Tropical Rainforest Ecosystem (OCR GCSE Geography A (Geographical Themes)): Flashcards
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Where tropical rainforests are found
Where tropical rainforests are found
On and near the Earth's equator
Species diversity in tropical rainforests vs other biomes
Species diversity in tropical rainforests vs other biomes
Far more species than any other biome
% of Earth's surface covered by tropical rainforest
% of Earth's surface covered by tropical rainforest
Approximately 6%
Annual rainfall in tropical rainforest (mm)
Annual rainfall in tropical rainforest (mm)
2,000 mm per year
Temperature range in tropical rainforest (°C)
Temperature range in tropical rainforest (°C)
27 to 32°C
Why it's hot at the equator
Why it's hot at the equator
Sun's rays shine directly on land and sea
Why tropical rainforests are wet
Why tropical rainforests are wet
Warm air rises, cools, water turns back into rain
Height of emergent layer (m)
Height of emergent layer (m)
Over 40 metres
Leaf adaptations in emergent layer
Leaf adaptations in emergent layer
Small, waxy leaves to prevent drying out
Height of canopy layer (m)
Height of canopy layer (m)
30-45 metres
Function of the canopy layer
Function of the canopy layer
Blocks sun from lower layers & intercepts rainfall
Which layer has most plant & animal species
Which layer has most plant & animal species
Canopy
Light level in understory (%)
Light level in understory (%)
2-15%
Light level on forest floor (%)
Light level on forest floor (%)
2%
What covers the forest floor
What covers the forest floor
Fallen leaves, rotting branches, shallow roots