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Chinese Science Bulletin

, Volume 58, Issue 7, pp 803–808 | Cite as

Calibration of the U 37 K′ index of long-chain alkenones with the in-situ water temperature in Lake Qinghai in the Tibetan Plateau

  • Zheng WangEmail author
  • WeiGuo Liu
Open Access
Article Geology

Abstract

Long-chain alkenones (LCAs) can potentially be used as indicators to understand past variations in lacustrine environments. Previous research has suggested that the relationship between the temperature and the unsaturation index of LCAs should be calibrated individually, because of the possible variations in the alkenone-producing algal species in the lacustrine environment. In this work, we have calibrated U 37 K′ of water filter samples against the in-situ water temperature in Lake Qinghai, Tibetan Plateau. There are significant relationships between U 37 K′ and the water temperature, a non-linear relationship was derived. Because the U 37 K′ values did not respond sensitively at lower temperatures, we suggested that a quadratic regression (U 37 K′ =0.0011×T 2-0.0201×T+0.1959, n=15, r 2=0.74) was appropriate than linear regression to represent the relationship between the in-situ temperatures and U 37 K′ . Meanwhile, the U 37 K correlation relationship was not more significant than U 37 K′ index in our study. Because of the C37:4 effects by salinity change, we suggest U 37 K is not as robust as the U 37 K′ index as a temperature proxy, at least for the salt lake in the Tibetan Plateau. The calibration of the U 37 K′ index in this work has provided a new understanding of historic climatic changes in the Tibetan Plateau.

