Natural selection and genetic variation can have profound effects on the dynamics
of populations, but the ramifications have just barely been explroed. We are
currently doing this with projects focused on long-lived plants and fungi. We are
also interested in studying how eco-evolutionary feedbacks impact life histories,
and ecosystem properties.
Senescence in plants and fungi
Do all organisms deteriorate with age? The evidence is equivocal. A significant
portion of our recent research effort is aimed at understanding ageing in long-
lived plants and fungi. See our efforts in the popular science press here.
The evolution of sprouting and flowering
If plants need to sprout to produce energy and reproduce, then why do so many
plants remain underground without any aboveground sprouts for years at a time?
We are working on solutions to this important problem.
Macroevolution of broad interactions
Is there an evolutionary pattern to generalist associations between different
species? We are testing the role of evolutionary history in determining interaction
breadth, using the orchid mycorrhiza as a case study.
Microevolution of symbioses in long-lived species
Could symbioses by adaptive because they buffer against harsh times? We are
using intensive in situ experimentaion to test the impacts of symbioses on the
long-term demography of interacting organisms, using rare forest orchids as the
Here are some informational pages on a few of the specific topics that we cover:
|Evolution of senescence|
|Evolution of complex life histories|
|Soil microbial feedbacks on plant communities|
Copyright 2013 Richard P. Shefferson. All rights reserved.