My research centers around using physiological mechanisms to explain ecological patterns of biodiversity across environmental gradients. Using this approach, I attempt to elucidate how organisms will respond to climate change. More specifically, for this postdoc, I will interrogate the utility of physiological indices that incorporate the effects of temperature and oxygen on invertebrate performance along North America's west coast (co-advised with Dr. Fio Micheli)
I'm interested in how uranium is incorporated into shales and carbonates and if this can help elucidate how uranium fractionation is recorded under anoxic and euxinic conditions in ancient oceans. (Co-advised with Jon Payne)
Una Farrell was Lab Research Coordinator in the Historical Geobiology Lab from 2015-2017. She continues to work remotely, directing data management for the Sedimentary Geochemistry and Paleoenvironments Project (SGP) from her new position at Trinity College Dublin. In her time at Stanford, Una built the relational database for SGP, which facilitates analysis of redox conditions and shifts in biogeochemical cycling through time in a robust statistical framework.
I am a new graduate student in 2020, and have previously worked in the lab on a project in collaboration with colleagues at the Stanford Hopkins Marine Station and Woods Institute using the metabolic index to understand how organisms will respond to future oxygen and temperature changes in the California Current system. I will likely work on past O2/temperature changes in the California Current ecosystem and their biotic impacts over the course of my Phd. I am generally interested in marine ecology and global change biology.
Post Doctoral Scholar
I’m primarily interested in the evolution of animal multicellularity within the broad context of biospheric evolution. I experiment on modern animals and their close unicellular relatives to help reconstruct the environmental and ecological conditions that accompanied the origin of animal life. Outside of animals, I am more generally interested in the other transitions to multicellularity throughout Earth history and across the tree of life, as well as the global environmental controls on these transitions.
Chris is an undergraduate working to quantify patterns of animal physiology in the modern ocean
My research focuses on elucidating the paleoredox geochemistry of organic-rich shales using iron and sulfur proxies, among others, as well as stable isotope analysis. I aim to investigate changes in depositional conditions both temporally as well as spatially (with respect to intra-basin location) and how those changes affect the viability of the shale as a source rock. My current research predominantly resides in the Paleozoic marine realm, but previous research has included lacustrine systems, which I still maintain an interest in.
I study fossil ecosystems in order to understand the links between environmental change and biodiversity crisis. Specifically, I focus on Paleozoic brachiopods and use a combination of morphometric analyses, stratigraphic interpretations, and multivariate statistics to understand why species evolved, prefered certain environments, and ultimately went extinct.
My research focuses on the evolution of complex ecosystems and their interaction with the biosphere through Earth history. Specifically, I integrate paleobiological techniques with multi-proxy sedimentary geochemistry to study the environmental dynamics of key ecological transitions in the early Paleozoic. I am further interested in incorporating data from ecological modelling, experimental physiology and field geology into a holistic statistical framework for understanding covariations in biotic and abiotic global change both sides of the Neoproterozoic-Paleozoic transition.
Tahoma's research interests include the ecology of squirrels and groundbirds, and methods development aimed at turning pieces of paper into other, smaller pieces of paper.
Short term and undergraduate visitors
Stanford undergraduate student (summer 2020)
Lyna worked on developing the SGP search website.
