In 1935, weeping lovegrass was planted in Oklahoma to stop erosion; one strain later covered 2 million acres, and studies found lower plant diversity
Weeping lovegrass was planted from 1935 to stop erosion and spread widely, but a 1999 study found 42 fewer plant species in its plots than in native grassland.
We haven't written up this one. Hindustan Times - World News has the full story — the link below goes straight to it.