NataliePortland to Today I Learned (TIL)English · 2 years agoTIL the common earthworm mates once a year and can live 4-8 yearswww.vigienature-ecole.frexternal-linkmessage-square4linkfedilinkarrow-up164arrow-down10
arrow-up164arrow-down1external-linkTIL the common earthworm mates once a year and can live 4-8 yearswww.vigienature-ecole.frNataliePortland to Today I Learned (TIL)English · 2 years agomessage-square4linkfedilink
minus-squaresleet01linkfedilinkarrow-up2·2 years agoI found out just a few years ago that many earthworms are invasive species in North America: https://en.m.wikipedia.org/wiki/Invasive_earthworms_of_North_America. Apparently the last ice age cleared out all the earthworms north of the 49th, and existing native species didn’t migrate back after the glaciers receded, leaving many northern and west-coast forests without earthworms at all.
I found out just a few years ago that many earthworms are invasive species in North America: https://en.m.wikipedia.org/wiki/Invasive_earthworms_of_North_America.
Apparently the last ice age cleared out all the earthworms north of the 49th, and existing native species didn’t migrate back after the glaciers receded, leaving many northern and west-coast forests without earthworms at all.