Xylic substrates at the fossilisation barrier: oak trunks (Quercus sp.) in the Holocene sediments of the Labe River, Czech Republic

0357672 - GLÚ 2011 RIV DE eng C - Conference Paper (international conference)
Mikuláš, Radek
Xylic substrates at the fossilisation barrier: oak trunks (Quercus sp.) in the Holocene sediments of the Labe River, Czech Republic.
Current developments in bioerosion. Berlin ; Heidelberg: Springer, 2008 - (Wisshak, M.; Tapanila, L.), s. 415-429. ISBN 978-3-540-77597-3.
[International Bioerosion Workshop /5./. Erlangen (DE), 29.10.2006-03.11.2006]
R&D Projects: GA AV ČR IAA300130505
Institutional research plan: CEZ:AV0Z30130516
Keywords : xylic substrate * Holocene * trace fossils * insects * fungi * fluvial settings
OECD category: Paleontology

Sediments of the Holocene floodplain of the Labe River provided an accumulation of oak trunks bearing relatively rich and diverse assemblages of borings. Among the recognized morphotypes of borings, four can be attributed to insect feeding, one resulted probably from an enzymatic fungal activity, and the last one is probably a mammal scratch. The borings record three phases of activity: (1) on living trees, (2) on dead trees before their burial by sediment, and (3) on re-buried trunks (i.e., during the last several years). Generally, the wood mass comes mostly from live, healthy floodplain forests, which shows that these were affected by extremely large floods during certain intervals in the Holocene.
Permanent Link: http://hdl.handle.net/11104/0006385