Late Quaternary climatic variability in the Central Ganga Plain: A multi-proxy record from Karela Jheel (Lake)

Deepika Tripathi; Devendra Kumar Chauhan; Anjum Farooqui; Bahadur Singh Kotlia; Biswajeet Thakur; P. Morthekai; Tengwen Long; Mohan Singh Chauhan; Anil Kumar Pokharia

doi:10.1016/j.quaint.2016.11.033

Late Quaternary climatic variability in the Central Ganga Plain: A multi-proxy record from Karela Jheel (Lake)

Deepika Tripathi, Devendra Kumar Chauhan, Anjum Farooqui, Bahadur Singh Kotlia, Biswajeet Thakur, P. Morthekai, Tengwen Long, Mohan Singh Chauhan, Anil Kumar Pokharia

Research output: Journal Publication › Article › peer-review

14 Citations (Scopus)

Abstract

A multi-proxy study involving phytoliths, diatoms, thecamoebians and sponge spicules was carried out on a trench profile (260 cm deep) from Karela Lake in the Central Ganga Plain to reconstruct climatic variations since ca. 17,000 cal BP. The testate amoebae record indicate spells of winter monsoon between ca. 17,000 cal BP and 13,700 cal BP. Increased diversity of diatoms, testate amoebae and sponge spicules, in addition to low Humidity/Aridity Index (Iph) values suggest strengthened monsoon inducing the expansion of lake margin and high primary productivity during ca. 13,700 to 4300 cal BP. Further between ca. 4300 and 2900 cal BP, higher Iph values and related responses of other studied proxies show a stressed lake ecosystem. Since ca. 2900 cal BP, area of the lake was reduced responding to low intensity of the Indian Summer Monsoon. Anthropogenic activities may also have played a role in the lake shrinking at least during some parts of this duration.

Original language	English
Pages (from-to)	70-85
Number of pages	16
Journal	Quaternary International
Volume	443
DOIs	https://doi.org/10.1016/j.quaint.2016.11.033
Publication status	Published - 10 Jul 2017
Externally published	Yes

Keywords

Central Ganga Plain
Climate reconstruction
Karela Lake
Late Quaternary
Multi-proxy

ASJC Scopus subject areas

Earth-Surface Processes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.quaint.2016.11.033

Cite this

@article{b0f0a11d4df843b095fdea9b2139d706,

title = "Late Quaternary climatic variability in the Central Ganga Plain: A multi-proxy record from Karela Jheel (Lake)",

abstract = "A multi-proxy study involving phytoliths, diatoms, thecamoebians and sponge spicules was carried out on a trench profile (260 cm deep) from Karela Lake in the Central Ganga Plain to reconstruct climatic variations since ca. 17,000 cal BP. The testate amoebae record indicate spells of winter monsoon between ca. 17,000 cal BP and 13,700 cal BP. Increased diversity of diatoms, testate amoebae and sponge spicules, in addition to low Humidity/Aridity Index (Iph) values suggest strengthened monsoon inducing the expansion of lake margin and high primary productivity during ca. 13,700 to 4300 cal BP. Further between ca. 4300 and 2900 cal BP, higher Iph values and related responses of other studied proxies show a stressed lake ecosystem. Since ca. 2900 cal BP, area of the lake was reduced responding to low intensity of the Indian Summer Monsoon. Anthropogenic activities may also have played a role in the lake shrinking at least during some parts of this duration.",

keywords = "Central Ganga Plain, Climate reconstruction, Karela Lake, Late Quaternary, Multi-proxy",

author = "Deepika Tripathi and Chauhan, {Devendra Kumar} and Anjum Farooqui and Kotlia, {Bahadur Singh} and Biswajeet Thakur and P. Morthekai and Tengwen Long and Chauhan, {Mohan Singh} and Pokharia, {Anil Kumar}",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd and INQUA",

year = "2017",

month = jul,

day = "10",

doi = "10.1016/j.quaint.2016.11.033",

language = "English",

volume = "443",

pages = "70--85",

journal = "Quaternary International",

issn = "1040-6182",

publisher = "Elsevier Ltd.",

}

TY - JOUR

T1 - Late Quaternary climatic variability in the Central Ganga Plain

T2 - A multi-proxy record from Karela Jheel (Lake)

AU - Tripathi, Deepika

AU - Chauhan, Devendra Kumar

AU - Farooqui, Anjum

AU - Kotlia, Bahadur Singh

AU - Thakur, Biswajeet

AU - Morthekai, P.

AU - Long, Tengwen

AU - Chauhan, Mohan Singh

AU - Pokharia, Anil Kumar

PY - 2017/7/10

Y1 - 2017/7/10

N2 - A multi-proxy study involving phytoliths, diatoms, thecamoebians and sponge spicules was carried out on a trench profile (260 cm deep) from Karela Lake in the Central Ganga Plain to reconstruct climatic variations since ca. 17,000 cal BP. The testate amoebae record indicate spells of winter monsoon between ca. 17,000 cal BP and 13,700 cal BP. Increased diversity of diatoms, testate amoebae and sponge spicules, in addition to low Humidity/Aridity Index (Iph) values suggest strengthened monsoon inducing the expansion of lake margin and high primary productivity during ca. 13,700 to 4300 cal BP. Further between ca. 4300 and 2900 cal BP, higher Iph values and related responses of other studied proxies show a stressed lake ecosystem. Since ca. 2900 cal BP, area of the lake was reduced responding to low intensity of the Indian Summer Monsoon. Anthropogenic activities may also have played a role in the lake shrinking at least during some parts of this duration.

AB - A multi-proxy study involving phytoliths, diatoms, thecamoebians and sponge spicules was carried out on a trench profile (260 cm deep) from Karela Lake in the Central Ganga Plain to reconstruct climatic variations since ca. 17,000 cal BP. The testate amoebae record indicate spells of winter monsoon between ca. 17,000 cal BP and 13,700 cal BP. Increased diversity of diatoms, testate amoebae and sponge spicules, in addition to low Humidity/Aridity Index (Iph) values suggest strengthened monsoon inducing the expansion of lake margin and high primary productivity during ca. 13,700 to 4300 cal BP. Further between ca. 4300 and 2900 cal BP, higher Iph values and related responses of other studied proxies show a stressed lake ecosystem. Since ca. 2900 cal BP, area of the lake was reduced responding to low intensity of the Indian Summer Monsoon. Anthropogenic activities may also have played a role in the lake shrinking at least during some parts of this duration.

KW - Central Ganga Plain

KW - Climate reconstruction

KW - Karela Lake

KW - Late Quaternary

KW - Multi-proxy

UR - http://www.scopus.com/inward/record.url?scp=85014108464&partnerID=8YFLogxK

U2 - 10.1016/j.quaint.2016.11.033

DO - 10.1016/j.quaint.2016.11.033

M3 - Article

AN - SCOPUS:85014108464

SN - 1040-6182

VL - 443

SP - 70

EP - 85

JO - Quaternary International

JF - Quaternary International

ER -