Endolithic Microorganisms in the Biodeterioration of the Tower of Beiern / Die Rolle endolithischer Mikroorganismen bei der biologischen Zerstörung am Turm von Beiern

The Tower of Beiern was colonized by various organisms, ranging from endolithic bacteria to higher plants. The paper focuses on the deterioration that the endolithic microorganisms: bacteria and cyanobacteria, algae and funghi, cause on the compact Lioz limestone. The presence of these microorganisms in the subparallel Assuring characteristic of this stone is illustrated as well as their association with the clay minerals present. Their biogeochemical action results in an increase in surface roughness, subsurface porosity and eventual flaking of the stone surface.