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A savanna or savannah is a tropical or subtropical woodland ecosystem characterised by the trees being sufficiently small or widely spaced so that the canopy does not close. While it is often believed Savannas feature widely-spaced, scattered trees, many savanna communities tree densities are higher and trees are more regularly spaced than in forest communities.

Savannas are also characterised by seasonal water availability, with the majority of rainfall being confined to one season of the year. Savannas can be associated with several types of biomes. Savannas are frequently seen as a transitional zone, occurring between forest and desert or prairie.

Plant life Edit

The open canopy allows sufficient light to reach the ground to support an unbroken herbaceous layer consisting primarily of tropical grasses that use the C4 type of photosynthesis.

C4 plants have a competitive advantage over plants possessing the more common C3 carbon fixation pathway under conditions of drought, high temperatures and nitrogen or carbon dioxide limitation. 97% of the water taken up by C3 plants is lost through transpiration, compared to a much lower proportion in C4 plants, demonstrating their advantage in a dry environment.

Etymology Edit

The word is a misappropriation from the name of the kingdom of the Utani tribe, the Savaj. Savana is an ancient name for the highland kingdom, but became synonymous with a region known now as Savana Tern ("Lower Savana"), which is a sub-tropical savanna -- a sparsely-forested grassland between the B'yantusu highlands and the Chiquiti near-desert grasslands.

It is believed the word was transported to the Futuronian lands by explorers from the kingdoms of Ulan on Eras's west coast some thousand years ago, who were following the exploits of their Guwimithian and Narodni brethren.

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