C2 Gersmehl Diagrams

The main nutrient store in rainforest is

• litter

• biomass

• soil

The main nutrient store in taiga is

• litter

• biomass

• soil

The main nutrient store in desert is

• litter

• biomass

• soil

The thickness of the arrows in a gersmehl diagram show:

• size of the sink

• rate of nutrient flow

The diameters of the circles in a gersmehl diagram show:

• size of the sink

• rate of nutrient flow

Which of the above represents a germehl diagram from a tropical rainforest?

• left

• middle

• right

Which of the above represents a germehl diagram from taiga?

• left

• middle

• right

Which of the above represents a germehl diagram from desert?

• left

• middle

• right

The diagram is gersmehl digram for the rainforest. Why is the arrow between the litter and soil thick?

• warm weather, high rainfall favours decomposition

• warm weather, low rainfall favours decomposition

• cool weather, high rainfall favours decomposition

• cool weather, low rainfall favours decomposition

Identify the processes represented by the arrows labelled A and B

• A is littering; B is leaching

• A is decomposition; B is run off.

• A is plant uptake; B is leaching

• A is run off; B is decomposition