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Influence of the ratio of planktonic to benthic diatoms on lacustrine organic matter δ 13 C from Erlongwan maar lake, northeast China (2012)
Journal Article
Wang, L., Mackay, A. W., Leng, M. J., Rioual, P., Panizzo, V. N., Lu, H., …Kendrick, C. P. (2013). Influence of the ratio of planktonic to benthic diatoms on lacustrine organic matter δ 13 C from Erlongwan maar lake, northeast China. Organic Geochemistry, 54, 62-68. https://doi.org/10.1016/j.orggeochem.2012.09.010

Carbon isotope ratio (δ 13 C org ) values of organic matter in lake sediments are commonly used to reconstruct environmental change, but the factors which influence change are varied and complex. Here we report δ 13 C values for sediments from Erlong... Read More about Influence of the ratio of planktonic to benthic diatoms on lacustrine organic matter δ 13 C from Erlongwan maar lake, northeast China.

A combined oxygen and silicon diatom isotope record of Late Quaternary change in Lake El'gygytgyn, North East Siberia (2010)
Journal Article
Swann, G. E., Leng, M. J., Juschus, O., Melles, M., Brigham-Grette, J., & Sloane, H. J. (2010). A combined oxygen and silicon diatom isotope record of Late Quaternary change in Lake El'gygytgyn, North East Siberia. Quaternary Science Reviews, 29(5-6), https://doi.org/10.1016/j.quascirev.2009.11.024

Determining the response of sites within the Arctic Circle to long-term climatic change remains an essential pre-requisite for assessing the susceptibility of these regions to future global warming and Arctic amplification. To date, existing records... Read More about A combined oxygen and silicon diatom isotope record of Late Quaternary change in Lake El'gygytgyn, North East Siberia.

A multiproxy palaeolimnological investigation of Holocene environmental change, between c. 10 700 and 7200 years BP, at Holebudalen, southern Norway (2008)
Journal Article
Panizzo, V. N., Jones, V. J., Birks, H. J., Boyle, J. F., Brooks, S. J., & Leng, M. J. (2008). A multiproxy palaeolimnological investigation of Holocene environmental change, between c. 10 700 and 7200 years BP, at Holebudalen, southern Norway. Holocene, 18(5), 805-817. https://doi.org/10.1177/0959683608089217

Geochemical analyses (x-ray fluorescence, δ13C and C/N ratios) were used to reconstruct early Holocene environments (between 10685 and 7260 cal. yr BP) at a small lake near Holebudalen, southern Norway. Results show a period of increasing stability,... Read More about A multiproxy palaeolimnological investigation of Holocene environmental change, between c. 10 700 and 7200 years BP, at Holebudalen, southern Norway.

Reconstructing hydrological variability in Lake Baikal during MIS 11: An application of oxygen isotope analysis of diatom silica (2008)
Presentation / Conference Contribution
Mackay, A. W., Karabanov, E., Leng, M. J., Sloane, H. J., Morley, D. W., Panizzo, V. N., Khursevich, G., & Williams, D. (2007, April). Reconstructing hydrological variability in Lake Baikal during MIS 11: An application of oxygen isotope analysis of diatom silica. Presented at Isotopes in Biogenic Silica (IBiS), Nottingham, UK

In this paper we reconstruct hydrological variability in Lake Baikal during Marine Isotope Stage 11 (MIS 11) (427-362 ka BP) from oxygen isotope analysis of diatom silica. Highest δ18Odiatom values are found during MIS 11.3, highlighting the dominanc... Read More about Reconstructing hydrological variability in Lake Baikal during MIS 11: An application of oxygen isotope analysis of diatom silica.

Isotope offsets in marine diatom δ18O over the last 200 ka (2008)
Journal Article
Swann, G. E., Leng, M. J., Sloane, H. J., & Maslin, M. A. (2008). Isotope offsets in marine diatom δ18O over the last 200 ka. Journal of Quaternary Science, 23(4), https://doi.org/10.1002/jqs.1185

Previous work has suggested that a species effect may be present in diatom oxygen isotope ratios (δ18Odiatom). While predominantly attributed to be a size related species effect, currently the precise mechanism remains unknown. Here, two size fractio... Read More about Isotope offsets in marine diatom δ18O over the last 200 ka.

A 140-year record of recent changes in aquatic productivity in a remote, tropical alpine lake in the Rwenzori Mountain National Park, Uganda (2007)
Journal Article
Panizzo, V. N., MacKay, A. W., Ssemmanda, I., Taylor, R., Rose, N., & Leng, M. J. (2008). A 140-year record of recent changes in aquatic productivity in a remote, tropical alpine lake in the Rwenzori Mountain National Park, Uganda. Journal of Paleolimnology, 40(1), 325-338. https://doi.org/10.1007/s10933-007-9163-5

Environmental change in many tropical, alpine habitats remains poorly resolved due to an absence of proximate and sustained observations. In the Rwenzori Mountains of East Africa, glaciers have receded rapidly over the last century, and here we asses... Read More about A 140-year record of recent changes in aquatic productivity in a remote, tropical alpine lake in the Rwenzori Mountain National Park, Uganda.

