Biota is a program that;
1) models the ways that species interact to cause changes in each others' population over time (e.g., predators and their prey; hosts and parasites, plants and pollinators); and
2) simulates research methods in population dynamics by providing the option to turn chosen simulations into 'black box' problems and providing tools that can be used to investigate these problems as if they were field studies.
Biota has two primary modes: Simulation and Problem. In Simulation mode you construct a simulation by specifying the regions, species, interactions among species, migratory patterns, and the starting levels of the populations in the regions. You can change all of the available parameters that underlie growth rates: the model of growth, interaction coefficients, population densities, properties of research tools, etc.
Problem mode is analogous to the situation faced by a researcher who must go into the field and figure out the population dynamics of the species there. You begin without knowing what species are there, what their current population levels are, how many different breeding populations there are, or what the migration patterns are. Your task is to figure the dynamics of these populations. You are provided access to a set of research tools that will give you information about what is there and will provide the ability to estimate population levels through sampling and experimental design.
Added two menu items to the Species menu:
Macintosh or Power Macintosh