Pingos in the Yukon-Kuskokwim Delta, Alaska: Their Plant Succession and Use by Mink

Résumé

Notes 1960-1963 investigations of these frost mounds, their plant succession, and use by mink. The pingos are described, and three types distinguished according to the plant com- munities they support, viz: grass, mixed vegetation type pingos have the greatest depth to permafrost, also other conditions suitable for mink natal dens.