Koehl Research Interests
I study the physics of how organisms interact with each other and their environments. My goal is to elucidate basic physical rules that can be applied to different kinds of organisms about how body structure affects mechanical function in nature. I combine techniques from fluid and solid mechanics with those from biology and ecology to do experiments in the field as well as in the laboratory.
We have been using this approach to address a variety of questions, including how microscopic creatures swim and capture food in turbulent water flow; how marine larvae recruit into benthic habitats; how being multi-cellular affects swimming, feeding, and predator avoidance in protozoan ancestors of animals; how morphology affects aerodynamic performance of extinct ancestors of flying insects and birds; how wave-battered marine organisms avoid being washed away; how hydrostatic organisms change shape and move through their habitats; and how suspension-feeding aquatic animals capture particles and how olfactory antennae catch odors from water moving around them.
Links to Specific Topics
- Fluid dynamics of hairy little legs
- Microscopic organisms swimming in turbulent flow/Larval Settlement
- Fluid dynamics of odor capture by olfactory antennae
- Selective factors in the evolution of multi-cellularity
- How do benthic organisms withstand and utilize moving water?
- Biomechanics of hydrostatic skeletons
- Biomechanics of morphogenesis
- Locomotion, evolution of novelty, consequences of body size