How does habitat degradation differ from habitat destruction?

In ecology, habitat destruction and habitat degradation are distinct processes that both contribute to habitat loss, the primary driver of biodiversity decline.1

Habitat destruction occurs when an ecosystem is transformed to such an extent that it can no longer support its native species. This often involves the complete removal of vegetation, such as clearing forests for agriculture or livestock grazing. Because the environment is fundamentally altered, native organisms are typically forced to migrate or face extinction.1

Habitat degradation, by contrast, involves the disruption of an ecosystem without its total destruction. While the habitat remains intact, its quality is diminished, making survival more difficult for native plants and animals. This is frequently caused by pollution or the introduction of invasive species, which may outcompete native life for essential resources like food, water, or living space.1

Ultimately, while destruction removes the physical space required for life, degradation stresses the existing environment, reducing its capacity to sustain healthy populations.1