510 Works

Single non-normalized data of electron probe analyses of all glass shard samples from the Seward Peninsula and the Lipari obsidian reference standard, supplement to: Lenz, Josefine; Wetterich, Sebastian; Jones, Benjamin M; Meyer, Hanno; Bobrov, Anatoly A; Grosse, Guido (2016): Evidence of multiple thermokarst lake generations from an 11 800-year-old permafrost core on the northern Seward Peninsula, Alaska. Boreas, 20 pp

Josefine Lenz, Sebastian Wetterich, Benjamin M Jones, Hanno Meyer, Anatoly A Bobrov & Guido Grosse
Permafrost degradation influences the morphology, biogeochemical cycling and hydrology of Arctic landscapes over a range of time scales. To reconstruct temporal patterns of early to late Holocene permafrost and thermokarst dynamics, site-specific palaeo-records are needed. Here we present a multi-proxy study of a 350-cm-long permafrost core from a drained lake basin on the northern Seward Peninsula, Alaska, revealing Lateglacial to Holocene thermokarst lake dynamics in a central location of Beringia. Use of radiocarbon dating, micropalaeontology...

Composition of Pacific sea-floor manganese nodules

H William Menard, Edward D Goldberg & H E Hawkes
This collection of data on manganese nodules on the floor of the Pacific Ocean represents all the information that was available to the authors in May, 1964. It is compiled from both published references and original data. No attempt is made here to generalize or to speculate on the origin of the manganese or associated elements further discussion of these aspects of the subject may be had by reference to the literature.

Hydrogen isotope compositions of terrestrial plant-wax n-alkanes analysed on a transect of marine surface sediment samples from 1°N to 28°S off southwest Africa, supplement to: Vogts, Angela; Badewien, Tanja; Rullkötter, Jürgen; Schefuß, Enno (2016): Near-constant apparent hydrogen isotope fractionation between leaf wax n-alkanes and precipitation in tropical regions: Evidence from a marine sediment transect off SW Africa. Organic Geochemistry, 96, 18-27

Angela Vogts, Tanja Badewien, Jürgen Rullkötter & Enno Schefuß
A transect of marine surface sediment samples from 1° N to 28° S off southwest Africa was analysed to verify the application of hydrogen isotope compositions of terrestrial plant-wax n-alkanes preserved in ocean sediments as a proxy for continental hydrological conditions. Conditions on the adjacent continent range from humid evergreen forests to deciduous forests, wood- and shrub land and further to arid grasslands and deserts. The hydrogen isotope values for the dominant n-alkane homologues (C29,...

Growth, survival, gene expression, microbiota and tryptic activity during feeding of Scophthalmus maximus first feeding larvae with beta-glucan (MacroGard), supplement to: Miest, Joanna; Arndt, Carmen; Adamek, Mikolaj; Steinhagen, Dieter; Reusch, Thorsten B H (2016): Dietary beta-glucan (MacroGard®) enhances survival of first feeding turbot (Scophthalmus maximus) larvae by altering immunity, metabolism and microbiota. Fish & Shellfish Immunology, 48, 94-104

Joanna Miest, Carmen Arndt, Mikolaj Adamek, Dieter Steinhagen & Thorsten B H Reusch
Reflecting the natural biology of mass spawning fish aquaculture production of fish larvae is often hampered by high and unpredictable mortality rates. The present study aimed to enhance larval performance and immunity via the oral administration of an immunomodulator, beta-glucan (MacroGard®) in turbot (Scophthalmus maximus). Rotifers (Brachionus plicatilis) were incubated with or without yeast beta-1,3/1,6-glucan in form of MacroGard® at a concentration of 0.5 g/L. Rotifers were fed to first feeding turbot larvae once a...

XRF scanning, revisited composite depth and age model of ODP Site 159-959 (1.8-6.2 Ma), supplement to: Vallé, Francesca; Westerhold, Thomas; Dupont, Lydie M (2016): Orbital-driven environmental changes recorded at ODP Site 959 (eastern equatorial Atlantic) from the Late Miocene to the Early Pleistocene. International Journal of Earth Sciences

Francesca Vallé, Lydie M Dupont & Thomas Westerhold
In this study, new high-resolution XRF data from ODP Site 959 (3°37'N, 2°44'W) have been used to investigate the relationship between paleoenvironmental changes in West Africa and sedimentation in the tropical east Atlantic Ocean. Fe intensity data have been used to build a 91 meter composite depth record that has been astronomically tuned allowing the development of a detailed age model from 6.2 to 1.8 Ma. Based on this new stratigraphy we studied the variations...

