PP019
Organic Compounds as Environmental Proxies: Development, Calibrations and Applications

Session ID#: 159867

Session Description:
Organic compounds are well-suited independent proxies for reconstructing a variety of environmental processes in the modern and (geological) past. This includes the distribution and stable isotopic composition of n-alkanes, fatty acids, alkenones, sterols, hopanoids, HBIs, HGs, GDGTs, and others. Given a complex relationship between these organic compounds and environmental conditions, it is crucial to understand the mechanisms that influence their molecular composition and distributions in depositional environments including source organisms, transport, post-deposition processes, and diagenesis. Diverse statistical methods and calibration datasets provide the benchmark for reliable reconstructions of past environmental parameters.

We seek studies that develop and apply these methods in the modern and in the geological past to reconstruct environmental parameters such as temperature, precipitation, carbon cycles, anthropogenic change, and vegetation. These can be studies on the biosynthesis and phylogeny of source organisms, transport and diagenesis, calibrations to environmental parameters, proxy interpretation and applications to reconstruct past environmental conditions.

Index Terms:

0429 Climate dynamics [BIOGEOSCIENCES]
0454 Isotopic composition and chemistry [BIOGEOSCIENCES]
0473 Paleoclimatology and paleoceanography [BIOGEOSCIENCES]

Primary Convener:  Ioana Stefanescu, University of Wyoming, Geology and Geophysics, Laramie, WY, United States
Conveners:  Meredith Parish, Brown University, Department of Earth, Environmental, and Planetary Sciences, Providence, United States and Pablo Martínez-Sosa, University of Arizona, Tucson, AZ, United States
Student/Early Career Convener:  Megan C Corcoran, University of Cincinnati, Cincinnati, United States
 
A 1,800-year Air Temperature Record from the Tropical Andean Highlands based on Branched GDGTs from Lake Chacacocha, Peru (1056064)
Jarunetr (Nadia) Sae-Lim1, Bronwen L Konecky1, Isla S. Castañeda2, Neil Michelutti3, Jack Hutchings1, Jeffrey Salacup2, Christopher Grooms3, Mathias F Vuille4 and John P. Smol5, (1)Washington University in St Louis, Department of Earth and Planetary Sciences, St. Louis, MO, United States, (2)University of Massachusetts Amherst, Geosciences, Amherst, MA, United States, (3)Queen's University, Biology, Kingston, ON, Canada, (4)University at Albany, State University of New York, Department of Atmospheric and Environmental Sciences, Albany, NY, United States, (5)Queen's University, Kingston, ON, Canada
 
Compound-Specific Isotopes Record Incorporation of Methane-Derived H into Aquatic Plant Waxes in Arctic Lakes during the Middle Holocene (Invited) (1060999)
Jamie McFarlin1, Yarrow Axford2, Stephanie Kusch3, Andrew L Masterson2, G Everett Lasher2 and Magdalena R Osburn2, (1)University of Wyoming, Geology and Geophysics, Laramie, United States, (2)Northwestern University, Earth and Planetary Sciences, Evanston, IL, United States, (3)University of Cologne, Cologne, Germany
 
Observed seasonal trends in diatom-derived highly branched isoprenoids (HBIs) concentrations and hydrogen isotopes (1063182)
Megan C Corcoran1, Aaron F Diefendorf1, Thomas V Lowell1, Watts Dietrich1, Nicholas Wiesenberg2, Gregory C Wiles2, Mark A Wilson2 and Justine Paul Berina2, (1)University of Cincinnati, Cincinnati, United States, (2)The College of Wooster, Wooster, United States
 
3-Hydroxy Fatty Acid-Based Palaeothermometry in Lacustrine Environments (1071834)
Alice Hardman1, Amy Thorpe1,2, Kweku Afrifa Yamoah3, Daniel Read4 and James A Bendle1, (1)University of Birmingham, Birmingham, United Kingdom, (2)Center for Ecology and Hydrology Wallingford, Wallingford, United Kingdom, (3)University of York, York, United Kingdom, (4)UK Centre for Ecology and Hydrology (UKCEH), Wallingford, United Kingdom
 
Archaeal Lipids Suggest Ecological Shifts of Marine Ammonia-Oxidizing Archaea in Greenhouse Worlds (1090803)
Ronnakrit Rattanasriampaipong, Texas A&M University College Station, Department of Oceanography, College Station, TX, United States, Yige Zhang, Yale University, Department of Geology and Geophysics, New Haven, CT, United States, Ann Pearson, Harvard University, Earth and Planetary Sciences, Cambridge, MA, United States, Brian P Hedlund, University of Nevada Las Vegas, Las Vegas, NV, United States and Shuang Zhang, Texas A&M University, Department of Oceanography, College Station, United States
 
