If you are interested in our research or software, please contact:
The individual-based modeling program at
Humboldt State is a collaboration among the
Department of Mathematics (Environmental Systems - Mathematical Modeling Graduate Program),
Lang, Railsback & Assoc. (an extremely small research consulting firm),
software developers, and on-campus organizations including the
U.S.D.A. Forest Service's Redwood Sciences Laboratory, the
California Cooperative Fisheries Research Unit, and Humboldt State departments
of Fisheries, Wildlife, and Environmental Resource Engineering.
- The model and software development team is led by Steve Railsback.
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 a consulting scientist and adjunct professor, HSU Department of Mathematics.
- Our head fish ecologist is
Dr. Bret Harvey of the
Forest Service's Redwood Sciences Laboratory and adjunct professor, HSU Fisheries.
Bret and his colleagues Rod Nakamoto and Jason White provide ecological
expertise, conduct field and laboratory studies to support and test
and participate very actively in the development and application of our fish
- Our current software developer is Colin Sheppard.
Colin has degrees in computer science and engineering from Stanford and Humboldt State
Universities and is a research engineer at Humboldt State's Schatz Energy
- The Principal Investigator for this project from 1999 to 2007 was
Dr. Roland Lamberson,
now Professor Emeritus of Mathematics. Dr. Lamberson
participated in the development of a number of individual-based models,
including the pioneering (early 1990s) LANDSCAPE spotted owl model.
- Our software was developed and maintained through 2010 by
Steve Jackson. Steve is a graduate of the
Environmental Modeling program at Humboldt State and an experienced Swarm programmer.
Steve is now on the Mathematics faculty at College of the Redwoods,
- 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.
We have been lucky enough to visit, collaborate, and publish (see the
Products and Publications page
) with many
others, including the following.
- Volker Grimm, Karin Frank, and colleagues,
Helmholtz Centre for Environmental
Research - UFZ, Germany. The
Department of Ecological Modelling at this
institute is a global leader, especially in individual-based modeling.
Dr. Grimm actively collaborates with us on publications concerning modeling theory
and application of individual-based models to ecological theory.
- Prof. Jarl Giske, Geir Huse (now: Institute of Marine Research), and
colleagues in the Theoretical Ecology Group,
Department of Biology, University of Bergen, Norway.
This group is another global leader in individual-based modeling,
especially of marine fish.
- John Goss-Custard (retired; CEH Dorset) and
Richard Stillman (University of Bournemouth, UK) are pre-eminent
and pioneering individual-based modelers of shorebirds.
- Fish ecologist Charles
Gowan did sabbatical research at our Little Jones
Creek study site in the summer of 2005. He addressed 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? 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.
- Computer scientist Steve
Lytinen of DePaul University spent sabbatical semesters with us in
the fall of 2005 and in 2011. He worked with us to review the various 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 and a set of
(now widely used) template models for each platform, available
at the Swarm Development
Group site. Steve also helps us teach modeling short-courses.
- Tamara Grand, Simon Fraser University;
Dr. Grand visited us in September, 2000 and collaborated with us on
development of several models.
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, U.S. Bureau of Reclamation,
the CALFED Bay-Delta Program, and the U. S. Fish and Wildlife Service.
Tamara Grand and Geir Huse observe coho and cutthroat at the California Cooperative
Fisheries Unit's Prairie Creek research site, Redwood National Park.
Volker Grimm contributes his expertise on many important topics.
|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.
|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).