Food webs in dynamic habitats
- The
concept of a food web is a major organizing principle for ecology. Standard theory
considers food webs to be predominantly equilibrial structures (with associated
statistical descriptors) in static (unchanging) habitats. Since 1996, I have been
working with Nick
Gotelli (University of Vermont)
on expanding the focus of food web theory to consider non-equilibrium food webs
in habitats that change on the same time scale during which food webs assemble.
For this work, I have used the the Sarracenia "microecosystem"
- the northern pitcher-plant Sarracenia purpurea and the unique food web
of bacteria, protozoa, rotifers, mites, and fly larvae that live within its rainwater-filled
leaves - as a model system (see reviews in Ellison
and Gotelli 2001, and Ellison
et al. 2003). This work has been supported by four grants from the U.S. National
Science Foundation:
Inquiline communities in
changeable pitchers: do nutrients link community assembly to dynamic habitats?
DEB 98-05722 (9/1/1998-2/28/2003) [ Summary
| Full proposal | Publications
from this award | Available datasets ]