All Outputs (53)

South Georgia marine productivity over the past 15 ka and implications for glacial evolution (2024)
Journal Article
Wilkin, J. T., Kender, S., Dejardin, R., Allen, C. S., Peck, V. L., Swann, G. E., …Leng, M. J. (2024). South Georgia marine productivity over the past 15 ka and implications for glacial evolution. Journal of Micropalaeontology, 43(1), 165-186. https://doi.org/10.5194/jm-43-165-2024

The subantarctic islands of South Georgia are located in the Southern Ocean, and they may be sensitive to future climate warming. However, due to a lack of well-dated subantarctic palaeoclimate archives, there is still uncertainty about South Georgia... Read More about South Georgia marine productivity over the past 15 ka and implications for glacial evolution.

A global compilation of diatom silica oxygen isotope records from lake sediment – trends and implications for climate reconstruction (2024)
Journal Article
Meister, P., Alexandre, A., Bailey, H., Barker, P., Biskaborn, B. K., Broadman, E., …Meyer, H. (2024). A global compilation of diatom silica oxygen isotope records from lake sediment – trends and implications for climate reconstruction. Climate of the Past, 20(2), 363-392. https://doi.org/10.5194/cp-20-363-2024

Oxygen isotopes in biogenic silica (δ18OBSi) from lake sediments allow for quantitative reconstruction of past hydroclimate and proxy-model comparison in terrestrial environments. The signals of individual records have been attributed to different fa... Read More about A global compilation of diatom silica oxygen isotope records from lake sediment – trends and implications for climate reconstruction.

Identifying the controls on nitrate and metabolic state within the Red River delta (Vietnam) with the use of stable isotopes (2023)
Journal Article
Smith, A. C., Leng, M. J., McGowan, S., Panizzo, V. N., Ngo, T. T. T., Luu, T. N. M., …Trinh, A. D. (2024). Identifying the controls on nitrate and metabolic state within the Red River delta (Vietnam) with the use of stable isotopes. Journal of Hydrology, 628, Article 130467. https://doi.org/10.1016/j.jhydrol.2023.130467

In many places around the world, anthropogenic activities have resulted in nitrate (NO3−) pollution and changes in the metabolic state of aquatic ecosystems. Here we combined stable isotope and physico-chemical monitoring to assess the sources of NO3... Read More about Identifying the controls on nitrate and metabolic state within the Red River delta (Vietnam) with the use of stable isotopes.

Ecosystem deterioration in the middle Yangtze floodplain lakes over the last two centuries: Evidence from sedimentary pigments (2023)
Journal Article
Zeng, L., Swann, G. E., Leng, M. J., Chen, X., Ji, J., Huang, X., & McGowan, S. (2023). Ecosystem deterioration in the middle Yangtze floodplain lakes over the last two centuries: Evidence from sedimentary pigments. Quaternary Science Reviews, 302, Article 107954. https://doi.org/10.1016/j.quascirev.2023.107954

Water quality of floodplain lakes in the Yangtze region which supports ca. 450 million people is being severely compromised by nutrient pollution, climate change and dam installation resulting from intensive socio-economic development. However, due t... Read More about Ecosystem deterioration in the middle Yangtze floodplain lakes over the last two centuries: Evidence from sedimentary pigments.

Eutrophication has a greater influence on floodplain lake carbon cycling than dam installation across the middle Yangtze region (2022)
Journal Article
Zeng, L., McGowan, S., Swann, G. E., Leng, M. J., & Chen, X. (2022). Eutrophication has a greater influence on floodplain lake carbon cycling than dam installation across the middle Yangtze region. Journal of Hydrology, 614, Article 128510. https://doi.org/10.1016/j.jhydrol.2022.128510

Carbon cycling in shallow floodplain lakes is complex due to variability in delivery of flood-derived allochthonous organic matter (OM). Human activities have potential to significantly modify the carbon balance of lakes by damming which restricts ex... Read More about Eutrophication has a greater influence on floodplain lake carbon cycling than dam installation across the middle Yangtze region.

