New NASA funding!

We were funded by NASA to study how natural populations viruses control photosynthetic sulfur bacteria. Research shows that bacteria in seawater or corals are strongly influenced by viruses. We think that the blooms of purple bacteria in anoxic lakes may also be influenced by viral communities. If correct, this would revolutionize our understanding of the conditions that promote or prevent microbial blooms. To date, most of the controls have thought to been sunlight and sulfide; however, viruses may be the hidden figures behind the persistence and activity of photosynthetic bacteria.

This project is with: Alice Bosco Santos (University of Lausanne), Cynthia Silveira (U Miami), Joe Werne (U Pittsburgh) and Molly O’Beirne (U Pittsburgh)

More about NASA Exobiology here

Welcome ACS Project SEED interns

Bawi Sung and Nahum Gerezgher are both American Chemical Society Project SEED interns in our lab this summer. Bawi is studying Ordovician carbonates and Nahum is studying iron chemistry of a northern Indiana lake. Both are doing an awesome job.

Bawi Sung (foreground) and Nahum Gerezgher (background) homogenizing samples.

Welcome visiting PhD student Mauricio Baldim!

Mauricio will join our lab group as a visiting scholar from the University of Campinas (UNICAMP), Brazil . He will to do geochemical analysis of Archean rock collected from Brazil.

Mauricio sampling in the São Francisco Craton.

Pub: Nature Scientific Reports, 2017

Picture of Martin Lake by Broxton Bird

I’m so stoked that our lab group just published “Midcontinental Native American population dynamics and late Holocene hydroclimate extremes” in Nature Scientific Reports.

It seems like ages ago when we first collected our sediment cores from Martin Lake in 2013.



You can download a free copy of the publication here:

IUPUI news release is here:

Midcontinental Native American population dynamics and late Holocene hydroclimate extremes. Broxton W. Bird, Jeremy J. Wilson, William P. Gilhooly III, Byron A. Steinman & Lucas Stamps. Scientific Reports 7, Article number: 41628 (2017) doi:10.1038/srep41628