How fast a species expands its range depends on characteristics of the species and on random variation in time and space. This is a difficult problem to study in nature because of the large time and space scales that may be involved, and the lack of repeatability. To address these limitation, this project examines the problem in the laboratory using the flour beetle, Tribolium castaneum, as a model system. The study will include many replicates of artificial landscapes and varying demographic parameters under controlled conditions in an incubator. The experimental work will be coordinated with the development of mathematical models that incorporate variability. The models will allow extension to other systems and the development of general principles.

The problem of spatial spread is of both great scientific and practical importance. The spread of invasive species is one of the most important and costly environmental issues facing the United States. Yet, there have been essentially no detailed, repeated experiments on how predictable spread is, and on how demographic parameters affect spread. As the current problem illustrates, progress in many ecological problems depends on the joint application of experimental and mathematical methods, so the training received by undergraduates during the course of this work will have very significant long term impacts.

Agency
National Science Foundation (NSF)
Institute
Division of Environmental Biology (DEB)
Type
Standard Grant (Standard)
Application #
0516150
Program Officer
Nancy J. Huntly
Project Start
Project End
Budget Start
2005-09-01
Budget End
2009-08-31
Support Year
Fiscal Year
2005
Total Cost
$291,893
Indirect Cost
Name
University of California Davis
Department
Type
DUNS #
City
Davis
State
CA
Country
United States
Zip Code
95618