"We live in a very inter-connected world. This is something that conservationists have learned when studying the species that they are trying to protect; It's not good enough to create protected habitats that are isolated, like islands surrounded by roads, fences, farmlands, cities, etc. That's not how most species have evolved. Their habitats need to be connected to others via wildlife corridors if life there is to really thrive and be robust enough to survive in the long-term. Here's a few reasons why these corridors are so important."
Via Marina Steffensen