Matthias Zabel

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The Sahara Desert is the largest source of mineral dust in the world. Emissions of African dust increased sharply in the early 1970s (ref. 2), a change that has been attributed mainly to drought in the Sahara/Sahel region caused by changes in the global distribution of sea surface temperature. The human contribution to land degradation and dust mobilization(More)
[1] The influence of the large-scale ocean circulation on Sahel rainfall is elusive because of the shortness of the observational record. We reconstructed the history of eolian and fluvial sedimentation on the continental slope off Senegal during the past 57,000 years. Our data show that abrupt onsets of arid conditions in the West African Sahel were linked(More)
The German language and in particular biomedical terms exhibit a rich and productive morphology. Beyond inflection and comparison forms frequently spelling variants, German - Greek/Latin synonyms and nominal compounds exist. For the English language, the SPECIALIST LEXICON, part of the UMLS project, covers a broad range of biomedical terms. In this paper we(More)
Sulfate reduction is a globally important redox process in marine sediments, yet global rates are poorly quantified. We developed an artificial neural network trained with 199 sulfate profiles, constrained with geomorphological and geochemical maps to estimate global sulfate-reduction rate distributions. Globally, 11.3 teramoles of sulfate are reduced(More)
The distribution of rainfall in tropical Africa is controlled by the African rainbelt, which oscillates on a seasonal basis. The rainbelt has varied on centennial to millennial timescales along with changes in Northern Hemisphere high-latitude climate, the Atlantic meridional overturning circulation and low-latitude insolation over the past(More)
Abundant hydroclimatic evidence from western Amazonia and the adjacent Andes documents wet conditions during Heinrich Stadial 1 (HS1, 18-15 ka), a cold period in the high latitudes of the North Atlantic. This precipitation anomaly was attributed to a strengthening of the South American summer monsoon due to a change in the Atlantic interhemispheric sea(More)
Citation: Bertassoli DJ Jr., Sawakuchi AO, Sawakuchi HO, Pupim FN, Hartmann GA, McGlue MM, Chiessi CM, Zabel M, Schefuß E, Pereira TS, Santos RA, Faustino SB and Oliveira PE and Bicudo DC (2017) The Fate of Carbon in Sediments of the Xingu and Tapajós Clearwater Rivers, Eastern Amazon. Front. Mar. Sci. 4:44. doi: 10.3389/fmars.2017.00044 The Fate of Carbon(More)
Ocean margin sediments have been considered as important sources of dissolved organic carbon (DOC) to the deep ocean, yet the contribution from advective settings has just started to be acknowledged. Here we present evidence showing that near-surface heating of sediment in the Guaymas Basin, a young extensional depression, causes mass production and(More)
Benthic phosphorus and iron budgets for NW-African slope sediments; biogeochemical processes and the importance of bioturbation K. Küster-Heins, G. J. de Lange, and M. Zabel Department of Geosciences, Univ. of Bremen, Klagenfurter Str., 28359 Bremen, Germany Department of Earth Sciences – Geochemistry, Faculty of Geosciences, Utrecht Univ., 3508 TA Utrecht,(More)
Marine microorganisms adapt to their habitat by structural modification of their membrane lipids. This concept is the basis of numerous molecular proxies used for paleoenvironmental reconstruction. Archaeal tetraether lipids from ubiquitous marine planktonic archaea are particularly abundant, well preserved in the sedimentary record and used in several(More)
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