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Conference Paper: An examination of the molecular distribution of a tropical lake sediment sequence to assess organic carbon records of climate and environmental changes

TitleAn examination of the molecular distribution of a tropical lake sediment sequence to assess organic carbon records of climate and environmental changes
Authors
KeywordsAsian monsoon
δ13C
N-alkanes
TAR
Paq
Lake-level
Issue Date2012
PublisherDurham University.
Citation
The 1st DIPPI-C Workshop, Durham, UK., 8-10 May 2012. In Abstract Bok of the 1st DIPPI-C Workshop, 2012, p. 32 How to Cite?
AbstractThe bulk organic carbon isotope (δ13C), as the conventional indicator of the C3 and C4 vegetation change, turns relatively contentious in the application of palaeoclimate reconstruction from the lacustrine sediments due to the similar δ13C value between C3 and aquatic plants, particularly in the eutrophic lakes. A long successive lacustrine sequence from Tianyang Maar Lake, locating in the tropical region of South China, has complex organic matter (OM) sources due to relatively high inputs from the aquatic macrophytes and diatoms. We examined the n-alkanes concentration of 80 selected samples from the Tianyangcore, as an additional index to assess the paleovegetation and lake-level changes. The n-alkanes results show some distributional patterns of compounds with carbon numbers ranging from C15 to C39. These patterns indicate differences in OM sources and relative contributions from higher and lower plants, improving the interpretation of δ13C records of changes in climate and depositional conditions. Meanwhile, more details of the aquatic macrophyte and diatom inputs revealed by the n-alkanes based proxies (TAR, Paq) replenish the evidence of the lake-level changes during the evolution history of Tianyang Lake.
Description(DIPPI-C) - Development of Isotopic Proxies for Palaeoenvironmental Interpretation: a Carbon Perspective
Persistent Identifierhttp://hdl.handle.net/10722/149318

 

DC FieldValueLanguage
dc.contributor.authorWang, Nen_US
dc.contributor.authorZong, Yen_US
dc.contributor.authorBrodie, CRen_US
dc.date.accessioned2012-06-22T06:38:28Z-
dc.date.available2012-06-22T06:38:28Z-
dc.date.issued2012en_US
dc.identifier.citationThe 1st DIPPI-C Workshop, Durham, UK., 8-10 May 2012. In Abstract Bok of the 1st DIPPI-C Workshop, 2012, p. 32en_US
dc.identifier.urihttp://hdl.handle.net/10722/149318-
dc.description(DIPPI-C) - Development of Isotopic Proxies for Palaeoenvironmental Interpretation: a Carbon Perspective-
dc.description.abstractThe bulk organic carbon isotope (δ13C), as the conventional indicator of the C3 and C4 vegetation change, turns relatively contentious in the application of palaeoclimate reconstruction from the lacustrine sediments due to the similar δ13C value between C3 and aquatic plants, particularly in the eutrophic lakes. A long successive lacustrine sequence from Tianyang Maar Lake, locating in the tropical region of South China, has complex organic matter (OM) sources due to relatively high inputs from the aquatic macrophytes and diatoms. We examined the n-alkanes concentration of 80 selected samples from the Tianyangcore, as an additional index to assess the paleovegetation and lake-level changes. The n-alkanes results show some distributional patterns of compounds with carbon numbers ranging from C15 to C39. These patterns indicate differences in OM sources and relative contributions from higher and lower plants, improving the interpretation of δ13C records of changes in climate and depositional conditions. Meanwhile, more details of the aquatic macrophyte and diatom inputs revealed by the n-alkanes based proxies (TAR, Paq) replenish the evidence of the lake-level changes during the evolution history of Tianyang Lake.-
dc.languageengen_US
dc.publisherDurham University.-
dc.relation.ispartofAbstract Bok of the 1st DIPPI-C Workshop, 2012en_US
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectAsian monsoon-
dc.subjectδ13C-
dc.subjectN-alkanes-
dc.subjectTAR-
dc.subjectPaq-
dc.subjectLake-level-
dc.titleAn examination of the molecular distribution of a tropical lake sediment sequence to assess organic carbon records of climate and environmental changesen_US
dc.typeConference_Paperen_US
dc.identifier.emailWang, N: ningwang@HKUSUC.hku.hken_US
dc.identifier.emailZong, Y: yqzong@hku.hken_US
dc.identifier.emailBrodie, CR: brodie@hku.hk-
dc.identifier.authorityZong, Y=rp00846en_US
dc.description.naturepostprint-
dc.identifier.hkuros200180en_US
dc.identifier.spage32-
dc.identifier.epage32-
dc.publisher.placeUnited Kingdom-
dc.description.otherThe 1st DIPPI-C Workshop, Durham, UK., 8-10 May 2012. In Abstract Bok of the 1st DIPPI-C Workshop, 2012, p. 32-

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