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Outputs (22)

Non-avian dinosaur eggshell calcite can contain ancient, endogenous amino acids (2023)
Journal Article
Saitta, E. T., Vinther, J., Crisp, M. K., Abbott, G. D., Wheeler, L., Presslee, S., …Penkman, K. E. (2024). Non-avian dinosaur eggshell calcite can contain ancient, endogenous amino acids. Geochimica et Cosmochimica Acta, 365, 1-20. https://doi.org/10.1016/j.gca.2023.11.016

Proteins are the most stable of the macromolecules that carry genetic information over long periods of time. Closed systems are more likely to retain endogenous proteins or their degradation products. Amino acid racemisation data in experimental and... Read More about Non-avian dinosaur eggshell calcite can contain ancient, endogenous amino acids.

Unprecedented sea-ice minima enhances algal production deposited at the Arctic seafloor (2023)
Journal Article
Stevenson, M. A., Airs, R. L., & Abbott, G. D. (2023). Unprecedented sea-ice minima enhances algal production deposited at the Arctic seafloor. Environmental Research Letters, 18(11), Article 114046. https://doi.org/10.1088/1748-9326/ad044a

Sea-ice in the Arctic is declining, with 2018 a particularly low year for ice extent, driven by anomalously warm atmospheric circulation in winter 2017/18. This is consistent with a multi-decadal trend to an earlier ice-free Barents Sea as climate ch... Read More about Unprecedented sea-ice minima enhances algal production deposited at the Arctic seafloor.

Biomarker proxies for reconstructing Quaternary climate and environmental change (2023)
Journal Article
McClymont, E. L., Mackay, H., Stevenson, M. A., Damm-Johnsen, T., Honan, E. M., Penny, C. E., & Cole, Y. A. (2023). Biomarker proxies for reconstructing Quaternary climate and environmental change. Journal of Quaternary Science, 38(7), 991-1024. https://doi.org/10.1002/jqs.3559

To reconstruct past environmental changes, a range of indirect or proxy approaches can be applied to Quaternary archives. Here, we review the complementary and novel insights which have been provided by the analysis of chemical fossils (biomarkers).... Read More about Biomarker proxies for reconstructing Quaternary climate and environmental change.

New evidence for preservation of contemporary marine organic carbon by iron in Arctic shelf sediments (2022)
Journal Article
Faust, J. C., Ascough, P., Hilton, R. G., Stevenson, M. A., Hendry, K. R., & Marz, C. (2023). New evidence for preservation of contemporary marine organic carbon by iron in Arctic shelf sediments. Environmental Research Letters, 18(1), Article 014006. https://doi.org/10.1088/1748-9326/aca780

The protection of organic carbon through association with iron minerals (FeR) is an important factor in its stabilisation, long-term storage, and burial efficiency in marine sediments. However, large uncertainties still exist concerning the sources,... Read More about New evidence for preservation of contemporary marine organic carbon by iron in Arctic shelf sediments.

Heterogeneity in diatom diversity response to decadal scale eutrophication in floodplain lakes of the middle Yangtze reaches (2022)
Journal Article
Chen, X., Liang, J., Zeng, L., Cao, Y., & Stevenson, M. A. (2022). Heterogeneity in diatom diversity response to decadal scale eutrophication in floodplain lakes of the middle Yangtze reaches. Journal of Environmental Management, 322, Article 116164. https://doi.org/10.1016/j.jenvman.2022.116164

Eutrophication substantially alters biotic communities and has become a major threat to biodiversity conservation in lake ecosystems. However, little is known about how long-term diversity dynamics respond to nutrient enrichment among lakes in differ... Read More about Heterogeneity in diatom diversity response to decadal scale eutrophication in floodplain lakes of the middle Yangtze reaches.

Biogeochemical consequences of a changing Arctic shelf seafloor ecosystem (2021)
Journal Article
März, C., Freitas, F. S., Faust, J. C., Godbold, J. A., Henley, S. F., Tessin, A. C., …Widdicombe, S. (2022). Biogeochemical consequences of a changing Arctic shelf seafloor ecosystem. AMBIO: A Journal of the Human Environment, 51, 370-382. https://doi.org/10.1007/s13280-021-01638-3

Unprecedented and dramatic transformations are occurring in the Arctic in response to climate change, but academic, public, and political discourse has disproportionately focussed on the most visible and direct aspects of change, including sea ice me... Read More about Biogeochemical consequences of a changing Arctic shelf seafloor ecosystem.

Transformation of organic matter in a Barents Sea sediment profile: coupled geochemical and microbiological processes (2020)
Journal Article
Stevenson, M. A., Faust, J. C., Andrade, L. L., Freitas, F. S., Gray, N. D., Tait, K., …Abbott, G. D. (2020). Transformation of organic matter in a Barents Sea sediment profile: coupled geochemical and microbiological processes. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 378(2181), https://doi.org/10.1098/rsta.2020.0223

Process-based, mechanistic investigations of organic matter transformation and diagenesis directly beneath the sediment–water interface (SWI) in Arctic continental shelves are vital as these regions are at greatest risk of future change. This is in p... Read More about Transformation of organic matter in a Barents Sea sediment profile: coupled geochemical and microbiological processes.