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  • 1
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    Unknown
    PANGAEA
    In:  Supplement to: Prahl, Frederick G; Cowie, Greg I; de Lange, Gert J; Sparrow, Margaret A (2003): Selective organic matter preservation in “burn-down” turbidites on the Madeira Abyssal Plain. Paleoceanography, 18(2), 1052, https://doi.org/10.1029/2002PA000853
    Publication Date: 2023-05-12
    Description: Oxidized intervals of five organic-rich Madeira Abyssal Plain (MAP) turbidites deposited during the Miocene, Pliocene, and Pleistocene all displayed comparable major loss of total organic carbon (TOC) (84 ± 3.1%) accompanied by a negative isotopic (d13C) shift ranging from -0.3 to -2.9 per mil. Major but significantly lower loss of total nitrogen (Ntot, 61 ± 7.1%) also occurred, leading to a decrease in TOC relative to Ntot (C/Ntot) and a +1.3 to 2.7 per mil Ntot isotopic (d15N) shift. Compound specific isotopic measurements on plant wax n-alkanes indicate the terrestrial organic component in the unoxidized deposits is 13C-enriched owing to significant C4 contribution. Selective preservation of terrestrial relative to marine organic carbon could account for the d13C behavior of TOC upon oxidation but only if a 13C-depleted component of the bulk terrestrial signal is selectively preserved in the process. Although the C/Ntot decrease and positive d15N shift seems inconsistent with selective terrestrial organic preservation, results from analysis of a Modern eolian dust sample collected in the vicinity indicate these observations are compatible. Regardless of the specific explanation for these isotopic observations, however, our findings provide evidence that paleoreconstruction of properties such as pCO2 using the d13C of TOC is a goal fraught with uncertainty whether or not the marine sedimentary record considered is 'contaminated' with significant terrestrial input. Nonetheless, despite major and selective loss of both marine and terrestrial components as a consequence of postdepositional oxidation, intensive organic geochemical proxies such as the alkenone unsaturation index, UK'37, appear resistant to change and thereby retain their paleoceanographic promise.
    Type: Dataset
    Format: application/zip, 4 datasets
    Location Call Number Limitation Availability
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  • 2
    Publication Date: 2023-05-12
    Keywords: Alkenone, unsaturation index UK'37; Atlantic; Carbon, organic, total; DEPTH, sediment/rock; Even long chain n-alcohols (SumC20-32), per unit mass total organic carbon; Fatty acids; n-Alkane, per unit mass total organic carbon; PC; Piston corer; Sample code/label; Sum n-alkanes C25-C31, per unit mass total organic carbon; Sum n-alkanes C37-C39, per unit mass total organic carbon; Tyro_90P22; δ13C, organic carbon
    Type: Dataset
    Format: text/tab-separated-values, 45 data points
    Location Call Number Limitation Availability
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  • 3
    Publication Date: 2023-06-27
    Keywords: 157-951A; 157-952A; Age, comment; Alkenone C37:2, δ13C; Atlantic; Canarias Sea; Canary_Islands; Canary Islands; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DRILL; Drilling/drill rig; Event label; Joides Resolution; Latitude of event; Leg157; Longitude of event; MAP_86P25; n-Alkane C25, δ13C; n-Alkane C27, δ13C; n-Alkane C29, δ13C; n-Alkane C31, δ13C; PC; Piston corer; Sample code/label; South Atlantic Ocean; Status; Tyro_90P22; δ13C, organic carbon
    Type: Dataset
    Format: text/tab-separated-values, 52 data points
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  • 4
    Publication Date: 2023-06-27
    Keywords: 157-951A; 157-952A; Age, comment; Alkenone, unsaturation index UK'37; Calcium carbonate; Canarias Sea; Canary_Islands; Canary Islands; Carbon, organic, total; Carbon/Nitrogen ratio; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DRILL; Drilling/drill rig; Event label; Joides Resolution; Latitude of event; Leg157; Longitude of event; Loss; MAP_86P25; MAP_86P5; Nitrogen, total; PC; Piston corer; Sample code/label; South Atlantic Ocean; Status; Sum n-alkanes C25-C31, per unit mass total organic carbon; Sum n-alkanes C37-C39, per unit mass total organic carbon; δ13C, organic carbon; δ15N
    Type: Dataset
    Format: text/tab-separated-values, 250 data points
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  • 5
    Publication Date: 2023-05-12
    Keywords: Age, 14C milieu/reservoir corrected (-400 yr); Age, dated; Age, dated standard deviation; DEPTH, sediment/rock; Event label; GH93-KI-5; Japan Sea; KT94-15_PC-9; Laboratory code/label; PC; PC-9; Piston corer
    Type: Dataset
    Format: text/tab-separated-values, 18 data points
    Location Call Number Limitation Availability
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  • 6
    Publication Date: 2023-05-12
    Keywords: AGE; Age, dated; Age, dated standard deviation; Calcium carbonate; Carbon, organic, total; DEPTH, sediment/rock; GH93-KI-5; Globigerina umbilicata, δ18O; Globoquadrina dutertrei, δ13C; Japan Sea; Lignin, per unit mass total organic carbon; Mass spectrometer Finnigan MAT 252; Molybdenum; Neogloboquadrina pachyderma dextral, δ18O; Neogloboquadrina pachyderma sinistral, δ18O; PC; Piston corer; Rhenium
    Type: Dataset
    Format: text/tab-separated-values, 345 data points
    Location Call Number Limitation Availability
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  • 7
    Publication Date: 2023-05-12
    Keywords: Atlantic; DEPTH, sediment/rock; Difference; Loss; PC; Piston corer; Sample code/label; Tyro_90P22; Δδ13C
    Type: Dataset
