A decline in species-specific habitat quality that leads to reduced survival and/or reproductive success in a population e.g. related to changes in food availability cover or climate. (Source: IUCN)

Loss of suitable habitat for a given species as such that the particular species no longer occurs in that area. (Source: D.B. Lindenmayer, J. Fischer: Habitat Fragmentation and Landscape Change, Island Press 2013) This concept also includes habitat fragmentation, caused by geological processes or human activities.

Alternative labels:
habitat degradation
habitat fragmentation
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