The final phase of a project intended to create an open
corridor between two prairie areas has now been completed. What was once a vicious tangle of invasive
Autumn Olive and Multiflora Rose, now looks almost park-like. A finish mower and a couple of picnic tables
would make this a wonderful place to relax, but I have a different goal in
mind. My hopes are that this area will
convert to prairie vegetation and act as a pathway to allow organisms to move
freely between an existing prairie area to the upper right and a second to the
upper left. The only task left is to get
rid of the few large trees.
I’ve chosen to kill the trees in place by girdling and
applying herbicide. Girdling is the act
of removing a strip of living bark around the base of a tree. This essentially stops the transfer of energy
from the leaves to the roots. Girdling
alone will typically kill the top of the tree, but a forest of sprouts will
emerge below the point of the cut and the tree will grow on. To ensure the death of the entire tree, I
have applied a 41% solution of glyphosate to the exposed inner bark at the
lower part of the wound. There should be
no regrowth here.
The Allegheny Mound Ants that had been foraging up the tree
were slightly befuddled by the loss of their path to the ground. On some trees it took 15 minutes or more
before they finally crossed the gap and went on their way. These ants can be found on every tree in the
more open areas of Blue Jay Barrens, but they do not go into the closed canopy
woods.
Girdled trees included some growing in the Winged Sumac
thicket. Eventually, shade from the
trees would have caused the death of the sumacs.
The dead trees should be a wonderful place for beetle larvae
and woodpeckers. Several of the trees
are large enough to accommodate nesting woodpeckers. Red-headed Woodpecker numbers have been
increasing in the area over the past few years and I’m hoping that dead trees
in a rather open setting might entice a pair to nest here.
Flowering Dogwood, Dwarf Sumac and a few oaks were left
alive. There are not enough of them to
impede the growth of prairie vegetation.
Presence of these three species is consistent with the type of prairie
typically found in this area and having them here is in keeping with the
management goals of the adjoining fields.
The leafless dead trees will not block enough sunlight to
slow expansion of prairie into the area.
In a few years, small limbs will begin to fall from the dead trees. Larger limbs will follow and eventually, the
trunks will come down. Everything should
be on the ground within ten years. What
happens to the fallen material will depend on how and where it falls. Some will be left on the ground to decompose
and some will be moved to facilitate future maintenance of the area.
This area to the west, just outside the trees, will be the
primary source of seed for colonizing prairie plants. Our prevailing wind is from the west and it’s
that wind that carries seeds into new territories. By the time the last tree falls, this area
should be healthy prairie.
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