The Whistler Tree, also known as the Sobreiro Monumental, is a remarkable cork oak (*Quercus suber*) located in Águas de Moura, in the Alentejo region of Portugal. This tree is notable for being both the oldest and largest cork oak in the world, with an estimated age of 234 years, having been planted in 1783[1][3].
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Characteristics and Significance
- Height and Size: The Whistler Tree stands approximately 16.2 meters (53 feet) tall, with a trunk circumference of about 4.15 meters (14 feet)[3].
- Cork Production: Over its lifetime, the tree has been harvested more than twenty times. A particularly significant harvest occurred in 1991, yielding over 1,200 kg (2,646 lbs) of cork, enough to produce more than 100,000 cork stoppers[2][5]. In 2009, another harvest yielded 825 kg (1,818 lbs) of cork, highlighting its exceptional productivity compared to average cork oaks, which typically produce around 45 kg (100 lbs) per harvest[4].
- Ecological Role: The Whistler Tree plays a crucial role in its ecosystem, providing habitat for various species, including endangered ones like the Iberian lynx and the Iberian imperial eagle[2][5]. The tree's name is derived from the sounds of birds that inhabit its branches, further emphasizing its ecological importance.
Recognition and Conservation
The Whistler Tree was voted the **European Tree of the Year in 2018**, reflecting its cultural and environmental significance. It has been classified as a "Tree of Public Interest" since 1988 and is listed in the *Guinness Book of Records* as the largest cork oak globally[1][3].
In 2017, the Alentejo region, where the tree is located, was submitted to UNESCO for consideration as a World Heritage Site, which would enhance its conservation efforts and international recognition[2].
Cultural Importance of Cork
Cork has been utilized for centuries, with historical evidence showing its use by ancient Egyptians and Romans for various applications, including fishing gear and insulation[5]. Today, cork remains a vital material for numerous products, including wine stoppers, flooring, and even aerospace applications. The sustainable harvesting of cork does not harm the tree, allowing it to regenerate its bark for future harvests, thus supporting both the economy and biodiversity in the region[5].
The Whistler Tree stands as a testament to the ecological and cultural heritage of Portugal, symbolizing the importance of sustainable practices in forestry and conservation.
Citations:
[1] https://www.treeoftheyear.org/previous-years/2018/Svitorici-korkovy-dub
[2] https://thetreeographer.com/2018/01/10/portugals-prize-cork-oak-the-whistler-tree/
[3] https://en.wikipedia.org/wiki/Sobreiro_Monumental
[4] https://www.guinnessworldrecords.com/world-records/75147-largest-cork-tree
[5] https://www.premiumtours.pt/en/the-worlds-oldest-largest-cork-tree/