[Talk-GB] W3C Invitation

[SK53]

Ha, I'd knew Id get it wrong about which London Borough.

We dont always delete old data in OSM:
https://www.openstreetmap.org/node/2596723826

This is relevant because the Beech was felled because the root system had
been attacked by Meripilus giganteus (see
http://www.flickr.com/photos/mausboam/2821775219/ and
http://www.flickr.com/photos/mausboam/2857082532/ ) and any planting of
another Beech on the site is not a good idea. Another tree on this road has
gone from the same cause, and I at least one other is infected (council are
a lot less proactive about this than they were 6 years ago). I suspect that
the fungus spreads because the contractors who mow the verges aren't very
careful about how they mow close to the bole of these trees, and damage
exposed parts of the root system.

In practice I've been 'ticking off' this fungus at this location every year
since it was felled. See for example one record in FRDBBI
http://www.fieldmycology.net/FRDBI/FRDBIrecord.asp?strVC=56&strName=Meripilus+giganteus
.

So this illustrates another point about why tree data is needed.

Jerry


On 4 March 2014 18:37, Tom Chance <tom at acrewoods.net> wrote:

> Thanks for the additional info, Jerry.
>
> I know that councils and utility companies don't know where a lot of old
> pipes and cables are, but they must have started to retain details maps and
> data of these in the recent past?
>
> It was Southwark, not Lambeth, where I imported the trees, by the way.
> I've also helped out with various community tree surveys, and through my
> job at the Greater London Authority I have a decent overview of policy
> around trees including council/GLA/private surveys, data issues, planning
> policies, TPOs, amenity/ecosystems value, etc. I've not yet come across
> anything the GLA or councils do with trees data that we couldn't replicate
> in the OSM data model.
>
> Would others agree with Dan that the only way to have a system of stable
> URIs would be to have a specific tag for that?
>
> I imagine a further difficulty would be if they wanted to keep track of
> trees that have been cut down, where we would normally just delete the
> node. Councils also keep records of stumps, which would still have root
> systems.
>
> Regards,
> Tom
>
>
> On 4 March 2014 14:25, SK53 <sk53.osm at gmail.com> wrote:
>
>> I dont know that we've mapped any gas lines in the UK although IIRC
>> Helsinki is festooned with underground infrastructure on OSM. I resisted
>> mapping the local pipework when the gas main was replaced, although all the
>> coloured markings are still visible on the street. One thought is  this
>> area is that OSM infrastructure may provide a good base for a separate
>> shared database of such utlitity infrastructure.
>>
>> On trees, the most obvious UK example is Tom Chance's work with Lambeth
>> and importing the council's Tree Register. I think Tom was interested in
>> urban foraging, but there are plenty of other example uses: looking for
>> specific insects fungi or birds associated with specific trees; reporting
>> problems with trees (I've done this with Beech trees on the road infected
>> with the Giant Polypore fungus), and so on. Most councils should already
>> have complete Tree Registers for park, amenity and street trees. Typically
>> data are updated every 3 years as part of a standard condition assessment
>> for work planning (I have photos of signs on trees around North Cambridge
>> where trees have not made the cut here).
>>
>> It is not just local authorities. The National Trust has had two
>> expensive legal cases arising from fatalities caused by large trees
>> shedding boughs (at Dunham Massey and Felbrigg), so there is usually a
>> legal need to show that tree conditions are assessed regularly in places
>> accessible to the public.
>>
>> Nottingham University finally created a Tree Register this year, which
>> resulted in lots of inappropriate work on trees during the bird breeding
>> season because the condition report arrived in April. They have now put
>> inventory tags on their estate of 15,000 trees: I've only mapped a few<http://overpass-turbo.eu/s/2GA>,
>> but I know a local tree expert who has done lots of surveys out of his own
>> interests and has written tree guides to the University and several of the
>> council's parks. Incidentally at least some of the trees at Nottingham
>> University cost £5000 a pop: these are valuable assets to manage in their
>> own right.
>>
>> If it was the Tuesday I'd perhaps be prepared to talk, but I'm talking to
>> the QGIS User Group the day after, and the Monday is problematic
>> travelwise. Perhaps we can cook something up together for Tom to front up.
>>
>> Jerry
>>
>>
>> On 4 March 2014 08:33, Brian Prangle <bprangle at gmail.com> wrote:
>>
>>> Hi everyone
>>>
>>> We have an invitation from IBM to present at this meeting- suggested
>>> topic is below. Anyone up for this - either with the topic suggested or
>>> with a suitable alternative?
>>>
>>> Regards
>>>
>>> Brian
>>>
>>> A few weeks ago, we had a use case webinar with the CIO of the City of
>>> Palo Alto who told us about an local initiative to tag trees with lat/long,
>>> genus, size, etc.  During the call, we asked him if he also considered
>>> tagging the trees with URI's and of course he hadn't.  Following the call a
>>> colleague sent me an article about how tree roots often damage natural gas
>>> lines and lead to widespread gas leaks.  Methane is 20x more dangerous as a
>>> greenhouse gas than CO2, so gas leaks are a leading cause of global warming.
>>>
>>> We would like to find an openstreetmaps speaker who can talk about the
>>> value of mapping trees and gas lines, and many other things, with URI's.
>>>  Would you be able to discuss this?
>>>
>>> We will be meeting on March 31 and April 1 at IBM Southbank, and would
>>> love a presentation/discussion the morning or late afternoon of the 31st.
>>>  Would this topic and date fit?
>>>
>>> _______________________________________________
>>> Talk-GB mailing list
>>> Talk-GB at openstreetmap.org
>>> https://lists.openstreetmap.org/listinfo/talk-gb
>>>
>>>
>>
>> _______________________________________________
>> Talk-GB mailing list
>> Talk-GB at openstreetmap.org
>> https://lists.openstreetmap.org/listinfo/talk-gb
>>
>>
>
>
> --
> http://tom.acrewoods.net   http://twitter.com/tom_chance
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/talk-gb/attachments/20140304/e0ea667c/attachment-0001.html>