Succession

Question 1

Succession

Answer 1

a process of change in community composition and structure, usually towards the establishment of a stable ecosystem

Question 2

Nudation

Answer 2

development of bare sites with no organisms inhabiting the affected area.

Question 3

First stage of Primary Succession

Answer 3

Pioneer plants colonies arrive. They secrete organic acids which attack the rocky surface in the process of weather, allowing windblown dust particles to settle in cracks.

Question 4

Second stage of Primary Succession

Answer 4

As pioneer plants die and decompose, a thin layer of soil forms. Shallow soil, leading to moss growth. When they die, nutrient is attended to soil. Over time bacteria, fungi and invertebrates establish and form simple community

Question 5

third stage of Primary Succession

Answer 5

Early colonising plants are r-selected species. Typically have effective seed dispersal, rapid growth and rapid reproduction. Numbers usually die out when more competitive species move in

Question 6

4th stage of Primary Succession

Answer 6

New community forms: establishment of autotrophs, small herbivores, immigrant species from surrounding areas.