Nature Notebook

“Where are the fish?” This is a common question our students ask as they gaze upon the ponds covered by ice. The fish move to the deeper parts of the pond, where there is less chance of ice formation, and enter a state of torpor to conserve energy.

The torpor state has been described as being “not quite asleep but not fully awake, either.” The fish’s body temperature is reduced. Its metabolism is slowed. Its breathing and rate and other primary body functions are reduced.

During a mild winter, the fish just hang around waiting for spring. A hard or long winter, however, can prove fatal for the fish. If the pond completely ices over the supply of fresh oxygen is cut off. All the underwater plants and animals (including hibernators) must rely on a fixed oxygen supply. This supply continually diminishes throughout the winter and may be totally exhausted.

Join a Sarett Naturalist on a walk through the woods to find materials to create your own natural art including brushes and dyes at the Lavender Adventurers: Organic Art program, Sat., Feb. 3 from 1 – 3 p.m. Materials for making your own Valentine’s Day cards will be available. This outdoors group is partnered with Outcenter Southwest Michigan for the LGBTQ+ community and their allies. Cost is $15 for nonmembers.