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Hated Invasive Species Helps Restore an Ecosystem

“It’s not quite redemption, but one of most loathed invasive species in the world—the European green crab Carcinus maenas—has had a surprisingly positive effect on an ecosystem. On Cape Cod, Massachusetts, researchers have found that the crab is reversing a decades-long trend of damage that another species has inflicted on salt marshes. It might be the first nice thing that the green crab has done for anyone.” (ScienceNOW).