Now for the dirtier side of nature. Pretty much every
living thing on this planet exists to be someone else’s meal. If you’re unlucky
enough to become lunch, the next step is you become poop. No one likes to talk
about it, look at it, or smell it. Even though it’s gross, it’s an essential
element of the environment for a couple of reasons.
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Raccoon scat |
The most important function of poop, or scat as we
call it in the science world, is a key role in the nutrient cycle. Every living
thing needs an assortment of minerals in order to function properly. Minerals
are absorbed from the soil by plants, then absorbed by herbivores that eat
those plants, then absorbed by various levels of carnivores up through the food
chain. Some minerals are present in the ground in rocks; others are returned to
the soil through decaying organic matter (plant or animal) or through scat.
Another important impact scat has on the environment
is negative, and it goes beyond getting on your shoe. Nitrates and phosphates
are common in scat, and also happen to be active ingredients in fertilizer.
Excessive nitrates and phosphates in storm runoff causes high nutrient levels
in lakes, streams, and even the ocean. Those high levels can cause an overgrowth
of algae. Too much algae, even though it produces oxygen, can cause dead zones
of little to no oxygen when the algae dies and decomposers feasting on it suck
all the oxygen out of the water.
A third way scat is important is as a research tool. It
allows people like myself who rarely observe animals in the wild to see what
animals have been down the trail before. DNA samples can be pulled from scat,
and population biologists can estimate population by counting turds. Ecologists
can study an animal’s dietary habits from looking at scat.
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The coyote that dropped this deuce ate a bird |
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Deer scat |
Now that you’ve seen the usefulness of animal scats,
maybe you will look at it in a whole new light on your next foray into the
woods. Like anything else in nature (except maybe spiders), if you can overcome
your aversion, you can learn to appreciate it.
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