UKTC Archive

Re: Roots crossing river/water-course boundaries

Subject: Re: Roots crossing river/water-course boundaries
From: Michael Richardson
Date: Feb 22 2021 15:26:27
Perhaps this article may have some references that are useful to you.

https://www.researchgate.net/publication/229468709_The_Distribution_and_Strength_of_Riparian_Tree_Roots_in_Relation_to_Riverbank_Reinforcement


Michael Richardson B.Sc.F., BCMA
Ontario MTCU Qualified Arborist
Richardson Tree Care
Richardsontreecare.ca
613-475-2877
800-769-9183

  <http://www.richardsontreecare.ca/images/Tree_Doc_logo_email.png>



On Mon, Feb 22, 2021 at 10:16 AM Brynley Andrews <brynley.andrews@xxxxxx.com>
wrote:

Hi Rupert
That’s great thanks. There’s No hard science on the subject so it seems.
Thanks
Bryn

On Mon, 22 Feb 2021 at 13:29, Rupert Baker <rupert_baker@xxxxxxxx.co.uk>
wrote:

Hi Brynley,
I recall Jeremy Barrell stating at a workshop (down in Cornwall couple of
yrs ago IIRC) that tree roots didn’t cross watercourses/drainage ditches.
I do not know on what authority he said this.  I have no experimental
evidence, but would think that both species you mention have the
potential
to do so. I had a large mature Ash in my care years ago which grew with a
stream flowing either side of it - implying that its roots had bridged
across/underneath, since stability would otherwise have been an issue. As
well as any impetus to grow out as anchors (and I do not know how this is
'controlled' by a tree's internal systems)  It'll all be about the levels
of oxygenation of the water - as Wyne says - and perhaps whether, having
reached a supply of water, there is any impetus for roots to travel
further, if you see what I mean - it is common to see Alder & Willow
roots
exploiting water in stream edges.

Not a lot of use, but you could try asking Jeremy.

Atb
Rupert

-----Original Message-----
From: uktc-request@xxxxxx.tree-care.info On Behalf Of Brynley Andrews
Sent: 22 February 2021 09:21
To: UK Tree Care <uktc@xxxxxx.tree-care.info>
Subject: Roots crossing river/water-course boundaries

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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The UKTC forum is supported by Bosky Trees arboricultural consultancy and
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