Climate and terrestrial vegetation have had mutual feedbacks for nearly five hundred million years, yet both are now departing from recent historical norms, with uncertain implications for forest ecosystems. This dissertation outlines the current and potential future climate responses of lichen and bryophyte communities in the United States as part...
Climate and terrestrial vegetation have had mutual feedbacks for nearly five hundred million years, yet both are now departing from recent historical norms, with uncertain implications for forest ecosystems. This dissertation outlines the current and potential future climate responses of lichen and bryophyte communities in the United States as part...
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Robert J. Smith for the degree of Doctor of Philosophy in Botany and Plant Pathology
presented on May 1
Air was sampled from the porous firn layer at the NEEM site in Northern Greenland. We use an ensemble of ten reference tracers of known atmospheric history to characterise the transport properties of the site. By analysing uncertainties in both data and the reference gas atmospheric histories, we can objectively...
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. Laube8, W. T. Sturges8, V. A. Levchenko9,
A. M. Smith9, I. Levin10, T. J. Conway11, E. J. Dlugokencky11
Air was sampled from the porous firn layer at the NEEM site in Northern Greenland. We use an ensemble of ten reference tracers of known atmospheric history to characterise the transport properties of the site. By analysing uncertainties in both data and the reference gas atmospheric histories, we can objectively...
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. Steele5, C. Hogan8, J. C. Laube8, W. T. Sturges8, V. A. Levchenko9,
A. M. Smith9, I. Levin10, T. J
Terrestrial lichen biomass is an important indicator of forage availability for caribou in northern regions, and can indicate
vegetation shifts due to climate change, air pollution or changes in vascular plant community structure. Techniques for
estimating lichen biomass have traditionally required destructive harvesting that is painstaking and impractical, so we...
Terrestrial lichen biomass is an important indicator of forage availability for caribou in northern regions, and can indicate
vegetation shifts due to climate change, air pollution or changes in vascular plant community structure. Techniques for
estimating lichen biomass have traditionally required destructive harvesting that is painstaking and impractical, so we...
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Error in Distributed Temperature Sensor (DTS) water temperature measurements may
be introduced by contact of the fiber optic cable sensor with bed materials (e.g.,
seafloor, lakebed, stream bed). Heat conduction from the bed materials can affect cable
temperature and the resulting DTS measurements. In the Middle Fork John Day River,...
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conduction impact on fiber optic DTS water temper-
ature measurements
T. O’Donnell Meininger and J. S
Error in Distributed Temperature Sensor (DTS) water temperature measurements may
be introduced by contact of the fiber optic cable sensor with bed materials (e.g.,
seafloor, lakebed, stream bed). Heat conduction from the bed materials can affect cable
temperature and the resulting DTS measurements. In the Middle Fork John Day River,...
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measurements
O'Donnell Meininger, T., & Selker, J. S. (2014). Technical Note: Bed conduction
impact on fiber
Nitrogen is one of the major nutrients limiting microbial productivity in the ocean, and as a result, most marine microorganisms
have evolved systems for responding to nitrogen stress. The highly abundant alphaproteobacterium “Candidatus
Pelagibacter ubique,” a cultured member of the order Pelagibacterales (SAR11), lacks the canonical GlnB, GlnD, GlnK, and...
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Richard D. Smith,b
Stephen J. Giovannonia
Department of Microbiology, Oregon State University, Corvallis
Nitrogen is one of the major nutrients limiting microbial productivity in the ocean, and as a result, most marine microorganisms
have evolved systems for responding to nitrogen stress. The highly abundant alphaproteobacterium “Candidatus
Pelagibacter ubique,” a cultured member of the order Pelagibacterales (SAR11), lacks the canonical GlnB, GlnD, GlnK, and...