20 Feb 2008, 5:04pm
Ecology
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Late Succession Is Eco-Babble Nonsense

by Mike Dubrasich

The horrendous megafires that are punishing our landscapes arise in what many call “late successional stands”. Government vegetation maps indicate that the most fire-prone areas are designated late successional. The government has incorporated the term late successional into our legal system. It is a land use class, much as commercial, industrial, or residential zones are designated on urban zoning maps.

Many forest scientists maintain that late succession is some sort of ecological state or condition. And not just any condition; late succession is the cat’s meow, the most treasured condition that forests can attain. We have shut down and locked up tens of millions of acres of our public forests because they are or soon will be (we hope) late successional. Nobody talks about old-growth anymore; the term of art is late successional.

It therefore behooves us to try to figure out what the heck “forest succession” is and when it becomes “late.”

But that is a fool’s errand, because forest succession is itself a bogus concept.

Ideally, in the eco-babble dream world, forests begin as bare ground, totally seared to the dirt, with nothing alive above ground. First “pioneer” plant species move in, followed by “settler” species, and eventually “climax” species take over.

That’s succession, a gradual change in species, particularly tree species, until a stable, “climax community” of plants is established and sets there, unchanged, for the rest of time.

It is similar to the succession of kings to a throne. The first king named Henry is Henry I. When he dies, another king succeeds him. And then that king dies, and somebody else succeeds him. Eventually, if enough time passes, you might see another King Henry, and then another, all the way up to Henry the Eighth or even more. Of course, no king lives forever, so no climax stable kinghood ever comes about.

That’s true in nature, too, obviously. No tree lives forever. The theory of forest succession accounts for that: the individual trees may die, but the species eventually stop changing, and that is the climax state. Of course, eventually and inevitably another disturbance occurs, and then the whole successional parade starts over.

The problem with the theory of forest succession is that it does not occur in nature. It is a phenomenon that occurs only in the minds of dreamers. The real world is quite different than that.

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