An assembly of interlinked artificial ecosystems that can grow food, generate energy, clean the air, heat and cool buildings, etc. Today they are primarily used to treat wastewater. They were developed by ecological designer John Todd. Related pages: " Ecological design at Ocean Arks International"

a contained ecosystem primarily powered by sunlight

a contained ecosystem which is designed to accomplish a specific task or series of tasks

an ecosystem, albeit a unique one

a unique technology