This is more environment than biology, so I thought this was the best place to post this. Craig Loehle and Willis Elsenbach compare extinction rates of continents and islands. They find that Trivially, isolated species on islands are often highly specialized and not equipped to deal with major changes like the introduction of alien pests and predators. Therefore, programs aimed at preservation of island endemic species, are likely much more effective than all the efforts to prevent the Panda from dying out. Or?