Plant-wax Evidence for a Middle Miocene C3 Grass-rich Ecosystem in NW Africa (1098753)
Anna Schartman, University of California Santa Cruz, Ocean Sciences, Santa Cruz, United States, Pratigya J Polissar, University of California Santa Cruz, Ocean Sciences, Santa Cruz, CA, United States and Carina Hoorn, University of Amsterdam, IBED, Amsterdam, Netherlands
 
Volcanism-driven Changes on the Recalcitrant Biomolecular Distribution Pattern within Trappean Sedimentary Organic Matter and its Implications (1103490)
Sohom Roy, Indian Institiute of Science Education and Research, Bhopal, India, Prasanta Sanyal, Indian Institute of Science Education and Research Kolkata, Department of Earth Sciences, Mohanpur, India and Bibhasvata Dasgupta, Indian Institute of Science Education and Research Kolkata, Earth Sciences, Kolkata, India
 
Leaf wax n-alkane composition of modern plants from Western Ghats, Southern India, and their chemotaxonomic significance (1105593)
Sarath Pullyottum Kavil, Indian Istitute of Science (IISc), Centre for Ecological Science, Bangalore, India, Prabhakaran Ramya Bala, Indian Institute of Science, Bangalore, India; National Institute of Advanced Studies, School of Natural Sciences, Bengaluru, India, Devanita Ghosh, TU Delft, Delft, Netherlands, Raman Sukumar, Centre for ecological sciences, Indian institute of science, Bangalore, India, Hebbalalu S Suresh, Centre for Ecological Sciences, Indian Institute of Science in India, Bangalore, India, Ankit Yadav, Indian Institute of Science Education and Research (IISER), Mohali, Mohali, India and Anoop Ambili, Indian Institute of Science Education and Research, Mohali, Mohali, India
 
Carbon Isotopic Composition of Leaf Wax n-Alkanes Under Elevated CO2 (1107379)
Bridget Warren, University of Birmingham, Birmingham, B15, United Kingdom, James A Bendle, University of Birmingham, School of Geography, Earth and Environmental Sciences, Birmingham, B15, United Kingdom, Kweku Afrifa Yamoah, University of Birmingham, School of Geography, Earth and Environmental Sciences, Birmingham, United Kingdom and Yvette Eley, The University of Birmingham, School of Geography Earth and Environmental Sciences, Birmingham, United Kingdom
 
Temperature, Precipitation, Vegetation, and Human Controls on brGDGTs in soils from a semi-arid altitudinal transect from the Republic of Armenia (1108216)
Amy Cromartie1,2, Guillemette Menot3, Mary Robles2,4, Lucas Dugerdil2,3, Salomé Ansanay-Alex3, Odile Peyron2 and Sébastien Joannin2, (1)Cornell University, Department of Anthropology, Ithaca, NY, United States, (2)University of Montpellier, Institut des Sciences de l'Evolution de Montpellier (ISEM), Montpellier, France, (3)Ecole Normale Supérieure Lyon, Laboratoire de géologie de Lyon : Terre, planètes, environnement (LGL-TPE), Lyon, France, (4)University of Molise, Campobasso, Italy
 
Carbon Isotope Fractionation in the 3HP/4HB Pathway and Prospects for an Archaeal Lipid pCO2 Paleobarometer (1115871)
Ann Pearson1, Samuel R Phelps2, Yuki Weber1,3, Amanda N Calhoun3, Vinitra Nathan3,4, Shelley E. Hoeft McCann4, Felix J Elling1,5, Sarah Hurley6 and William Leavitt7, (1)Harvard University, Earth and Planetary Sciences, Cambridge, MA, United States, (2)Harvard University, Earth and Planetary Sciences, Cambridge, United States, (3)Dartmouth College, Hanover, United States, (4)Harvard University, Cambridge, United States, (5)University of Kiel, Kiel, Germany, (6)Lamont-Doherty Earth Observatory of Columbia University, Palisades, United States, (7)Washington University in St Louis, Earth & Planetary Sciences, St. Louis, United States
 
Climatic and environmentally driven variability in lacustrine brGDGT distributions at local to regional scales in Alaska and northwestern Canada (1118914)
Gerard Otiniano, University of Toronto, Toronto, ON, Canada, Trevor John Porter, University of Toronto Mississauga, Department of Geography, Mississauga, ON, Canada, Rhys Buceta, University of Toronto, Geography, Toronto, Canada, Matthew E Bergman, University of Toronto, Cell and Systems Biology, Toronto, Canada and Michael A Phillips, University of Toronto - Mississauga, Cell and Systems Biology, Mississauga, ON, Canada
 
