This page provides access to the Vortex Population
Viability Analysis software produced by Bob Lacy (Conservation, Education, and Training, Chicago
Zoological Society, Brookfield, Illinois, USA).
Vortex is copyrighted, but is distributed without cost for
the purpose of furthering conservation and research. Individuals and
not-for-profit organizations are hereby given licenses for using Vortex in
research and conservation.
Distribution of Vortex is restricted to:
- distribution by the Chicago Zoological Society;
- distribution by the IUCN/SSC Conservation Breeding Specialist Group;
- downloading the program
from the Internet (Vortex 972install.zip)
by individuals and not-for-profit organizations for their own research and
conservation applications;
- redistribution without charge
of the unmodified executable program for the purposes described above.
Redistribution of Vortex, in whole or in part, by any for-profit organization
or for any profit-making purposes, is expressly forbidden.
A Note About Cost
Vortex is provided free of charge because of the commitment of the Chicago
Zoological Society to making it widely available to further biodiversity
conservation. Similarly, the manual, developed by CBSG, is provided for
downloading because CBSG cares about saving species and their habitats.
However, the initial development and continuing improvement of the software and
manual do represent a significant commitment by these conservation
organizations. The rate at which improvements can be made is determined by the
resources available to support that work.
If your budget allows it, please consider making a donation to support the
further development of Vortex. If you find the software to be especially
valuable to you, consider donating perhaps US$100 (a wild guess about the
investment of resources per user that have gone into Vortex), or more or less
as you feel is appropriate. If you find the manual to be especially helpful,
consider donating to CBSG. As a side benefit to US tax-payers, donations to
either the Chicago Zoological Society or CBSG are tax-deductible.
Donation information
Chicago Zoological Society
Send a check payable to
the
Chicago Zoological Society to:
Vortex Donation
Department of Conservation Biology
Brookfield Zoo
Brookfield, IL 60513
USA |
|
CBSG
Send a check payable to CBSG to:
Vortex Donation
CBSG
12101 Johnny Cake Ridge Road
Apple Valley, MN
55124
USA
|
Download Vortex downloads the current version (9.99b, released 17 July 2012) of Vortex (about 15 MB).
Download Vortex Manual downloads the Vortex 9 manual (about 5 MB).
Installation Instructions
Samples of Vortex Projects
Recent Changes and Bug Fixes
Vortex Users Listserv
To subscribe to the Vortex users Listserv (email discussion
group), go to VORTEX
Listserv.
Information about the Vortex Listserv discussion group is available at listserv.net (2 KB).
If you think you have discovered a bug in Vortex, please go to VORTEX Bug Report.
If you experience problems using Vortex, we encourage you to check the manual first, but if you still have questions, you may email us at help@Vortex9.org.
Vortex is copyrighted but not copy protected. Individuals
and not-for-profit organizations can make copies of Vortex for use in their own
research and conservation efforts or for others who have similar need for it.
You cannot legally sell the program to others or distribute it as your own
work.
Vortex CD and Printed Manual
To purchase Vortex on CD, with a printed manual, send a check for US $75 made out to CBSG to:
CBSG
12101 Johnny Cake Ridge Road
Apple Valley, MN 55124 USA
Email address: office@cbsg.org
Good luck in your use of Vortex and all of your conservation
efforts!
Other software programs by Bob Lacy are available on his website.