Diatom oxygen isotopes: evidence of a species effect in the sediment record (2007)
Journal Article
Swann, G. E., Leng, M. J., Sloane, H. J., Maslin, M. A., & Onodera, J. (2007). Diatom oxygen isotopes: evidence of a species effect in the sediment record. Geochemistry, Geophysics, Geosystems, 8(6), Article Q06012. https://doi.org/10.1029/2006GC001535

Diatom oxygen isotope measurements are commonly made on bulk mixed species assemblages due to the difficulty in purifying and separating individual taxa. As such, it is essential to understand processes in diatoms which may lead to isotope offsets bo... Read More about Diatom oxygen isotopes: evidence of a species effect in the sediment record.

A high-resolution late Holocene lake isotope record from Turkey and links to North Atlantic and monsoon climate (2006)
Journal Article
Jones, M. D., Roberts, C. N., Leng, M. J., & Türkeş, M. (2006). A high-resolution late Holocene lake isotope record from Turkey and links to North Atlantic and monsoon climate. Geology, 34(5), 361-364. https://doi.org/10.1130/G22407.1

A high resolution proxy record of precipitation and evaporation variability through the past 1700 yr from δ18O analysis of a varved lake sequence from central Turkey shows rapid shifts between dry periods (AD 300–500 and AD 1400–1950) and wetter inte... Read More about A high-resolution late Holocene lake isotope record from Turkey and links to North Atlantic and monsoon climate.

Diatom D18O evidence for the development of the modern halocline system in the subarctic northwest Pacific at the onset of major Northern Hemisphere glaciation (2006)
Journal Article
Swann, G. E., Maslin, M. A., Leng, M. J., Sloane, H. J., & Haug, G. H. (2006). Diatom D18O evidence for the development of the modern halocline system in the subarctic northwest Pacific at the onset of major Northern Hemisphere glaciation. Paleoceanography, 21(PA1009), https://doi.org/10.1029/2005PA001147

Establishing a time frame for the development of the modern halocline and stratified water column in the subarctic North Pacific has significant paleoclimatic implications. Here we present a d18O(diatom) record consisting of only two species that rep... Read More about Diatom D18O evidence for the development of the modern halocline system in the subarctic northwest Pacific at the onset of major Northern Hemisphere glaciation.

A coupled calibration and modelling approach to the understanding of dry-land lake oxygen isotope records (2005)
Journal Article
Jones, M. D., Leng, M. J., Roberts, C. N., Turkes, M., & Moyeed, R. (2005). A coupled calibration and modelling approach to the understanding of dry-land lake oxygen isotope records. Journal of Paleolimnology, 34(3), 391–411. https://doi.org/10.1007/s10933-005-6743-0

Comparisons between climate proxies and instrumental records through the last two centuries are often used to understand better the controls on palaeoarchives and to find relationships that can be used to quantify changes in pre-instrumental climate.... Read More about A coupled calibration and modelling approach to the understanding of dry-land lake oxygen isotope records.

Climatic change in Central Asia during MIS 3/2: a case study using biological responses from Lake Baikal (2005)
Journal Article
Swann, G. E., Mackay, A. W., Leng, M. J., & Demory, F. (2005). Climatic change in Central Asia during MIS 3/2: a case study using biological responses from Lake Baikal. Global and Planetary Change, 44(1-4), https://doi.org/10.1016/j.gloplacha.2004.09.019

A Marine Isotope Stage (MIS) 3/early MIS 2 section from a structural high along the east coast of the North Basin of Lake Baikal was analysed for diatoms, C/N ratios, and organic carbon isotope ratios. Diatoms were present throughout MIS 3 and early... Read More about Climatic change in Central Asia during MIS 3/2: a case study using biological responses from Lake Baikal.

A review of diatom δ18O in palaeoceanography
Journal Article
Swann, G. E., & Leng, M. J. A review of diatom δ18O in palaeoceanography. Quaternary Science Reviews, 28(5-6), https://doi.org/10.1016/j.quascirev.2008.11.002

Measurements of diatom oxygen isotopes (δ18Odiatom) hold the potential to provide an important additional source of palaeoceanographic information in regions depleted in carbonates. However, despite analyses of δ18Odiatom being carried out since the... Read More about A review of diatom δ18O in palaeoceanography.