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Dr Jonathan Tyler
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I am a palaeoclimatologist and isotope geochemist, with an interest in developing the tools used to reconstruct past climates through studying the modern world. I am currently interested in climate variability in Australia during the 'Common Era' - the last 2000 years - for which period continental Australia has critically limited data coverage. I continue to work on projects aimed at understanding climate variability and landscape change in Antarctica, Japan and the United Kingdom.
During my career I have worked with a variety of techniques, both geochemical and palaeoecological, including cutting edge techniques such as oxygen and silicon isotopes in biogenic silica, carbon and nitrogen isotope analysis of sedimentary chlorins and branched GDGTs as a proxy for surface air temperature and soil pH. My work has involved sediment analysis, field monitoring of modern lake systems and experimental analysis of diatoms and haptophytes (siliceous and calcareous algae) in culture. I am increasingly concerned with the numerical analysis of sedimentary timeseries and contemporary data, and have recently conducted a large scale data synthesis of Australian climate records for the last 2000 years.
I am a member of the American Geophysical Union, and a PAGES 2K (PAst Global changES 2000 year project) data manager for the Australian region.
Barr, C., Tibby, J., Gell, P., Tyler, J.J., Zawadzki, A., Jacobsen, G.E. (2014) Climate variability in south-eastern Australia over the last 1500 years inferred from the high-resolution diatom records of two crater lakes. Quaternary Science Reviews 95: 115-131.
Stevenson, E., Hermoso, M., Rickaby, R., Tyler, J.J., Minoletti, F., Parkinson, I., Mokadem, F. and Burton, K. (2014) Controls on stable strontium isotope fractionation in coccolithophores with implications for the marine Sr cycle. Geochimica et Cosmochimica Acta 128: 225-235.
Pearson, E., Juggins, S. and Tyler, J.J. (2014) Ultrahigh resolution total organic carbon analysis using Fourier Transform Near Infrared Reflectance Spectroscopy (FT-NIRS). Geochemistry, Geophysics, Geosystems 15(1): 292-301.
Mills, K., Ryves, D., Anderson, N.J., Bryant, C.L. and Tyler, J.J. (2013) Expressions of climate perturbations in western Ugandan crater lake sediment records during the last 1000 yr. Climates of the Past 9: 5183-5226.
von Gunten, L., Anderson, D.M., Chase, B., Curran, M., Gergis, J., Gille, E.P., Gross, W., Hanhijärvi, S., Kaufman, D.S., Kiefer, T., McKay, N.P., Mundo, I., Neukom, R., Sano, M., Shah, A., Tyler, J.J., Viau, A., Wagner, S., Wahl, E.R. and Willard, D. (2013) The backbone of PAGES 2k: data management and archiving. PAGES news 21(2): 86.
Tyler, J.J. (2013) Silicon isotopes in diatoms. Encyclopaedia of Quaternary Science. Elsevier, Amsterdam.
Takano, Y., Tyler, J.J., Kojima, H, Yokoyama, Y., Tanabe, Y., Sato, T., Ogawa, N.O., Ohkouchi, N. and Fukui, M. (2012) Holocene lake development and glacial-isostatic uplift at Lake Skallen and Lake Oyako, Lützow-Holm Bay, East Antarctica: Based on biogeochemical facies and molecular signatures. Applied Geochemistry 27(12): 2546-2559.
Chapligin, B., Leng, M., Webb, E., Alexandre, A., Dodd, J., Ijiri, A., Luecke, A., Shemesh, A., Abelmann, A., Herzschuh, U., Longstaffe, F., Meyer, H., Moschen, R., Okazaki, Y., Rees, N., Sharp, Z., Sloane, H., Sonzogni, C., Swann, G., Sylvestre, F., Tyler, J.J., Yam, R. (2011) Inter-laboratory comparison of oxygen isotopes from biogenic silica. Geochimica et Cosmochimica Acta 75 (22): 7242-7256. doi:10.1016/j.gca.2011.08.011.
