What are the effects of bioluminescent organisms on the surfaces of cast iron outdoor sculptures?

Bioluminescent organisms, such as certain fungi or marine bacteria, can colonize the surfaces of cast iron outdoor sculptures, creating a mesmerizing glow that transforms the artwork at night. While this natural phenomenon adds an ethereal beauty to the sculptures, it also raises concerns about potential long-term effects. The metabolic processes of these organisms may accelerate corrosion or alter the patina of the cast iron. However, some artists intentionally incorporate bioluminescence into their work, embracing this unique interaction between art and nature. The presence of these light-emitting organisms also attracts nocturnal pollinators, creating an unexpected ecological dimension to urban art installations. Conservationists debate whether to preserve or remove these organisms, as they represent both a threat to the sculpture's integrity and a fascinating example of nature's adaptation to human-made structures.