• Between 1999 and 2006 Koala population had dropped 26% in Queensland. 
• By 2008 it was estimated there were around 2300 Koalas with more than a 50% population loss in less than 3 years. 
• Main threats for Koala survival are a loss of habitat, vehicular trauma, dog attacks, urbanisation, disease and climate change.
  
  

  http://www.ehp.qld.gov.au/wildlife/koalas/research/pdf/koala-coast-report2010.pdf

A quick population rate model to help get acquainted to modular designs.

This is a basic model for use with our lab section.  The full BIDE options.

Exponential growth model for humans, based on birth rate and death rate, both a function of consumption.

This is a basic BIDE (birth, immigration, death, emigration) model.  Not all parts are implemented, however Birth and Death are.

This simulation examines the linkages between cultural, material, spatial demographic, and hierarchical dynamics.

WIP from Eric Pruyt Netherlands

Adapted from Hartmut Bossel's "System Zoo 3 Simulation Models, Economy, Society, Development."

​Population model where the population is summarized in four age groups (children, parents, older people, old people). Used as a base population model for dealing with issues such as employment, care for the elderly, pensions dynamics, etc.

This is model of compounded interest.

Demographic transition model.

Adapted from Hartmut Bossel's "System Zoo 3 Simulation Models, Economy, Society, Development."

​Population model where the population is summarized in four age groups (children, parents, older people, old people). Used as a base population model for dealing with issues such as employment, care for the elderly, pensions dynamics, etc.

Simulation of how tiger population and anti poaching efforts effect the black market value of tiger organs.

Exploring the conditions of permanent coexistence, rather than gradual disappearance of disadvantaged competitors. ​Z506 p32-35 System Zoo 3 by Hartmut Bossel.

Simple mock-up model of how prioritizing various push-pull factors impacts the size of the immigrant population over time as well as economic benefits to the U.S. economy.

Simulation of how tiger population and anti poaching efforts effect the black market value of tiger organs.

OVERSHOOT GROWTH GOES INTO TURBULENT CHAOTIC DESTRUCTION

The existing global capitalistic growth paradigm is totally flawed

The chaotic turbulence is the result of the concept of infinite bigness this has been the destructive influence on all empires and now shown up by Feigenbaum numbers and Dunbar numbers for neural netwoirks

See Guy Lakeman Bubble Theory for more details on keeping systems within finite limited size working capacity containers (villages communities)

This is a basic model for use with our lab section.  The full BIDE options.

The Logistic Map is a polynomial mapping (equivalently, recurrence relation) of degree 2, often cited as an archetypal example of how complex, chaotic behaviour can arise from very simple non-linear dynamical equations. The map was popularized in a seminal 1976 paper by the biologist Robert May, in part as a discrete-time demographic model analogous to the logistic equation first created by Pierre François Verhulst. 

Mathematically, the logistic map is written

where:

 is a number between zero and one, and represents the ratio of existing population to the maximum possible population at year n, and hence x0 represents the initial ratio of population to max. population (at year 0)r is a positive number, and represents a combined rate for reproduction and starvation. To generate a bifurcation diagram, set 'r base' to 2 and 'r ramp' to 1
To demonstrate sensitivity to initial conditions, try two runs with 'r base' set to 3 and 'Initial X' of 0.5 and 0.501, then look at first ~20 time steps

Симуляция того, как популяция животного и методы борьбы с браконьерством влияют на цену данного животного на чёрном рынке.

A simple simulation used to observe the California Yellowtail population in San Diego