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Willow Warbler

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  1. Thanks for all your responses. Anno, I will check out the Ancient Tree Forum. Steve and Gary: I am a little confused as it sounds like using an increment borer is a really frowned upon. I am aware you can get ones which are 20 inches long, so these would presumably deal with some species of tree which were planted about 70 years ago – as you have to twist them in just beyond the centre of the trunk before extracting the core. I am aware that they are also used for detecting rot, however, this is on the Royal Forestry Society’s website: ‘Foresters have a clever way of ageing a tree without cutting it down. They use an ‘increment borer’ to take a core sample – about the width of a pencil – from the inside of a living tree. The core is then carefully extracted and the annual rings counted. The hole is then plugged again to protect the tree.’ ‘The RFS is the largest and longest established education charity promoting the wise management of woods in England, Wales and Northern Ireland. Our mission is to inspire passion and excellence in woodland management. We do this through education and knowledge-sharing, which have been at the heart of the RFS ethos since its foundation in 1882.’ Adam and Chris: The landowner is not keen on getting the LA involved for fear of them slapping a Woodland TPO on the land, as there is currently only an Area TPO for the trees which existed in 1950. Does anyone have any experience of this happening? Presumably a Woodland TPO saves the LA the headache of cataloguing individual trees…
  2. When dealing with an Area TPO covering trees planted before 1950, how specifically can you be expected to identify the age of the trees concerned? Some have very evidently taken root long after this date, however there are others I am not so sure about. How acceptable is it to use an increment borer for those borderline ones? Or will estimates just have to be made from girth measurements/average growth rates?

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