UKTC Archive

Re: Roots crossing river/water-course boundaries

Subject: Re: Roots crossing river/water-course boundaries
From: Brynley Andrews
Date: Feb 22 2021 10:57:33
Jerry - haha! good point. I hope so!!!


On Mon, 22 Feb 2021 at 10:51, Jerry Ross <trees@xxxxxxxxxx.co.uk> wrote:

IS there any hard science in relation to RPAs?!




On 22/02/2021 10:35, Brynley Andrews wrote:
Thanks Jerry
I expect there is plenty of anecdotal evidence - I'm after some hard
science in relation to RPA's. Beginning to look like trual excavations
will
be needed.
Meeting the developer today.
Thanks
Bryn

On Mon, 22 Feb 2021 at 10:27, Jerry Ross <trees@xxxxxxxxxx.co.uk> wrote:

Willows can sometimes be seen with masses of generally rather fleshy
roots in flowing water - if one gets a toehold in the opposite bank I
see no reason why it shouldn't take hold and carry on growing as the
soil conditions and the demands of the tree dictate.
What I do know is that I have observed roots, 25-35mm dim,  from a tree
(an oak, if my own fading memory serves; or was it even a beech??) that
were visible on the bed of a small brook (about 1-1.5m wide), passing
across to the other site and rooting into the opposite bank.
But much, I'm sure, will depend on the individual circumstances and
history of both the tree, the watercourse as well as the soil conditions
on both sides.



On 22/02/2021 09:45, Brynley Andrews wrote:
Hi Wayne
Thanks for the input. I am dealing with mature/veteran ash (F.
excelsior) &
Willow (S. fragilis).


On Mon, 22 Feb 2021 at 09:38, Wayne Tyson <wt750mv@xxxxxx.com> wrote:

Working from a fading memory, it all has to do with oxygen; whether or
not
a species evolved an ability to translocate oxygen. Maybe a search for
"tree translate oxygen" might turn up something. I can't do that right
now
. . .

Please report results. With which species are you dealing?

WT

On Mon, Feb 22, 2021 at 1:22 AM Brynley Andrews <
brynley.andrews@xxxxxx.com
wrote:

Good morning all

Just been considering the likely rooting radial extent of some mature
trees
on the other side of (but against) a water course boundary (stream)
about
1-2m wide. I do not recall reading any guidance on this and it seems
most
of the science relates to soil erosion and riparian habitats.

Anyone know of some quality guidance on the likely rooting extent
across/under watercourses.

Thanks

Bryn

--
Brynley M M Andrews MSc., C.Env., M.Arbor.A.
www.brynleyandrewsassociates.com
01935 XXXXXX
07970 XXXXXX



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To unsubscribe send mailto:uktc-unsubscribe@xxxxxx.tree-care.info

The UKTC forum is supported by Bosky Trees arboricultural consultancy and
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-- 
Brynley M M Andrews MSc., C.Env., M.Arbor.A.
www.brynleyandrewsassociates.com
01935 XXXXXX
07970 XXXXXX



-- 
The UK Tree Care mailing list
To unsubscribe send mailto:uktc-unsubscribe@xxxxxx.tree-care.info

The UKTC forum is supported by Bosky Trees arboricultural consultancy and
Stockholm Tree Pits
https://www.stockholmtreepits.co.uk