Publications by authors named "Christopher R Webster"

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O
Oxygen isotopic evidence that Gale crater, Mars, was home to an Early Hesperian water reservoir that underwent significant evaporation.
Amy E Hofmann, P Douglas Archer, Amy C McAdam, Brad Sutter, Thomas F Bristow, Christopher R Webster

Proc Natl Acad Sci U S A· October 2025

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Highly enriched carbon and oxygen isotopes in carbonate-derived CO at Gale crater, Mars.
David G Burtt, Jennifer C Stern, Christopher R Webster, Amy E Hofmann, Heather B Franz

Proc Natl Acad Sci U S A· October 2024

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Organic carbon concentrations in 3.5-billion-year-old lacustrine mudstones of Mars.
Jennifer C Stern, Charles A Malespin, Jennifer L Eigenbrode, Christopher R Webster, Greg Flesch

Proc Natl Acad Sci U S A· July 2022

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Depleted carbon isotope compositions observed at Gale crater, Mars.
Christopher H House, Gregory M Wong, Christopher R Webster, Gregory J Flesch, Heather B Franz

Proc Natl Acad Sci U S A· January 2022

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Herriott cell spot imaging increases the performance of tunable laser spectrometers.
Christopher R Webster, Gregory J Flesch, Ryan M Briggs, Mathieu Fradet, Lance E Christensen

Appl Opt· March 2021

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Does persistent snowpack inhibit degradation of fecal stress indicators?
Grace L Parikh, Christopher R Webster, John A Vucetich, John J Durocher, Joseph K Bump

Conserv Physiol· December 2018

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Methane on Mars and Habitability: Challenges and Responses.
Yuk L Yung, Pin Chen, Kenneth Nealson, Sushil Atreya, Patrick Beckett, Christopher R Webster

Astrobiology· October 2018

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Background levels of methane in Mars' atmosphere show strong seasonal variations.
Christopher R Webster, Paul R Mahaffy, Sushil K Atreya, John E Moores, Gregory J Flesch

Science· June 2018

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Influence of plant community composition on biomass production in planted grasslands.
Max A Henschell, Christopher R Webster, David J Flaspohler, Chad R Fortin

PLoS One· May 2016

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Spatial patterning and floral synchrony among trillium populations with contrasting histories of herbivory.
Christopher R Webster, Michael A Jenkins, Aaron J Poznanovic

PeerJ· March 2015

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Sharing rotting wood in the shade: ectomycorrhizal communities of co-occurring birch and hemlock seedlings.
Sarah K Poznanovic, Erik A Lilleskov, Christopher R Webster

Mycorrhiza· February 2015

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Mars atmosphere. Mars methane detection and variability at Gale crater.
Christopher R Webster, Paul R Mahaffy, Sushil K Atreya, Gregory J Flesch, Michael A Mischna

Science· January 2015

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Primordial argon isotope fractionation in the atmosphere of Mars measured by the SAM instrument on and implications for atmospheric loss.
Sushil K Atreya, Melissa G Trainer, Heather B Franz, Michael H Wong, Heidi L K Manning, Christopher R Webster

Geophys Res Lett· November 2013

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Low upper limit to methane abundance on Mars.
Christopher R Webster, Paul R Mahaffy, Sushil K Atreya, Gregory J Flesch, Kenneth A Farley

Science· October 2013

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Abundance and isotopic composition of gases in the martian atmosphere from the Curiosity rover.
Paul R Mahaffy, Christopher R Webster, Sushil K Atreya, Heather Franz, Michael Wong

Science· July 2013

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Broadening the ecological context of ungulate-ecosystem interactions: the importance of space, seasonality, and nitrogen.
Bryan D Murray, Christopher R Webster, Joseph K Bump

Ecology· June 2013

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Post-disturbance plant community dynamics following a rare natural-origin fire in a Tsuga canadensis forest.
Bryan D Murray, Stacie A Holmes, Christopher R Webster, Jill C Witt

PLoS One· January 2013

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Wood {delta}13C, {delta}18O and radial growth responses of residual red pine to variable retention harvesting.
Matthew D Powers, Kurt S Pregitzer, Brian J Palik, Christopher R Webster

Tree Physiol· March 2010

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Drought-herbivory interaction disrupts competitive displacement of native plants by Microstegium vimineum, 10-year results.
Christopher R Webster, Janet H Rock, Robert E Froese, Michael A Jenkins

Oecologia· September 2008

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Measurement of sulfur isotope compositions by tunable laser spectroscopy of SO2.
Lance E Christensen, Benjamin Brunner, Kasey N Truong, Randall E Mielke, Christopher R Webster

Anal Chem· December 2007

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Multilaser Herriott cell for planetary tunable laser spectrometers.
Christopher G Tarsitano, Christopher R Webster

Appl Opt· October 2007

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Aircraft and balloon in situ measurements of methane and hydrochloric acid using interband cascade lasers.
Lance E Christensen, Christopher R Webster, Rui Q Yang

Appl Opt· March 2007

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Measuring methane and its isotopes 12CH4, 13CH4, and CH3D on the surface of Mars with in situ laser spectroscopy.
Christopher R Webster

Appl Opt· March 2005

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Mars laser hygrometer.
Christopher R Webster, Gregory J Flesch, Kamjou Mansour, Robert Haberle, Jill Bauman

Appl Opt· August 2004

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Water isotope ratios D/H, 18O/16O, 17O/16O in and out of clouds map dehydration pathways.
Christopher R Webster, Andrew J Heymsfield

Science· December 2003

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