In flux: Annual transport and deposition of suspended heavy metals and trace elements in the urbanised, tropical Red River Delta, Vietnam (2022)
Journal Article
Roberts, L. R., Do, N. T., Panizzo, V. N., Taylor, S., Watts, M., Hamilton, E., …Salgado, J. (2022). In flux: Annual transport and deposition of suspended heavy metals and trace elements in the urbanised, tropical Red River Delta, Vietnam. Water Research, 224, Article 119053. https://doi.org/10.1016/j.watres.2022.119053

Due to the depositional environment, river deltas are said to act as filters and sinks for pollutants. However, many deltas are also densely populated and rapidly urbanizing, creating new and increased sources of pollutants. These sources pose the ri... Read More about In flux: Annual transport and deposition of suspended heavy metals and trace elements in the urbanised, tropical Red River Delta, Vietnam.

Nutrient availability in the North Pacific region not primarily driven by climate through the Quaternary (2022)
Journal Article
Snelling, A. M., Swann, G. E., Pashley, V., Lacey, J. H., Horstwood, M. S., & Leng, M. J. (2022). Nutrient availability in the North Pacific region not primarily driven by climate through the Quaternary. Palaeogeography, Palaeoclimatology, Palaeoecology, 601, Article 111109. https://doi.org/10.1016/j.palaeo.2022.111109

The subarctic North Pacific Ocean is a relatively understudied region in terms of palaeoclimate, limiting our understanding of how the region has both driven and responded to palaeoenvironmental events. Today, the subarctic North Pacific Ocean is mar... Read More about Nutrient availability in the North Pacific region not primarily driven by climate through the Quaternary.

Response of a low elevation carbonate lake in the Yucatan Peninsula (Mexico) to climatic and human forcings (2022)
Journal Article
Metcalfe, S. E., Holmes, J. A., Jones, M. D., Gonzalez, R. M., Primmer, N. J., Dyrzo, H. M., …Leng, M. J. (2022). Response of a low elevation carbonate lake in the Yucatan Peninsula (Mexico) to climatic and human forcings. Quaternary Science Reviews, 282, Article 107445. https://doi.org/10.1016/j.quascirev.2022.107445

The importance of climate change, specifically drought, across the Maya region in the northern Neotropics, remains a topic of lively debate. Part of this discussion hinges on the coherency of response to climatic variability across different archives... Read More about Response of a low elevation carbonate lake in the Yucatan Peninsula (Mexico) to climatic and human forcings.

Reduced upwelling of nutrient and carbon-rich water in the subarctic Pacific during the Mid-Pleistocene Transition (2020)
Journal Article
Worne, S., Kender, S., Swann, G. E., Leng, M. J., & Ravelo, A. C. (2020). Reduced upwelling of nutrient and carbon-rich water in the subarctic Pacific during the Mid-Pleistocene Transition. Palaeogeography, Palaeoclimatology, Palaeoecology, 555, Article 109845. https://doi.org/10.1016/j.palaeo.2020.109845

© 2020 Reduction in atmospheric pCO2 has been hypothesised as a causal mechanism for the Mid-Pleistocene Transition (MPT), which saw global cooling and increased duration of glacials between 0.6 and 1.2 Ma. Sea ice-modulated high latitude upwelling a... Read More about Reduced upwelling of nutrient and carbon-rich water in the subarctic Pacific during the Mid-Pleistocene Transition.

Extending the tephra and palaeoenvironmental record of the Central Mediterranean back to 430 ka: A new core from Fucino Basin, central Italy (2019)
Journal Article
Giaccio, B., Leicher, N., Mannella, G., Monaco, L., Regattieri, E., Wagner, B., …Tzedakis, P. C. (2019). Extending the tephra and palaeoenvironmental record of the Central Mediterranean back to 430 ka: A new core from Fucino Basin, central Italy. Quaternary Science Reviews, 225, Article 106003. https://doi.org/10.1016/j.quascirev.2019.106003

Here we present the first tephrostratigraphic, palaeomagnetic, and multiproxy data from a new ∼98 m-deep sediment core retrieved from the Fucino Basin, central Italy, spanning the last ∼430 kyr. Palaeoenvironmental proxy data (Ca-XRF, gamma ray and m... Read More about Extending the tephra and palaeoenvironmental record of the Central Mediterranean back to 430 ka: A new core from Fucino Basin, central Italy.

Closure of the Bering Strait caused Mid-Pleistocene Transition cooling (2018)
Journal Article
Kender, S., Ravelo, A. C., Worne, S., Swann, G. E. A., Leng, M. J., Asahi, H., …Hall, I. R. (2018). Closure of the Bering Strait caused Mid-Pleistocene Transition cooling. Nature Communications, 9(1), Article 5386. https://doi.org/10.1038/s41467-018-07828-0

The Mid-Pleistocene Transition (MPT) is characterised by cooling and lengthening glacial cycles from 600–1200 ka, thought to be driven by reductions in glacial CO2 in particular from ~900 ka onwards. Reduced high latitude upwelling, a process that re... Read More about Closure of the Bering Strait caused Mid-Pleistocene Transition cooling.

A landscape perspective of Holocene organic carbon cycling in coastal SW Greenland lake-catchments (2018)
Journal Article
Anderson, N., Leng, M., Osburn, C., Fritz, S., Law, A., & McGowan, S. (2018). A landscape perspective of Holocene organic carbon cycling in coastal SW Greenland lake-catchments. Quaternary Science Reviews, 202, 98-108. https://doi.org/10.1016/j.quascirev.2018.09.006

Arctic organic carbon (OC) stores are substantial and have accumulated over millennia as a function of changes in climate and terrestrial vegetation. Arctic lakes are also important components of the regional C-cycle as they are sites of OC productio... Read More about A landscape perspective of Holocene organic carbon cycling in coastal SW Greenland lake-catchments.

Lake Baikal isotope records of Holocene Central Asian precipitation (2018)
Journal Article
Swann, G. E., Mackay, A. W., Vologina, E., Jones, M. D., Panizzo, V., Leng, M. J., Sloane, H. J., Snelling, A. M., & Sturm, M. (2018). Lake Baikal isotope records of Holocene Central Asian precipitation. Quaternary Science Reviews, 189, https://doi.org/10.1016/j.quascirev.2018.04.013

Climate models currently provide conflicting predictions of future climate change across Central Asia. With concern over the potential for a change in water availability to impact communities and ecosystems across the region, an understanding of hist... Read More about Lake Baikal isotope records of Holocene Central Asian precipitation.

A review of the stable isotope bio-geochemistry of the global silicon cycle and its associated trace elements (2018)
Journal Article
Sutton, J. N., André, L., Cardinal, D., Conley, D. J., de Souza, G. F., Dean, J. R., …Swann, G. E. (2018). A review of the stable isotope bio-geochemistry of the global silicon cycle and its associated trace elements. Frontiers in Earth Science, 5, Article 112. https://doi.org/10.3389/feart.2017.00112

Silicon (Si) is the second most abundant element in the Earth’s crust and is an important nutrient in the ocean. The global Si cycle plays a critical role in regulating primary productivity and carbon cycling on the continents and in the oceans. Deve... Read More about A review of the stable isotope bio-geochemistry of the global silicon cycle and its associated trace elements.

Seasonality of Holocene hydroclimate in the Eastern Mediterranean reconstructed using the oxygen isotope composition of carbonates and diatoms from Lake Nar, central Turkey (2017)
Journal Article
Dean, J. R., Jones, M. D., Leng, M. J., Metcalfe, S. E., Sloane, H. J., Eastwood, W. J., & Roberts, C. N. (2018). Seasonality of Holocene hydroclimate in the Eastern Mediterranean reconstructed using the oxygen isotope composition of carbonates and diatoms from Lake Nar, central Turkey. Holocene, 28(2), https://doi.org/10.1177/0959683617721326

A positive shift in the oxygen isotope composition (δ18O) of lake carbonates in the Eastern Mediterranean from the early to late Holocene is usually interpreted as a change to drier (reduced P/E) conditions. However, it has also been suggested that c... Read More about Seasonality of Holocene hydroclimate in the Eastern Mediterranean reconstructed using the oxygen isotope composition of carbonates and diatoms from Lake Nar, central Turkey.

