Deserts are spreading across great tracts of Britain, yet few people seem to have noticed, and fewer still appear to care. It is one of those astonishing situations I keep encountering: in which vast, systemic problems – in this case, I believe, covering thousands of square kilometres – hide in plain sight.
Really?
I realise that many people, on reading that first sentence, will suspect I’ve finally flipped. Where, pray, are those rolling sand dunes or sere stony wastes? But there are many kinds of desert, and not all of them are dry. In fact, those spreading across Britain are clustered in the wettest places. Yet they harbour fewer species than some dry deserts do, and are just as hostile to humans. Another useful term is terrestrial dead zones.
A bit like the 'Guardian' break room, then?
What I’m talking about are the places now dominated by a single plant species, called Molinia caerulea or purple moor-grass. Over the past 50 years, it has swarmed across vast upland areas: in much of Wales, on Dartmoor, Exmoor, in the Pennines, Peak District, North York Moors, Yorkshire Dales and many parts of Scotland. Molinia wastes are dismal places, grey-brown for much of the year, in which only the wind moves. As I know from bitter experience, you can explore them all day and see scarcely a bird or even an insect.Not that you would wish to walk there. The grass forms high tussocks through which it is almost impossible to push.
Molinia challenges the definition of an invasive species. The term is supposed to refer only to non-native organisms. But while it has always been part of our upland flora, it appears to have spread further and faster than any introduced plant in the UK, and with greater ecological consequences.
Such as? Well, it’s hard to believe that it’s a dead zone entirely, as George claims, but then he is prone to exaggeration. Are there no remedies, aside from manual eradication? It seems there are:
Rewetting the land, by blocking drains and building bunds and perhaps, as one team is attempting, planting clumps of sphagnum moss among the grass, in order to restore the peat, seems to be the only means of reviving blanket mire. It also makes the land less prone to fire.
You know, don’t you, Reader, that there’s a ‘but’coming?
But anyone who wants to rewild upland ecosystems hits a wall of vested interests – mostly sheep farmers and grouse moor owners – who, like the commercial fishing sector, insist on doing the wrong thing until it destroys their own industry.
How handy that George can make one of his sworn enemies - people who enjoy a sport he detests - a culprit in this, his latest attempt to sow panic.
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