What is ecological succession?

• A. The process of cellular respiration.
• B. A gradual change in ecosystems leading to stability.
• C. An increase in biodiversity over one season.
• D. The process of population growth in a species.

Answer: (B)

Ecological succession is defined as a gradual process through which ecosystems change and develop over time, eventually reaching a stable state or climax community. This process can occur following disturbances, such as wildfires or human activities, and involves a series of stages where different species of plants and animals colonize an area, modify the environment, and pave the way for subsequent species.

During succession, pioneer species, which are typically hardy and can thrive in challenging conditions, are the first to establish themselves. As conditions improve, these species are gradually replaced by a succession of other species, leading ultimately to a more diverse and stable ecosystem. The concept emphasizes the dynamic nature of ecosystems, illustrating how they respond to changes and disturbances in their environment over time. Thus, the correct answer accurately captures the essence of ecological succession as a transition towards stability in ecosystems.