Sedimentary context and palaeoecology of Gigantoproductus shell beds in the Mississippian Eyam Limestone Formation, Derbyshire carbonate platform, central England (2017)
Journal Article
Nolan, L., Angiolini, L., Jadoul, F., Della Porta, G., Davies, S., Banks, V., Stephenson, M., & Leng, M. J. (in press). Sedimentary context and palaeoecology of Gigantoproductus shell beds in the Mississippian Eyam Limestone Formation, Derbyshire carbonate platform, central England. Proceedings of the Yorkshire Geological Society, https://doi.org/10.1144/pygs2017-393

A sedimentological study was conducted at two localities exposing the Mississippian Eyam Limestone Formation of the Derbyshire carbonate platform, UK. Ricklow Quarry comprises seven facies with diverse skeletal assemblages, representing deposition on... Read More about Sedimentary context and palaeoecology of Gigantoproductus shell beds in the Mississippian Eyam Limestone Formation, Derbyshire carbonate platform, central England.

A late Quaternary record of seasonal sea surface temperatures off southern Africa (2017)
Journal Article
Loftus, E., Sealy, J., Leng, M. J., & Lee-Thorp, J. (2017). A late Quaternary record of seasonal sea surface temperatures off southern Africa. Quaternary Science Reviews, 171, https://doi.org/10.1016/j.quascirev.2017.07.003

The southern Cape coastal region is important for understanding both the behavioural history of modern humans, and regional and global climate dynamics, because it boasts a long archaeological record and occupies a key geographical location near the... Read More about A late Quaternary record of seasonal sea surface temperatures off southern Africa.

Timing recovery after the cretaceous/paleogene boundary: evidence from Brazos River, Texas (2017)
Journal Article
Leighton, A. D., Hart, M. B., Smart, C. W., Leng, M. J., & Hampton, M. (2017). Timing recovery after the cretaceous/paleogene boundary: evidence from Brazos River, Texas. Journal of Foraminiferal Research, 47(3), https://doi.org/10.2113/gsjfr.47.3.229

As part of an on-going re-assessment of the Cretaceous/ Paleogene boundary in the Brazos River area, Falls County, Texas, a number of new exposures have been described. One of these, at River Bank South, provides a near continuous record of the lower... Read More about Timing recovery after the cretaceous/paleogene boundary: evidence from Brazos River, Texas.

The prospectivity of a potential shale gas play: An example from the southern Pennine Basin (central England, UK) (2017)
Journal Article
Hennissen, J. A., Hough, E., Vane, C. H., Leng, M. J., Kemp, S. J., & Stephenson, M. H. (in press). The prospectivity of a potential shale gas play: An example from the southern Pennine Basin (central England, UK). Marine and Petroleum Geology, https://doi.org/10.1016/j.marpetgeo.2017.06.033

During the Serpukhovian (late Mississippian) Stage, the Pennine Basin, now underlying much of northern England, consisted of a series of interlinked sub-basins that developed in response to the crustal extension north of the Hercynic orogenic zone. F... Read More about The prospectivity of a potential shale gas play: An example from the southern Pennine Basin (central England, UK).

Temporal controls on silicic acid utilisation along the West Antarctic Peninsula (2017)
Journal Article
Swann, G. E., Pike, J., Leng, M. J., Sloane, H. J., & Snelling, A. M. (2017). Temporal controls on silicic acid utilisation along the West Antarctic Peninsula. Nature Communications, 14645, https://doi.org/10.1038/ncomms14645

The impact of climatic change along the Antarctica Peninsula has been widely debated in light of atmospheric/oceanic warming and increases in glacial melt over the past half century. Particular concern exists over the impact of these changes on marin... Read More about Temporal controls on silicic acid utilisation along the West Antarctic Peninsula.