Comparing the Efficiency of Automatic and Manual Extraction Methods for Measuring TEX86 in Antarctic and Gulf of Mexico Continental Shelf Sediments. (1119234)
Delaney Sellers1, Carlos Hernandez-Gonzalez1, Imogen Mireille Browne2, Ethan Goddard3, Theresa Evans-Nguyen1 and Amelia Shevenell4, (1)University of South Florida, Department of Chemistry, Tampa, United States, (2)University of South Florida, College of Marine Science, St. Petersburg, FL, United States, (3)University of South Florida, Tampa, FL, United States, (4)University of South Florida, College of Marine Science, Tampa, FL, United States
 
Grass in the Past: Eastern African Chemotaxonomy from Plant Wax n-Alkanes (1122532)
Ruth Tweedy, Lamont Doherty Earth Observatory, New York, NY, UNITED STATES and Kevin T Uno, Lamont-Doherty Earth Observatory, Biology and Paleo Environment, Palisades, United States
 
Environmental Influences on the Hydrogen Isotope Signature in Aquatic Plants (1123526)
Bernhard Aichner1, S. Nemiah Ladd2, Tobias Goldhammer3, Daniel B Nelson4, Sven Dahlke5 and Sabine Hilt1, (1)Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), (Dept. 2) Community and Ecosystem Ecology, Berlin, Germany, (2)University of Basel, Dept. of Environmental Sciences, Basel, Switzerland, (3)Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), (Dept. 1) Ecohydrology and Biogeochemistry, Berlin, Germany, (4)University of Basel, Department of Environmental Sciences - Botany, Basel, Switzerland, (5)University of Greifswald, Biological Station Hiddensee, Kloster, Germany
 
Climate and Environmental Sensitivity of brGDGTs from Boreal Soils in Northwestern North America (1126793)
Rhys Buceta1, Trevor John Porter2, Gerard Otiniano2, Matthew E Bergman3 and Michael A Phillips4, (1)University of Toronto, Geography, Toronto, Canada, (2)University of Toronto Mississauga, Department of Geography, Mississauga, ON, Canada, (3)University of Toronto, Cell and Systems Biology, Toronto, Canada, (4)University of Toronto - Mississauga, Cell and Systems Biology, Mississauga, ON, Canada
 
Compound Specific Carbon Isotope Analysis of the Lower Kellwasser Event in the Appalachian Basin (1134399)
Tyler Logie1, Christopher K Junium2, Benjamin Thornton Uveges2, Tripti Bhattacharya3 and Phoebe Cohen4, (1)Syracuse University, Syracuse, NY, United States, (2)Syracuse University, Earth Sciences, Syracuse, NY, United States, (3)Syracuse University, Department of Earth and Environmental Sciences, Syracuse, United States, (4)Williams College, Williamstown, MA, United States
 
Detangling Mixed Organic Sources in Sedimentary Systems Using Biomarker Proxies: A Pliocene-Pleistocene Paleotemperature Record from the Tropical Andes. (Invited) (1137595)
Lina C Pérez-Angel1, Julio Sepulveda2, Peter H Molnar3, Katelyn Eaman4, Héctor Mora-Páez5, Angelica Parrado6, Hanaa Baniowda7, Catalina Gonzalez-Arango8, Kathryn E Snell9, Camilo Montes10 and Nadia Dildar1, (1)University of Colorado at Boulder, Department of Geological Sciences and the Institute of Arctic and Alpine Research, Boulder, CO, United States, (2)University of Colorado, Geological Sciences and INSTAAR, Boulder, CO, United States, (3)University of Colorado Boulder, Department of Geological Sciences, Boulder, United States, (4)University of Colorado at Boulder, INSTAAR, Boulder, United States, (5)Servicio Geológico Colombiano (SGC), Investigaciones Geodésicas Espaciales, Bogotá, Colombia, (6)Servicio Geológico Colombiano, Bogota, Colombia, (7)INSTAAR, Boulder, United States, (8)Universidad de Los Andes, Department of Biological Sciences, Bogota, Colombia, (9)University of Colorado Boulder, Department of Geological Sciences, Boulder, CO, United States, (10)Universidad de los Andes, Bogotá, Colombia
 
Investigating the Effect of Soil Chemistry and Climate on GDGT Climate Proxies (MBT'5ME, TEX86), Using 6 Globally distributed Altitudinal Gradients. (1151795)
Cindy De Jonge, ETH Swiss Federal Institute of Technology Zurich, Earth Sciences, Zurich, Switzerland, Jingjing Guo, Utrecht University, Utrecht, Netherlands, Petter Hallberg, Stockholm University, Stockholm, Sweden, Rienk Smittenberg, Stockholm University, Geological Sciences, Stockholm, Sweden, Marco Griepentrog, ETH Swiss Federal Institute of Technology Zurich, Zurich, Switzerland, Hamdi Rifai, Universitas Negeri Padang, Department of Physics, Faculty of Mathematics and Natural Sciences, Padang, Indonesia, Francien Peterse, Utrecht University, Department of Earth Sciences, Utrecht, Netherlands, Pascal F M Boeckx, Ghent University, Ghent, Belgium and Gerd Dercon, IAEA International Atomic Energy Agency, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Vienna, Austria
 
