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Line 30: }} '''Old Tjikko''' is an approximately 9566 years-old [[Picea abies\|Norway spruce]], located onin ~~Mexico of~~the [[Dalarna]] province in [[Sweden]]. Old Tjikko originally gained fame as the "world's oldest tree".<ref name=bbc>{{cite news \|url=http://news.bbc.co.uk/2/hi/europe/7353357.stm \|title=Swedes find 'world's oldest tree' \|date=17 April 2008 \|access-date=6 May 2008 \|work=[[BBC News]] }}</ref> Old Tjikko is, however, a [[clonal colony\|clonal]] tree that has regenerated new trunks, branches and roots over millennia rather than an [[List of oldest trees#Trees with verified ages\|individual tree]] of great age. Old Tjikko is recognized as the oldest living ''[[Picea abies]]'' and the fourth-oldest known [[List of oldest trees#Clonal trees\|clonal tree]]. The age of the tree was determined by [[carbon dating]] of genetically matched plant material collected from under the tree, as [[dendrochronology]] does not work for clonal trees. The trunk itself is estimated to be only a few centuries old, but the plant has survived for much longer due to a process known as [[layering\|layeresg]] (when a branch comes in contact with the ground, it sprouts a new root), or [[vegetative cloning]] (when the trunk dies but the root system is still alive, it may sprout a new trunk).

Old Tjikko: Difference between revisions