Field of Science

Showing posts with label value of trees. Show all posts
Showing posts with label value of trees. Show all posts

Frightfully Beautiful Destruction

This morning dawned to the frightfully beautiful destruction of an ice storm here in Lincolnland. No one can deny the beauty of a glistening, glassy, but very brittle world. It's a wonderland of light with a clacking and cracklely sound. But the destruction wrought by this beautiful sight is so very sad for us tree people. We get emotionally invested in nurturing a tree into an aesthetic component of our gardens and lawns, and the destruction of trees is a real loss not the least of all because a tree that has grown for many years cannot just be replaced. The value and beauty added by time has been lost.

While trees are nearly immortal, they are unfortunately sessile behemoths of biomass and beauty and they cannot escape any environmental ravages that engulf them. Trees have perpetually juvenile tissues, meristems, and they essentially grow a new tree each year around and on top of the old ones.


But no matter how big or how small, wood, that remarkable stuff that trees build as both a vascular and support system, is only so strong. Wood is capable of withstanding some pretty remarkable loads, but the sudden application of a half-inch of ice can stress the support system beyond the breaking point.


Although not a large tree, this quite handsome Japanese maple was shattered beyond any hope of repair. All but one limb was ripped off by the icy weight. This tree had already survived the ravages of yard rats (squirrels), who gnawed off enough bark to nearly girdle the tree. And years later it survived a very late hard freeze that killed all the new foliage and limb growth. But it didn't escape the ice. This fall was its swan song, but who knew what was to befall it.
Decorum and decency, concepts mostly absent from the web, prevent me from posting an image of this maple's dismembered body. RIP Acer japonicum.


RIP Carolina Silverbell

Halesia tetraptera, the Carolina silverbell, is a quite elegant ornamental tree. The center of the maize and soybean desert is quite a bit north of its native range, but a rather large specimen was growing on the east side of Williams Hall when I arrived on this campus some 30 years ago.

I am officially in mourning for this tree, and it died needlessly. This area was turned into a pedestrian mall several years ago, an attractive alternative to a city street that used to cut through campus. However, a 2-foot tall wall was built around this area, and then soil was added to raise the level of the bed. You wouldn't think it would matter, but for many trees, burying the roots is a sure means of killing the tree. Even before the soil was added I pointed out that burying the roots would kill the silverbell tree, but it was too expensive to seek a solution. Boy, you hate to say "I told you so", but I did.

Now you may take the attitude that it's only a tree, but this one was at least 60 years old, of substantial size for its species, and it's an unusal and very ornamental species to boot. Not only that but this campus is an official arboretum, which is supposed to show some interest in the tree collection. For this species of tree of this size, in an arboretum, the value calculated to be $25,500, not to mention the cost of cutting it down. For a fraction of that cost, a reverse wall could have been built, and the raised bed reduced in size, re-engineered for the sake of the silverbell. But "it cost too much" then. Well, what's the cost now? And how long will it take to get something as nice and as big to look at? Trees like that can not be bought, they can only be grown, and that takes time. We need to show some respect for our woody elders.

Wonder if I can get the campus to fly the flags at half-mast?