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Constructing HistoriesArchaic Freshwater Shell Mounds and Social Landscapes of the St. Johns River, Florida$
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Asa R. Randall

Print publication date: 2015

Print ISBN-13: 9780813061016

Published to Florida Scholarship Online: January 2016

DOI: 10.5744/florida/9780813061016.001.0001

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Ecological Histories in the Middle Holocene

Ecological Histories in the Middle Holocene

(p.83) 3 Ecological Histories in the Middle Holocene
Constructing Histories

Asa R. Randal

University Press of Florida

The onset of intensive shellfishing has been modelled as a response to the middle Holocene Hypsithermal Climate Epoch and the concomitant establishment of near-modern hydrology of the St. Johns River. This chapter provides a critical review of modern and paleoclimatological data. It presents a new, high-resolution model of the fluvial and ecological history of the St. Johns River valley. The data suggest that instead of being a stable system after 7500 years, the river valley underwent a series of transformations at multiple scales due to changes in sea level and atmospheric water availability. These variations have implications for how past communities would have experienced and responded to climate change.

Keywords:   climate change, hydrology, fluvial history, landscape ecology, hypsithermal, Holocene, St. Johns River, St. Johns River valley, shellfishing, paleoclimatological data

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