Food production in the Early Woodland: macrobotanical remains as evidence for farming along the riverbank in eastern Tennessee

ABSTRACT

Open riverbanks and disturbed floodplains are targeted by archaeologists as optimal habitats for the growth of many of the weedy indigenous seed crops in eastern North America, but there is still little evidence for garden locations in the archaeological record. This article combines macrobotanical and geoarchaeological analyses from the Birdwell site (40GN228), located on the Nolichucky River, to give insight into where cultigens were planted and how they were managed in eastern Tennessee during the Early Woodland period. The recovery of uncharacteristic amounts of edible seeds and wood charcoal from the lower terrace of this site suggests that inhabitants were actively managing cultigens along the floodplain of this settlement. The presence of these remains in a non-midden context is evidence that precontact farmers in the Tennessee foothills took advantage of the newly created floodplains of the Early Woodland by implementing a burning regime, an early agricultural strategy aimed at increasing soil productivity and encouraging the growth of weedy annuals on the riverbank. In absence of lines of evidence such as preserved paleosols that can be examined for soil micromorphology, pollen, and phytoliths, integrated paleoethnobotanical and geomorphological analyses can be used to reconstruct land use and archaeologically identify prehistoric cultivated fields.