The wildest land linking protected areas of the US

The "wildest" and least-developed corridors (in blue) between national parks and other protected areas (black).

Via plos.org
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Alex E

Ecoclimax is defined by Odum (1969) as the culmination state after a succession in a stabilized ecosystem in which maximum biomass (or high information content) and symbiotic function among organisms is kept per unit of available energy flow.