Native American Use of Fire - Role of Fire By Natives

Role of Fire By Natives

Further information: Pre-Columbian savannas of North America

The cumulative impact of burning by Native Americans profoundly altered the landscape. When first encountered by Europeans, many ecosystems were the result of repeated fires every one to three years, resulting in the replacement of forests with grassland or savanna, or opening up the forest by removing undergrowth. More forest exists today in some parts of North America than when the Europeans first arrived. In South America, the cerrado of South America have been coexisting with fire since ancient times; initially as natural fires caused by lightning or volcanic activity, and later caused by man. Terra preta soils, created by slow burning, are found mainly in Amazonia, where estimates of the area covered range from 0.1 to 0.3%, or 6,300 to 18,900 km² of low forested Amazonia to 1.0% or more (twice the surface of Great-Britain).

There is some argument about the effect of human-caused burning when compared to lightning in western North America. There is agreement that natives played a significant role across the eastern part of that continent.

Generally, the American Indians burned parts of the ecosystems in which they lived to promote a diversity of habitats, especially increasing the "edge effect," which gave the Indians greater security and stability to their lives.

Most primary or secondary accounts relate to the purposeful burning to establish or keep "mosaics, resource diversity, environmental stability, predictability, and the maintenance of ecotones." These purposeful fires by almost every Native American tribe differ from natural fires by the seasonality of burning, frequency of burning certain areas, and the intensity of the fire. Indians tended to burn differently depending on the resources being managed. Hardly ever did the various tribes purposely burn when the forests were most vulnerable to catastrophic wildfire. Indeed, for some Indians, saving the forest from fire was crucial for survival. Those Indian tribes that used fire in moist ecosystems tended to burn in the late spring just before new growth appears, while in areas that are drier fires tended to be set during the late summer or early fall since the main growth of plants and grasses occurs in the winter. For the most part, tribes set fires that did not destroy entire forests or ecosystems, were relatively easy to control, and stimulated new plant growth. Indians burned selected areas yearly, every other year, or intervals as long as five years.

“	the modification of the American continent by fire at the hands of "Indigenous people" was the result of repeated, controlled, surface burns on a cycle of one to three years, broken by occasional holocausts from escape fires and periodic conflagrations during times of drought. Even under ideal circumstances, accidents occurred: signal fires escaped and campfires spread, with the result that valuable range was untimely scorched, buffalo driven away, and villages threatened. Burned corpses on the prairie were far from rare. So extensive were the cumulative effects of these modifications that it may be said that the general consequence of the Indian occupation of the New World was to replace forested land with grassland or savanna, or, where the forest persisted, to open it up and free it from underbrush. Most of the impenetrable woods encountered by explorers were in bogs or swamps from which fire was excluded; naturally drained landscape was nearly everywhere burned. Conversely, almost wherever the European went, forests followed. The Great American Forest may be more a product of settlement than a victim of it.	”
—Steve Pyne,