All Outputs (62)

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.

Urbanization and seasonality strengthens the CO 2 capacity of the Red River Delta, Vietnam (2022)
Journal Article
Salgado, J., Duc, T. A., Nga, D. T., Panizzo, V. N., Bass, A. M., Zheng, Y., …McGowan, S. (2022). Urbanization and seasonality strengthens the CO 2 capacity of the Red River Delta, Vietnam. Environmental Research Letters, 17(10), Article 104052. https://doi.org/10.1088/1748-9326/ac9705

Tropical rivers are dynamic CO2 sources. Regional patterns in the partial pressure of CO2 (pCO2) and relationships with other a/biotic factors in densely populated and rapidly developing river delta regions of Southeast Asia are still poorly constrai... Read More about Urbanization and seasonality strengthens the CO 2 capacity of the Red River Delta, Vietnam.

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.

Silicic Acid Cycling in the Bering Sea During the Mid-Pleistocene Transition (2022)
Journal Article
Worne, S., Swann, G. E., Kender, S., Lacey, J. H., & Leng, M. J. (2022). Silicic Acid Cycling in the Bering Sea During the Mid-Pleistocene Transition. Paleoceanography and Paleoclimatology, 37(2), Article e2021PA004284. https://doi.org/10.1029/2021PA004284

The rate of deep-ocean carbon burial is considered important for modulating glacial-interglacial atmospheric CO2 concentrations and global climate during the Quaternary. It has been suggested that glacial iron fertilization and increased efficiency o... Read More about Silicic Acid Cycling in the Bering Sea During the Mid-Pleistocene Transition.

Anthropocene climate warming enhances autochthonous carbon cycling in an upland Arctic lake, Disko Island, West Greenland (2021)
Journal Article
Stevenson, M. A., Mcgowan, S., Pearson, E. J., Swann, G. E., Leng, M. J., Jones, V. J., …Whiteford, E. (2021). Anthropocene climate warming enhances autochthonous carbon cycling in an upland Arctic lake, Disko Island, West Greenland. Biogeosciences, 18(8), 2465-2485. https://doi.org/10.5194/bg-18-2465-2021

The Arctic is rapidly changing, disrupting biogeochemical cycles and the processing, delivery and sedimentation of carbon (C), in linked terrestrial-aquatic systems. In this investigation, we coupled a hydrogeomorphic assessment of catchment soils, s... Read More about Anthropocene climate warming enhances autochthonous carbon cycling in an upland Arctic lake, Disko Island, West Greenland.

Using stable isotopes to estimate young water fractions in a heavily regulated, tropical lowland river basin (2020)
Journal Article
Trinh, A. D., Do, T. N., Panizzo, V. N., McGowan, S., & Leng, M. J. (2020). Using stable isotopes to estimate young water fractions in a heavily regulated, tropical lowland river basin. Hydrological Processes, 34(22), 4239-4250. https://doi.org/10.1002/hyp.13878

© 2020 John Wiley & Sons Ltd The young water fraction of streamflow (Fyw), an important hydrological variable, has been calculated for the first time, for a monsoon-fed coastal catchment in northern Vietnam. Oxygen stable isotopes (δ18O) from six r... Read More about Using stable isotopes to estimate young water fractions in a heavily regulated, tropical lowland river basin.

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.

Diatoms in a sediment core from a flood pulse wetland in Malaysia record strong responses to human impacts and hydro‐climate over the past 150 years (2020)
Journal Article
Briddon, C. L., McGowan, S., Metcalfe, S. E., Panizzo, V., Lacey, J., Engels, S., …Idris, M. (2020). Diatoms in a sediment core from a flood pulse wetland in Malaysia record strong responses to human impacts and hydro‐climate over the past 150 years. Geo: Geography and Environment, 7(1), Article e00090. https://doi.org/10.1002/geo2.90

Rapid development and climate change in southeast Asia is placing unprecedented pressures on freshwater ecosystems, but long term records of the ecological consequences are rare. Here we examine one basin of Tasik Chini (Malaysia), a UNESCO?designate... Read More about Diatoms in a sediment core from a flood pulse wetland in Malaysia record strong responses to human impacts and hydro‐climate over the past 150 years.

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.

Coupled climate and subarctic Pacific nutrient upwelling over the last 850,000 years (2019)
Journal Article
Worne, S., Kender, S., Swann, G. E., Leng, M. J., & Ravelo, A. C. (2019). Coupled climate and subarctic Pacific nutrient upwelling over the last 850,000 years. Earth and Planetary Science Letters, 522, 87-97. https://doi.org/10.1016/j.epsl.2019.06.028

High latitude deep water upwelling has the potential to control global climate over glacial timescales through the biological pump and ocean-atmosphere CO2 exchange. However, there is currently a lack of continuous long nutrient upwelling records wit... Read More about Coupled climate and subarctic Pacific nutrient upwelling over the last 850,000 years.

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., …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.

Historical atmospheric pollution trends in Southeast Asia inferred from lake sediment records (2018)
Journal Article
Leng, M., Engels, S., Fong, L., Chen, Q., Leng, M. J., McGowan, S., …Yang, H. (2018). Historical atmospheric pollution trends in Southeast Asia inferred from lake sediment records. Environmental Pollution, 235, 907-917. https://doi.org/10.1016/j.envpol.2018.01.007

Fossil fuel combustion leads to increased levels of air pollution, which negatively affects human health as well as the environment. Documented data for Southeast Asia (SEA) show a strong increase in fossil fuel consumption since 1980, but informatio... Read More about Historical atmospheric pollution trends in Southeast Asia inferred from lake sediment records.

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.