Index Catalog // ScholarsArchive@OSU

The use of native macroinverebrates to assess pesticide risk to Oregon streams

Creator:: Peterson, Jennifer L.
Resource Type:: Dissertation

The effects of water withdrawals on the emergence timing, adult body mass, and total emerging biomass of aquatic insects from two northeast Oregon rivers

Creator:: Brown, Phil D.
Abstract:: Small low-head diversion dams are capable of removing much of the flow of a river, often resulting in increased water temperatures and habitat loss. Warmer temperatures have been shown to accelerate aquatic invertebrate growth and development, and discharge reductions can reduce instream habitat, suggesting that water withdrawals may alter both...
Resource Type:: Masters Thesis
Full Text:: profound effect on the life histories of aquatic invertebrates. Temperature plays a direct role in the

Respiratory strategies and associated exchange epithelia as determinants on contaminant uptake in aquatic insects

Creator:: Buchwalter, David B.
Abstract:: Aquatic insects are used extensively to evaluate water quality. Despite their widespread use as indicator organisms, relatively little is known about the organismal characteristics that determine sensitivity differences to individual and multiple stressors. Insects have evolved several respiratory strategies that range from breathing atmospheric air to utilizing dissolved oxygen in...
Resource Type:: Dissertation
Full Text:: our limited understanding of the organismal characteristics that mediate aquatic insect responses to

The response of nitrifying bacteria to treatments of N-Serve and Roundup in continuous-flow soil columns

Creator:: Rhodes, Albert N.
Abstract:: This study examined the effects of Roundup [N-(phosphonomethyl) glycine] and N-Serve [2-chloro-6- (trichloromethyl) pyridine] on nitrifying organisms in static batch, perfusion soil columns, and a new continuous-flow soil column system. The continuous-flow method is new to nitrification studies and was shown to produce greater nitrifier activity than either static batch...
Resource Type:: Masters Thesis
Full Text:: Prosser (1987), on the other 10 hand, examined the effect of surface specificity and attachment on

Ultraviolet radiation as an environmental stressor of amphibians

Creator:: Bancroft, Betsy A.
Abstract:: My thesis explored the effects of and potential mediating mechanisms for an important environmental stressor, ultraviolet-B (UVB) radiation. UVB radiation has negative effects on organisms in both terrestrial and aquatic systems. I used meta-analysis to quantify the effects of UVB radiation on a diversity of aquatic organisms (Chapter 2). UVB...
Resource Type:: Dissertation
Full Text:: negative effect of UVB on aquatic organisms, the suggestion that UVB negatively affects amphibians has

Effect of Various Pesticides on Lettuce Physiology and Yield

Creator:: Toscano, N. C.
Resource Type:: Conference Proceeding
Full Text:: Residue, PPm <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 EFFECT OF VARIOUS PESTICIDES ON LETTUCE PHYSIOLOGY AND

Consequences of coumaphos and Varroa destructor on drone honey bee sperm quantity

Creator:: Delaney, Deborah Anne
Abstract:: The number of drones and genetic diversity among drones are essential components to a well mated queen. Varroa destructor preferentially parasitizes drone brood, and is thought to be responsible for the loss of feral populations that once provided additional drones for honey bee mating areas. It is necessary to use...
Resource Type:: Masters Thesis
Full Text:: subtle effects of compounds that are directly introduced into the hive. The effect of coumaphos on

Biochemical and physiological indicators of behavioral impairment in salmonids exposed to chlorpyrifos and copper

Creator:: Sandahl, Jason
Abstract:: The purpose of this work was to determine if environmentally-relevant concentrations of chlorpyrifos and copper, two commonly detected chemicals in Western surface waters, can negatively impact the biological health of salmonids. Both compounds are highly neurotoxic to fish, but each with distinct biological target sites and mechanisms of action. We...
Resource Type:: Dissertation
Full Text:: were developed in the absence of information about some of these subtle but real impacts on aquatic

Effects of pesticides on estuarine organisms : progress report : May 1, 1964 through May 31, 1966

Creator:: Millemann, Raymond E., Oregon State University. Department of Fisheries and Wildlife, Oregon State University. Department of Agricultural Chemistry, and United States. Public Health Service. Division of Environmental Engineering and Food Protection
Abstract:: "The acute toxicity of Sevin and its hydrolytic product 1-naphthol to 10 species of marine animals was determined." (from Summary)
Resource Type:: Technical Report
Full Text:: information was needed on the effect of Sevin and its degradation products on estuarine organisms before its

Assessing the impact of microbial pesticides on nontarget insects : laboratory versus field tests

Creator:: James, Rosalind R.
Resource Type:: Dissertation
Full Text:: significant effect of treatment on insect survival. If a significant effect was seen, a Tukey's LSD (SAS

ScholarsArchive@OSU

The use of native macroinverebrates to assess pesticide risk to Oregon streams

The effects of water withdrawals on the emergence timing, adult body mass, and total emerging biomass of aquatic insects from two northeast Oregon rivers

Respiratory strategies and associated exchange epithelia as determinants on contaminant uptake in aquatic insects

The response of nitrifying bacteria to treatments of N-Serve and Roundup in continuous-flow soil columns

Ultraviolet radiation as an environmental stressor of amphibians

Effect of Various Pesticides on Lettuce Physiology and Yield

Consequences of coumaphos and Varroa destructor on drone honey bee sperm quantity

Biochemical and physiological indicators of behavioral impairment in salmonids exposed to chlorpyrifos and copper

Effects of pesticides on estuarine organisms : progress report : May 1, 1964 through May 31, 1966

Assessing the impact of microbial pesticides on nontarget insects : laboratory versus field tests

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