Tyler, J.J., Kashiyama, Y., Ohkouchi, N., Ogawa, N., Yokoyama, Y., Chikaraishi, Y., Staff, R., Ikehara, M., Bronk Ramsey, C., Bryant, C., Brock, F., Gotanda, K., Haraguchi, T., Yonenobu, H. and Nakagawa, T. (2010) Tracking aquatic change using chlorin specific carbon and nitrogen isotopes: the last glacial-interglacial transition at Lake Suigetsu, Japan. Geochemistry, Geophysics, Geosystems 11(9), Q09010. DOI: 10.1029/2010GC003186.
Tyler, J.J., Nederbragt, S.J., Jones, V.J. and Thurow, J.W. (2010) Assessing past temperature and soil pH estimates from bacterial tetraether membrane lipids: evidence from the recent lake sediments of Lochnagar, Scotland. Journal of Geophysical Research – Biogeosciences 115, G01015. DOI:10.1029/2009JG001109.
Leng, M.J., Swann, G.E.A., Hodson, M.J., Tyler, J.J., Patwardhan, S.V. and Sloane, H. (2009) The potential use of silicon isotope composition of biogenic silica as a proxy for environmental change. Silicon 1: 65-77.
Tyler, J.J., Leng, M.J. and Sloane, H.J. (2008) Oxygen isotope ratios of sedimentary biogenic silica reflect a continental-scale climate gradient. Journal of Quaternary Science 23: 341-350.
Brewer, T.S., Leng, M.J., Mackay, A.W., Lamb, A.L., Tyler, J.J. and Marsh, N.G. (2008) Unravelling the contamination signatures in biogenic silica: the role of major and trace element geochemistry. Journal of Quaternary Science 23: 321-330.
Tyler, J.J., Leng, M.J. and Arrowsmith, C. (2007) Seasonality and the isotope hydrology of Lochnagar, a Scottish mountain lake: implications for palaeoclimate research. The Holocene 17(6): 717-727.
Tyler, J.J., Leng, M.J. and Sloane, H.J. (2007) The effects of organic removal treatment on the integrity of δ18O measurements from biogenic silica. Journal of Paleolimnology 37: 491-497.
Flower, R.J., Monteith, D.T., Tyler, J.J., Shilland, E. and Pla, S. (2007) The aquatic flora of Lochnagar. In: Rose, N.L. (ed) Lochnagar: The natural history of a mountain lake. Springer. Dordrecht.
As a member of the Suigetsu 2006 Project (www.suigetsu.org), I am a recognised contributor to the following publications under the group authorship "Suigetsu 2006 Project Members":
Scholaut, G., Brauer, A., Marshall, M.H., Nakagawa, T., Staff, R.A., Bronk Ramsey, C., Lamb, H.F., Bryant, C.L., Naumann, R., Dulski, P., Brock, F., Yokoyama, Y., Tada, R., Haraguchi, T. and Suigetsu 2006 Project Members. (2014) Event layers in the Japanese Lake Suigetsu ‘SG06’ sediment core: description, interpretation and climatic implications. Quaternary Science Reviews 83:157-170.
Demske et al. and Suigetsu 2006 Project Members (2013) Atlas of pollen, spores and further non-pollen palynomorphs recorded in the glacial-interglacial late Quaternary sediments of Lake Suigetsu, central Japan. Quaternary International 290-291: 164-238.
Nakagawa, T., Kitagawa, H., Payne, R., Tarasov, P., Demske, D. and Suigetsu 2006 Project Members (2013) A standard sample method for controlling microfossil data precision: A proposal for higher data quality and greater opportunities for collaboration. Quaternary International 290-291: 239-244.
