Difference Between Primary And Secondary Succession

The ecosystem is constantly changing for various reasons. In biology, when different parts of the environment come into existence and then are replaced, it is called ecological succession.

Difference Between Primary And Secondary Succession

There are two types of environmental duplications, primary and secondary. When parts of the environment grow without soil or with very little soil, it is called primary failure. Abiotic factors such as water and air, as well as species such as algae and lichens, play important roles in the primary structure.

Secondary failure: A good example of secondary failure, defined as the development of a natural area on land adjacent to land but without natural vegetation due to some natural disaster or human-induced activity, are agricultural crops abandoned. Below, we discussed the difference between primary and secondary inheritance.

What is Primary?

Primary succession is a type of biological reproduction that begins in abiotic tissues. It is where plants and animals first colonize a biotic landscape, such as desert areas or where the soil cannot sustain life.

Pioneer species, or early species, form an earlier organismal community that is evolutionarily simple. This area becomes more complex as new models arrive.

When the earth was first created, it was just space without land. It grew to include only stones instead of soil. Those stones were damaged by the elements and broken by microorganisms to form soil.

Soil then became the mainstay of plant life. Different species of animals have adapted to live in plants. It thus progressed little by little from the primary inheritance to the culminating episode.

Primary protection – Position that back protection is said to be the first back line in new or inorganic habitats, primary protection is said to be the first line of open water etc., where recently built rock exists, such as volcanic eruption or snow. – an ice episode is a natural disaster event due to a natural disaster. That’s why it can be a long process. So the process takes a bit longer and the whole time is unpredictable.

What is Secondary?

The second is the second type of evolutionary duplication, which occurs when the primary ecosystem is destroyed.

Thus, following major disturbances such as landslides, large rock flows, and forest fires, plants and animals recolonize habitats in a sequential manner because part of the ‘top disappeared with a secondary regression in the ecosystem when the disturbance did not eliminate all organisms and nutrients from.

the environment Smaller plants appear, followed by larger plants at the beginning of the succession. Tall trees block the sun and change the ecosystem under the canopy. When all this is done, the climactic part arrives.

Insects and weeds are often the first organisms to regain control in Phase II. Complex and stable species of plants and animals slowly arrive.

Stability in the ecological structure of a biological community is established when the community remains undisturbed for long periods of time.

Difference Between Primary And Secondary Succession

Primary Succession

Secondary Succession


In areas which are lifeless or barren In areas which were previously inhabited or recently denuded

Time to complete

Around 1000 years or more Around 50 – 200 years


Humus is absent in the starting as there is no soil Presence of Humus due to the previous occupants and their decomposition


Dissolves in warm water Does not dissolve in water


The absence of soil in the initial process Presence of soil along with organisms

Seral community

There are many intermediary seral communities Few intermediary seral communities when compared to the primary succession


An unfavorable environment in the starting Since beginning the environment is favorable


Bare rock, ponds, desert, etc. The area affected by natural calamities, covered under deforestation, etc.

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