Reference Terms
from Wikipedia, the free encyclopedia

Savanna

A savanna or savannah is a grassland with widely spaced trees, and occurs in several types of biomes.

In savannas, grasses and trees are co-dominant vegetation types, with trees and grasses often alternating in dominance over time.

The herbaceous layer is usually a mixture of grasses and herbs with trees and shrubs scattered individually or in small clumps.

Savannas are frequently seen as a transitional zone, occurring between forest or woodland regions and grassland or desert regions.

Savannas are targets of regular fires.

Most savannas experience fire at least twice a decade and annual fires are common in many savanna types.

Note:   The above text is excerpted from the Wikipedia article "Savanna", which has been released under the GNU Free Documentation License.
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July 7, 2015

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