Reid's paradox of rapid plant migration

Reid's paradox of rapid plant migration refers to a phenomenon observed in the study of plant ecology and biogeography. It is named after the British botanist David Reid, who noted that many plant species, particularly in temperate regions, have been able to rapidly expand their ranges far beyond what would be expected based on the rates of seed dispersal and the time it would take for plants to colonize new areas. The paradox arises particularly in the context of post-glacial plant recolonization.