A terrarium is a miniature ecosystem. By ecosystem I mean that it is a self-contained, self-sustaining environment, though much smaller and more controlled than in nature. Another word for this enclosed ecosystem is biome. Though miniature, it has all of the complex relationships found in nature (microorganisms; soil; water cycle; sunlight; and organic matter). Over time, a complete water cycle will develop. When water in the soil and between the rocks comes in contact with sunlight, the water evaporates, condenses on the walls of the container, and eventually falls down as droplets of rain, continuously watering and nourishing the plants. This cycle will continue as long as there is moisture and sunlight.
Setting things straight: A terrarium is a plant ecosystem, whereas a vivarium is a plant and animal ecosystem. This article will therefore focus on creating a self-contained plant ecosystem. Reptiles may be added to your terrarium, but will not be covered here.
Terrariums are easy to make, easy to maintain, and are quite beautiful and intriguing! Depending on the container, mixture of
controllingpollution ingredients, and plants, the terrarium can sustain itself for long periods of time--maybe even years!
Please see the bottom of the page for example photos of my terrariums.
http://www.youtube.com/watch?v=FKBVwX8dVhI
