Networked Speaker Series

The Center for Dark Energy Biosphere Investigations (C-DEBI) is a “networked” Science and Technology Center (STC), gathering expertise, ideas, and participation from institutions across the U. S. and around the world. C-DEBI is particularly interested in opening and developing communication between participants separated by thousands of miles. C-DEBI participants gather in person at meetings periodically, but we can also link STC members using modern web tools. C-DEBI is continuing the Networked Speaker Series (begun in Fall 2011) as a means to enhance communication and the exchange of ideas among our community.

Current Speaker Series

2020-2021 Networked Speaker Series

September 10, 2020, 12:30pm PT, Dr. Rose Jones, University of Minnesota
Menu for a deep microbe: attempts in understanding microbe-mineral interactions in the deep marine seafloor
November 5, 2020, 12:30pm PT, Dr. Julia McGonigle, Bigelow Laboratory for Ocean Sciences
Formate metabolism by Chloroflexi is key in unlocking deep carbon for the Lost City chimney ecosystem
January 14, 2021, 12:30pm PT,  Dr. Jesse Colangelo-Lillis, University of Colorado Boulder
Title TBD
March 18, 2021, 12:30pm PT, Megan Mullis, Texas A&M Corpus Christi
Title TBD

Previous Speakers

2019 Networked Speaker Series

May 30, 2019, 12:30pm PT, Dr. Jeanine Ash, Rice University
Making and Breaking Molecules
September 5, 2019, 12:30pm PT, Taylor Royalty, University of Tennessee
Quantitatively partitioning microbial genomic traits among taxonomic ranks: implications for subsurface microbial communities
October 3, 2019, 12:30pm PT,  Dr. Jessica Labonté, Texas A&M Galveston
You are what you eat: a geochemical and microbial study of a 3000-year old stratigraphic sediment succession
November 7, 2019, 12:30pm PT, Dr. James Bradley, Queen Mary University of London
The power of microbial life in marine sediments

2018 Networked Speaker Series

May 31, 2018, 12:30pm PT, Dr. Alma Parada, Stanford University
Evaluating the diversity and distribution of novel microbes across physical and geochemical gradients in deep-sea sediments
September 20, 2018, 12:30pm PT, Dr. Nagissa Mahmoudi, McGill University
Uncovering microbial species-specific effects on organic matter transformation in marine sediments
September 27, 2018, 12:30pm PT,  Dr. Jackie Goordial, Bigelow Laboratory for Ocean Sciences
Microbial activity and ecology through sorted cell -omics of Mid-Atlantic ridge oceanic crust and sediments
October 18, 2018, 12:30pm PT, Dr. Rosa León Zayas, Willamette University
Description of the microbial community composition and metabolic potential of a depth profile in the Tonga Trench from 400m in the water column to 2m below the seafloor

2017 Networked Speaker Series

March 9, 2017 Dr. Annie Rowe, University of Southern California
Eating rocks! Investigating microbial energy conservation with microbes that utilize solid mineral electron donors
May 11, 2017 Dr. Drew Steen, University of Tennessee Knoxville
What Heterotrophs Want: Using extracellular enzyme assays to probe the lifestyle of heterotrophic microorganisms in subsurface sediments
September 7, 2017 Dr. Gus Ramirez, University of Rhode Island
Microbial Neter-Khertet: Life and death post-entombment
November 2, 2017 Dr. Emily Estes, University of Delaware
Organic carbon utilization and preservation in a carbon desert

2015-2016 Networked Speaker Series

KTwing_photo March 31, 2016 Dr. Katrina Twing, University of Utah
Microbial diversity and metabolic potential of the serpentinite subsurface environment
Nigro_2 April 28, 2016 Dr. Olivia Nigro, University of Hawaii
Viruses in the oceanic basement: An integral component of microbial life
 Carr_headshot May 26, 2016 Dr. Stephanie Carr, Bigelow Laboratory for Ocean Sciences
Methanosaeta, are you my methanogen?

2013-2014 Networked Speaker Series

lever May 21, 2014 Luke McKay, University of North Carolina, Chapel Hill
Approaching the high temperature boundary for life in the hydrothermally altered sediments of Guaymas Basin
Jason Sylvan June 18, 2014 Dr. Jason Sylvan, University of Southern California
Microbial life in old subseafloor basaltic crust
Julie Meyer August 13, 2014 Dr. Julie Meyer, University of Florida
Microbial life in cold, hydrologically active oceanic crustal fluids at North Pond

2012-2013 Networked Speaker Series

lever April 4, 2013 Dr. Mark Lever, Aarhus University
Evidence of Microbial Carbon and Sulfur Cycling in Buried Ridge Flank Basalt and General Implications for Life within Earth’s Oceanic Crust
Tim Engelhardt May 30, 2013 Tim Engelhardt, University of Oldenburg
Viruses in Marine Subsurface Sediments
Karen Lloyd July 25, 2013 Dr. Karen Lloyd, University of Tennessee, Knoxville
Opening the Black Box of Carbon Degradation Pathways in Marine Sediments through Single Cell Genomics and Metagenomics

2011-2012 Networked Speaker Series

reese November 10, 2011 Dr. Brandi Kiel Reese, University of Southern California
Biogeography of Geochemical Characterizations and Molecular Communities within Shallow and Deep Subsurface Sediments
orcutt March 8, 2012 Dr. Beth Orcutt, Aarhus University
The Dynamics of Life Across the Sediment-Basement Interface
anderson June 15, 2012 Rika Anderson, University of Washington
Viral Manipulation of the Genetic Landscape of Deep Subsurface Microbial Communities

Call for Nominations

Speaker nominations for the 2020 series are now closed.

Check out the Ocean Discovery Lecture Series which brings the scientific explorations and discoveries of the International Ocean Discovery Program to academic research institutions, museums, and aquaria.  Nominate a deep biosphere speaker or apply to host one at your institution.

PDF version of the nomination request

C-DEBI seeks nominations for three speakers for the 2020 program year. Potential speakers can be nominated by colleagues, mentors, or those mentored by C-DEBI participants; they may also self nominate. Selected C-DEBI Networked Speakers will make a presentation online, using video conferencing tools, with assistance from the C-DEBI main office at USC. Presentations are to be about 30 minutes in length, with time allocated for questions and discussion.

We would like to have three presentations during the 2020 academic year, ideally one in the spring, one in early summer, and one in the fall. No travel will be required either to make a presentation or to listen/participate in a presentation. Presentations will be recorded for later online playback by participants or those who could not “attend” the live web event.

Nominated C-DEBI Networked Speakers should be capable of combining compelling visual materials with the ability to communicate effectively to a broad audience. We are particularly enthusiastic about giving young researchers a chance to present work to the C-DEBI community. Being selected to be a C-DEBI Networked Speaker is an honor. Once speakers are selected, presentation dates and times for presentations will be determined and announced, along with instructions for connecting over the web.

Please forward nominations comprising a single PDF packet containing the following information:

  1. A brief cover letter describing potential presentation topic(s) and evidence that the nominee can make a suitably broad and compelling presentation
  2. Nominee CV (short format, 1-2 pages)

Please name the PDF nomination file, “NSS-Nom_Lastname.pdf” and email to Rosalynn Sylvan ( using the subject line: “C-DEBI Networked Speaker Series Nominee”. Speaker selection will begin immediately and will continue until all 2020 slots are filled.