Principal Investigator: 

Puni grew up in the suburbs of Chennai (Madras), India. He emigrated to the USA for graduate school in 2000, and discovered his passion for general rules underlying biomass accrual. He moved to Stillwater, OK in 2009, and values its simple, peaceful ambiance. He and his wife have a son and a daughter. For fun, Puni likes to travel, cook, and play with his kids. 

Postdoctoral associates:

Rachel Hartnett (2018 – ) College of Arts & Sciences Diversity Postdoctoral Fellow. 

Clay Prater (2020 – ) NSF Rules of Life Postdoctoral Fellow.

Doctoral students: 

Yetkin Ipek (2018 – ) Ionomics of cyanobacterial growth. 

Undergraduate students:

Autumn Sutton (2019 – ) Zooplankton diversity in Oklahoma reservoirs. Wentz Scholar.

Ben Nelson (2018 – ) Protein accrual rates in Daphnia. Niblack Scholar. 

Tyler Johnson (2017 – ) Iron-fecundity relationships in freshwater zooplankton.

High school students:

Britney Nelson (2019 – ) Phosphorus nutrition and trace element toxicity interactions in Daphnia. Morrison High School, OK.

Alumni (PAG= position after graduation):


(1)Ryan Sherman (2014 – 2019) Ecology and evolution of phosphorus use in Daphnia. PAG: Assistant Professor, MacMurray College, IL. 

(2)Patrick Lind (2013 – 2018). Nutritional stoichiometry of organisms at the base of freshwater foodwebs, beyond the Redfield ratio. PAG: Postdoctoral Fellow, University of Arkansas.

(3)Adam Simpson (2012-2017). Investigating the evolutionary origins and mechanisms underlying xenobiotic sensitivity using resurrection ecology. PAG: Lecturer, Pennsylvania State University, Erie. Co-advised with Belden.

(4)Jared Goos (2011-2016). The Stoichiometry of Sexual Dimorphism in Hyalella Amphipods. PAG: Postdoctoral Fellow, University of Texas, Arlington. Current position: Clinical Research Scientist, BioFire Diagnostics, Salt Lake City, UT.

(5)Priyanka Roy Chowdhury (2010-2014). Sources, mechanisms, and consequences of intraspecific variation in stoichiometric traits of Daphnia. PAG: Darwin Postdoctoral Fellow, University of Massachusetts, Amherst. Current position: Assistant Professor, Keene State College, NH.


(1) Danielle Alba (2015). Life in the extreme: The evolutionary stoichiometry of Poecilia mexicana. Co-advised with Tobler. 

Undergraduates (only those who conducted independent research over at least 2 semesters are listed):

(1) Taylor Brooks (2017- 2018) – Honor’s Thesis Co-advised with Wilder. PAG: USFW Intern.

(2) Kristina Baker (2013 – 2017) – Niblack, Wentz Scholar. PAG: PhD school. 

(3) Asad Rehman (2013 – 2014)  – Wentz Scholar. PAG: MD school.

(4) Marc Cordi (2011 – 2013) – Wentz Scholar. Transferred before graduation. 

(5) Rosa Yorks (2009 – 2013) – Wentz, Niblack, and Goldwater Scholar. PAG: DPharm school.

High school students

(1) Nicole Biddinger (2012 – 2013) Heat tolerance of ancient Daphnia genotypes. Bartlesville High School, OK.