"...IT'S WHO YOU KNOW IN THE BUSINESS"
Aldo Leopold, the patron saint of environmentalists, wrote that much
of a person's appreciation for an area and its creatures stems from what
the person knows about them. It is not so much the area of the creature
itself which evokes fond feelings, you see--it's the unseen facts. For
example, the fact that Mt. Rainier is a volcano adds appreciably to the
big hill's mystique.
But tidbits of fact about far smaller things enhance our pleasure
also. Mt. Rainier, for instance, is home to both Lewis's Woodpecker and Clark's
Nutcracker. Yes, that Lewis and that Clark. Stop and think:
When you drag an expedition the size of Lewis and Clark's through
that much hinterland, you cannot go about glibly collecting every little
trinket that meets your eye. You'd sooner be up to your ears in dunnage
that weighs a ton and serves no practical use. And yet, they did bring
back study skins of both the unique pink woodpecker and the gaudy
nutcracker. The study skins, collected on the westward journey, traveled
thousands of miles across half a continent and back again. They
journeyed east to Philadelphia. There the founding father of
ornithology, Alexander Wilson, introduced the birds to the world in his
nine-volume classic, American Ornithology (1805-1814).
But even if you don't know all that, you can appreciate Clark's
Nutcracker and Lewis's Woodpecker simply for what they are--unique
strands in the living web a around Mt. Rainier.
Sandy Dengler
BANANA SLUGS OF THE NORTHWEST
The banana slug (Ariolimax columbianus) is the Pacific Northwest's
only native slug. Most people tend to overlook the seemingly mundane
life of the banana slug found in and around Mt. Rainier National Park.
The banana slug actually leads a rather unusual and exciting life being
a cannibal at times and also a hermaphrodite at other times.
Banana Slugs belong to the mollusk family. Their life span is from
one to three years, but they can live up to seven years. They can grow
up to twelve inches long and up to a quarter of a pound in weight. The
banana slugs' coloring ranges from slate green to yellowish with black
splotches mixed in.
Locomotion is accomplished by expending a mucus substance from their
head area that is both sticky at times and slick at other times. They
move from the rear end first in waves of constrictions and expansions
reaching speeds up to .007 miles per hour.
Not being water-proof can be one of the banana slugs' biggest
problems. They have no way to control the water coming into their bodies
and thus are capable of drowning. On the other hand, if they don't have
enough percentage of water in their bodies they will die. So banana
slugs tend to be most active at dusk and dawn when humidity is around
100%.
The Northwest's native banana slugs are "laid-back relatively
innocuous creatures" when compared to introduced species of slugs,
according to Dr. Ingrith Olsen, a Washington Zoologist interested in
slugs. Their diet can at times consist of anything from each other to
animal scats, but usually would include native herbs, lichens,
mushrooms, and ripe fruit.
Banana slugs have a very elaborate courting and mating ritual which
may last up to 36 hours! Banana slugs start life out as males and then
switch later on. If there is no male around to fertilize the female's 50-75 pea
sized eggs she is fully capable of doing it herself.
As a whole, the slugs' main problem is that they are being pushed
into a smaller area both by the more aggressive exotic species of slugs
and by man's increasing urban expansion which greatly reduces their
habitat. So this laid-back interesting native mollusk unfortunately has
the possibility of extinction in its future.
Evony Smith