Spruce – an ice age survivor ?
by Chris, 30 March, 2012, 0 comments
There have been many ice ages in the history of the Earth; but the last, which covered vast tracks of the Northern Hemisphere, came to an end some nine to ten thousand years ago – when the temperature (and sea level) rose. It has always been assumed that no trees survived in the regions covered by the thick ice sheet, and that trees (like other plants) have returned to areas like Scandinavia by the gradual northern migration of species that had taken ‘sanctuary’ in warmer latitudes.
However, recently work has been undertaken by Read more...
