Part of a tree trunk lying on the ground is a perfectly
natural occurrence. Having that piece of
wood display the clean cut of a chain saw somehow makes it appear quite
unnatural. Regardless of its method of
arrival, it behaves naturally enough during its process of decomposition and no
wild creature is going to fault it for succumbing to the power of the saw.
This exposure does give an interesting look at the pattern
of decomposition inside the section of trunk.
I wonder what it was about that particular band that made it so
susceptible to decomposition. The center
section is always the most rot resistant portion of the log. In a fresh cut specimen, this part is colored
red. The outside shell retains moisture
for only short periods at a time, so decomposes more slowly than the deeper
wood that holds on to its moisture. I’ve
seen this same decomposition pattern on whole logs, but it’s odd that the end portion
that has been fully exposed to the elements for the past 30 years doesn’t show
a different pattern from that further into the section.
A loose section is easily removed to reveal the compost that
resulted from decomposition. It looks
like some mighty rich material that would provide plenty of nutrients to a
plant that was able to tap the bounty.
It might be several more decades before the outside layer of wood
finally reaches the point where the log crumbles to the ground.
Mosses and lichens form a thick cover over much of the
wood. The mat gives the appearance of
harboring a variety of species.
It sometimes takes decades for moss and lichen colonies such
as these to develop. The resistance to
decomposition displayed by Eastern Red Cedars makes it reasonable to expect
large fallen cedar logs to provide a secure base for 50 to 100 or more
years. Old colonies utilize every bit of
space available on the log and continually grow more complex with the passing
years. The various forms of life
utilizing the section of cedar trunk are performing perfectly natural
functions. I guess it’s just my personal
bias that puts a note of artificiality to the whole affair just because I can
see a human inflicted cut on the surface of the wood.
I love this post!
ReplyDeleteFascinating. I'm surprised it would take so long to decompose.
ReplyDeleteThanks Susannah.
ReplyDeleteHi Lois. The fragrant cedar oils which are most concentrated in the red heartwood, inhibit decomposition and repel many insects. Those oils are what make cedar chests effective guardians against insect pests.