Mosses contain tiny ecosystems powered by sunlight. An array of microscopic organisms from all walks of life can be found in moss.
Tardigrades, or water bears, are some of the coolest animals on the planet. They can survive some of the most extreme environments on Earth, and in space! Tardigrades eat algae, which are plentiful in mosses.
Bacteria in mosses are usually either photosynthetic or consume organic matter. They are important links in the food chain.
Algae are important sources of food for many organisms that live in mosses. Algae use photosynthesis and appear green due to the chlorophyll in their cells.
Ciliates are usually heterotrophs, which means they eat other organisms or other organic matter for food and energy. They often eat bacteria.
Rotifers are tiny animals that eat bacteria, algae, and other small cells.
Nematodes are tiny worms that feed on bacteria in the moss. They are very quick and can whip back and forth.
Tardigrades love to snack on algae. They have unique mouth parts that allow them to pierce cells and suck out the insides! They also have tiny legs, claws, and eyes.
Exploring a microscopic ecosystem requires a specialized tool for investigating the world of microbes. Fortunately today, there are many relatively low-cost options for home microscopy. I recommend purchasing a microscope that can magnify up to 400x. Often the ocular lens has a magnification (say 10x) and the objective lens has a magnification (usually 10x, 20x, 40x). Total magnification can be calculated by multiplying the magnification of each lens together.
I have put together a handy guide for using microscopy at home. Click the link below to access this guide.
Collect some moss from moist sunny spot. Place it into a plastic baggie or other container and add about a tablespoon of water. Squish the moss in the water a few times, then remove a few drops and place on a glass slide. VERY gently drop a glass cover slip on top of the water droplet. Careful not to squish here. If there is too much water, you can use a paper towel to absorb some water near the cover slip. Make sure the entire cover slip has water under it and there are no air bubbles. Place the slide on the microscope and follow the instructions in the microscopy guide to find your organisms!
Journey to the Microcosmos
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