Alien Earthworm Population Likely To Increase Due To Human Activities, Threatens Native Earthworm Species

… Canada, the percentage of foreign earthworms is three times that of native … alien species that threaten native earthworm species, a phenomenon … alien earthworms will harm native ecosystems. However, the … on a variety of native habitats, including grasslands …… Canada, the percentage of foreign earthworms is three times that of native … alien species that threaten native earthworm species, a phenomenon … alien earthworms will harm native ecosystems. However, the … on a variety of native habitats, including grasslands …