Projects tagged ‘ecology’ and ‘simulation’

Daisy is a mechanistic simulation model of the physical and biological processes in an agricultural field. It traces the fate of water, energy, carbon, nitrogen, and pesticides, both above and below ... [More] ground. The model is able to predict production, environmental impact in the form of leaching, and change in soil (carbon) quality over time. Another common use is as an upper boundary for a groundwater model. [Less]

Important: I am moving to Sourceforge. Check out the new website. I'll keep this old page up for a while, however. This is a simulation program written in C++ and meant for studying populations that ... [More] follow rules. It can be though of as a continuous analog to Conway's game of life, in a rough sense. Organisms are objects in the computer's memory and they can move around and interact, grow and die. There are many possibilities for studying ecology and evolution, as well as artificial intelligence. The user interface is extremely minimal and knowledge of C++ is required for meaningful work that differs from the programming that it so far contains. Please be aware that it is in prelease mode, and while the source code is available, there is no instruction at the moment on how to use it. I shall rectify this situation in due time. In the mean time if you need more information, please email me. Thus, it is not meant to be used by anyone at the current time. If you'd like to try you're more than welcome, of course. For now, check out the YouTube Video of it in action. Sorry for the low quality! NewsSunday, April 20, 2008: Added the option to turn graphics on or off in the configuration file: "graphics: 0" is off, "graphics: 1" is on. Also I want to move this page to Sourceforge so I can have more control over the website. I submitted my request today. Want To Help?Are you interested in modelling biology with computer simulation? I am inviting all such individuals to email me at: automorphism (at) gmail (dot) com If interested in being a volunteer developer for this project. The project is coded in C++ and is kept in a git repository. Git is not hard to learn if you're willing, though. You don't even have to know how to program, as I am also looking for beta testers, especially for other operating systems. Some of the immediate goals of this project are: Easy configuration of different environments Plugin type interface for defining new environment rules Good documentation Lots of testing on other systems Thanks to the kind people (particularly Petr Baudis) at repo.or.cz, anyone can now fetch a copy of the git master branch of this project (updated frequently) by using this command: git clone git://repo.or.cz/biocity.git Or through the slower http protocol: http://repo.or.cz/r/biocity.git See summary page. [Less]

DIM SUM: Demography and Individual Migration Simulated Using a Markov chainDIM SUM (Demography and Individual Migration Simulated Using a Markov chain) is a stand-alone Java program for the simulation ... [More] of population demography and individual migration, while keeping track of genetic relationships. It does not rely on assumptions of the coalescent or of discrete population boundaries. It is extremely flexible, allowing the user to set the positions of borders, the reaction of an organism to a border, local and global carrying capacities, individual dispersal kernels, rates of reproduction, and strategies for sampling individuals. Spatial variables may be specified using image files (e.g., as exported from GIS software) and may vary through time. DIM SUM will be useful for testing of phylogeographic methods (e.g., nested clade phylogeographic analysis, coalescent-based tests, and continuous-landscape frameworks), landscape-genetic methods, and specific violations of coalescent assumptions, as well as visualizing hypotheses of biological invasions, and as a pedagogical tool. If you use DIM SUM, please cite: Brown, J.M., K. Savidge, and E. McTavish. 2009. DIM SUM: Demography and Individual Migration Simulated Using a Markov chain. Molecular Ecology Resources. Submitted. [Less]

java code for simulating farmland weed and bird populations.

This is a fork of the Global Extinction Awareness Program's ecosystem simulation software. This one of several models designed to look at Human survival over the next 50 years. The source-code will be uploaded here soon. Watch this space ...