Douglas-fir trees in Scotland?

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#1)  Douglas-fir trees in Scotland?

Postby PAwildernessadvocate » Wed Jul 13, 2016 2:37 am

This past weekend I went to a tall ships festival in Fairport Harbor, Ohio to see the Draken Harald Hårfarge Viking longship, which had sailed across the North Atlantic Ocean this past spring to get to North America and the Great Lakes.

The Draken has a 79-foot mast hand-crafted from a Douglas-fir log. Doug-fir is of course native to westernmost North America but when I asked where they got theirs, the reply was that it came from Scotland.

I wonder how many Douglas-fir tree plantations there are in Scotland, and how big the biggest Scottish Doug-firs are now? I bet the one that was used for the Draken's mast was at least 100 feet tall.


               
                       
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#2)  Re: Douglas-fir trees in Scotland?

Postby Erik Danielsen » Wed Jul 13, 2016 2:21 pm

Well, the tallest tree in the UK is apparently a 217' tall Douglas Fir: http://www.bbc.com/news/uk-scotland-hig ... s-26729935

To my knowledge there are also some very impressive redwoods in the UK. It seems that the climate conditions there are much more favorable to western-NA conifers than eastern NA, where planted doug firs, redwoods, etc really don't seem to do so hot (with the seeming exception of Dawn Redwood). Frequent precipitation and mild winters, with plenty of fog, seem to be common factors between the two.
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#3)  Re: Douglas-fir trees in Scotland?

Postby Joe » Wed Jul 13, 2016 2:28 pm

I wonder if those Brits are using the "best practices" of NTS for height measurement? They list heights to a tenth of a foot.
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#4)  Re: Douglas-fir trees in Scotland?

Postby Erik Danielsen » Wed Jul 13, 2016 4:06 pm

Here's the organization's official page on tree measurement: http://www.treeregister.org/measuringtrees.shtml

In other words- nope.

MonumentalTrees does have records by Jeroen using Sine method to record a doug fir in the UK at 201' in 2011, though. http://www.monumentaltrees.com/en/heigh ... r/england/
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#5)  Re: Douglas-fir trees in Scotland?

Postby Jeroen Philippona » Wed Jul 13, 2016 5:06 pm

The record heights in the UK for Douglas Fir have been confirmed with laser using Sine method as well as with climbing with direct tape drop and are reliable.

Indeed the Website of  Tree Register of the British Isles gives not a lot of attention to the method of height measuring, but their most important measurers Owen Johnson, David Alderman and Rob Linley use laser rangefinders with Sine method.

The British Tree Register has a very large database with tree measurements from over 100.000 trees of many species, but it is open for members only.

Some tall trees in the UK see: http://www.monumentaltrees.com/en/gbr/hd1

Also, for the tallest record heights, the Tree Register has asked people like Michael Spraggon and others to climb trees with direct tape drop. In this way height records were measured for Douglas Fir as well as Grand Fir, Giand Sequoia, Coast Redwood, London Plane, European Beech and English Oak.

For species record heights in the UK see: http://www.monumentaltrees.com/en/heightrecords/gbr/ .

Indeed I have measured myself Douglas Fir of 64 metre / 210 ft in Wales and 61.3 m / 201 ft in SW England. The first one was climbed with tape drop by Michael Spraggon but has been felled after it had lost its top in a storm.

Tallest measured in Scotland is now 66.4 m / 217.8 ft, measured by Sine - laser as well as climbing with tape drop, see:  http://www.monumentaltrees.com/en/gbr/s ... ack/15298/  

In Wales at one location a tree has been measured this year of 68 m - 223 feet by Owen Johnson of the Tree Register as well as by Rob Linley (with a Nikon Forestry 550 laser). This is the tallest measured Douglas Fir in Europe for the moment.

For a map of Douglas fir heights measured by direct tape drop or laser (should all be with Sine method, although some of the users probably don't understand the mathematics of that method)  see: http://www.monumentaltrees.com/en/map/w ... ouglasfir/ . The measurements in Germany and France also have been measured by tape drop as well as Sine laser method. Among the measurers in Germany of course are Kouta R. and Karlheinz Brüne, who have contributed to this BBS.

For a map of heights of all tree species in Europe see: http://www.monumentaltrees.com/en/map/europe/
and for some species of the world, although this is far from complete, as we prefer measurers to put their records themselves at his website:
http://www.monumentaltrees.com/en/map/world/

Jeroen Philippona from the Netherlands, Europe

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#6)  Re: Douglas-fir trees in Scotland?

Postby Erik Danielsen » Fri Jul 15, 2016 11:16 am

Glad to hear there's a high standard of measurement being upheld by the field's prominent measurers! Hopefully in the future their website will be updated to mention Sine method alongside the methods that don't require a rangefinder, along with the relative merits of each.
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