Lacustrine bulk organic delta C-13 in the British Isles during the last glacial-Holocene transition (14-9 ka C-14 BP)

Bulk organic delta(13)C records are presented from five last glacial-Holoce ne transition lacustrine sequences (14-9 ka C-14 BP) on a north-south trans ect across the British Isles. The data confirm that bulk organic delta(13)C is an amalgam of processes operating within the catchment and lake systems . Significant shifts in bulk organic delta(13)C values are recorded across important climatic boundaries, though their synchroneity is questionable. E ither the shifts are not observed at the sites or they do not appear to be synchronous, suggesting that site-specific factors play an important role. Potential controls are discussed within the context of climatic change in t he North Atlantic region.