Keywords

U37K′ index in-situ temperature Lake Qinghai 

References

  1. 1.
    Brassell S C, Eglinton G, Marlowe I T, et al. Molecular stratigraphy: A new tool for climatic assessment. Nature, 1986, 320: 129–133CrossRefGoogle Scholar
  2. 2.
    Prahl F G, Wakeham S G. Calibration of unsaturation patterns in long-chain ketone compositions for palaeotemperature assessment. Nature, 1987, 330: 367–369CrossRefGoogle Scholar
  3. 3.
    Volkman J K, Barrerr S M, Blackburn S I, et al. Alkenones in Gephyrocapsa oceanica: Implications for studies of paleoclimate. Geochim Cosmochim Acta, 1995, 59: 513–520CrossRefGoogle Scholar
  4. 4.
    Bard E, Rostek F, Sonzogni C. Interhemispheric synchrony of the last deglaciation inferred from alkenone palaeothermometry. Nature, 1997, 385: 707–710CrossRefGoogle Scholar
  5. 5.
    Kienast M, Steinke S, Stattegge K, et al. Synchronous tropical south China Sea SST change and greenland warming during deglaciation. Science, 2001, 291: 2132–2134CrossRefGoogle Scholar
  6. 6.
    Koutavas A, Lynch-Stieglitz L, Marchitto T M, et al. El Niño-like pattern in ice age tropical Pacific sea surface temperature. Science, 2002, 297: 226–230CrossRefGoogle Scholar
  7. 7.
    Li L, Wang H, Li J R, et al. Changes in sea surface temperature in western South China Sea over the past 450 ka. Chin Sci Bull, 2009, 54: 3335–3343CrossRefGoogle Scholar
  8. 8.
    Cranwell P A. Long-chain unsaturated ketones in recent lacustrine sediments. Geochim Cosmochim Acta, 1985, 49: 1545–1551CrossRefGoogle Scholar
  9. 9.
    Li J, Philp R P, Pu F, et al. Long-chain alkenones in Qinghai Lake sediments. Geochim Cosmochim Acta, 1996, 60: 235–241CrossRefGoogle Scholar
  10. 10.
    Thiel V, Jenisch A, Landmann G, et al. Unusual distributions of long-chain alkenones and tetrahymanol from the highly alkaline Lake Van, Turkey. Geochim Cosmochim Acta, 1997, 61: 2053–2064CrossRefGoogle Scholar
  11. 11.
    Innes H E, Bishop A N, Fox P A, et al. Early diagenesis of bacteriohopanoids in recent sediments of Lake Pollen, Norway. Org Geochem, 1998, 29: 1285–1295CrossRefGoogle Scholar
  12. 12.
    Sheng G Y, Cai K Q, Yang X X, et al. Long-chain alkenones in Hetong Qagan Nur Lake sediments and its paleoclimatic implications. Chin Sci Bull, 1998, 43: 1090–1094CrossRefGoogle Scholar
  13. 13.
    Zink K G, Leythaeuser D, Melkonian M, et al. Temperature dependency of long-chain alkenone distributions in recent to fossil limnic sediments and in lake waters. Geochim Cosmochim Acta, 2001, 65: 253–265CrossRefGoogle Scholar
  14. 14.
    Sun Q, Chu G Q, Li S Q, et al. Long-chain alkenones in sulfate lakes and its paleoclimatic implications. Chin Sci Bull, 2004, 49: 2082–2086CrossRefGoogle Scholar
  15. 15.
    Chu G Q, Sun Q, Li S Q, et al. Long-chain alkenone distributions and temperature dependence in lacustrine surface sediments from China. Geochim Cosmochim Acta, 2005, 69: 4985–5003CrossRefGoogle Scholar
  16. 16.
    Sun Q, Chu G Q, Liu G X, et al. Calibration of alkenone unsaturation index with growth temperature for a lacustrine species, Chrysotila lamellosa (Haptophyceae). Org Geochem, 2007, 38: 1226–1234CrossRefGoogle Scholar
  17. 17.
    Liu W G, Liu Z H, Fu M Y, et al. Distribution of the C37 tetra-unsaturated alkenone in Lake Qinghai, China: A potential lake salinity indicator. Geochim Cosmochim Acta, 2008, 72: 988–997CrossRefGoogle Scholar
  18. 18.
    Pearson E J, Juggins S, Farrimond P, et al. Distribution and significance of long-chain alkenones as salinity and temperature indicators in Spanish saline lake sediments. Geochim Cosmochim Acta, 2008, 72: 4035–4046CrossRefGoogle Scholar
  19. 19.
    Jaraula C M B, Brassell S C, Morgan-Kiss R M, et al. Origin and tentative identification of tri to pentaunsaturated ketones in sediments from Lake Fryxell, East Antarctica. Org Geochem, 2010, 41: 386–397CrossRefGoogle Scholar
  20. 20.
    Toney J L, Huang Y, Fritz S C, et al. Climatic and environmental controls on the occurrence and distributions of long chain alkenones in lakes of the interior United States. Geochim Cosmochim Acta, 2010, 74: 1563–1578CrossRefGoogle Scholar
  21. 21.
    Liu W G, Liu Z H, Wang H Y, et al. Salinity control on long-chain alkenone distributions in lake surface waters and sediments of the northern Qinghai-Tibetan Plateau, China. Geochim Cosmochim Acta, 2011, 75: 1693–1703CrossRefGoogle Scholar
  22. 22.
    Toney J L, Leavitt P R, Huang Y. Alkenones are common in prairie lakes of interior Canada. Org Geochem, 2011, 42: 707–712CrossRefGoogle Scholar
  23. 23.
