Populations ranged from a low of 2 to a high of 340 earthworms per square meter over all the sites and tillage systems surveyed. In addition, nine no- till and only three tilled sites had significant ...

RANGE: The giant Palouse earthworm inhabits the Palouse bioregion in southeastern Washington, west central Idaho, and northeastern Oregon. Covering about 16,000 square kilometers, the region lies ...

Once declared by Aristotle to be “the intestines of the earth,” earthworms have been recognized for centuries as essential to the health of our planet's soil. But one of the most interesting ...