Fungal bioturbation paths in a compact disk

We report here on bioturbation traces, with micro-dendrite textures, compos ed of a mixture of altered aluminum and polycarbonate, which have been deve loped in a common compact disk (CD), destroying information pits. Fungal hy phae proliferated in these deteriorated zones, and Geotrichum-type fungus w as isolated from surface-sterilized CD fragments. The severe biodeteriorati on described is attributed to the slow growth of this arthroconidial fungus on the CD material in the tropical indoor environment of Belize, Central A merica (similar to 30 degreesC, similar to 90% humidity).