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Carbon and nitrogen isotopic composition of hot spring biofilms from Yellowstone National Park

Carbon and nitrogen isotopic composition of hot spring biofilms from Yellowstone National Park. Joseph Murray Mentor: Dr. Ariel Anbar. Astrobiology at Yellowstone National Park. Yellowstone abounds with diverse hydrothermal ecosystems

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Carbon and nitrogen isotopic composition of hot spring biofilms from Yellowstone National Park

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  1. Carbon and nitrogen isotopic composition of hot spring biofilms from Yellowstone National Park Joseph Murray Mentor: Dr. Ariel Anbar

  2. Astrobiology at Yellowstone National Park • Yellowstone abounds with diverse hydrothermal ecosystems • Provides an excellent opportunity to observe many unique organisms living in extreme habitats • Unique chance to search for variations in the elemental requirements for life • Biological Stoichiometry Jeff Havig, Ph.D. Candidate

  3. What is a bioflim? H2O 12C 14N 12C 15N Nutrients Isotope fractionation

  4. Bison Pool Source Flow Direction High Temperature Low Temperature 93º C 67º C 50º C “Photosynthetic Fringe”

  5. Carbon Cycling In Bison Pool: 2005-2006 This plot shows the D13C (fractionation from DIC) values for biofilms from ‘Bison Pool’ collected in 2005 and 2006. The lines and arrows are put in place only as estimates of averages and to help illustrate the assumed trend in fractionation. (J. Havig, in prep.)

  6. Carbon Cycling In Bison Pool: 2005-2007 2007 Biofilm (J. Havig, in prep.) This plot shows the D13C (fractionation from DIC) values for biofilms from ‘Bison Pool’ collected in 2005, 2006 and 2007. The lines and arrows are put in place only as estimates of averages and to help illustrate the assumed trend in fractionation.

  7. Carbon Cycling In Bison Pool: 2005-2007 TCA PEP 2007 Biofilm (J. Havig, in prep.) This plot shows the D13C (fractionation from DIC) values for biofilms from ‘Bison Pool’ collected in 2005, 2006 and 2007. The lines and arrows are put in place only as estimates of averages and to help illustrate the assumed trend in fractionation.

  8. Nitrogen Cycling In Bison Pool: 2006 2006 Biofilm (J. Havig, in prep.)

  9. Nitrogen Cycling In Bison Pool: 2006-2007 Year-to-year variability? 2006 Biofilm 2007 Biofilm (J. Havig, in prep.)

  10. Bison vs. Spent Kleenex Similar chemistry, similar isotopes Bison vs. Octopus Spring Similar chemistry, different isotopes (J. Havig, in prep.)

  11. Thank You • Jeff Havig • Dr. Ariel Anbar • Stephen Romaniello • Dr. Achim Herrmann • Natasha Zolotova • Dr. Everett Shock

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