This page is part of the archives of the IshCon.org discussion forums, as they existed from November 2002 to January 2007. Some links and other content references may be outdated or broken. For more information about IshCon, visit www.ishcon.org.
Topic: Population Modeling
Part of the forum "Ishmael and Saving the World" in the IshCon Forum Archive
| Poster and Date | Post |
| WannaBeGypsy Sun Mar 13th, 2005 at 06:18 AM |
http://ccl.northwestern.edu/netlogo/models/ I can't stop playing with this. Once I figure out how to make my own it will be a glorious day. |
| etbnc Sun Mar 13th, 2005 at 09:13 AM |
Excellent! There are some useful visualization tools at that site. Thank you. I like the way the rabbits-grass-weeds model incorporates energy into its behavior. I thought about "the oil we eat" as I watched that one run. Thanks again. |
| ProjectPurity Sun Mar 13th, 2005 at 10:06 AM |
These are certainly cool to use |
| ProjectPurity Sun Mar 13th, 2005 at 10:06 AM |
"etbnc" wrote: All models are wrong, but some are useful. |
| WannaBeGypsy Sun Mar 13th, 2005 at 02:24 PM |
http://ccl.northwestern.edu/netlogo/models/run.cgi?WolfSheepPredation.780.547 I really like this wolf, sheep, grass model. If you increase the grass regrowth time and leave all other settings at stalk, then it ends up killing the wolves!!!? |
| WackyMorningDJ Sun Mar 13th, 2005 at 07:06 PM |
hahaha, these are really fun! |
| ProjectPurity Sun Mar 13th, 2005 at 09:43 PM |
By altering the nutrition of the grass for an increase you can cause a population spike in the sheep (the wolves are already dead, mind you [why do they die out so easily, it just seems that their oscilations get so dramatic that one run it becomes none]), they will keep breeding at a rate that exceeds the grass growth, by far..... the whole thing slows down really bad once your population gets into the 10,000s. They can almost double in population with the grass number being 0. Then they crash..... |
| WackyMorningDJ Sun Mar 13th, 2005 at 10:18 PM |
Well, I think that population fluctuations affect the higher-ups in the food chain a little more. Just more variables that can cause a change in the wolf population. 'Couse, I'm just guessing. It made sense to me. |
| Nene Sun Mar 13th, 2005 at 11:15 PM |
Hey -- Predators tend to have lower birth rates so they are more susceptible to dramtic ecological fluctuations... especially when you create a model with a single prey species :wink: Janene |
| This page is part of the archives of the IshCon.org discussion forums, as they existed from November 2002 to January 2007. Some links and other content references may be outdated or broken. For more information about IshCon, visit www.ishcon.org. |