Hourly values of X, Y and Z geomagnetic components recorded at Coimbra Station (IAGA code: COI) and local geomagnetic K indices for 2007 to 2014, supplement to: Castillo, Yvelice Soraya; Pais, Maria Alexandra; Fernandes, João; Ribeiro, Paulo; Morozova, Anna L; Pinheiro, Fernando J G (2017): Geomagnetic activity at Northern Hemisphere's mid-latitude ground stations: How much can be explained using TS05 model. Journal of Atmospheric and Solar-Terrestrial Physics, 165-166, 38-53

Yvelice Soraya Castillo, Maria Alexandra Pais, Paulo Ribeiro, João Fernandes, Anna L Morozova & Fernando J G Pinheiro
For the 2007 to 2014 period, we use a statistical approach to evaluate the performance of Tsyganenko and Sitnov [2005, doi:10.1029/2004JA010798] semi-empirical model (TS05) in estimating the magnetospheric transient signal observed at four Northern Hemisphere mid-latitude ground stations: Coimbra, Portugal; Panagyurishte, Bulgary; Novosibirsk, Russia and Boulder, USA. We find that the TS05 performance is clearly better for the X (North-South) than for the Y (East-West) field components and for more geomagnetically active days as determined...

14C concentrations of algal and archaeal lipids and their associated sea surface temperature proxies in the Black Sea, supplement to: Kusch, Stephanie; Rethemeyer, Janet; Hopmans, Ellen C; Wacker, Lukas; Mollenhauer, Gesine (2016): Factors influencing 14C concentrations of algal and archaeal lipids and their associated sea surface temperature proxies in the Black Sea. Geochimica et Cosmochimica Acta, 188, 35-57

Stephanie Kusch, Janet Rethemeyer, Ellen C Hopmans, Lukas Wacker & Gesine Mollenhauer
Understanding the preservation and deposition history of organic molecules is crucial for the understanding of paleoenvironmental information contained in their abundance ratios such as Uk'37 and TEX86 used as proxies for sea surface temperature (SST). Based on their relatively high refractivity, alkenones and glycerol dialkyl glycerol tetraethers (GDGTs) can survive postdepositional processes like lateral transport, potentially causing inferred SSTs to be misleading. Likewise, selective preservation of alkenones and GDGTs may cause biases of the SST...

Zooplankton distribution and migration in low-oxygen modewater eddies, supplement to: Hauss, Helena; Christiansen, Svenja; Schütte, Florian; Kiko, Rainer; Edvam Lima, M; Rodrigues, Elizandro; Karstensen, Johannes; Löscher, Carolin R; Körtzinger, Arne; Fiedler, Björn (2016): Dead zone or oasis in the open ocean? Zooplankton distribution and migration in low-oxygen modewater eddies. Biogeosciences, 13(6), 1977-1989

Helena Hauss, Sarah Christiansen, Florian Schütte, Rainer Kiko, M Edvam Lima, Elizandro Rodrigues, Johannes Karstensen, Carolin R Löscher, Arne Körtzinger & Björn Fiedler
The eastern tropical North Atlantic (ETNA) features a mesopelagic oxygen minimum zone (OMZ) at approximately 300-600 m depth. Here, oxygen concentrations rarely fall below 40 µmol O2 kg-1, but are expected to decline under future projections of global warming. The recent discovery of mesoscale eddies that harbour a shallow suboxic (<5 µmol O2 kg-1) OMZ just below the mixed layer could serve to identify zooplankton groups that may be negatively or positively affected by on-going...

Distribution, density and abundance of Antarctic ice seals off Queen Maud Land and the eastern Weddell Sea, supplement to: Gurarie, Eliezer; Bengtson, John L; Bester, Marthán Nieuwoudt; Blix, Arnoldus Schytte; Cameron, Michael; Bornemann, Horst; Nordøy, Erling Sverre; Plötz, Joachim; Steinhage, Daniel; Boveng, Peter (2016): Distribution, density and abundance of Antarctic ice seals off Queen Maud Land and the eastern Weddell Sea. Polar Biology, 40(5), 1149-1165

Eliezer Gurarie, John L Bengtson, Marthán Nieuwoudt Bester, Arnoldus Schytte Blix, Michael Cameron, Horst Bornemann, