Vegetational and climatic variations during the past 3100 years in southern India: evidence from pollen, magnetic susceptibility and particle size data

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dc.contributor.author Bhattacharyya, Amalava
dc.contributor.author Sandeep, Kizhur
dc.contributor.author Misra, Sandhya
dc.contributor.author Shankar, Rajasekhariah
dc.contributor.author Warrier, Anish K.
dc.contributor.author Weijian, Zhou
dc.contributor.author Xuefeng, Lu
dc.date.accessioned 2015-05-03T09:59:20Z
dc.date.available 2015-05-03T09:59:20Z
dc.date.issued 2015-04
dc.identifier.citation Bhattacharyya, Amalava; Sandeep, Kizhur; Misra, Sandhya; Shankar, Rajasekhariah; Warrier, Anish K.; Weijian, Zhou and Xuefeng, Lu, “Vegetational and climatic variations during the past 3100 years in southern India: evidence from pollen, magnetic susceptibility and particle size data”, Environmental Earth Sciences, DOI: 10.1007/s12665-015-4415-6, Apr. 2015. en_US
dc.identifier.issn 1866-6299
dc.identifier.uri http://dx.doi.org/10.1007/s12665-015-4415-6
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/1718
dc.description.abstract Vegetational history vis a vis climate change during the past 3100 cal. years BP was deciphered from pollen data supplemented with magnetic susceptibility and particle size data for a 2.5 m long sediment core from Pookot Lake, Kerala, southern India. Pollen data suggest a mixed assemblage of upland tropical elements and wetland mangrove taxa. The presence of trace amounts of pollen grains of montane taxa like Betula, Pinus and Alnus points to their long distance dispersal. Pollen grains of Ixora, Syzygium, Symplocos, Moraceae and Arecaceae that represent tropical vegetation were also recovered, indicating modern vegetation in and around Pookot Lake. Mangrove elements are mostly represented by species of Rhizophora and Ceriops decandra along with other taxa. High-rainfall periods are characterised by high sand % and low clay % and vice versa. The pollen data correspond well with magnetic susceptibility and particle size data. The data obtained suggest three broad phases of climate, with minor oscillations, during the past 3100 cal. years BP: (1) wet climate during 3100–2500 cal. years BP; (2) dry climate spanning a long period that ended around 1000 cal. years BP; (3) amelioration in climate after 1000 cal. years BP, reflected in the presence of luxuriant vegetation and high magnetic susceptibility values. en_US
dc.description.statementofresponsibility by Amalava Bhattacharyya, Kizhur Sandeep, Sandhya Misra, Rajasekhariah Shankar, Anish K. Warrier, Zhou Weijian and Lu Xuefeng
dc.format.extent vol. 74, no. 4, pp. 3559-3572
dc.language.iso en en_US
dc.publisher Springer en_US
dc.subject Magnetic susceptibility en_US
dc.subject Palaeovegetation en_US
dc.subject Pookot Lake en_US
dc.subject Pollen en_US
dc.subject Southern India en_US
dc.title Vegetational and climatic variations during the past 3100 years in southern India: evidence from pollen, magnetic susceptibility and particle size data en_US
dc.type Article en_US
dc.relation.journal Environmental Earth Sciences


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