[Tagging] wetland=bog, why only "receive their water and nutrients from rainfall"?
penegal at live.fr
Mon Jan 25 11:00:27 UTC 2016
> From: chris_hormann at gmx.de
> To: tagging at openstreetmap.org
> Date: Sat, 23 Jan 2016 22:37:07 +0100
> Subject: Re: [Tagging] wetland=bog, why only "receive their water and nutrients from rainfall"?
> On Saturday 23 January 2016, David Marchal wrote:
> > I tagged some bogs today, and I wondered: why does the wiki restricts
> > bogs to "depressions that receive their water and nutrients from
> > rainfall"? AFAIK, bogs are not necessarily isolated from water
> > streams or bodies. Wikipedia talls about sloping bogs where running
> > water is intercepted in the soil by plants;
> There are of course all kind of boundary cases but the typical bog as
> common in many parts of northern Europe is rain fed. In German we have
> the more specific term 'Regenmoor' which indicates this. Mires fed by
> groundwater or water inflow from the outside are usually not bogs.
Ah, that can explain the difference in my interpretation: in French, bogs and fens are usually designated with the same word, "tourbière", which designates mires; this word is usually translated in English with "bog". To designate fens, we say "tourbière minérotrophe", but essentialy only specialists will know about this difference, most people will use "tourbière" for both fens and bogs. And now, I see my error: fens are modelled with a different "wetland=*" tagging, but, my language using essentially the same word for both, I stopped at the first occurence on the wiki page designating a mire, "wetland=bog", without understanding that the next one, "wetland=fen", designated exactly what I was looking for. The problem is the French translation of this page on the wiki, I'll correct it. Thanks for your answer.
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