Keystone Shelter principle
Lessons from Gopher Tortoise
Build for many.
Sandy Burrow Engineering

Core lesson
The best homes become refuge for more lives than the builder planned.
Biological basis
Gopher Tortoises dig deep burrows in sandy soils, and those burrows provide shelter for many other species, making the tortoise an important keystone species.
Best use cases
Where this lesson tends to be most useful in practice.
ShelterKeystone impactHome buildingCommunity supportEcological generosity