Pennsylvania Game News - July 2013 - 54
too, absorbed more carbon as they aged.
One of those researchers, Bev Law,
of Oregon State University, told a journalist, “Across forest types, globally, we
find that the amount of carbon stored
is high in older forests, and that live
carbon continues to accumulate for
centuries.” This carbon is held not only
in the trees themselves, but in their
fallen leaves and branches, as well as
in the fertile soil of old forests.
Law is director of the AmeriFlux
Network, an international collaborative project founded in 1996 to measure
the carbon dioxide, water vapor, and
energy in all kinds of major ecological community types or biomes in the
Americas. Using a variety of sophisticated tools, scientists are able to track
carbon in any ecosystem. Here in our
eastern forests, studies have been done
in several states including the aforementioned Massachusetts.
Old trees in an old forest have other
uses, too. They often provide cavities for a variety of
birds and
animals
that
54
use them for nesting and shelter. For
instance, sycamores are the most massive trees in the eastern United States.
They can grow more than 100 feet tall
and 10 feet wide and live up to 500
years. When they are very old, they
often have a cavity at ground level
that can be large enough to house a
maternity colony of up to 100 Indiana
bats, researchers have discovered.
Large, hollow trees also appeal to
children of a certain age. I was reminded of Jean Craighead George’s book My
Side of the Mountain, which my husband
Bruce read aloud to all of us when our
three sons were young. They were all
entranced by the 12-year-old hero of
the story, Sam Gribley’s large, hollow
tree home in the wilds of the Catskill
Mountains. It was a hemlock. Remembering the many old-growth hemlocks
we have or had, before the hemlock
woolly adelgids killed so many of them
in our Pennsylvania old-growth forests,
I knew that such trees might have been
large enough to house one young boy.
Because our old-growth hemlock
trees are mostly in Pennsylvania’s state
natural areas, the trees attacked by
adelgids have been allowed to die and
be reclaimed by the earth, as our son,
Dave, discovered during a recent
visit to Snyder-Middleswarth
Natural Area. Many people
find this wasteful, believing that such trees should
be harvested. But Dr.
Joan Maloof, who has
been writing and speaking about the value of
old-growth forests maintains that “old-growth
forests are one of the
few land uses where
topsoil is created
GAME NEWS
Pennsylvania Game News - July 2013
Table of Contents for the Digital Edition of Pennsylvania Game News - July 2013
Pennsylvania Game News - July 2013 - Cover1
Pennsylvania Game News - July 2013 - Cover2
Pennsylvania Game News - July 2013 - 1
Pennsylvania Game News - July 2013 - 2
Pennsylvania Game News - July 2013 - 3
Pennsylvania Game News - July 2013 - 4
Pennsylvania Game News - July 2013 - 5
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Pennsylvania Game News - July 2013 - 7
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Pennsylvania Game News - July 2013 - 28
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Pennsylvania Game News - July 2013 - 64
Pennsylvania Game News - July 2013 - 64a
Pennsylvania Game News - July 2013 - 64b
Pennsylvania Game News - July 2013 - Cover3
Pennsylvania Game News - July 2013 - Cover4
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