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| | Björn E. Gunnarson (Site not responding. Last check: 2007-11-05) |
 | | The occurrence and preservation of the trees were proposed to be a result of regional humidity changes that changed the hydrological balance in the area from drier to wetter conditions. |
 | | The chronology spans from AD 1998 to 4868 BC, with two minor gaps at 1600 BC and AD 900 and one larger gap at 2900 BC. |
 | | Periods of lower lake levels were inferred at 4900-4800 BC, 3800-3600 BC, 3400-3250 BC, 2400-2200 BC, 2100-1800 BC, 1500-1100 BC, 900-800 BC, 400-100 BC, AD 50- 300 AD, 400-600, AD 900-1100, AD 1350-1500 and AD 1700-1800. |
| www.su.se /forskning/disputationer/spikblad/BjornGunnarsson.html (525 words) |
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