Flüsse; Wassereinzugsgebiet; terrestrische Biosphäre; Radiokarbondatierung; biologische Marker; Klimawandel; Landumlegung; Böden; Anthropozän; Kohlenstoffkreislauf
Bao Rui, Zhao Meixun, McNichol Ann, Galy Valier, McIntyre Cameron, Haghipour Negar, Eglinton Timothy I. (2019), Temporal constraints on lateral organic matter transport along a coastal mud belt, in Organic Geochemistry
, 128, 86-93.
Bao Rui, Blattmann Thomas M., McIntyre Cameron, Zhao Meixun, Eglinton Timothy I. (2019), Relationships between grain size and organic carbon 14C heterogeneity in continental margin sediments, in Earth and Planetary Science Letters
, 505, 76-85.
Vonk Jorien E., Drenzek Nicholas J., Hughen Konrad A., Stanley Rachel H.R., McIntyre Cameron, Montluçon Daniel B., Giosan Liviu, Southon John R., Santos Guaciara M., Druffel Ellen R.M., Andersson August A., Sköld Martin, Eglinton Timothy I. (2019), Temporal deconvolution of vascular plant-derived fatty acids exported from terrestrial watersheds, in Geochimica et Cosmochimica Acta
, 244, 502-521.
French Katherine L., Hein Christopher J., Haghipour Negar, Wacker Lukas, Kudrass Hermann R., Eglinton Timothy I., Galy Valier (2018), Millennial soil retention of terrestrial organic matter deposited in the Bengal Fan, in Scientific Reports
, 8(1), 11997-11997.
Bao Rui, Strasser Michael, McNichol Ann P., Haghipour Negar, McIntyre Cameron, Wefer Gerold, Eglinton Timothy I. (2018), Tectonically-triggered sediment and carbon export to the Hadal zone, in Nature Communications
, 9(1), 121-121.
Yu Meng, Eglinton Timothy I., Haghipour Negar, Montluçon Daniel B., Wacker Lukas, Hou Pengfei, Zhang Hailong, Zhao Meixun (2018), Impacts of Natural and Human-Induced Hydrological Variability on Particulate Organic Carbon Dynamics in the Yellow River, in Environmental Science & Technology
, 53(3), 1119-1129.
Bao Rui, van der Voort Tessa S., Zhao Meixun, Guo Xinyu, Montluçon Daniel B., McIntyre Cameron, Eglinton Timothy I. (2018), Influence of Hydrodynamic Processes on the Fate of Sedimentary Organic Matter on Continental Margins, in Global Biogeochemical Cycles
, 32(9), 1420-1432.
Bao Rui, Uchida Masao, Zhao Meixun, Haghipour Negar, Montlucon Daniel, McNichol Ann, Wacker Lukas, Hayes John M., Eglinton Timothy I. (2018), Organic Carbon Aging During Across-Shelf Transport, in Geophysical Research Letters
Freymond Chantal V., Lupker Maarten, Peterse Francien, Haghipour Negar, Wacker Lukas, Filip Florin, Giosan Liviu, Eglinton Timothy I. (2018), Constraining Instantaneous Fluxes and Integrated Compositions of Fluvially Discharged Organic Matter, in Geochemistry, Geophysics, Geosystems
, 19(8), 2453-2462.
Coppola Alysha I., Wiedemeier Daniel B., Galy Valier, Haghipour Negar, Hanke Ulrich M., Nascimento Gabriela S., Usman Muhammed, Blattmann Thomas M., Reisser Moritz, Freymond Chantal V., Zhao Meixun, Voss Britta, Wacker Lukas, Schefuß Enno, Peucker-Ehrenbrink Bernhard, Abiven Samuel, Schmidt Michael W. I., Eglinton Timothy I. (2018), Global-scale evidence for the refractory nature of riverine black carbon, in Nature Geoscience
, 11(8), 584-588.
Usman Muhammed Ojoshogu, Kirkels Frédérique Marie Sophie Anne, Zwart Huub Michel, Basu Sayak, Ponton Camilo, Blattmann Thomas Michael, Ploetze Michael, Haghipour Negar, McIntyre Cameron, Peterse Francien, Lupker Maarten, Giosan Liviu, Eglinton Timothy Ian (2018), Reconciling drainage and receiving basin signatures of the Godavari River system, in Biogeosciences
, 15(11), 3357-3375.
Van der Voort Tessa S., Mannu Utsav, Blattmann Thomas M., Bao Rui, Zhao Meixun, Eglinton Timothy I. (2018), Deconvolving the Fate of Carbon in Coastal Sediments, in Geophysical Research Letters
, 45(9), 4134-4142.
