A destructive summer thunderstorm swept through Madison, Wisc., recently, and
early the next morning you could hear the roar of chainsaws all over the neighborhood
as people cleaned up their yards. It was amazing to see the progress.
By late afternoon, huge brush piles lined the streets and even shredded green
leaves were raked up. The city was almost back to normal. Such pride in homes
and property is great to see, but it doesn't do well when applied to where fish
and wildlife live.
Picture a wilderness lake in your mind and what do you see? Numerous logs lie
along the shore with their craggy limbs all green and mossy. Huge cedar trees
lean way out over the water, defying gravity and casting a shadow on the water.
Along the shore grows a bed of bulrush, their pencil-sized stems marching right
up to the shore. Lily pads grow nearby and under the surface lie unseen beds
of aquatic vegetation, their bright green swirls hiding the soft muck bottom.
The whole scene fairly reeks of fish--a large northern pike lives under the
log near the cedar. A school of perch dart under the lily pads. Farther up near
the bank, about 400 newly-hatched crappies, about one inch long, live in less
than three inches of water among the bulrush. A pack of six-inch largemouth
bass lurks nearly waiting for one of the nearly-transparent fingerlings to venture
out beyond the cover of the bulrush.
All these places where fish live are called habitat. The logs, the shady spot
under the cedar, the bulrush and the underwater weeds and a thousand other places
in the lake, provide food and hiding spots for two dozen different species of
fish, several species of frogs and numerous kinds of aquatic insects.
Now let's take a look at many of our lake's here in Wisconsin. All the logs
have been pulled out long ago because they might damage a propeller on an outboard
motor. The leaning cedars are gone and replaced with a white dock. The aquatic
vegetation has been pulled out and the mucky bottom covered with sand to make
a beach. Very little of anything can live on, or in, sand. The bulrush is gone
and a concrete wall extends two feet out in the lake. No crappies live here
because they can't hide from the bass--the bass are gone, too.
The lakeshore looks nice and neat, just like our pretty Wisconsin cities--but
nature has suffered fiercely. Many of these lakes have a serious lack of habitat
needed by fish during the first few weeks of their life. Just as city wildlife
needs a refuge or park to hide in, many of our lakes could use some "wild
shoreline" where limbs and logs lie in the water, where mucky bottoms grow
dragonfly nymphs and where calm, shallow water only inches deep warms quickly
in the sunshine, providing a safe sanctuary for all kinds of fragile creatures.
This is what fish managers mean by good habitat. Please think about that the
next time you have an urge to clear the aquatic vegetation or alter the shoreline
in front of your lakeshore home. And, when the next tree falls in the lake off
your property, maybe you could leave the chainsaw in the garage?