Peatland Formation - Terrestrialization

Question 0

Organic matter production comes from internal lake production, such as

Answer 0

Algae, material falling into the lake such as leaves, and from organic matter or sediment carried in streams and rivers.

Question 1

Occurs when shallow lakes are gradually filled by the

Answer 1

Accumulation of organic matter deposited on the lake floor and from the advance of peatland vegetation from either side of the lake.

Question 2

Plants such as reeds and mosses can form a mat that

Answer 2

Floats on the lakes surface. This gradually thickens as leaves die and other plants grow on top.

Question 3

Quaking bog: formed when the thick mat on the

Answer 3

Lake surface becomes colonised by other plants.

Question 4

Kettle hole bogs: form when a block of ice left from a

Answer 4

Retreating glacier forms a deep hole which fills with water and then eventually peat.