Physical Sciences and Mathematics Commons^™

Environmental Controls On The Landscape-Scale Biogeography Of Stream Bacterial Communities, Noah Fierer, Jennifer L. Morse, Sean T. Berthrong, Emily S. Bernhardt, Robert B. Jackson

Environmental Science and Management Faculty Publications and Presentations

We determined the biogeographical distributions of stream bacteria and the biogeochemical factors that best explained heterogeneity for 23 locations within the Hubbard Brook watershed, a 3000-ha forested watershed in New Hampshire, USA. Our goal was to assess the factor, or set of factors, responsible for generating the biogeographical patterns exhibited by microorganisms at the landscape scale. We used DNA fingerprinting to characterize bacteria inhabiting fine benthic organic matter (FBOM) because of their important influence on stream nutrient dynamics. Across the watershed, streams of similar pH had similar FBOM bacterial communities. Streamwater pH was the single variable most strongly correlated with …

Interview With Anthony Boutard, Ayers Creek Farm, 2007 (Audio), Anthony Boutard

All Sustainability History Project Oral Histories

Interview of Anthony Boutard by Magda Gaytan at Ayers Creek Farm on August 10th, 2007.

The interview index is available for download.

Interview With Dan J. Wilson, Sudan Farms, 2007 (Audio), Dan J. Wilson

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Interview of Dan J. Wilson by Jason Keaton at Canby, Oregon on August 10th, 2007.

The interview index is available for download.

Interview With Trevor Baird, Baird Family Orchard, 2007 (Audio), Trevor Baird

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Interview of Trevor Baird by Adam Hopfe at Portland State University on August 7th, 2007.

The interview index is available for download.

Interview With Melissa & Rod Volbeda, Willamette Valley Cheese, 2007 (Audio), Melissa Volbeda, Rod Volbeda

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Interview of Melissa and Rod Volbeda by Magda Gaytan on August 6th, 2007.

Willamette Valley Cheese Company tour photos available for download.

Interview With Dianne Stefani-Ruff, Portland Farmers Market, 2007 (Audio), Dianne Stefani-Ruff

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Interview of Dianne Stefani-Ruff by Jennifer Bennett on July 31st, 2007.

The interview index is available for download.

Interview With Roger Allen Konka, Springwater Farm, 2007 (Audio), Roger Allen Konka

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Interview of Roger Allen Konka by Michael Schott on July 29th, 2007.

The interview index is available for download.

Interview With Lyle N. Stanley, Gee Creek Farm, 2007 (Audio), Lyle N. Stanley

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Interview of Lyle N. Stanley by Aaron Veal at Portland State University on July 28th, 2007.

The interview index is available for download.

Interview With Kathy & Matt Unger, Unger Farms, 2007 (Audio), Kathy Unger, Matt Unger

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Interview of Kathy and Matt Unger by Alix Lefler at Cornelius, Oregon on July 25th, 2007.

The interview index is available for download.

Green Crab Management: Reduction Of A Marine Invasive Population, Catherine E. De Rivera, Edwin D. Grosholz, Greg Ruiz, Amy A. Larson, Rebecca L. Kordas, Mark Sytsma

Environmental Science and Management Faculty Publications and Presentations

The overall goal of this study is to develop and demonstrate the capacity for local eradication of adult Carcinus maenas, European green crabs. This represents a conceptual shift in development of management options to address established invasions in marine systems, extending and exploring the application of terrestrial successes in this area. Specifically, this project tests the effects of removing green crabs from Bodega Harbor on the green crab population and on native shore crabs eaten by green crabs.

The Structure And Function Of Small Nucleolar Ribonucleoproteins, Steve Reichow, Tomoko Hamma, Adrian R. Ferré-D’Amaré, Gabriele Varani

Chemistry Faculty Publications and Presentations

Eukaryotes and archaea use two sets of specialized ribonucleoproteins (RNPs) to carry out sequencespecific methylation and pseudouridylation of RNA, the two most abundant types of modifications of cellular RNAs. In eukaryotes, these protein–RNA complexes localize to the nucleolus and are called small nucleolar RNPs (snoRNPs), while in archaea they are known as small RNPs (sRNP). The C/D class of sno(s)RNPs carries out ribose- 20-O-methylation, while the H/ACA class is responsible for pseudouridylation of their RNA targets. Here, we review the recent advances in the structure, assembly and function of the conserved C/D and H/ACA sno(s)RNPs. Structures of each of the …

Dna Multiplex Hybridization On Microarrays And Thermodynamic Stability In Solution: A Direct Comparison, Daniel J. Fish, M. Todd Horne, Greg P. Brewood, Jim P. Goodarzi, Saba Alemayehu, Ashwini Bhandiwad, Robert P. Searles, Albert S. Benight

Chemistry Faculty Publications and Presentations

Hybridization intensities of 30 distinct short duplex DNAs measured on spotted microarrays, were directly compared with thermodynamic stabilities measured in solution. DNA sequences were designed to promote formation of perfect match, or hybrid duplexes containing tandem mismatches. Thermodynamic parameters DeltaH degrees , DeltaS degrees and DeltaG degrees of melting transitions in solution were evaluated directly using differential scanning calorimetry. Quantitative comparison with results from 63 multiplex microarray hybridization experiments provided a linear relationship for perfect match and most mismatch duplexes. Examination of outliers suggests that both duplex length and relative position of tandem mismatches could be important factors contributing to …