Summer Birds of the Alvord Basin, Oregon

The Murrelet ◽  
1978 ◽  
Vol 59 (2) ◽  
pp. 59
Author(s):  
Gregory A. Green
Keyword(s):  
Alvord Basin

Genetic structure and the history of chub in the Alvord Basin

2019 ◽  
Vol 20 (3) ◽  
pp. 489-501 ◽  
Author(s):  
Christian T. Smith ◽  
Jennifer Von Bargen ◽  
Patrick W. DeHaan ◽  
Paul Scheerer ◽  
Michael H. Meeuwig
Keyword(s):  
Genetic Structure ◽  
History Of ◽  
Alvord Basin

scholarly journals Biogenic Mineral Production by a Novel Arsenic-Metabolizing Thermophilic Bacterium from the Alvord Basin, Oregon

2007 ◽  
Vol 73 (18) ◽  
pp. 5928-5936 ◽  
Author(s):  
Rhesa N. Ledbetter ◽  
Stephanie A. Connon ◽  
Andrew L. Neal ◽  
Alice Dohnalkova ◽  
Timothy S. Magnuson
Keyword(s):  
Reductase Activity ◽  
Morphological Characteristics ◽  
Sulfide Mineral ◽  
Thermophilic Bacterium ◽  
Arsenate Reductase ◽  
Rrna Gene ◽  
Organic Substrates ◽  
Arsenic Sulfide ◽  
16S Rrna Gene Analysis ◽  
Alvord Basin

ABSTRACT The Alvord Basin in southeast Oregon contains a variety of hydrothermal features which have never been microbiologically characterized. A sampling of Murky Pot (61°C; pH 7.1) led to the isolation of a novel arsenic-metabolizing organism (YeAs) which produces an arsenic sulfide mineral known as β-realgar, a mineral that has not previously been observed as a product of bacterial arsenic metabolism. YeAs was grown on a freshwater medium and utilized a variety of organic substrates, particularly carbohydrates and organic acids. The temperature range for growth was 37 to 75°C (optimum, 55°C), and the pH range for growth was 6.0 to 8.0 (optimum, pH 7.0 to 7.5). No growth was observed when YeAs was grown under aerobic conditions. The doubling time when the organism was grown with yeast extract and As(V) was 0.71 h. Microscopic examination revealed Gram stain-indeterminate, non-spore-forming, nonmotile, rod-shaped cells, with dimensions ranging from 0.1 to 0.2 μm wide by 3 to 10 μm long. Arsenic sulfide mineralization of cell walls and extracellular arsenic sulfide particulate deposition were observed with electron microscopy and elemental analysis. 16S rRNA gene analysis placed YeAs in the family Clostridiaceae and indicated that the organism is most closely related to the Caloramator and Thermobrachium species. The G+C content was 35%. YeAs showed no detectable respiratory arsenate reductase but did display significant detoxification arsenate reductase activity. The phylogenetic, physiological, and morphological characteristics of YeAs demonstrate that it is an anaerobic, moderately thermophilic, arsenic-reducing bacterium. This organism and its associated metabolism could have major implications in the search for innovative methods for arsenic waste management and in the search for novel biogenic mineral signatures.

Intraspecific Variation In Habitat Use and Movement In Long-Nosed Leopard Lizards (Gambelia wislizenii) From the Alvord Basin, Oregon

2017 ◽  
Vol 62 (3) ◽  
pp. 187-192 ◽  
Author(s):  
Grace E. Garrison ◽  
João C. Zecchini Gebin ◽  
Jacob F. Penner ◽  
Faelan E. Jacobson ◽  
Maria A. Eifler ◽  
...  
Keyword(s):  
Habitat Use ◽  
Intraspecific Variation ◽  
Alvord Basin

scholarly journals Thermostable and Alkalistable Xylanases Produced by the Thermophilic Bacterium Anoxybacillus flavithermus TWXYL3

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Joshua T. Ellis ◽  
Timothy S. Magnuson
Keyword(s):  
Hydrothermal System ◽  
Xylanase Activity ◽  
Electrophoretic Analysis ◽  
Economic Incentive ◽  
Thermophilic Bacterium ◽  
Rrna Gene ◽  
Ph Optimum ◽  
Anoxybacillus Flavithermus ◽  
The 16S Rrna Gene ◽  
Alvord Basin

With the rising cost and finite supply of fossil energy, there is an increasing economic incentive for the development of clean, efficient, and renewable domestic energy. The activities of microorganisms offer the potential conversion of lignocellulosic materials into fermentable sugars, usable for downstream fermentation processes. Strain TWXYL3, a thermophilic facultative anaerobe, was discovered in the Alvord Basin hydrothermal system in Oregon, USA. Phylogenetic analysis of strain TWXYL3 showed it to be 99% similar to the 16S rRNA gene of Anoxybacillus flavithermus WL (FJ950739). A. flavithermus TWXYL3 was shown to secrete a large multisubunit thermostable xylanase complex into the growth medium. Xylanase induction was achieved by resuspending the isolate in a selective xylan-containing medium. Extracellular xylanase activity showed a temperature optimum of 65°C and retained thermostability up to 85°C. Extracellular xylanase activity showed a bimodal pH optimum, with maxima at pH 6 and pH 8. Electrophoretic analysis of the extracellular xylanase shows 5 distinct proteins with xylanase activity. Strain TWXYL3 is the first xylanolytic isolate obtained from the Alvord Basin hydrothermal system and represents a new model system for development of processes where lignocellulosics are converted to biofuel precursors.

Diversity of aerobic and facultative alkalitolerant and halotolerant endospore formers in soil from the Alvord Basin, Oregon

2009 ◽  
Vol 32 (4) ◽  
pp. 233-244 ◽  
Author(s):  
Stephanie A. Smith ◽  
James N. Benardini ◽  
Janice L. Strap ◽  
Ronald L. Crawford
Keyword(s):  
Alvord Basin
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