If you are interested in our research or software, please contact:
The individual-based modeling program at
Humboldt State is conducted collaboratively by
Department of Mathematics (Environmental Modeling Program)
and collaborators at Lang, Railsback & Assoc.,
U.S.D.A. Forest Service, Jackson Scientific Computing, the
California Cooperative Fisheries Research Unit, and a variety of visitors.
- The Principal Investigator for this project is
Dr. Roland Lamberson. Dr. Lamberson
has participated in the development of a number of individual-based models,
including the LANDSCAPE spotted owl model.
- The model and software development team is led by Steve Railsback,
Lang, Railsback & Assoc., Arcata CA.
Dr. Railsback has been conducting fisheries research for California agencies and
utilities since 1992, including building and testing fish IBMs.
From 1986 to 1992, he conducted hydropower and fisheries research at Oak Ridge National Laboratory.
Dr. Railsback is an adjunct professor, HSU Department of Mathematics.
- Our software is developed and maintained by
Steve Jackson,
Jackson Scientific Computing, McKinleyville CA. Steve is a graduate of the
Environmental Modeling program at Humboldt State and an experienced Swarm programmer.
- The prototype of our IBM software
was developed by Glen Ropella and Chris Langton of The Swarm Corp.
Dr. Langton and Glen were formerly staff of the Santa Fe Institute,
a leading center of research on complex systems and agent-based modeling.
- Key research collaborators include
Bret Harvey, Redwood Sciences Laboratory,
U.S. Forest Service; and Walt Duffy (Leader)
and Peggy Wilzbach (Assistant Leader),
California Cooperative Fisheries Research Unit.
- Ken Cummins, director of Humboldt State's Institute for River Ecosystems,
provides his renowned expertise in aquatic ecology.
- Fish ecologist Charles
Gowan did sabbatical research on the question: How
do trout find good habitat?
Our stream trout model assumes that individuals are good at finding the
best available habitat within a daily time step. But how good are real
trout at finding feeding habitat, and what cues do they use to identify
it? at our Little Jones
Creek study site in the summer of 2005. This study
produced the paper "Short-term cues used by foraging trout in a California
stream" by C. Gowan, in Environmental Biology
of Fishes. The abstract is here.
- We hosted the sabbatical of computer scientist Steve
Lytinen. Professor
Lytinen of DePaul University spent a sabbatical semester with us in
the fall of 2005. He worked with us to review the alternative software
platforms for individual-based modeling---e.g., Repast, Swarm, NetLogo---and
to develop materials to help researchers get started with these platforms.
Products include a publication reviewing five platforms (on our publications
and products page) and a set of template models for each platform, available
at the Swarm Development
Group site.
International collaborators:
- Tamara Grand, Simon Fraser University;
Dr. Grand visited us in September, 2000 and currently collaborates with us on
model development.
- Volker Grimm,
Helmholtz Centre for Environmental
Research - UFZ and University of Marburg, Germany.
Dr. Grimm actively collaborates with us on publications concerning modeling theory
and application of individual-based models to ecological theory.
Steve Railsback visited UFZ in May, 2002, and Volker visited us in
October, 2002.
- Geir Huse, University of Bergen
(now: Institute of Marine Research), Norway; Dr. Huse visited us
September 12 - October 10, 2000 to collaborate on fish modeling and application
of Complex Adaptive Systems concepts to ecology.
Sponsors:
Our sponsors have included the U. S. Environmental
Protection Agency, the U.S. Forest Service, Pacific Gas and Electric Company,
Southern California Edison Company, the Electric Power Research Institute,
Columbia Basin Research, and the U. S. Fish and Wildlife Service.
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Tamara Grand and Geir Huse observe coho and cutthroat at the California Cooperative
Fisheries Unit's Prairie Creek research site, Redwood National Park. |
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Volker Grimm contributes his expertise on many important topics. |
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| Bret Harvey with the Redwood Sciences
Laboratory artificial stream, where he and colleagues Rod Nakamoto and Jason White
conduct experiments to support our modeling work. |
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Participants in the session
"Linking Individual Behavior and Population Ecology: Models, Theory, and
Applications" that we organized at the 2004 Ecological Society of America
meeting. Left to right: Lou Gross (University of Tennessee),
Wolf Mooij (Netherlands Institute of Ecology),
Geir Huse (Institute of Marine Resources, University of Bergen, Norway),
Uta Berger (University of Bremen, Germany,
Steve Railsback (Humboldt State), Scott Peacor (Michigan State University),
Jacob Weiner (Royal Veterinary and Agricultural University, Denmark),
Volker Grimm (Centre for Environmental Research Leipzig-Halle, Germany),
and Don DeAngelis (University of Miami).
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