How does habitat degradation affect native species?

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ecological disturbance caused by forest fire — ecological disturbance Aerial view of the remains of trees on a hillside after a forest fire.

Habitat degradation occurs when an ecosystem is disrupted but not entirely destroyed, making it significantly more difficult for native plants and animals to survive. This process is often driven by pollution or the introduction of invasive species.1

Pollutants increase environmental stress, often with lethal consequences. For instance, nutrient runoff can trigger eutrophication, where excessive algae growth leads to oxygen depletion, threatening aquatic life. Similarly, invasive species disrupt ecosystems by acting as highly efficient predators that deplete prey populations or as aggressive competitors that monopolize essential resources like food, water, and sunlight, ultimately displacing native flora and fauna.1

It is a fundamental ethical imperative to protect these ecosystems, as habitat degradation is a primary driver of the global decline in biodiversity, pushing vulnerable species toward extinction.1