I'm not really suggesting replacing the tag, I just want to make it easier to find lowland heath.
For now these 2 pages by Alan Silverside (Uni of West Scotland) provide lots of good illustrations (names are still botanical though): - Heathland 1: http://bioref.lastdragon.org/habitats/Heathlands1.html - Heathlands 2: http://bioref.lastdragon.org/habitats/Heathlands2.html Good examples of Acid Heath (D1.1 in Phase1) from Wales which may be familiar: - South Stack, Holy Island, Anglesey - Yr Eifl & Mynydd Rhiw on Llyn - Rhinogs around Cwm Bychan (but not S part of range from Y Llethr towards Barmouth - Hills around World's End (N of Llangollen) - Much of Tryfan and the land to the S around Bwlch Tryfan - Moel Meirch (NW of Cnicht & S of Nant Gwynant) - Mynydd Mawr - Black Mountains S of Hay Bluff - Gray Hill, Gwent - Presellis - Radnor Forest and hills to S (SW of Gladestry) Of these areas Mynydd Rhiw and the S Rhinogs offer good examples of this heath in a mosaic with grassland. Basic Dry Heath (D.1.2) is very rare in Wales. Damp Heath (D.2): - E side of the Rhinogs S of Coed y Brenin forestry - On the Migneint S of Ysbyty Ifan - A small patch SW of Sennybridge (Fforest Fawr), much of the rest a mosaic with grassland - Several patches on the S side of the Carneddau overlooking the A5 Lichen Heath (D.3) - Summits of the Glyderau Montane Heath (D.4) None in the Welsh dataset Mosaics (D.5 & D.6), see above where some have been noted under the core-heathland type. Now I need to find more useful pics of these sites. Jerry On 25 September 2017 at 14:53, Andy Townsend <ajt1...@gmail.com> wrote: > On 25/09/2017 13:36, SK53 wrote: > > When this thread first started I thought we could work to remove these > multiple meanings, but having seen what places with natural=heath from > Corine imported-data in the Cevennes, suspect that this is an unrealistic > objective. > > > Well just because one bad import used "Tag A" is not necessarily a reason > to not use "Tag A" elsewhere. If we did that we'd never use > highway=residential post-TIGER :) > > The alternatives are to start sub-typing natural=heath, with heath or > heath:type. The main category to identify in the short-term are the classic > lowland heaths which are scarce & threatened in the UK. > > Wikipedia has a partial tabulation > <https://en.wikipedia.org/wiki/Heaths_in_the_British_National_Vegetation_Classification_system> > of the formal heath categories in the National Vegetation Classification, > which may help as background reading. I'm sure that pretty much all > communities in the U-group (calcifugous grassland & montane), several Mires > (e.g., M15 & M16), and even some calcicolous upland grasslands are included > in current natural=heath. > > At a more practical level the JNCC Phase 1 > <http://jncc.defra.gov.uk/PDF/pub10_handbookforphase1habitatsurvey.pdf> > guide recognises 6 heath categories, of which 4 are relatively common: wet > & dry heaths, and their respective mosaics with grassland. Anything where > the peat depth in the soil is NOT regarded as a heath, but will be a Mire > community (pennine moorland will be largely blanket bog in this > terminology). > > Both NVC <https://wiki.openstreetmap.org/wiki/Key:plant_community> & > Phase1 <https://wiki.openstreetmap.org/wiki/Proposed_features/Key:habitat> > have relevant pages on the wiki for (slightly) further info. NVC is clearly > far too technical for just about everyone, but Phase1 is probably usable > with a small bit of guidance. > > Probably the best way to take this forward is to compile good examples of > places people are likely to know (particularly in National Parks) which > have a known classification AND a reasonable number of usable images on > Geograph. Wales is the easiest place to do this because the whole of the > country was mapped using Phase1. > > > What would be useful to me would be to know what questions I should be > asking myself to allow something tagged sensibly down the line? Can they > be reduced from the 11 pages in "pub10_handbookforphase1habitatsurvey.pdf" > that you linked to and phrased in ways that I could actually understand > ("Ulex europaeus, Cytisus scoparius and Juniperus communis scrub" is > something that would make Oleksiy in the Latin "talk@" thread very happy, > but it's all greek to me!)? > > Best Regards, > > Andy > > > > _______________________________________________ > Talk-GB mailing list > Talk-GB@openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk-gb > >
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