Question

Why is the rate of secondary succession faster than that of primary succession?

Answer 1

Answer:

Secondary succession usually occurs faster than primary succession because the substrate is already present.

Explanation:

Secondary succession usually occurs faster than primary succession because the substrate is already present.

In primary succession, there is no soil and it needs to form. This process takes time, as pioneer species must colonize the area, they must die, and as this happens over and over again, soil forms.

Secondary succession happens after some sort of disturbance. Vegetation has already been present in the area, but it no longer exists. Compared to the image below, secondary succession does not need to have pioneer species colonize the land nor does decomposition need to occur to create a layer of topsoil. These processes already happened.

Answer 2

Answer:

The soil is already there, so it's usually faster than the primary transition.

Explanation:

• Secondary succession is one of   styles of plant ecological succession.
• Unlike the first primary transition, the secondary transition is a process initiated by  an already established ecosystem-affecting event (wildfire, harvest, hurricane, etc.).
• In forests and wheat fields: species in smaller populations, and  such secondary successions occur in existing soils, primary successions usually occur in soil-free areas.
• Many elements can have an effect on secondary inheritance such as nutritional interactions, initial composition, and competitive colonization.
• The soil is already there, so it's usually faster than the primary transition.  

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