Ecological SuccessionEcological Succession

a process of ecological change in which a series of natural

communities are established and then replaced over time.

Ms. Chen, 2007

Primary SuccessionPrimary Succession

Succession that occurs on surfaces where no soil exists.

Examples:

Lava Flow Rocks exposed by glacier melt

Pioneer speciesPioneer speciesThe first to colonize They have to be hardy!!

Example:Barren rock - Lichens

https://www.uwsp.edu/natres/nres743/images/T1/succession.jpg

Primary Succession

Secondary SuccessionSecondary Succession

When a disturbance changes an existing community without removing the soil.

Examples:

Wild Fire Wind Damage Logging

http://www.scienceclarified.com/images/uesc_10_img0552.jpg

Secondary Succession

Factors that affect SuccessionFactors that affect Succession

Availability of seeds or colonistsWeatherSite conditionInteraction of species present

Water Cycle

Carbon Cycle

Nitrogen Cycle