Like all forests, the Tropical Forest can be divided vertically into a number of layers, storeys or strata. The amount of sunlight, temperature and humidity vary from ground level to the tree tops, making each layer especially well suited to certain types of plants. For instance, orchids, which are epiphytic (meaning that they grow on trees) herbaceous plants, grow in the upper layers.

To find food or shelter, animals also choose the layer that best meets their needs. That doesn’t prevent them from visiting the other layers from time to time, though.

There are various ways of identifying these layers. Here is a simple three-level method useful for the Tropical Forest at the Montréal Biodôme.
Biodôme de Montréal

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