Tropical rainforest features (Edexcel GCSE Geography A): Flashcards
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Practise the cards
13 cards from this deck
% Earth surface vs % species in tropical rainforests
% Earth surface vs % species in tropical rainforests
<2% surface, >50% species
Biotic factors
Biotic factors
Living organisms in ecosystem
Abiotic factors
Abiotic factors
Non-living physical & chemical elements
Most important abiotic factor in tropical rainforests
Most important abiotic factor in tropical rainforests
Climate
Temperature range in tropical rainforests
Temperature range in tropical rainforests
20-28°C year-round
Annual rainfall in tropical rainforests
Annual rainfall in tropical rainforests
Exceeds 2000mm
Leaching process
Leaching process
Water carries nutrients away from root zone
Nutrient status of tropical rainforest soils
Nutrient status of tropical rainforest soils
Nutrient-poor (despite lush vegetation)
Three nutrient stores (Gersmehl model)
Three nutrient stores (Gersmehl model)
Biomass, litter, soil
Largest nutrient store in tropical rainforests
Largest nutrient store in tropical rainforests
Biomass store
Uptake pathway direction
Uptake pathway direction
Soil to biomass
Cause of rapid nutrient cycling in tropical rainforests
Cause of rapid nutrient cycling in tropical rainforests
Year-round growth + rapid decomposition (warm/wet)
How indigenous people maintain biodiversity
How indigenous people maintain biodiversity
Seed dispersal from consumed fruit/nuts