UKTC Archive

Re: RE: RE: Statistical Risk vs Ecosystem Services - does this compute?

Subject: Re: RE: RE: Statistical Risk vs Ecosystem Services - does this compute?
From: Julian Morris
Date: Dec 06 2019 14:21:14
Must I name name? I think this is one of these situations where emotion is 
being inferred in its absence. I am totally chilled today, positively 
hypothermic.

Julian A. Morris - Professional Tree Services
jamtrees.co.uk  and  highhedgesscotland.com
0778 XXX XXXX - 0141 XXX XXXX


Sent: Friday, December 06, 2019 at 2:04 PM
From: "Jim Quaife" <jq@xxxxxxxxxxxxxxxxx.co.uk>
To: "UK Tree Care" <uktc@xxxxxx.tree-care.info>
Subject: RE: RE: Statistical Risk vs Ecosystem Services - does this compute?

For goodness sake relax Julian - it's a common turn of phrase and the 
military meaning is not the only one.  Why on earth do you imagine that 
anyone might be at war?
Chill out.
Jim

-----Original Message-----
From: uktc-request@xxxxxx.tree-care.info 
[mailto:uktc-request@xxxxxx.tree-care.info] On Behalf Of Julian Morris
Sent: 06 December 2019 13:24
To: UK Tree Care
Subject: Re: RE: Statistical Risk vs Ecosystem Services - does this compute?

Jim, I don't like the parapet analogy, we're not at war. I'd like to think 
we can all freely and frankly express and exchange ideas and opinions on 
UKTC without fear of hostility so that we collectively move towards better 
understanding and practise.

Julian A. Morris - Professional Tree Services
jamtrees.co.uk  and  highhedgesscotland.com
0778 XXX XXXX - 0141 XXX XXXX


Sent: Friday, December 06, 2019 at 11:42 AM
From: "Jim Quaife" <jq@xxxxxxxxxxxxxxxxx.co.uk>
To: "UK Tree Care" <uktc@xxxxxx.tree-care.info>
Subject: RE: Statistical Risk vs Ecosystem Services - does this compute?

Hi Chris,
I am grateful for your tongue-in-cheek response to my description of 
"random" in the world of statistics, which was merely to illustrate the 
difficulties of assessing amenity trees.
To have an average figure that you calculated is very helpful to provide 
sense of perspective.  You are not acting randomly, it is the 
consideration of tree accidents that is statistically random. (This, as I 
intimated, is something that I have only comparatively recently got my 
head around, having nattered to someone who is professionally involved 
with stats).
Overall as a general "yardstick" to use in policy terms the ratio you 
have produced is very interesting - you've done the research so I am in 
no position to comment one way or the other, but on the face of it, it 
seems reasonable - although given the extremely low occurrence of 
tree-related accidents perhaps it is too cautious?
How one might apply it to a single tree in any given intimate situation 
would I am sure prompt "debate".
We appreciate your work and it is never easy to stick one's head above 
the parapet!
Best,
Jim


-----Original Message-----
From: uktc-request@xxxxxx.tree-care.info 
[mailto:uktc-request@xxxxxx.tree-care.info] On Behalf Of Corder, Chris
Sent: 06 December 2019 11:18
To: UK Tree Care
Subject: Re: Statistical Risk vs Ecosystem Services - does this compute?

Cheers all, 

I think that thread got randomised! But thanks for thoughts on the matter.
In a long winded kind of way, I suppose I was wondering if my 
calculations show that trees are about 12.5 times more 'beneficial' than 
they are 'risky'
Other studies have cited 3:1 returns in terms of COST/Benefit (after 
about 40 years, off the top of my head).
I wonder whether these calculations show a return of 12:1 in terms of 
RISK/Benefit 
Am I on the right track?
Or am I acting randomly?

All the best, 
Chris 

Christopher Corder PDArb (RFS), BSc (Hons) in arboriculture, MArborA
Assistant Arboricultural Manager
Hampshire Highways 
Tel: 0300 XXX XXXX
Web: www.hants.gov.uk/roads
@Hantshighways

© Hampshire County Council 2017 | Disclaimer | Privacy Statement




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The UKTC is supported by Bosky Trees arboricultural consultancy
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