Paleoethnobotany?

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Paleoethnobotany, also known as archaeobotany in European (particularly British) academic circles, is the archaeological sub-field that studies plant remains from archaeological sites. The major research themes are recovery and identification of plant remains, the use of wild plants, the origins of agriculture and domestication, and the co-evolution of human-plant interactions.

Paleoethnobotanists use a variety of methods to identify and recover plant remains. One method is to sieve excavated material in a water bath in order to allow the organic material to float to the surface. This method is known as flotation. The matrix (the soil from a suspected archaeological feature) is slowly added to agitated water. The soil, sand, and other heavy material, known as heavy fraction, will sink to the bottom. The less dense organic material such as charred seeds, wood and bone will tend to float to the surface. The material that floats to the top, called light fraction, is gathered with a sieve. The organic light fraction is then available for examination. Samples of the heavy fraction are also gathered for later anaylsis.

Another method used by paleoethnobotanists is the reconstitution and analysis of human paleofeces (sometimes the term coprolite is used).

A related field is palynology — the study of pollens. This has been used by many scientific disciplines. For paleoethnobotanists, it is a search for clues to early human environments and diet.

Another discipline used by paleoethnobotanists is dendrochronology.

Research

The work done in paleoethnobotany can be divided into field work, collections management, systematic description of species, and theories into the origins of human and plant interaction.

A paleoethnobotanist may find discrete concentrations of burned or dried remnants of seeds in an area of discolored soil (a possible hearth feature). If later analyses indicate that the remnants were of only mature wild seeds of a type of plant that grows locally, it could be inferred that the site was only visited seasonally. Such an inference could be supported by a lack of other features that would suggest that no permanent shelters were built at the site.

Alternatively, a paleoethnobotanist may find that a fire pit feature contains concentrated remnants of a wide variety of edible wild plants that mature throughout the year. An archaeologist may find features at the site that indicate some sort of semi-permanent dwellings (such as post holes and middens). The middens may have concentrations of animal remains, identified by a zooarchaeologist as those of wild game, with a variety of species-specific maturity levels. In that case, a more permanent settlement may be inferred, perhaps to the level of a village. Such an analysis of the archaeological features could suggest a society of hunter-gatherers who inhabited the site on a more-or-less year-round basis.

A paleoethnobotanist may also find concentrated remains of plants that typically are only grown through active cultivation (such as corn, beans, and squash). At the same site, an archaeologist might identify features such as stone walls surrounding enclosures arrayed in a pattern, and deep, layered middens with concentrations of domesticated animal remains such as goats or pigs. An analysis of the site, set within the context of the archaeological features and animal and plant remains, would suggest a settled agrarian community.

Further reading

• Christine A. Hastorf (or), Virginia S. Popper (or), Current Paleoethnobotany : Analytical Methods and Cultural Interpretations of Archaeological Plant Remains (Prehistoric Archeology and Ecology series), University of Chicago Press (January 15, 1989), ISBN 0226318931.

• Kristen J. Gremillion, People, Plants, and Landscapes: Studies in Paleoethnobotany, University of Alabama Press (February 1, 1997), ISBN 081730827X.

• Pearsall, Deborah M, Paleoethnobotany: A Handbook of Procedures, Second ion, Academic Press, San Diego (2000), ISBN 0125480423.

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