Contaminated water is part of the operating environment of Gilberto Esparza’s Nomadic Plants. The Mexican artist dates the project 2008–14 and describes a robot carrying living plants, microbial fuel cells and photovoltaic components. Water taken into the system undergoes biological processing. The plant is part of the apparatus’s living requirements, not a decorative sign of environmental concern.
The Prix Ars Electronica archive makes an important division of labor explicit. Microbial processes supply power for electronics; photovoltaic cells power locomotion. Its account also describes sound produced in response to greater water pollution. These are the project’s documented operating claims, rather than results of a technical test conducted for this article. They make the work more specific than the appealing shorthand of a robot that eats waste.
That distribution of energy complicates the word autonomous. Movement depends on sunlight, and the electronic system depends on biological activity. Independence here is conditional: the machine remains tied to the circumstances that sustain its components. That is a useful way to read an environmental artwork. The more closely one follows its inputs, the less convincing the fantasy of a device standing apart from an ecosystem becomes.
Esparza’s documentation locates an intervention at the Río Lerma in Salamanca, Guanajuato, and introduces a video about residents’ relationships with the river. The credits name Carlos Godínez Seoane among the microbial-cell designers and Iván Puig for advice and construction. These acknowledgments give the project a social structure as well as a technical one. The mechanism is presented through the work of people with different forms of expertise.
The work has also reached audiences through documentation. A 2017 Galerie de l’UQAM exhibition included a film of Nomadic Plants, with photographs presented at the Maison du développement durable. The gallery places the film along the Lerma and Grande de Santiago rivers. This matters to how the project travels: an exhibition visitor may encounter the robot through a camera rather than beside the water it uses. The recording can carry the location into the gallery, but it also selects what becomes visible there. Reading the exhibition record alongside the artist’s technical account keeps the machine’s public image distinct from its operation.
The 2013 Honorary Mention in Hybrid Art recorded by Ars Electronica recognizes the artwork. It does not establish treatment capacity. Esparza’s page describes small-scale restorative potential, without supplying the throughput, maintenance record or independently measured water-quality outcomes needed to judge a public treatment system. The distinction keeps a useful ambition in proportion. Nomadic Plants makes dependence tangible; whether such a system could deliver reliable remediation is a further question that needs evidence of its own.