

The biologies of two dipterous predators of Dendroctonus pseudotsugae Hopkins (Coleoptera : Scolytdae) in western Oregon and Washington

Creator:: Johnsey, Richard Lee
Abstract:: The objectives of this study were: 1) to learn the life history and habits of Medetera aldrichii Wheeler and a Lonchaea sp. in association with the Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins, in western Oregon and Washington; 2) to determine if the larvae of M. aldrichii were predaceous on the Douglas-fir...
Resource Type:: Masters Thesis
Full Text:: pseudotsugae Hopkins (Coleoptera : Scolytdae) in western Oregon and Washington AN ABSTRACT OF THE THESIS OF

The biology of the balsam woolly aphid, Chermes piceae Ratz., in Oregon and Washington and the identification and evaluation of its native predators

Creator:: Mitchell, Russel Gene
Resource Type:: Dissertation
Full Text:: Ratz., in Oregon and Washington and the Identification and Evaluation of Its Native Predators THE

A biological and systematic study of the armored boreid, Caurinus dectes, with comparative notes on related mecoptera

Creator:: Russell, Loren Kenneth
Abstract:: Caurinus dectes Russell is a minute, brachypterous scorpionfly which was discovered at Marys Peak, Benton County, Oregon, in 1976, and subsequently described as the only representative of the subfamily Caurininae within the Boreidae (snow scorpionflies). Caurinus dectes is now known to range from the Olympic Peninsula and Northern Cascades in...
Resource Type:: Dissertation
Full Text:: Cascades in Washington, to northern Lane County, Oregon. The habitats of C. dectes include moist

Population dynamics of the cinnabar moth, Tyria jacobaeae (Lepidoptera: Arctiidae)

Creator:: Isaacson, Dennis
Abstract:: The dynamics of a field population of the cinnabar moth, Tyria jacobaeae L., were studied near Jordan, Linn County, Oregon. In both 1970 and 1971 larval populations were so large that all foliage of the host weed, tansy ragwort, Senecio jacobaea L., was consumed. The ensuing starvation accounted for the...
Resource Type:: Masters Thesis
Full Text:: jacobaeae L., were studied near Jordan, Linn County, Oregon. In both 1970 and 1971 larval populations were

History and distribution of bee diseases in Oregon

Creator:: Black, A. Burr
Abstract:: This thesis is a discussion of the major bee diseases found in Oregon with notes on minor ailments of bees and on diseases not yet present followed by a history of the introduction and spread of the more important diseases, a history of bee legislation in Oregon and a discussion...
Resource Type:: Masters Thesis
Full Text:: Ma 9, 1939 Title HISTORY AND DISTRIBUTION OF BEE DISEASES IN OREGON Abstract approved by or

Biology and adult variability in an Oregon population of Leptarctiacaliforniae (Walker) (Lepidoptera: Arctiidae)

Creator:: Mays, David Lee
Abstract:: Leptarctia californiae (Walker) was studied on clear and semi-forested southern slopes in the Coast Range Mountains of Benton County, Oregon. The spring of 1965 had an unusually long warm period (21 days) resulting in adult emergence approximately 25 days earlier than in the cooler spring of 1966. Peak flight activity...
Resource Type:: Masters Thesis
Full Text:: County, Oregon. The spring of 1965 had an unusually long warm period (21 days) resulting in adult

ScholarsArchive@OSU

Effects of stream restoration on macroinvertebrate communities in an Oregon Coast Range system

Post-eruption recovery and secondary production of grazing insects in two streams near Mt. St. Helens

Biology of some Oregon rain bettles, Pleocoma spp., associated with fruit trees in Wasco and Hood River counties

A study of the economic status of the ringed-neck or Chinese pheasant in Oregon

The biologies of two dipterous predators of Dendroctonus pseudotsugae Hopkins (Coleoptera : Scolytdae) in western Oregon and Washington

The biology of the balsam woolly aphid, Chermes piceae Ratz., in Oregon and Washington and the identification and evaluation of its native predators

A biological and systematic study of the armored boreid, Caurinus dectes, with comparative notes on related mecoptera

Population dynamics of the cinnabar moth, Tyria jacobaeae (Lepidoptera: Arctiidae)

History and distribution of bee diseases in Oregon

Biology and adult variability in an Oregon population of Leptarctiacaliforniae (Walker) (Lepidoptera: Arctiidae)

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