Controls on PAH production in modern East African soils using satellite data (1166682)
Troy M Ferland, Lamont -Doherty Earth Observatory, Palisades, United States and Kevin T Uno, Lamont-Doherty Earth Observatory, Biology and Paleo Environment, Palisades, United States
 
A Geographical Calibration Curve Construction Method with Applications to Alkenone and TEX86 Proxies (1169056)
Taehee Lee, Harvard University, Department of Statistics, Cambridge, MA, United States, Jun S Liu, Harvard University, Department of Statistics, Cambridge, United States and Charles Lawrence, Brown University, Division of Applied Mathematics, Providence, RI, United States
 
Preliminary Assessment of Biomarkers in Sediments from the Transkei Basin (IODP Site U1581) (1175134)
Kelsey E. Doiron, Indiana University Bloomington, Earth and Atmospheric Sciences, Bloomington, IN, United States, Thomas Wagner, Heriot-Watt University, Edinburgh, United Kingdom, Peter Bijl, Utrecht University, Earth Sciences, Utrecht, Netherlands, Jens O. Herrle, Goethe University Frankfurt, Frankfurt Am Main, Germany, Simon C Brassell, Indiana University, Earth & Atmospheric Sciences, Bloomington, IN, United States and IODP Expedition 392 Science Party
 
Estimating precipitation δ2H from sedimentary n-alkanes by leveraging abundance and isotope data from multiple chains (1178550)
Deming Yang, University of Utah, Geology and Geophysics, Salt Lake City, UT, United States and Gabriel J Bowen, University of Utah, Salt Lake City, UT, United States
 
Intramolecular 13C/12C Measurements of Decane and Phytane via GC-Orbitrap-MS with Peak Trapping (1181765)
Paul Volante, Youki J Sato, Hao Xie, Allison A Baczynski, Heike Betz and Katherine H Freeman, Pennsylvania State University Main Campus, University Park, United States
 
New Microbial Sources of 2- and 3-Methylhopanoids in Modern Anoxic, Acidic Hydrothermal Springs (1183689)
Marisa Mayer1, Mary N. Parenteau2, Thomas W. Evans3, Linda L Jahnke4, Roger E Summons3, Michael Thomas Madigan5, Gordon D Love6 and Paula V Welander7, (1)NASA Ames Research Center, Moffett Field, CA, United States, (2)NASA Ames Research Center, Moffett Field, United States, (3)Massachusetts Institute of Technology, Cambridge, MA, United States, (4)NASA Ames, Moffett Field, CA, United States, (5)Southern Illinois University Carbondale, Microbiology, Carbondale, IL, United States, (6)UC Riverside, Riverside, CA, United States, (7)Stanford University, Earth System Science, Stanford, CA, United States
 
Does the H isotopic composition of brGDGTs reflect growth water? Estimating H isotope fractionation during brGDGT lipid synthesis usng 2H-labelled water in cultured growth experiments with Solibacter usitatus (1193690)
Jamie McFarlin, University of Wyoming, Geology and Geophysics, Laramie, United States, Adam Younkin, University of Colorado at Boulder, Geological Sciences, Boulder, United States and Sebastian Kopf, University of Colorado at Boulder, Geological Sciences, Boulder, CO, United States
 
Revisiting Global Temperature Calibrations for Lacustrine Branched GDGTs (1198511)
Boyang Zhao1, James M Russell1, Victor C Tsai2, Meredith Parish1, Ansis Blaus3 and Mark B Bush3, (1)Brown University, Department of Earth, Environmental, and Planetary Sciences, Providence, United States, (2)Brown University, Department of Earth, Environmental, and Planetary Sciences, Providence, RI, United States, (3)Florida Institute of Technology, Institute for Global Ecology, Melbourne, United States
 
Partial or no replacement of Leaf wax n-alkanes in Mature leaves of Tropical angiosperms during the Growing season (1200081)
Amrita Saishree, Indian Institute of Science Education and Research Pune, Pune, India, Vijayananda Sarangi, Indian Institute of Science Education and Research Kolkata, Department of Earth Sciences, Kolkata, India; Swedish University of Agricultural Sciences, Uppsala, Sweden and Shreyas R Managave, Indian Institute of Science Education and Research, Earth and Climate Sciences, Pune, India
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