    D’Andrea W J, Huang Y, Fritz S C, et al. Abrupt Holocene climate change as an important factor for human migration in West Greenland. Proc Natl Acad Sci USA, 2011, 108: 9765–9769CrossRefGoogle Scholar
  24. 24.
    Coolen M J L, Muyzer G, Rijpstra W L C, et al. Combined DNA and lipid analyses of sediments reveal changes in Holocene haptophyte and diatom populations in an Antarctic lake. Earth Planet Sci Lett, 2004, 223: 225–239CrossRefGoogle Scholar
  25. 25.
    D’Andrea W J, Lage M, Martiny J B H, et al. Alkenone producers inferred from well-preserved 18S rDNA in Greenland lake sediments. J Geophys Res, 2006, 111: G03013CrossRefGoogle Scholar
  26. 26.
    An Z S, Kutzbach J E, Prell W L, et al. Evolution of Asian monsoons and phased uplift of the Himalaya-Tibetan plateau since Late Miocene times. Nature, 2001, 411: 62–66CrossRefGoogle Scholar
  27. 27.
    Herzschuh U, Kurschner H, Mischke S. Temperature variability and vertical vegetation belt shifts during the last ∼50000 yr in the Qilian Mountains (NE margin of the Tibetan Plateau, China). Quat Res, 2006, 66: 133–146CrossRefGoogle Scholar
  28. 28.
    Fu M Y, Liu W G, Li X Z, et al. The distribution of long-chain alkenones in modern lacustrine sediments in the Lake Qinghai and lakes from the Qaidam Basin (in Chinese). J Lake Sci, 2008, 20: 285–290Google Scholar
  29. 29.
    Liu Z, Henderson A G, Huang Y. Alkenone-based reconstruction of late-Holocene surface temperature and salinity changes in Lake Qinghai, China. Geophys Res Lett, 2006, 33: L09707CrossRefGoogle Scholar
  30. 30.
    Lanzhou Branch of Chinese Academy of Sciences. Evolution of Recent Environment in Qinghai Lake and Its Prediction (in Chinese). Beijing: Science Press, 1994Google Scholar
  31. 31.
    Goni M P, Woodworth H L, Aceves R C, et al. Generation, transport, and preservation of the alkenone-based U 37K′ sea surface temperature index in the water column and sediments of the Cariaco Basin (Venezuela). Glob Biogeochem Cycles, 2004, 18: 1–21CrossRefGoogle Scholar
  32. 32.
    Mercer J L, Zhao M X, Colman S M, et al. Seasonal variations of alkenones and UK37 in the Chesapeake Bay water column. Estuar Coast Shelf S, 2005, 63: 675–682CrossRefGoogle Scholar
  33. 33.
    Sun Q, Chu G Q, Liu G X, et al. The occurrence and distribution of long chain alkenones in lakes (in Chinese). Acta Geosci Sin, 2010, 31: 485–494Google Scholar
  34. 34.
    Livingstone D M, Lotter A F, Walker I R. The decrease in summer surface water temperature with altitude in Swiss Alpine lakes: A comparison with air temperature lapse rates. Arct Antarct Alp Res, 1999, 31: 341–352CrossRefGoogle Scholar
  35. 35.
    Livingstone D M, Lotter A F. The relationship between air and water temperatures in lakes of the Swiss Plateau: A case study with palaeolimnological implication. J Paleolimnol, 1998, 19: 181–198CrossRefGoogle Scholar
  36. 36.
    Wood T M, Hoilman G R, Lindenberg M K. Water-quality conditions in Upper Klamath Lake, Oregon, 2002-04: U.S. Geological Survey Scientific Investigations Report, 2006, 2006-5209: 54Google Scholar
  37. 37.
    Hoilman G R, Lindenberg M K, Wood T M. Water quality conditions in Upper Klamath and Agency Lakes, Oregon, 2005: U.S. Geological Survey Scientific Investigations Report, 2008, 2008-5026: 44Google Scholar
  38. 38.
    Rosell-Melé A. Interhemispheric appraisal of the value of alkenone indices as temperature and salinity proxies in high-latitude locations. Paleoceanography, 1998, 13: 694–703CrossRefGoogle Scholar
  39. 39.
    Sicre M A, Bard E, Ezat U, et al. Alkenone distributions in the North Atlantic and Nordic sea surface waters. Geochem Geophys Geosyst, 2002, 3: 1013CrossRefGoogle Scholar
  40. 40.
    Muller P J, Kirst G, Ruhland G, et al. Calibration of the alkenone palaeotemperature index U 37K′ based on core-tops from the eastern South Atlantic and the global ocean (60–60°C). Geochim Cosmochim Acta, 1998, 62: 1757–1772CrossRefGoogle Scholar
  41. 41.
    Marshall H G. Chesapeake Bay phytoplankton: I. Composition. P Biol Soc Wash, 1994, 107: 573–585Google Scholar
  42. 42.
    Rontani J F, Beker B, Volkman J K. Long-chain alkenones and related compounds in the benthic haptophyte Chrysotila lamellosa Anand HAP 17. Phytochemistry, 2004, 65: 117–126CrossRefGoogle Scholar

Copyright information

© The Author(s) 2012

Authors and Affiliations

  1. 1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth EnvironmentChinese Academy of SciencesXi’anChina
  2. 2.School of Human Settlement and Civil EngineeringXi’an Jiaotong UniversityXi’anChina

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