Tropical Rainforest Ecosystem (AQA GCSE Geography): Flashcards
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Location of tropical rainforests
Location of tropical rainforests
On and near the Earth's equator
Species diversity in tropical rainforests
Species diversity in tropical rainforests
Far more species than any other biome
% of Earth's surface covered by rainforests
% of Earth's surface covered by rainforests
Approximately 6%
Annual rainfall in tropical rainforests (mm)
Annual rainfall in tropical rainforests (mm)
About 2,000 mm per year
Temperature range in tropical rainforests (°C)
Temperature range in tropical rainforests (°C)
27 to 32°C
Why the equator is the hottest part of Earth
Why the equator is the hottest part of Earth
Sun's rays shine directly on the land and sea
Height of the emergent layer (m)
Height of the emergent layer (m)
Over 40 metres
Height of the canopy layer (m)
Height of the canopy layer (m)
30-45 metres
Which layer has most species
Which layer has most species
The canopy
Light % in the understory layer
Light % in the understory layer
2-15%
Light % on the forest floor
Light % on the forest floor
2%
Two functions of the canopy
Two functions of the canopy
Blocks out sun & intercepts rainfall
Emergent layer leaf adaptation
Emergent layer leaf adaptation
Small, waxy leaves to prevent drying out
Why plants grow slowly on forest floor
Why plants grow slowly on forest floor
Very little light (2%) reaches the floor