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Thallus

Definition

The body of a lichen, consisting of fungal hyphae housing algal or cyanobacterial cells. The thallus diameter or area is the measurement used in lichenometry.

Related terms

Biological soil crust (biocrust)
A community of cyanobacteria, algae, mosses, fungi, and lichens that colonises bare soil surfaces and forms a thin coherent mat. Relevant to...
Crustose lichen
A lichen growth form in which the thallus grows flat against and into the substrate (bone, stone, wood) and cannot be removed...
Epilithic / epixylous colonisation
Growth of organisms on rock or stone surfaces (epilithic) or on dead wood (epixylous). In forensic contexts, colonisation of bone surfaces by...
Lichenometry
The use of lichen thallus diameter to estimate the minimum age of a surface. Based on the known or measured radial growth...
Succession
The predictable sequence of different insect species colonising remains as decomposition progresses. Early stages attract blow flies; later stages attract beetles, moths,...

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