Experimental evolution

I am currently using experimental microbial communities to investigate how competition constrains (or promotes) the evolution of antibiotic resistance and elevated mutation rates. I am also using fast-growing aquatic duckweed plants to experimentally test the roles of recombination and polyploidy in adaptative evolution.

Previously, I have used the Pseudomonas fluorescens model adaptive radiation to investigate whether time-integrated area and energy were better predictors of extant diversity than were contemporary 'snapshot' measures.

  Fig. 1 - Calculation of time-integrated area-energy.

Fig. 1- Calculation of time-integrated area-energy.

  Fig. 2 - The relationship between time-integrated productivity and diversity. 

Fig. 2- The relationship between time-integrated productivity and diversity. 

  Fig. 3 —  My take on the ' People's Chemostat ' — an inexpensive system for the continuous culture and experimental evolution of microorganisms. 

Fig. 3 — My take on the 'People's Chemostat' — an inexpensive system for the continuous culture and experimental evolution of microorganisms.