Wikipedia definition
1. Habitat fragmentationHabitat fragmentation, as the name implies, describes the emergence of discontinuities (fragmentation) in an organism's preferred environment, causing population fragmentation. Habitat fragmentation can be caused by geological processes that slowly alter the layout of the physical environment, or by human activity such as land conversion, which can alter the environment much faster and causes extinctions of many species.
Read “Habitat fragmentation” on English Wikipedia
Read “生息地分断化” on Japanese Wikipedia
Read “Habitat fragmentation” on DBpedia


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