When succession ceases in an ecosystem, it means that the process of ecological development has reached a stable state where significant changes are no longer occurring. Succession can cease for various reasons, such as when the ecosystem has reached a climax community, which is a relatively stable and long-lasting community of plants and animals that have reached a balance with their environment.
One scenario in which succession might cease is when trees have replaced shrubs and grasses. This could indicate that the ecosystem has reached a mature stage where taller and more complex vegetation has taken over, and further changes in plant composition are minimal.
Another reason for the cessation of succession could be when animals begin to use plant resources extensively. This interaction between animals and plants can influence the structure and composition of the ecosystem, potentially leading to a stable state where the dynamics of plant and animal populations reach an equilibrium.
Additionally, if lichens and mosses dominate the ecosystem, it could signify a specific stage of succession where these pioneer species have established themselves but are not being replaced by more complex vegetation. This dominance may indicate a halt in succession at this early stage.
Lastly, when biodiversity reaches its lowest point, it can also result in the cessation of succession. A decrease in biodiversity can indicate a lack of new species colonizing the ecosystem or a loss of species diversity, leading to a stable but less resilient ecosystem.
In summary, succession ceases in an ecosystem when it reaches a point of stability, whether due to the replacement of plant species, interactions between animals and plants, dominance of pioneer species, or a decrease in biodiversity. Each of these scenarios represents a different aspect of ecological development that can contribute to the cessation of succession in an ecosystem.
