FantasticLogo is a NetLogo model for simulating the complex predator-prey dynamics of bleurghs and oopalamcas, two species native to planet Magy's northern hemisphere. It provides a platform for xenobiology research, allowing users to explore how alien species interact, compete, and adapt within an unfamiliar ecosystem. Beyond research, the model also demonstrates integration with the LogoClim NetLogo model, enabling simulations that link species dynamics with planetary climate conditions.
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FantasticLogo operates on a grid of patches, where each patch represents the soil were bleurghs grow and where oopalamcas roam. Each patch corresponds to a specific geographical area and stores historical data values for precipitation and minimum and maximum temperature.
A oopalamca is a small, purple, creature known for its voracious appetite and distinctive croaking sound. Bleurghs are large, carnivorous plants that can move slowly and capture prey with their funnel-shaped mouths. In the model, oopalamcas represent the prey species, while bleurghs are the predators.
During the simulation, bleurghs grown on the patches depending on current climate conditions. After they hit a certain age, they can capture and prey roaming oopalamcas, controlling their populations. The behavior and interactions of these species are influenced by the climate data associated with each patch. The results can be visualized on a chart that tracks the populations of both species over time.
FantasticLogo takes inspiration from the 1973 animated film La Planète Sauvage by René Laloux. Set on a strange, hypnotic world, it tells of the Draags—towering blue beings who treat humans, known as Oms, as little more than pets.
The model’s dynamics are grounded in the classic Lotka-Volterra equations, originally formulated by Alfred J. Lotka (1925) and Vito Volterra (1926), to describe predator–prey interactions. The code builds on Wilensky’s (1997) Wolf Sheep Predation model.
The model was created to serve as an example of integration of climate data from WorldClim 2.1 using the LogoClim NetLogo model. The climate data influences the behavior and interactions of the species, adding a layer of complexity to the simulation.
Climate data is based on historical climate data (1951-2024) from WorldClim 2.1 (Fick & Hijmans, 2017), related to a box selection of the Amazon region. The data can be reproduced using the Quarto notebooks located in the qmd folder of the repository, which are adaptations from the Quarto notebooks provided by the LogoClim model.
To get started, ensure you have NetLogo installed. This model was developed using NetLogo 7.0.0, so it is recommended to use this version or later.
The model relies on the LevelSpace (ls) NetLogo extension, that is automatically installed when the model is run for the first time.
You can download the latest release of the model from its GitHub Releases page. For the development version, you can clone or download its GitHub repository directly.
To run the model, make sure to download all files, no only the nlogox
folder.
Once everything is set, open the fantasticlogo.nlogox file located in the
nlogox folder to start exploring!
Refer to the Info tab in the model for additional details.
To cite FantasticLogo use the following format:
Vartanian, D. (2025). FantasticLogo: Predator–prey dynamics on planet Magy with NetLogo [Computer software]. https://doi.org/10.17605/OSF.IO/EAPZU
A BibTeX entry for LaTeX users is:
@Misc{vartanian2025,
title = {FantasticLogo: Predator–prey dynamics on planet Magy with NetLogo},
author = {{Daniel Vartanian}},
year = {2025},
doi = {10.17605/OSF.IO/EAPZU},
note = {Computer software}
}Copyright (C) 2025 Daniel Vartanian
FantasticLogo is free software: you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option) any later
version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program. If not, see <https://www.gnu.org/licenses/>.