Explain the concept of ecosystem resilience, and what factors influence a system's ability to recover after a disturbance.

Explain the concept of ecosystem resilience, and what factors influence a system's ability to recover after a disturbance.

• A. Resilience is the capacity to absorb disturbances and reorganize; diversity, connectivity, and productive feedbacks influence it.
• B. Resilience is the speed at which energy flows.
• C. Resilience is the total species count.
• D. Resilience is unrelated to disturbances.

Answer: (A)

Resilience means an ecosystem’s ability to absorb a disturbance and reorganize while keeping its essential functions, structure, and feedbacks intact so it can recover over time. This capacity is shaped by several interconnected factors. Diversity provides a range of species and functional roles that can respond in different ways to stress, so the system isn’t tied to one sole path of recovery. Connectivity between patches and habitats allows organisms to move, recolonize, and share nutrients or energy, speeding up restoration after a disturbance. Productive feedbacks—like nutrient cycling, energy flow, predator–prey relationships, mutualisms, and the actions of ecosystem engineers—help maintain or restore the processes that keep the ecosystem functioning, so recovery can proceed more smoothly. For example, a forest with multiple species and connected stands can rebound from a fire more readily because some species sprout quickly, seeds disperse from nearby areas, and nutrients and organisms can flow back into the damaged area. In contrast, resilience is not simply about how fast energy moves through the system, nor is it guaranteed by just having many species; and it is directly related to how disturbances affect the ecosystem, not unrelated to them.

Resilience means an ecosystem’s ability to absorb a disturbance and reorganize while keeping its essential functions, structure, and feedbacks intact so it can recover over time. This capacity is shaped by several interconnected factors. Diversity provides a range of species and functional roles that can respond in different ways to stress, so the system isn’t tied to one sole path of recovery. Connectivity between patches and habitats allows organisms to move, recolonize, and share nutrients or energy, speeding up restoration after a disturbance. Productive feedbacks—like nutrient cycling, energy flow, predator–prey relationships, mutualisms, and the actions of ecosystem engineers—help maintain or restore the processes that keep the ecosystem functioning, so recovery can proceed more smoothly.

For example, a forest with multiple species and connected stands can rebound from a fire more readily because some species sprout quickly, seeds disperse from nearby areas, and nutrients and organisms can flow back into the damaged area. In contrast, resilience is not simply about how fast energy moves through the system, nor is it guaranteed by just having many species; and it is directly related to how disturbances affect the ecosystem, not unrelated to them.