http://techalive.mtu.edu/meec/module11/FireandJackPine.htm
"New jack pine seedlings grow well after a hot fire. Fire causes the cone
of an older jack pine tree to open up and release seeds. Cones that need
heat, such as the heat from fire, in order to open are called serotinous
cones <http://techalive.mtu.edu/meec/module11/glossary.htm#cones>. When the
heat causes the cones to open, seeds are released and fall to the ground
(see animation below).
In Michigan, the Department of Natural Resources (DNR) lights fires in the
Jack Pine Ecosystems to help new jack pine trees grow. This is because the
Kirtland's Warbler will only build nests under the young jack pine trees."
On Tue, Jun 4, 2013 at 11:54 PM, Max <meadedil...@bellsouth.net> wrote:
Oak trees thrive on natural fires. keeps competitors away. Also
makes acorns grow.
Longleaf pine stays small and grows a huge taproot for several years
to survive fire. When the tap root is 8-10 feet deep, it shoots up
over 6' in a season to reach high enough so as not to be dameged by
most natural fires.
Controlled burns are good for prairies, oak savannahs and many other
forest types. They simulate natural fires.
Burning off grass or pastureland in the fall is a good thing too.
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