When Habitats Break Apart
A large landscape can be damaged without being completely destroyed. When a forest, grassland, or wetland is cut into separate pieces, the total area may still seem impressive on a map, but the living system no longer works in the same way. The edges dry out, predators vanish, movement becomes harder, and once-connected populations become stranded in small pockets.
Thomas Lovejoy describes this long decline as ecosystem decay. Other scientists call it faunal collapse or relaxation to equilibrium. The names differ, but the pattern is the same: once habitat becomes isolated, species do not all disappear at once. They fade out gradually, one after another, until the fragment holds much less life than it once did.
This change often goes unnoticed because people are used to thinking about endangered species one at a time. The deeper problem is structural. A broken habitat pushes whole communities toward extinction, not just the most famous animal in the region.
That is why fragmentation matters so much. It turns healthy landscapes into biological islands, and once that happens, the same rules that govern remote islands begin to govern forests, mountains, and parks on the mainland.
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