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Professor Darren Grocke's Outputs (13)

Turbidity Currents Can Dictate Organic Carbon Fluxes Across River‐Fed Fjords: An Example From Bute Inlet (BC, Canada) (2022)
Journal Article
Hage, S., Galy, V., Cartigny, M., Heerema, C., Heijnen, M., Acikalin, S., Clare, M., Giesbrecht, I., Gröcke, D., Hendry, A., Hilton, R., Hubbard, S., Hunt, J., Lintern, D., McGhee, C., Parsons, D., Pope, E., Stacey, C., Sumner, E., Tank, S., & Talling, P. (2022). Turbidity Currents Can Dictate Organic Carbon Fluxes Across River‐Fed Fjords: An Example From Bute Inlet (BC, Canada). Journal of Geophysical Research: Biogeosciences, 127(6), https://doi.org/10.1029/2022jg006824

The delivery and burial of terrestrial particulate organic carbon (OC) in marine sediments is important to quantify, because this OC is a food resource for benthic communities, and if buried it may lower the concentrations of atmospheric CO2 over geo... Read More about Turbidity Currents Can Dictate Organic Carbon Fluxes Across River‐Fed Fjords: An Example From Bute Inlet (BC, Canada).

Summer sea-ice variability on the Antarctic margin during the last glacial period reconstructed from snow petrel (Pagodroma nivea) stomach-oil deposits (2022)
Journal Article
McClymont, E. L., Bentley, M. J., Hodgson, D. A., Spencer-Jones, C. L., Wardley, T., West, M. D., Croudace, I. W., Berg, S., Gröcke, D. R., Kuhn, G., Jamieson, S. S., Sime, L., & Phillips, R. A. (2022). Summer sea-ice variability on the Antarctic margin during the last glacial period reconstructed from snow petrel (Pagodroma nivea) stomach-oil deposits. Climate of the Past, 18(2), 381-403. https://doi.org/10.5194/cp-18-381-2022

Antarctic sea ice is a critical component of the climate system affecting a range of physical and biogeochemical feedbacks and supporting unique ecosystems. During the last glacial stage, Antarctic sea ice was more extensive than today, but uncertain... Read More about Summer sea-ice variability on the Antarctic margin during the last glacial period reconstructed from snow petrel (Pagodroma nivea) stomach-oil deposits.

Archaeological cereals as an isotope record of long-term soil health and anthropogenic amendment in southern Scandinavia (2021)
Journal Article
Gron, K., Larsson, M., Gröcke, D., Andersen, N., Andreasen, M., Bech, J.-H., Henriksen, P., Hilton, R., Jessen, M., Møller, N., Nielsen, F., Nielsen, P., Pihl, A., Sørensen, L., Westphal, J., Rowley-Conwy, P., & Church, M. (2021). Archaeological cereals as an isotope record of long-term soil health and anthropogenic amendment in southern Scandinavia. Quaternary Science Reviews, 253, Article 106762. https://doi.org/10.1016/j.quascirev.2020.106762

Maintaining soil health is integral to agricultural production, and the archaeological record contains multiple lines of palaeoclimatic and palaeoenvironmental proxy evidence that can contribute to the understanding and analysis of long-term trajecto... Read More about Archaeological cereals as an isotope record of long-term soil health and anthropogenic amendment in southern Scandinavia.

Long-term patterns of hillslope erosion by earthquake-induced landslides shape mountain landscapes (2020)
Journal Article
Wang, J., Howarth, J. D., McClymont, E. L., Densmore, A. L., Fitzsimons, S. J., Croissant, T., Grocke, D. R., West, M. D., Harvey, E. L., Frith, N. V., Garnett, M. H., & Hilton, R. G. (2020). Long-term patterns of hillslope erosion by earthquake-induced landslides shape mountain landscapes. Science Advances, 6(23), Article eaaz6446. https://doi.org/10.1126/sciadv.aaz6446

Widespread triggering of landslides by large storms or earthquakes is a dominant mechanism of erosion in mountain landscapes. If landslides occur repeatedly in particular locations within a mountain range, then they will dominate the landscape evolut... Read More about Long-term patterns of hillslope erosion by earthquake-induced landslides shape mountain landscapes.

Efficient preservation of young terrestrial organic carbon in sandy turbidity current deposits (2020)
Journal Article
Hage, S., Galy, V., Cartigny, M., Acikalin, S., Clare, M., Gröcke, D., Hilton, R., Hunt, J., Lintern, D., McGhee, C., Parsons, D., Stacey, C., Sumner, E., & Talling, P. (2020). Efficient preservation of young terrestrial organic carbon in sandy turbidity current deposits. Geology, 48(9), 882-887. https://doi.org/10.1130/g47320.1

Burial of terrestrial biospheric particulate organic carbon in marine sediments removes CO2 from the atmosphere, regulating climate over geologic time scales. Rivers deliver terrestrial organic carbon to the sea, while turbidity currents transport ri... Read More about Efficient preservation of young terrestrial organic carbon in sandy turbidity current deposits.

