Ecomaster and Cascoly Critters - Software: Ecology and biology simulations for all ages Wa-Tor for Windows - Site offers a population ecology simulation game pitting sharks against fish. The populations may fluctuate or may go extinct, depending on the initial parameters and subsequent random events. RAMAS Ecological and Environmental Software - Offers software for ecology, conservation biology, wildlife management, and human health risk analysis. Data analysis for endangered and threatened species, models of extinction risk assessment linked to geographic information systems. Biota - Microbial Ecology Resources' software; this particular item will run simulations of multiple species in a specific environment. Most variables can be manipulated. Environmental Design Making - Microbial Ecology Resources' software designed for students. Allows students to create ecosystems to gain understandings of ecosystem functionality and productivity. Ecological Software Solutions - Software for biology, ecology, geography, wildlife fisheries and the environmental sciences. KrebsWin - Programs from Ecological Methodology by Charles J. Krebs, compiled to run under Windows 3.x and Windows 9x. ECOSIM : Ecosystem Simulation - Information and links concerning ecological modeling and application of simulation to ecology. LemnaTec Image Processing - Bio-testing for potentially hazardous substances using image processing of cultured Lemna. Wildlife Ecology Software - A clearing-house for wildlife ecology related software, for applications such as habitat analysis, diversity indices, simulations, general population dynamics, capture/recapture, survival, energetics, statistics, home range, and telemetry. ADE-4 - Exploratory and Euclidean methods in Environmental sciences. Across Trophic Level System Simulation - A simulation system for the Everglades and Big Cypress Swamp (USA). Pisces Conservation Ltd - Information about ecological software and consultancy services. Gecko - Yale software; downloadable demo available for this software. Designed to teach ecosystem dynamics to advanced ecology students. Populus - Simulations of Population Biology - Software containing set of simulations used to teach population biology and evolutionary ecology at the University of Minnesota. Freely downloadable for educational use. CyberTracker - Free software for data collection and analysis in ecological and environmental field work. Patuxent Software Archive - Site contains software for ecological management, including tagging game and ecosystem analysis. MjM Software Design - PC-ORD software for multivariate statistical analysis of ecological communities, including cluster analysis, ordination, and species diversity. MultiTrace - Jensen Software Systems offer software programs to analyze telemetry data including dive analysis, temperature analysis, deadreckoning, geolocation and pH analysis. Wildlife Counts - Software to help estimate populations of birds and fish in an ecosystem. Oakleaf Systems - Simulations of data based upon relationships presented in the journal Ecology, with 25 different simulations for each journal volume. Fossil Creek Software - Describes and offers POP-II and POP-III population dynamics software, which is used by government and university wildlife biologists to simulate the dynamics of deer, elk, moose and other large animal populations.