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 - Konferenční příspěvek (zahraniční konf.)
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]
Grant CEP: GA AV ČR IAA300130505
Výzkumný záměr: CEZ:AV0Z30130516
Klíčová slova: xylic substrate * Holocene * trace fossils * insects * fungi * fluvial settings
Obor OECD: 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.
Trvalý link: http://hdl.handle.net/11104/0006385