The isotopic composition and fluxes of particulate organic carbon exported from the eastern margin of the Tibetan Plateau (2019)
Journal Article
Wang, J., Hilton, R. G., Jin, Z., Zhang, F., Densmore, A. L., Gröcke, D. R., Xu, X., Li, G., & Joshua West, A. (2019). The isotopic composition and fluxes of particulate organic carbon exported from the eastern margin of the Tibetan Plateau. Geochimica et Cosmochimica Acta, 252, 1-15. https://doi.org/10.1016/j.gca.2019.02.031

Erosion of organic carbon from the terrestrial biosphere and sedimentary rocks plays an important role in the global carbon cycle across a range of timescales. Over geological timescales (>104 years), erosion and burial of particulate organic carbon... Read More about The isotopic composition and fluxes of particulate organic carbon exported from the eastern margin of the Tibetan Plateau.

Mountain glaciation drives rapid oxidation of rock-bound organic carbon (2017)
Journal Article
Horan, K., Hilton, R., Selby, D., Ottley, C., Gröcke, D., Hicks, M., & Burton, K. (2017). Mountain glaciation drives rapid oxidation of rock-bound organic carbon. Science Advances, 3(10), Article e1701107. https://doi.org/10.1126/sciadv.1701107

Over millions of years, the oxidation of organic carbon contained within sedimentary rocks is one of the main sources of carbon dioxide to the atmosphere, yet the controls on this emission remain poorly constrained. We use rhenium to track the oxidat... Read More about Mountain glaciation drives rapid oxidation of rock-bound organic carbon.

Erosion of organic carbon from the Andes and its affects on ecosystem carbon dioxide balance (2017)
Journal Article
Clark, K., Hilton, R., West, A., Robles Caceres, A., Grocke, D., Marthews, T., …Malhi, Y. (2017). Erosion of organic carbon from the Andes and its affects on ecosystem carbon dioxide balance. Journal of Geophysical Research: Biogeosciences, 122(3), 449-469. https://doi.org/10.1002/2016jg003615

Productive forests of the Andes are subject to high erosion rates that supply to the Amazon River sediment and carbon from both recently photosynthesized biomass and geological sources. Despite this recognition, the source and discharge of particulat... Read More about Erosion of organic carbon from the Andes and its affects on ecosystem carbon dioxide balance.

Variation in the diet of killer whales Orcinus orca at Marion Island, Southern Ocean (2016)
Journal Article
Reisinger, R., Gröcke, D., Lübcker, E., McClymont, E., Hoelzel, A., & Nico de Bruyn, P. (2016). Variation in the diet of killer whales Orcinus orca at Marion Island, Southern Ocean. Marine Ecology Progress Series, 549, 263-274. https://doi.org/10.3354/meps11676

Diet seems to be a key factor driving diversity and isolation among killer whale populations. Killer whales at Marion Island, Southern Ocean, have been observed preying on seals and penguins but are also know to depredate Patagonian toothfish from lo... Read More about Variation in the diet of killer whales Orcinus orca at Marion Island, Southern Ocean.

Earthquake-triggered increase in biospheric carbon export from a mountain belt (2016)
Journal Article
Wang, J., Jin, Z., Hilton, R., Zhang, F., Li, G., Densmore, A., …West, A. (2016). Earthquake-triggered increase in biospheric carbon export from a mountain belt. Geology, 44(6), 471-474. https://doi.org/10.1130/g37533.1

On geological time scales, the erosion of carbon from the terrestrial biosphere and its burial in sediments can counter CO2 emissions from the solid Earth. Earthquakes may increase the erosion of this biospheric carbon and supply it to mountain river... Read More about Earthquake-triggered increase in biospheric carbon export from a mountain belt.

Erosion of organic carbon in the Arctic as a geological carbon dioxide sink (2015)
Journal Article
Hilton, R., Galy, V., Gaillardet, J., Dellinger, M., Bryant, C., O’Regan, M., …Calmels, D. (2015). Erosion of organic carbon in the Arctic as a geological carbon dioxide sink. Nature, 524(7563), 84-87. https://doi.org/10.1038/nature14653

Soils of the northern high latitudes store carbon over millennial timescales (thousands of years) and contain approximately double the carbon stock of the atmosphere1, 2, 3. Warming and associated permafrost thaw can expose soil organic carbon and re... Read More about Erosion of organic carbon in the Arctic as a geological carbon dioxide sink.

New views on old carbon in the Amazon river: Insight from the source of organic carbon eroded from the Peruvian Andes (2013)
Journal Article
Clark, K., Hilton, R., West, A., Malhi, Y., Gröcke, D., Bryant, C., …New, M. (2013). New views on old carbon in the Amazon river: Insight from the source of organic carbon eroded from the Peruvian Andes. Geochemistry, Geophysics, Geosystems, 14(5), 1644-1659. https://doi.org/10.1002/ggge.20122

[1] Mountain rivers play a key role in the delivery of particulate organic carbon (POC) to large river systems and the ocean. Due to the extent of its drainage area and runoff, the Amazon River is one of Earth's most important biogeochemical systems.... Read More about New views on old carbon in the Amazon river: Insight from the source of organic carbon eroded from the Peruvian Andes.