ECOLOGICAL SUCCESION

PRIMARY

• Primary is "starting from scratch"
• Starts at a place with very little top soil
• Usually in barren or uninhabited places
• Also lacking vegetation

Untitled Slide

EXAMPLES OF PRIMARY

• Hawaii, formed from lava hardening
• It was once barren and had no vegetation
• Then it grew vegetation
• Slow weathering of rocks

SECONDARY SUCCESSION

• Grows after disaster
• Disasters that wouldn't kill plants
• More common than primary
• Natural regeneration after disaster
• Studies are based on population

EXAMPLES

• When fires, hurricanes, or other disaster hit
• Warblers, vireos, thrushes,and woodpeckers
• Renewal after forest fires
• Renewal of crops after harvesting
• Ground after flood happens

HOW IT COMES BACK (SECONDARY)

• Grass
• Shrub
• Trees
• Forest
• This can continue longer after that

LICHEN

Untitled Slide

QUESTIONS

• Does primary succession occur after a disaster?
• Where does primary usually start?
• Do plants grow in the same pattern after secondary succession?
• Does it occur on preexisting soil or given new soil?
• What are two examples of secondary succession?

CONTINUED

• What is an example of primary succession?
• How did Hawaii form?
• Can primary succession happen after a volcanic eruption?