4.4: Ecological Succesion, Human Impacts and Extinction

%%Ecological succession%%: the process by which the mix of species and habitats in the area changes over time. this can be seen through time in the fossil record and through geological dating of rocks, organisms and ecosystems. this information can be used to speed up recovery of ecosystems damaged by human impact or natural disaster.

==Succesion==: defined as a mix of species that occurs overtime due to the alteration to the environment caused by the organism that are present at each stage and as the community matures. these changes make it more or less suitable for some organisms to survive. resulting in change in mix of species.

There are 2 types of succession: Primary and Secondary.

both involve environmental disturbances leading to successive changes in a range of species.

• ==Primary succession==: begins from bare rock, which is newly formed and has top soiled removed. establishing a new community/ecosystem can take thousands of years.
• ==Secondary Succesion==:

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