Smith, V., Staff, R.A., Blockley, S., Bronk Ramsey, C., Nakagawa, T., Mark, D.F., Takemura, K., Danhara, T. and Suigetsu 2006 Project Members. (2013) Identification and correlation of visible tephras in the Lake Suigetsu SG06 sedimentary archive, Japan: chronostratigraphic markers for synchronizing of east Asian/west Pacific palaeoclimatic records across the last 150 ka. Quaternary Science Reviews 67: 127-137.
Staff, R.A., Nakagawa, T., Scholaut, G., Marshall, M., Brauer, A., Lamb, H.F., Bronk Ramsey, C., Bryant, C., Brock, F., Kitagawa, H., van der Plicht, J., Payne, R., Smith, V., Mark, D., MacLeod, A., Blockley, S.P.E., Schwenninger, J-L., Tarasov, P., Haraguchi, T., Gotanda, K., Yonenobu, H., Yokoyama, Y. and Suigetsu 2006 Project Members (2013) The multiple chronological techniques applied to the Lake Suigetsu SG06 sediment core, central Japan. Boreas 42(2): 259-266.
Staff, R.A., Scholaut, G., Bronk Ramsey, C., Brock, F., Bryant, C.L., Kitagawa, H., van der Plicht, J., Marshall, M., Brauer, A., Lamb, H.F., Payne, R.L., Tarasov, P.E., Haraguchi, T., Gotanda, K., Yonenobu, H., Yokoyama, Y., Nakagawa, T. and Suigeusu 2006 Project Members (2013) Integration of the old and new Lake Suigetsu (Japan) Terrestrial Radiocarbon Calibration Data Sets. Radiocarbon 55(4): 2049-2058.
Nakagawa, T. and Suigetsu 2006 Proeject Members (2013) Lake Suigetsu 2006 Varved Sediment Core Project. PAGES News 20(2): 70-71.
Marshall et al. and Suigetsu 2006 Project Members (2012) A novel approach to varve counting using μXRF and X-radiography in combination with thin-section microscopy, applied to the Late Glacial chronology from Lake Suigetsu, Japan. Quaternary Geochronology. 13, 70-80.
Nakagawa et al. and Suigetsu 2006 Project Members (2012) SG06, a fully continuous and varved sediment core from Lake Suigetsu, Japan: stratigraphy and potential for improving the radiocarbon calibration model and understanding of late Quaternary climate changes. Quaternary Science Reviews 36, 164-176.
Schlolaut et al. and Suigetsu 2006 Project Members (2012) A novel, automated method for varve interpolation using varve frequency distributions and its application to the Late Glacial chronology from Lake Suigetsu, Japan. Quaternary Geochronology. 13, 52-69.
Kossler et al. and Suigetsu 2006 Project Members (2011) Onset and termination of the late-glacial climate reversal in the high-resolution diatom and sedimentary records from the annually laminated SG06 core from Lake Suigetsu, Japan. Palaeogeography, Palaeoclimatology, Palaeoecology 306 (3-4), 103-115
Smith et al. and Suigetsu 2006 Project Members (2011) Toward establishing precise 40Ar/39Ar chronologies for Late Pleistocene palaeoclimate archives: an example from the Lake Suigetsu (Japan) sedimentary record. Quaternary Science Reviews 30 (21-22), 2845-2850
Staff et al. and Suigetsu 2006 Project Members (2011) New 14C determinations from Lake Suigetsu, Japan: 12,000 to 0 cal BP. Radiocarbon 53 (3), 511-528
Bronk Ramsey et al. and Suigetsu 2006 Project Members (2010) Developments in the calibration and modeling of radiocarbon dates. Radiocarbon 52 (3), 953-961
Staff et al. and Suigetsu 2006 Project Members (2010) A re-analysis of the Lake Suigetsu terrestrial radiocarbon calibration dataset. Nuclear Instruments and Methods in Physics Research B 268, 960-965
Francus et al. and Suigetsu 2006 Project Members (2009) High-resolution X-ray fluorescence core scanning: applications in paleolimnology. PAGES Newsletter 17 (3), 93-96
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