Microbial Degradation Processes in Wood when Re-buried into Marine Sediments
Institution
Dept of Wood Science Swedish University of Agricultural Sciences
Box 7008
750 07 Uppsala Sweden
Co-ordinators
Dr. Charlotte Björdal, Research scientist, wood conservator charlotte.bjordal@trv.slu.se
Prof. Thomas Nilsson , thomas.nilsson@trv.slu.se
Aim
The aim of this subproject is to study microbial degradation processes
in wood when re-buried in the sediment of the harbour at Marstrand. Different
depths of burial will be tested as well as the durability of different
wood species.
Method och material
Sound wood stakes of oak, spruce and birch will be exposed into and above
the sediment at different levels. Samples will be retrieved after 6, 12,
24, and 36 month whereas long-term probes (for phase 2 and 3) will be
left for future investigations. Thin sections from each stake (a total
of 216) are investigated by light microscopy to determine the type and
degree of decay by wood degrading fungi and bacteria. Type of decay is
verified using electron microscopy (SEM). The results will led to an evaluation
of re-burial as an useful technique for long term storage of historic
and archaeological wood in the harbour of Marstrand.
Time plan
During the period 2003 - 2005, examination of wood stakes will be carried
out, preliminary results reported to the coordinator, and at the end of
2005 a scientific report on results published.
