The concept of 'ecological resilience' has gained prominence in environmental science, referring to an ecosystem's capacity to absorb disturbance and reorganize while undergoing change so as to retain essentially the same function, structure, identity, and feedbacks. Unlike stability, which implies a return to an equilibrium state, resilience emphasizes the dynamic interplay between persistence and adaptability. For instance, a coral reef may experience bleaching due to rising sea temperatures, but if it retains sufficient diversity and connectivity, it can shift to a new state dominated by different coral species, still providing habitat and nutrient cycling. However, exceeding critical thresholds can lead to a regime shift, such as a transition to algal-dominated reefs, which fundamentally alters ecosystem services. Thus, resilience is not merely about resistance to change but about the capacity to navigate change without losing core functions.
❓ According to the passage, what is the main difference between ecological resilience and stability?
A. A. Resilience focuses on returning to an original state, while stability allows for transformation.
B. B. Resilience emphasizes adapting to change while maintaining core functions, whereas stability implies a return to equilibrium.
C. C. Stability is more concerned with biodiversity than resilience.
D. D. Resilience applies only to coral reefs, while stability applies to all ecosystems.
✅ 正确答案
B. Resilience emphasizes adapting to change while maintaining core functions, whereas stability implies a return to equilibrium.
IELTS Reading Tips
Skim the questions first, underline keywords, then locate in the passage
Watch for paraphrasing; correct answers are often reworded
Be wary of absolute statements (all, always, never) — usually wrong
Pay attention to content after transition words (however, but, yet)
Manage time: about 20 minutes per passage; skip difficult questions first