Visiting undergraduate student (Summer 2019)
Home institution: IIT Kharagpur
Project: Applying machine learning techniques to understand trends in Earth history and the Marcellus Shale
Project: Molecular paleobiology of the Brachiopoda: building a validated set of brachiopod molecular clock calibration points
Visiting undergraduate student (Summer 2018)
Home Institution: Vanderbilt University
Currently: Phd student, Northern Arizona University
Project: Paleoenvironmental change in the Lower Ordovician Road River Group, Yukon
SESUR student (Summer 2018)
Project: Testing Hypotheses of Early Paleozoic Redox Evolution in the Road River Group of Yukon
Visiting undergraduate student (Summer 2017)
Home Institution: Indiana University of Pennsylvania
Project: Sedimentary geochemistry of the Marcellus Shale, West Virginia
SURGE student (Summer 2017)
Home Institution: Smith College
Currently: Phd student, University of Chicago
Project: Sedimentary geochemistry of the early Triassic Montney Formation, British Columbia, and paleoenvironmental conditions following the end-Permian mass extinction
Visiting undergraduate student (Summer 2017)
Home Institution: Colorado College
Project: Sedimentary geochemistry of Devonian shale from the Liard Basin, Yukon, Canada: relationship to hydrocarbon production and late Devonian mass extinctions
Visiting undergraduate student (Summer 2017)
Home Institution: Peking University
Currently: Phd student, Virginia Tech
Project: Sedimentary geochemistry of the Cline and Wolfcamp Shale, Midland Basin, Texas
Visiting undergraduate student (Winter 2017)
Home Institution: Dartmouth College
Project: Sedimentary geochemistry of the Road River Group, Yukon
Paulo Linarde Dantas Mascena
Brazil Science Mobility Program student (Summer 2016)
Home Institution: Federal University of Rio Grande do Norte
Project: Iron speciation analyses of Paleozoic shale from the North Slope, Yukon and Alaska
SURGE Student (Summer 2016)
Home Institution: The University of Puerto Rico at Mayaguez
Currently: Phd student, University of Colorado, Boulder
Project: Environmental change in the Silurian and its effect on animal evolution
I am assisting with physiological measurements (Pcrit) of marine organisms (polychaetes and sea anemones) to better understand how changes in temperature and oxygen may have played a role in the early evolution of animals.
Currently: Masters student, Boston College
My senior undergraduate thesis project is a multi-proxy sedimentary geochemical study of the Middle-Upper Devonian Canol Formation, Yukon, Canada
Currently: Postdoctoral scholar, Yale University
My research focuses on the origins and early evolution of macroscopic animal life and the changes to both the geosphere and biosphere during the Neoproterozoic to Paleozoic transition; specifically the Ediacaran Period (635-541 Ma). Due to the paucity of fossil evidence left by Earth’s earliest animals in deep time, I look to incorporate paleo- ecological, geochemical, and database analyses with studies of extant animal physiology to better understand the Ediacaran biostratigraphic record.
Currently: Doctoral student, University of California, Davis.
I am a paleobiologist with a primary interest in early life and what environmental factors may have been involved in biotic shifts during the Neoproterozoic. I am working on analyzing carbon isotopes from the Road River Group, Yukon, and a redox geochemical study of the Sappington Formation, Montana.
Currently: Post-doctoral scholar, Uppsala University
I am a paleobiologist whose research interests primarily centre around determining the origins of, and relationships between, major groups of animals in the time interval colloquially dubbed the 'Cambrian Explosion'.
I am using the ‘metabolic index’ as a framework for mapping the future habitable range of red abalone (Haliotis rufescens) on high-resolution oxygen and temperature projections for the U.S. west coast. I am also investigating the role of body size in determining oxygen tolerance in abalone.
Currently: Postdoctoral scholar, University of Cambridge
I’m interested in the apparent environmental stability of the late Paleoproterozoic and Mesoproterozoic. Despite recording the growth and break-up of Nuna, the probable first appearance of eukaryotes, and the final major pulse of BIF deposition, this relatively poorly studied interval has been termed the “boring billion”. Through a combination of fieldwork and geochemistry, I plan to investigate how “boring” this time actually was.
Currently: Graduate student, University of Waterloo
My research is focused on testing a proposed early Ediacaran oxygenation event through a multi-proxy sedimentary geochemical study of the Sheepbed Formation, Northwest Territories and Yukon, Canada
I am building an intuitive, searchable website for the Sedimentary Geochemistry and Paleoenvironments Project (SGP) in preparation for the upcoming Phase 1 data freeze and group publications.
Currently: Graduate Student, Mao Lab, Stanford Geological Sciences
My research focused on Paleoproterozoic shale from Australia and assisting the SGP project.
Currently: Phd student, Yale University
I am coordinating data entry for the Sedimentary Geochemistry and Paleonvironments Project. If you are in SGP, look out for emails from me! I'll be helping get your data into the appropriate format to upload to our database. I am also working on a project applying meta-analysis techniques to understand global change during Oceanic Anoxic Event 2.