What does disruption of habitat mean?

Answer 1

Suppose a bulldozer knocked down your home. That would be a disruption of your habitat. More generally the expression applies to wildlife. Draining a swamp disrupts the habitat of species native to that swamp. Clearing land for agriculture, building fences or freeways that divide up habitat, clear cutting forest--all of these things serve as somewhat typical disruptions of habitat. Other things might be changing the climate, for example, by pumping up greenhouse gasses. Acid rain might make a lake uninhabitable for fish. Habitat disruptions need not be caused by men--a volcanic eruption dumping megatons of ash over an area can also be a habitat disruption.