introduction: General structure of the tropical rainforest
 
A short summary
The crowns of the trees form a distinct layered arrangement.

The highest level consists of scattered emergents which are 40-50m tall.

The middle layer consists of trees that are 20-30 m tall. The lower layer is made up of smaller trees with narrow crowns. The few trees per acre in this layer enjoy unfettered access to the sunlight.  Photosynthesis occurs mainly in this canopy, absorbing 90 percent of the sunlight that falls.   Since most of the sunlight do not reach this layer, this layer do not have much vegetation. 

 

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The tropical rainforest is madely mainly of the 3 layers, the emergent, canopy and understorey

section outlines:

Due to the hot and wet climate, there is dense and luxuriant vegetation.

The crowns of the trees form a distinct layered arrangement.

The highest level consists of scattered emergents which are 40-50m tall.

The middle layer consists of trees that are 20-30 m tall. Their crowns form a nearly continuous canopy which shields the sunlight from the forest floor.

The lower layer is made up of smaller trees with narrow crowns. These trees are 5-15m tall.

Emergent Layer

The few trees per acre in this layer enjoy unfettered access to the sunlight.  The method of seed dispersal of these trees are also diifferent from those found below,in the canopy layer, mainly maximising the use of wind.  This layer also has its own set of creatures living, very much different from those found below.  An example would be the harpy eagle and toucan.

+ Learn about the various bird species you can find in the emergent layer in the new section, Canopy Birds

Canopy layer

This layer looks more like a green carpet from above.  Photosynthesis occurs mainly in this canopy, absorbing 90 percent of the sunlight that falls.  Butterflies and mammals such as the sloth roam this layer.   Productivity here is also the highest due to the high level of photosynthesis.   around 25-30 tonnes of new growth per acre, twice as much as a temperate oak forest.

Understorey

Since most of the sunlight do not reach this layer, this layer do not have much vegetation.  Life is much harder here, as organism fight for their share of sunlight and raw materials.  The temperature here is lower and humidity is higher.

+ visit the section on rainforest floor to know more about the fauna species that can be found there