{ Biological damage }

Biological damage

Biodeterioration is any undesirable change in the book caused by the activities of organisms (bacteria, actinomycetales, fungi, insects, rodents). Organisms that attack materials, objects, and buildings, called biodeteriorating agents. Molds and insects cause significant damage to books.

Damage categories

Description Pictures
Not selected There is mould damage in the textblock and covers. Characteristic features of it are colonies of microscopic fungi of different colour (black, grey, white, green, brown) and surface patterns (farinose, felted, velvety), aggregates of fungal spores
There is mould damage in the textblock and covers. Characteristic features of it are colonies of microscopic fungi of different colour (black, grey, white, green, brown) and surface patterns (farinose, felted, velvety), aggregates of fungal spores
There is mould damage in the textblock and covers. Characteristic features of it are colonies of microscopic fungi of different colour (black, grey, white, green, brown) and surface patterns (farinose, felted, velvety), aggregates of fungal spores
Not selected Damage to the covers and textblock caused by insects. Characteristic features are insect bite marks: exit holes in the wood, tunnels, passages, chrysalis chambers, wood dust from the wood; dust of any fine wood or other material, chrysalis shells
Damage to the covers and textblock caused by insects. Characteristic features are insect bite marks: exit holes in the wood, tunnels, passages, chrysalis chambers, wood dust from the wood; dust of any fine wood or other material, chrysalis shells