[article] 
inStudies in conservation > Vol.67 N°7-8(2022; October-November) (2022-10-01) . - P. 532-544

Titre :	Moisture Interactions Between Mosses and Their Underlying Stone Substrates
Type de document :	texte imprimé
Année de publication :	2022
Article en page(s) :	P. 532-544
Langues :	Anglais (eng)
Catégories :	Calcaire -- Effets du climat Constructions en pierre -- Biodégradation Contrôle non destructif Humidité -- Mesure Monuments historiques -- Conservation et restauration Mousses -- Croissance -- Analyse
Index. décimale :	7.025 Dommages. Conservation. Protection
Résumé :	Mosses are a common type of organism found colonising stone in both the natural and built environment. People responsible for managing and conserving historic buildings often worry that mosses can cause biodeterioration, but there is very little research to date on what controls moss growth and the nature and magnitude of their impact. To help fill this knowledge gap, research has been carried out on limestone walls at Kelmscott Manor, the churchyard at Chipping Norton, and in the laboratory on limestone test blocks, to examine the impact of microclimate variations on both the initial colonisation and spread of mosses, and the impact of moss colonisation on temperature, relative humidity, and moisture conditions. The research used a combination of non-destructive and invasive tests to determine the impact of mosses on moisture relations through direct impacts on surface moisture, water absorption capacity, and open porosity. From the results presented, we can infer that mosses have an impact on water uptake and retention on mortar and limestone at both the surface and subsurface level, and that they may play a role in ‘shielding’ the underlying substrate from light rainfall events. The experimental data also suggests that in certain cases, removing mosses may have more of an impact on moisture regimes than leaving them in situ.
En ligne :	https://www.tandfonline.com/doi/abs/10.1080/00393630.2021.1892430

[article] Moisture Interactions Between Mosses and Their Underlying Stone Substrates [texte imprimé] . - 2022 . - P. 532-544.
Langues : Anglais (eng)
in Studies in conservation > Vol.67 N°7-8(2022; October-November) (2022-10-01) . - P. 532-544

Catégories :	Calcaire -- Effets du climat Constructions en pierre -- Biodégradation Contrôle non destructif Humidité -- Mesure Monuments historiques -- Conservation et restauration Mousses -- Croissance -- Analyse
Index. décimale :	7.025 Dommages. Conservation. Protection
Résumé :	Mosses are a common type of organism found colonising stone in both the natural and built environment. People responsible for managing and conserving historic buildings often worry that mosses can cause biodeterioration, but there is very little research to date on what controls moss growth and the nature and magnitude of their impact. To help fill this knowledge gap, research has been carried out on limestone walls at Kelmscott Manor, the churchyard at Chipping Norton, and in the laboratory on limestone test blocks, to examine the impact of microclimate variations on both the initial colonisation and spread of mosses, and the impact of moss colonisation on temperature, relative humidity, and moisture conditions. The research used a combination of non-destructive and invasive tests to determine the impact of mosses on moisture relations through direct impacts on surface moisture, water absorption capacity, and open porosity. From the results presented, we can infer that mosses have an impact on water uptake and retention on mortar and limestone at both the surface and subsurface level, and that they may play a role in ‘shielding’ the underlying substrate from light rainfall events. The experimental data also suggests that in certain cases, removing mosses may have more of an impact on moisture regimes than leaving them in situ.
En ligne :	https://www.tandfonline.com/doi/abs/10.1080/00393630.2021.1892430