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Holocene Ethnobotanical and Paleoecological Record of Human Impact on Vegetation in the Little Tennessee River Valley, Tennessee

Published online by Cambridge University Press:  20 January 2017

Paul A. Delcourt ,
Hazel R. Delcourt ,
Patricia A. Cridlebaugh  and
Jefferson Chapman
Paul A. Delcourt
Affiliation:
Program for Quaternary Studies, Department of Geological Sciences and Graduate Program in Ecology, University of Tennessee, Knoxville, Tennessee 37996 USA
Hazel R. Delcourt
Affiliation:
Program for Quaternary Studies, Department of Botany and Graduate Program in Ecology, University of Tennessee, Knoxville, Tennessee 37996 USA
Patricia A. Cridlebaugh
Affiliation:
Department of Anthropology, University of Tennessee, Knoxville, Tennessee 37996 USA
Jefferson Chapman
Affiliation:
Department of Anthropology, University of Tennessee, Knoxville, Tennessee 37996 USA
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Abstract

Human occupation and utilization of plant resources have affected vegetation in the lower Little Tennessee River Valley of East Tennessee for 10,000 yr. Changes in Indian cultures and land use are documented by radiocarbon chronologies, lithic artifacts, ceramics, settlement patterns, and ethnobotanical remains from 25 stratified archaeological sites within the Holocene alluvial terrace. The ethnobotanical record consists of 31,500 fragments (13.7 kg) of wood charcoal identified to species and 7.7 kg of carbonized fruits, seeds, nutshells, and cultigens from 956 features. Pollen and plant macrofossils from small ponds both in the uplands and on lower stream terraces record local vegetational changes through the last 1500 to 3000 yr. Human impact increased after cultigens, including squash and gourd, were introduced ca. 4000 yr B.P. during the Archaic cultural period. Forest clearance and cultivation disturbed vegetation on both the floodplain and lower terraces after 2800 yr B.P., during the Woodland period. Permanent Indian settlements and maize and bean agriculture extended to higher terraces 1.5 km from the floodplain by the Mississippian period (1000 to 300 yr B.P.). After 300 yr B.P., extensive land clearance and cultivation by Historic Overhill Cherokee and Euro-Americans spread into the uplands beyond the river valley.

Type
Original Articles
Information
Quaternary Research , Volume 25 , Issue 3 , May 1986 , pp. 330 - 349
Copyright
University of Washington

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