Tao Shuqin, Eglinton Timothy I., Zhang Liang, Yi Zhiwei, Montluçon Daniel B., McIntyre Cameron, Yu Meng, Zhao Meixun (2018), Temporal variability in composition and fluxes of Yellow River particulate organic matterCompostion and fluxes of Yellow River POC, in Limnology and Oceanography
, 63(S1), S119-S141.
Freymond Chantal V., Kündig Nicole, Stark Courcelle, Peterse Francien, Buggle Björn, Lupker Maarten, Plötze Michael, Blattmann Thomas M., Filip Florin, Giosan Liviu, Eglinton Timothy I. (2018), Evolution of biomolecular loadings along a major river system, in Geochimica et Cosmochimica Acta
, 223, 389-404.
Avelar Silvania, van der Voort Tessa S., Eglinton Timothy I. (2017), Relevance of carbon stocks of marine sediments for national greenhouse gas inventories of maritime nations, in Carbon Balance and Management
, 12(1), 10-10.
Giosan Liviu, Ponton Camilo, Usman Muhammed, Blusztajn Jerzy, Fuller Dorian Q., Galy Valier, Haghipour Negar, Johnson Joel E., McIntyre Cameron, Wacker Lukas, Eglinton Timothy I. (2017), Short communication: Massive erosion in monsoonal central India linked to late Holocene land cover degradation, in Earth Surface Dynamics
, 5(4), 781-789.
Freymond Chantal V., Peterse Francien, Fischer Lorena V., Filip Florin, Giosan Liviu, Eglinton Timothy I. (2017), Branched GDGT signals in fluvial sediments of the Danube River basin: Method comparison and longitudinal evolution, in Organic Geochemistry
, 103, 88-96.
The export of carbon from the terrestrial biosphere via rivers to the oceans comprises an important component of the global carbon cycle, with burial of this carbon representing a long-term sink for atmospheric CO2. Production, fluvial export and sequestration of terrestrial organic carbon (OC) in marine sediments also provides rich archives of past biospheres, continental environments and climates. Despite the importance of river basins for our understanding of present and past carbon cycle processes, there remain fundamental gaps in our understanding of carbon transfer from biological source to sedimentary sink. For example, the extent to which biospheric organic carbon discharged from rivers reflect ecosystem- or drainage basin-wide processes remains unclear. Moreover, the storage and transmission times of biospheric carbon within river basins are poorly constrained, and the factors that control the residence time of terrestrial biospheric carbon are even less well known. Rivers and human civilizations have been closely intertwined in recent millennia, rendering it challenging to disentangle natural from anthropogenic influences on processes, yet this is a vital task in order understand past and future changes in river systems. As part of the initial CAPS-LOCK project, we hypothesized that timescales of biospheric carbon storage in terrestrial drainage basins vary as a function of climate and anthropogenic activity. We set out to further investigate these processes through investigation of modern river systems and via reconstruction of past dynamics of fluvial OC export from river-proximal sediment records. These investigations have shed important new light on underlying processes, lending support for our hypothesis, while also raising intriguing new questions. Specifically, temperature and hydrology are emerging as primary controls on biospheric C storage times, with different types of biospheric carbon appearing more sensitive to one control or the other. These findings have important implications for our understanding of carbon cycle processes, as well as for paleoclimate, and paleoenvironmental reconstruction based on signals emanating from river basins that are preserved in aquatic sediments. In this next phase of the CAPS-LOCK project, we seek to answers the following questions: (1) To what extent does temperature versus run-off (hydrology) [and versus other factors] exert the dominant control on biospheric C export from river basins? (2) What is the importance of different OM transport pathways through river basins and how do they vary with drainage basin properties? (3) What are the consequences of climate and anthropogenic forcing on fluxes, composition and fate of terrestrial OC delivered by rivers to adjacent continental margins? We plan to address these questions through execution of 3 work packages that will explore (A) controls on biospheric C residence times in a broader range of river basins (B) assessment of transport pathways and dynamics for specific biospheric carbon components, and (C) global perspectives on terrestrial OC discharge from river systems. These activities will include detailed molecular isotopic investigations of biospheric OC associated with different particle phases, and utilization of a nascent comprehensive database on geochemical and sedimentological characteristics of river-proximal continental margin surface sediments. Collectively, we aim to develop predictive capabilities for assessing the characteristics and age of organic carbon that is exported from the terrestrial biosphere as a function of river drainage basin properties.