Collapse or not? Effects of drying on heavily decayed archaeological wood in soil
The physical response of heavily decayed archaeological wood to water evaporation in soil was studied in a model experiment. Ten wood samples from a kitchen midden at Kangeq in Western Greenland and four wood samples from the Danish bog site Nydam were used in the experiment. Microscopic analysis sh...
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ftreadpublicatio:oai:pure.atira.dk:publications/eb2898a7-9ae0-4494-93df-507521b8f6a0 2024-01-07T09:43:40+01:00 Collapse or not? Effects of drying on heavily decayed archaeological wood in soil Rosenfeld Lauridsen, Nanna Matthiesen, Henning David, Gregory Pedersen, Nanna Bjerregaard 2023 https://adk.elsevierpure.com/da/publications/eb2898a7-9ae0-4494-93df-507521b8f6a0 eng eng https://adk.elsevierpure.com/da/publications/eb2898a7-9ae0-4494-93df-507521b8f6a0 info:eu-repo/semantics/closedAccess Rosenfeld Lauridsen , N , Matthiesen , H , David , G & Pedersen , N B 2023 , ' Collapse or not? Effects of drying on heavily decayed archaeological wood in soil ' , pp. 59-66 . archaeological wood bacterial decay collapse fungal decay soil moisture wood-water relations /dk/atira/pure/researchoutput/artisticdevelopment/no name=No conferenceObject 2023 ftreadpublicatio 2023-12-13T23:56:25Z The physical response of heavily decayed archaeological wood to water evaporation in soil was studied in a model experiment. Ten wood samples from a kitchen midden at Kangeq in Western Greenland and four wood samples from the Danish bog site Nydam were used in the experiment. Microscopic analysis showed the secondary cell wall was totally decayed in all samples. The samples from Kangeq were decayed by wood degrading fungi and the samples from Nydam were decayed by bacteria. Following characterisation, the samples were buried in moist soil that was allowed to slowly dry out in the laboratory by evaporation at room temperature with sensors measuring changes in soil water potential and soil moisture. The mass, radial shrinkage and cell wall collapse of the individual samples were determined after 26, 48, 56, 62 and 82 days in the soil. During this period, the water content of the soil decreased from 48 to 22% vol and the water potential dropped from 0 to -65 kPa, corresponding to a decrease in relative humidity (RH) within the soil from 100 to 99.95% RH. The archaeological wood from Nydam showed a high radial shrinkage and cell collapse, while samples from Kangeq only showed moderate radial shrinkage and no cell collapse with decreasing water content of the soil. The absence of cell collapse in the wood samples from Kangeq is surprising considering the degree of degradation of the secondary cell wall compared to the prevalent collapse theory of degraded archaeological wood. Conference Object Greenland Architecture, Design and Conservation - Danish Portal for Artistic and Scientific Research: Research Outputs Greenland Kangeq ENVELOPE(-55.167,-55.167,72.450,72.450) |
institution |
Open Polar |
collection |
Architecture, Design and Conservation - Danish Portal for Artistic and Scientific Research: Research Outputs |
op_collection_id |
ftreadpublicatio |
language |
English |
topic |
archaeological wood bacterial decay collapse fungal decay soil moisture wood-water relations /dk/atira/pure/researchoutput/artisticdevelopment/no name=No |
spellingShingle |
archaeological wood bacterial decay collapse fungal decay soil moisture wood-water relations /dk/atira/pure/researchoutput/artisticdevelopment/no name=No Rosenfeld Lauridsen, Nanna Matthiesen, Henning David, Gregory Pedersen, Nanna Bjerregaard Collapse or not? Effects of drying on heavily decayed archaeological wood in soil |
topic_facet |
archaeological wood bacterial decay collapse fungal decay soil moisture wood-water relations /dk/atira/pure/researchoutput/artisticdevelopment/no name=No |
description |
The physical response of heavily decayed archaeological wood to water evaporation in soil was studied in a model experiment. Ten wood samples from a kitchen midden at Kangeq in Western Greenland and four wood samples from the Danish bog site Nydam were used in the experiment. Microscopic analysis showed the secondary cell wall was totally decayed in all samples. The samples from Kangeq were decayed by wood degrading fungi and the samples from Nydam were decayed by bacteria. Following characterisation, the samples were buried in moist soil that was allowed to slowly dry out in the laboratory by evaporation at room temperature with sensors measuring changes in soil water potential and soil moisture. The mass, radial shrinkage and cell wall collapse of the individual samples were determined after 26, 48, 56, 62 and 82 days in the soil. During this period, the water content of the soil decreased from 48 to 22% vol and the water potential dropped from 0 to -65 kPa, corresponding to a decrease in relative humidity (RH) within the soil from 100 to 99.95% RH. The archaeological wood from Nydam showed a high radial shrinkage and cell collapse, while samples from Kangeq only showed moderate radial shrinkage and no cell collapse with decreasing water content of the soil. The absence of cell collapse in the wood samples from Kangeq is surprising considering the degree of degradation of the secondary cell wall compared to the prevalent collapse theory of degraded archaeological wood. |
format |
Conference Object |
author |
Rosenfeld Lauridsen, Nanna Matthiesen, Henning David, Gregory Pedersen, Nanna Bjerregaard |
author_facet |
Rosenfeld Lauridsen, Nanna Matthiesen, Henning David, Gregory Pedersen, Nanna Bjerregaard |
author_sort |
Rosenfeld Lauridsen, Nanna |
title |
Collapse or not? Effects of drying on heavily decayed archaeological wood in soil |
title_short |
Collapse or not? Effects of drying on heavily decayed archaeological wood in soil |
title_full |
Collapse or not? Effects of drying on heavily decayed archaeological wood in soil |
title_fullStr |
Collapse or not? Effects of drying on heavily decayed archaeological wood in soil |
title_full_unstemmed |
Collapse or not? Effects of drying on heavily decayed archaeological wood in soil |
title_sort |
collapse or not? effects of drying on heavily decayed archaeological wood in soil |
publishDate |
2023 |
url |
https://adk.elsevierpure.com/da/publications/eb2898a7-9ae0-4494-93df-507521b8f6a0 |
long_lat |
ENVELOPE(-55.167,-55.167,72.450,72.450) |
geographic |
Greenland Kangeq |
geographic_facet |
Greenland Kangeq |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
Rosenfeld Lauridsen , N , Matthiesen , H , David , G & Pedersen , N B 2023 , ' Collapse or not? Effects of drying on heavily decayed archaeological wood in soil ' , pp. 59-66 . |
op_relation |
https://adk.elsevierpure.com/da/publications/eb2898a7-9ae0-4494-93df-507521b8f6a0 |
op_rights |
info:eu-repo/semantics/closedAccess |
_version_ |
1787424937118531584 |