High resolution climatic monsoonal variability reconstructed from a continuous ~2700 year sediment record from Northwest Himalaya Ladakh / (Record no. 15039)

MARC details
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fixed length control field 02737nab a2200277 4500
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control field 20231026115340.0
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100 ## - MAIN ENTRY--PERSONAL NAME
Personal name Sharma, Choudhurimayum Pankaj
245 ## - TITLE STATEMENT
Title High resolution climatic monsoonal variability reconstructed from a continuous ~2700 year sediment record from Northwest Himalaya Ladakh /
260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT)
Name of publisher, distributor, etc Sage,
Date of publication, distribution, etc 2020.
300 ## - PHYSICAL DESCRIPTION
Pages Vol. 30, issue 3, 2020 ( 441–457 p.).
520 ## - SUMMARY, ETC.
Summary, etc A chronologically well-constrained sedimentary archive from Upshi (Ladakh) was studied using a multi-proxy approach namely palynology, environmental magnetism, total organic carbon (TOC), total nitrogen (TN), stable isotopes of carbon and nitrogen providing a continuous vegetation, and paleoenvironmental history spanning the last ~2700 years with a temporal resolution of ~43 years. Pollen assemblage shows non-arboreal pollen (NAP) and non-pollen palynomorph (NPP) were dominant around the Upshi from ~2646 to 2431 cal. yr BP, indicating warmer conditions. Arboreal pollen (AP) and NAP gradually increased from 2431 to 1860 cal. yr BP in the study area, under warm and wet conditions, corresponding to the Roman Warm Period (RWP). This phase also witnessed enhanced sediment δ15N and χlf values. From ~1860 to ~1154 cal. yr BP increased Chenopodiaceae/Amaranthaceae and substantial spread of NPP suggest decreased temperature and prevalence of cold-dry climate. This period also records declining trends of χlf, δ15N, δ13Corg, TOC, and TN contents. From ~1154 to 293 cal. yr BP, the vegetation type reversed to mixed conifer and broad-leaved forest with significant increase in herbaceous taxa, rising δ15N, δ13Corg, TOC, and TN suggesting warm and wet conditions in the study area. This period broadly corresponds to the ‘Medieval Warm Period’ (MWP). Among all the proxies employed, depth profiles of TOC and TN (wt%) appear to respond best against external climate forcing showing remarkable correlation(s) with residual Δ14C in atmosphere, indicating dominance of intrinsic solar variability on regional climate/environment. The reconstructed recorded is well connected with established historical events and cultural activities of the Eurasian region.
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Added Entry Personal Name Rawat, Suman Lata
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Added Entry Personal Name Srivastava, Pradeep
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Added Entry Personal Name Meena, Narendra K
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Added Entry Personal Name Agnihotri, Rajesh
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Added Entry Personal Name Kumar, Anil
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Added Entry Personal Name Chahal, Poonam
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Added Entry Personal Name Gahlaud, SKS
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Added Entry Personal Name Shukla, UK
773 0# - HOST ITEM ENTRY
Host Biblionumber 12756
Host Itemnumber 17200
Place, publisher, and date of publication London: Sage Publication Ltd, 2019.
Title Holocene/
International Standard Serial Number 09596836
856 ## - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier https://doi.org/10.1177/0959683619887426
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Koha item type E-Journal
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-- 58885
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