The savannas or Pampas of Heath is a mosaic of plant communities characterized by herbaceous grass species (Poaceae and Cyperaceae), in mixed composition with woody vegetation (trees and shrubs) in numerous small islands. In places with greater land depressions, patches of royal palm (Mauritia flexuosa) form that are often permanently or seasonally flooded.

This ecosystem’s conservation status is excellent and has been minimally impacted by ranching activities. Maintaining the ecological integrity of this ecosystem will ensure the conservation of representative wildlife such as the maned wolf (Chrysocyon brachyurus) and marsh deer (Blastocerus dichotomus), both of which are endangered species.

The Amazonian savannas of the Heath River are similar in vegetation with those of the Beni, which have been used for ranching since the time of the Jesuit missions.