|CAVE ECOSYSTEMS||GEOGRAPHY-SCIENCE HOME||CAVE HOME|
Caves can be divided into three zones depending on how much light they receive: entrance, twilight and dark. Light is a major factor limiting the size of the food chains and webs in an ecosystem. Food chains show the flow of energy from sun to plants, which use light in photosynthesis to make food, which is then passed on to herbivores and carnivores. As the amount of light decreases, the amount of energy driving the food chain also decreases, the number and size of plants decreases and fewer numbers of animals can be supported.
Major factor limiting the size of food webs in caves.
|Riverina Environmental Education Centre|