Sometimes due to biotic/abiotic factor t | Class 12 Biology Chapter Ecosystem, Ecosystem NCERT Solutions

Ecological succession is the universal process of natural changes in the community structure on the ecological time scale. These communities are dynamic and undergoes continuous change in structure and function; important characteristic is that there structure constantly changes in response to the changing environmental conditions and these changes are directional and sequential. These changes leads to the community which is near the equilibrium with the environment is known as climax community which marks the end point of succession. The sequence of communities which replace one another level in the successional process is known as sere, the temporary successional communities in a sere is known as seral stage; and the initial seral stage is Pioneer stage. All the biotic and abiotic factors plays important role in this transition process that leads to reach the climax stage.

Yes, I agree with the statement. If the biotic and abiotic factors are not enough or limited for the climax then the community remains in the particular seral stage or in that series without reaching the climax stage. This could happen due to various factors like deforestation, forest fires, landslides, volcanic eruptions, overgrazing by the herbivores.