add_subdirectory(sim_air_flow)
add_subdirectory(sim_cellular_automata)
add_subdirectory(sim_ecosystems_hugget)
add_subdirectory(sim_erosion)
add_subdirectory(sim_fire_spreading)
add_subdirectory(sim_geomorphology)
add_subdirectory(sim_hydrology)
add_subdirectory(sim_ihacres)
add_subdirectory(sim_landscape_evolution)
add_subdirectory(sim_qm_of_esp)
add_subdirectory(sim_rivflow)
add_subdirectory(sim_scimap)
