"9300-year old vegetation remnants found under receding glaciers in Northern Sweden show that the trees once grew where tundra exists today, meaning it was warmer.
A new Swedish publication titled New Presence Of Beaver (Castor fiber L) in the Scandes sustains warmer-than-present conditions and a patchily treed and rich mountainscape finds that trees once grew up to 700 meters above today’s current treeline in Northern Sweden.
... Over the past 120 years the climate has warmed, and so there’s been glacier and ice patch shrinkage.
This has unveiled earlier vegetation and life.
The concerned vegetational remnants that were found represent tree exclaves in ice-empty glacier cirques, the study says.
.. They age 9500-9300 cal. yr BP and are located 400-700 m above present-day tree lines.
... These exposed megafossil remnants represent former tree stands that were later on extirpated and entombed by snow and ice for many millennia.
At -0.6°C/100 m lapse rate, it means it was then over 3°C warmer than now in this region at a time when atmospheric CO2 concentrations were well below 300 ppm."