Adina Paytan, Ph.D., will discuss “Using oxygen isotopes in phosphate for source tracking and P cycling” at 3 p.m.on Monday, Oct. 2 in the  Mathile Center.. She will give a second lecture, “Coral and Acid – Impacts of ocean acidification on coral reefs,” at 7 p.m. on Oct. 3 in the Dicke Hall. Both talks are part of the Kritzler Lectureship in Chemistry Series at ONU, and both are free and open to the public.

Paytan is a research professor at the Institute of Marine Sciences at the University of California, Santa Cruz, and was an assistant professor at Stanford University and a postdoctoral researcher at Scripps Institute of Oceanography at the University of California, San Diego. As part of her post-doctoral work, she produced a high-resolution seawater sulfur isotope curve for the past 120 million years.