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Theses

Do biotic and abiotic factors combine to affect the weathering of wood in use class 3 ?

Abstract : The weathering of wood, and especially modified wood, through abiotic factors has been extensively studied. Much less research has been conducted on the influence of biotic factors on untreated wood in exterior use that is not in ground contact, i.e. use class 3. There is especially a lack of research concerning the influence of the presence of bacterial and fungal communities on the weathering process of wood. The hypothesis is set that interacting mechanisms between fungi and bacteria as well as between microorganisms and abiotic factors have an impact on the pace of the weathering of wood. The aim of the project is to identify synergistic effects between biotic factors such as bacteria (Eubacteria) and fungi (Basidiomycota and Ascomycota) and abiotic factors such as light, temperature and moisture on the weathering of oak (Quercus petraea), Douglas fir wood (Pseudotsuga menziesii) and partially chest nut (Castanea sativa) in use class 3. In order to measure the influence of weather ing, different visual, chemical, mechanical and microbiological methods were used. Multiple weathering methods were applied to degrade wood samples in natural and artificial conditions. Artificial weathering provided the opportunity of eliminating certain degrading factors and therefore observe the influence of specific factors on the degradation process of wood.
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Submitted on : Thursday, December 2, 2021 - 10:09:07 AM
Last modification on : Friday, December 3, 2021 - 3:09:01 AM

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  • HAL Id : tel-03462866, version 1

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Julia Buchner. Do biotic and abiotic factors combine to affect the weathering of wood in use class 3 ?. Ecosystems. École centrale de Nantes, 2021. English. ⟨NNT : 2021ECDN0017⟩. ⟨tel-03462866⟩

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