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Climate Induced Vegetational Evolution: Palynological and Thecamoebian Study from Coastal Archaeological Sites, Saurashtra

DRS at CSIR-National Institute of Oceanography

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Title Climate Induced Vegetational Evolution: Palynological and Thecamoebian Study from Coastal Archaeological Sites, Saurashtra
 
Creator Farooqui, A.
Gaur, A.S.
 
Subject MARINE ARCHAEOLOGY
AQUATIC ECOLOGY, PRODUCTIVITY
METEOROLOGY AND CLIMATOLOGY
 
Description Coastal archaeological sites serve as potential archive of past climate-culture and vegetation relationship responding to relative sea level changes. Most of the Harappan dwellers along the coastal region largely depended on perennial or monsoon-driven river systems for fresh water required for the agriculture based sustenance. The period since 4000 yrs, BP has witnessed climatic amelioration from warm and humid (high precipitation) to dry and arid (low precipitation). Consequences of climate change evolved the vegetation from evergreen/moist deciduous to dry deciduous as number of dry months per annum increased. The palynological results from Bet Dwarka, Bokhira (Porbander) reveal absence of vegetation, although fresh water thecamoebiins and few marine palynomorphs indicate the relative extent of fresh water and marine water incursion. Results from Kodinar (Kaj and Kanjetar) show significant abundance of evergreen and moist deciduous vegetation around 4000 yrs. BP which gradually declined and replaced by dry deciduous vegetation by around 2000 yrs. BP. The present day hinterland vegetation in these areas and adjacent north-east Gir Forest is largely represented by dry deciduous plant taxa except for mangrove in coastal areas. Overall results show that the dry and arid climate reached its climax in Bokhira and Porbander (22 degree-22 degree 30 minute Latitude) around 4000 yrs. BP while in Kodinar (21 degree - 21 degree 30 minute) it reached its climax around 2000 yrs. BP. Thus, the climatic climax of dry and arid conditions shifted from North to southern part of Saurashtra
 
Date 2015-07-08T12:22:46Z
2015-07-08T12:22:46Z
2015
 
Type Conference Article
 
Identifier Recent Researches on Indus Civilization & Maritime Archaeology in India. ed by: Gaur, A.S.; Sundaresh,;Agam Kala Prakashan. New Delhi; 2015; 97-106
http://drs.nio.org/drs/handle/2264/4725
 
Language en
 
Rights © [2015] Society of Marine Archaeology . All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository
 
Publisher Agam Kala Prakashan, New Delhi