Ecosystem Review

1
Ecosystem Review
2
Succession

• Succession replacement of one type of community
  by another over time.

3
Primary Succession

• Primary Successioncommunity growing in an area
  where organisms have never lived.
• Primary Succession starts with bare rock

4
Primary Succession

• The Wetland succession that you saw at camp is an
  example of primary succession.
• Jackson lake was formed by glaciers 12,000 years
  ago.
• Lake -gt Fen -gt Bog -gt Quaking Bog -gt Forest

5
Secondary Succession

• Secondary Succession a community growing in an
  area affected by a disturbance.
• Examples of disturbances are fire, flood,
  clearing land for farming or lumber.
• Secondary Succession starts with soil

6
Secondary Succession

• The Old Field succession you saw on the prairie
  walk is an example of secondary succession.
• Old Field -gt Hardwood Forest

7
Pioneer Species

• Pioneer Species are the first organisms to live
  in an area.
• Examples of Pioneer Species
• Old Field Bunch Grass, Milkweed, Queen Annes
  Lace
• Wetland Sphagnum Moss, Sedge, Pitcher Plant

8
Climax Species

• Climax Species well adapted species in a mature
  community
• Examples of Climax Species
• Old Field Maple, Oak
• Wetlands Maple, Oak

9
Duckweed Problem

• Duckweed can grow so thick it blocks sunlight
  from reaching plants growing at the bottom of the
  lake.
• These plants die and are decomposed by bacteria.
• The bacteria use up oxygen in the water, which
  limits aquatic life in the lake.

10
Carrying Capacity

• Carrying Capacity is the largest population an
  environment can support.
• Example When we were playing the food chain
  game, the carrying capacity was the greatest
  number individuals that were able to survive.

11
Limiting Factors

• Limiting factors are the factors that control
  carrying capacity (they limit the population /
  community size).
• Examples are sunlight, water, food, shelter,
  space

12
Competition

• Competition occurs when two or more individuals
  or populations try to use the same resource, such
  as food, water, shelter, space or sunlight.
• Happens within a population (Hawks in Food Chain
  Game)
• Happens between populations (Duckweed and
  submergent plants)