    Format: text/tab-separated-values, 100 data points
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  • 8
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    Unknown
    PANGAEA
    In:  Supplement to: Crusius, John; Pedersen, Thomas F; Calvert, Stephen E; Cowie, Greg I; Oba, Tadamichi (1999): A 36 kyr geochemical record from the Sea of Japan of organic matter flux variations and changes in intermediate water oxygen concentrations. Paleoceanography, 14(2), 248-259, https://doi.org/10.1029/1998PA900023
    Publication Date: 2023-05-12
    Description: Intervals of organic C- and carbonate-rich laminated sediments occur in the Sea of Japan with roughly the same frequency as temperature changes observed in Greenland ice cores, providing clear evidence of rapid oceanographic change during the past 36 kyr. Planktonic foraminiferal d18O data suggest that only the laminated sediments deposited during the Last Glacial Maximum (LGM), and perhaps one other interval formed during a period of increased water column stratification. Sedimentary Re and Mo data are consistent with bottom waters that were sulfidic during the LGM and suboxic during other laminated intervals. Results of a numerical model of Corg and Re burial are consistent with a mechanism whereby an increased Corg flux to the seafloor drove oxygen concentrations toward depletion during times of deposition of the suboxic laminated intervals. Such a process could have resulted from increased upwelling driven either by increased deep water formation due to colder and/or more saline surface waters or by stronger northeasterly monsoonal winds.
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 9
    Publication Date: 2023-07-07
    Keywords: AGE; Age, comment; Age, dated; Age, dated standard deviation; Calcium carbonate; Carbon, organic, total; DEPTH, sediment/rock; Globigerina umbilicata, δ18O; Japan Sea; KT94-15_PC-9; Lignin, per unit mass total organic carbon; Mass spectrometer Finnigan MAT 252; Molybdenum; PC; PC-9; Piston corer; Rhenium
    Type: Dataset
    Format: text/tab-separated-values, 436 data points
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  • 10
    Publication Date: 2022-05-27
    Description: © The Author(s), 2021. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in van Putten, I., Kelly, R., Cavanagh, R. D., Murphy, E. J., Breckwoldt, A., Brodie, S., Cvitanovic, C., Dickey-Collas, M., Maddison, L., Melbourne-Thomas, J., Arrizabalaga, H., Azetsu-Scott, K., Beckley, L. E., Bellerby, R., Constable, A. J., Cowie, G., Evans, K., Glaser, M., Hall, J., Hobday, A. J., Johnston, N. M., Llopiz, J. K., Mueter, F., Muller-Karger, F. E., Weng, K. C., Wolf-Gladrow, D., Xavier, J. C. A decade of incorporating social sciences in the Integrated Marine Biosphere Research Project (IMBeR): much done, much to do? Frontiers in Marine Science, 8, (2021): 662350, https://doi.org/10.3389/fmars.2021.662350.
    Description: Successful management and mitigation of marine challenges depends on cooperation and knowledge sharing which often occurs across culturally diverse geographic regions. Global ocean science collaboration is therefore essential for developing global solutions. Building effective global research networks that can enable collaboration also need to ensure inter- and transdisciplinary research approaches to tackle complex marine socio-ecological challenges. To understand the contribution of interdisciplinary global research networks to solving these complex challenges, we use the Integrated Marine Biosphere Research (IMBeR) project as a case study. We investigated the diversity and characteristics of 1,827 scientists from 11 global regions who were attendees at different IMBeR global science engagement opportunities since 2009. We also determined the role of social science engagement in natural science based regional programmes (using key informants) and identified the potential for enhanced collaboration in the future. Event attendees were predominantly from western Europe, North America, and East Asia. But overall, in the global network, there was growing participation by females, students and early career researchers, and social scientists, thus assisting in moving toward interdisciplinarity in IMBeR research. The mainly natural science oriented regional programmes showed mixed success in engaging and collaborating with social scientists. This was mostly attributed to the largely natural science (i.e., biological, physical) goals and agendas of the programmes, and the lack of institutional support and push to initiate connections with social science. Recognising that social science research may not be relevant to all the aims and activities of all regional programmes, all researchers however, recognised the (potential) benefits of interdisciplinarity, which included broadening scientists’ understanding and perspectives, developing connections and interlinkages, and making science more useful. Pathways to achieve progress in regional programmes fell into four groups: specific funding, events to come together, within-programme-reflections, and social science champions. Future research programmes should have a strategic plan to be truly interdisciplinary, engaging natural and social sciences, as well as aiding early career professionals to actively engage in such programmes.
    Description: This publication resulted in part from support from the U.S. National Science Foundation (Grant OCE-1840868) to the Scientific Committee on Oceanic Research (SCOR).
    Keywords: marine science ; research networks ; disciplines ; global ; regional programmes
    Repository Name: Woods Hole Open Access Server
    Type: Article
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