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Thread: The Oak Tree Appreciation Thread.

  1. #11
    AstroPlumber arcticwolf's Avatar
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    Quote Originally Posted by Contra Mundum View Post
    Oaks are an obsession in Mobile, Alabama.

    Some streets need to be widened to accommodate growing traffic, but the city will not permit any tree cutting.


    I don't live in the coastal area anymore unfortunately, and Live Oaks adorned with Spanish Moss is what I miss the most. Live Oaks are the work of art, nature's masterpiece. The city is right, without these oaks it would lose 90% of it's charm.

  2. #12
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    We have two species of oak native to Britain - Quercus robur "English Oak" which is native to the east and Quercus petrea "Welsh Oak" native to the west.


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    AstroPlumber arcticwolf's Avatar
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    The famous Cork Oak from South Western Europe.


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    I know I keep mentioning things other than oak, but I do think we really need to put more effort into bringing back English Elms here.
    They're clones of Field Elm that is found throughout Southern Europe as far as Northern France (I'm not sure if it's native to England or introduced). The English Elms appear to be cloned from a single specimen that may have been from Italy and ultimately from Turkey and was spread here with the Romans for vine poles.

    They're amongst the fastest growing trees in Europe but once infected with the disease they don't live beyond 20 years. They used to be a well known feature of our landscape and grew at field edges. 25 million of them were wiped out. Oak and Ash mostly took their place.
    It's a shame, they such beautiful trees.







    But someone's found English Elm which appear to be resistant has spent £60,000 of his own money developing it into a disease-resistant variety. A few English Elms were found growing around others which had died due to the disease but never suffered from it.

    It can take just one 5mm bark beetle to kill an elm. Each beetle carries up to 500,000 fungal spores and it takes up to three years for a mature elm to be killed by the disease.
    A disease-free elm can reach 120ft and live for 400 years.

    ...

    'But as we worked in this particular area, we noticed there were a few trees which seemed to be resistant to the disease. While other trees around them died, these were totally unharmed.
    'After about ten years, they were still surviving while every other tree in the area had died and we knew they must be resistant. An expert took cuttings from one of the mature trees for me, which survived - and then kept surviving.
    'The trees we have propagated are all still in full leaf, even though there is Dutch elm disease in the hedges just metres from them.'

    Mr King, who sells six-year-old 10ft trees for £120 each at the Tree Nursery in Rayne, Essex, added: 'We think these elms are not attractive to the elm beetle.
    For some reason they don't like to feed from these trees. Other people are trying to do similar things, and one tree has been imported from America, but it is important to reintroduce the traditional English elm.'
    Alan Power, a National Trust gardener at Stourhead in Wiltshire, said: 'It's fantastic that a mature tree has survived. The fact that the cuttings have come from the original elm is brilliant.
    'It would be wonderful to see the native English elms back in the countryside again.'
    source...

    So it seems it isn't resistant to the disease itself, rather it is unattractive to the pest that carries it.
    However I think resistance to the disease itself must be developed to because insects evolve fast and into many subspecies in order to take advantage of differences in plants and conditions. I think it's only a matter of time until that beetle evolves to feed on those specimens.

    I think we need to search for resistant Field Elms, the species they're cloned from and breed hybrids to have the resistance of the Field Elm but looks of the English Elm.

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    AstroPlumber arcticwolf's Avatar
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    Quote Originally Posted by Albion View Post

    So it seems it isn't resistant to the disease itself, rather it is unattractive to the pest that carries it.
    However I think resistance to the disease itself must be developed to because insects evolve fast and into many subspecies in order to take advantage of differences in plants and conditions. I think it's only a matter of time until that beetle evolves to feed on those specimens.

    I think we need to search for resistant Field Elms, the species they're cloned from and breed hybrids to have the resistance of the Field Elm but looks of the English Elm.
    In the USA the privately and government founded research has been going on for a couple of decades now. It's still far from over. I agree with you we must do all we can and then more to preserve those magnificent trees. Thankfully there are a lot of people working full time on this project and people are volunteering their time and expertise to save the Elms. It's so sad to see Elm Street with no elms.

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    Veteran Member Veneda's Avatar
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    Oak ‘Bartek’, the best known Polish oak

    Legend says that Polish kings: Boleslaw I the Brave, Wladyslaw II Jagiello and Stanislaw II August Poniatowski would rest in its shade. King Jan III Sobieski allegedly hid treasure under the oak on his way back from the Battle of Vienna (1683).





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    AstroPlumber arcticwolf's Avatar
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    Thank you Veneda. As always, awesome post! 1200 years old, an ancient tree. What a marvel!

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    My Countship is not of this world Comte Arnau's Avatar
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    Quote Originally Posted by arcticwolf View Post
    The famous Cork Oak from South Western Europe.


    I had one near home when we were kids, and we were forced to chop it off because of the roots threatening the building.

    I'd say it's the only time in my life when I've felt really sad for a non-human/animal living being. As a kid, I had had a lot of interaction with that tree.
    < La Catalogne peut se passer de l'univers entier, et ses voisins ne peuvent se passer d'elle. > Voltaire

  9. #19
    Alma portuguesa Damião de Góis's Avatar
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    Oak trees in Portugal include:

    Quercus faginea (Carvalho)



    Quercus suber (Sobreiro)



    Quercus ilex (Azinheira)


  10. #20
    AstroPlumber arcticwolf's Avatar
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    Quote Originally Posted by Count Arnau View Post
    I had one near home when we were kids, and we were forced to chop it off because of the roots threatening the building.

    I'd say it's the only time in my life when I've felt really sad for a non-human/animal living being. As a kid, I had had a lot of interaction with that tree.
    I know what you mean, tornado destroyed one of my oaks. I was heart broken.

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