The manufacturing processes of royal demolition explosive (RDX), or hexahydro-1,3,5-trinitro-1,3,5-triazine, have resulted in
serious water contamination. As a potential carcinogen, RDX can cause a broad range of harmful effects to humans and
animals. The ovine rumen is capable of rapid degradation of nitroaromatic compounds, including RDX. While ruminal RDX-degrading
bacteria...
Full Text:
Rumen Microbiome
Li, R. W., Giarrizzo, J. G., Wu, S., Li, W., Duringer, J. M., et al. (2014
Invasions have increased the size of regional species pools, but are typically assumed to reduce native diversity.
However, global-scale tests of this assumption have been elusive because of the focus on exotic species richness,
rather than relative abundance. This is problematic because low invader richness can indicate invasion resistance by...
Full Text:
HAUT IER 1 , 7 , E R IC
L IND 1 , ANDREW MACDOUGALL 8 , JOHN L . ORROCK 9 , SUZANNE M . PROBER 1 0 , P
The Middle Fork of the John Day River (MFJD) in Northeastern Oregon contains important spawning grounds for spring Chinook and summer steelhead of the Columbia River Basin. In the summer of 2008 phase one of a river restoration project was completed which included the addition of engineered log jams (ELJs)...
Full Text:
0.08°C pre-restoration and 1.18°C post-restoration. This equates to
0.004 m
3
/s and 0.012 m
3
/s
Several uranium anomalies, with concentrations of U₃0₈ that
average below 0.003 percent and reach maximums of 0.069 percent,
are associated with black, fossiliferous, pyritic parts of the Ordovician
Ledbetter Slate in northern Stevens County, Washington. The most
uraniferous parts of the slate occur in small (average of 5 by 30...
Full Text:
less than 1 m) along
the contact between the Ledbetter Slate and Metaline Limestone from
within 30 m
The Middle Fork John Day Basin in Northeastern Oregon is prime habitat for spring Chinook salmon and Steelhead trout. In 2008, a major tributary supporting rearing habitat, Big Boulder Creek, was restored to its historic mid-valley channel along a 1 km stretch of stream 800 m upstream of the mouth....
Full Text:
its historic mid-valley channel along a 1
km stretch of stream 800 m upstream of the mouth. Reduction
Continuing education workshops and shortcourses are playing an increasingly important role in the education of forest resource professionals. The “tug-of-war” between breadth and depth in undergraduate curricula, combined with pressure to reduce the number of credit hours required for graduation, create knowledge gaps in various disciplines. Workshops and shortcourses help...
Full Text:
.
Acknowledgments
We thank Marlene Lockhart, Andrew Londo, Ted Leininger, and Leroy Shilling for
reviewing
Chronic nitrogen (N) fertilization can greatly affect soil carbon (C) sequestration by altering biochemical interactions between plant detritus and soil microbes. In lignin-rich forest soils, chronic N additions tend to increase soil C content partly by decreasing the activity of lignin-degrading enzymes. In cellulose-rich grassland soils it is not clear...
Full Text:
Sciences, Oregon State
University, Corvallis, OR 97331, USA
M. J. Crawley
Department of Life Sciences
Multiple lines of existing evidence suggest that climate change enhances root exudation of organic compounds into soils. Recent experimental studies show that increased exudate inputs may cause a net loss of soil carbon. This stimulation of microbial carbon mineralization ('priming') is commonly rationalized by the assumption that exudates provide a...
Full Text:
root exudates
Mineral protection of soil carbon counteracted by root exudates
Keiluweit, M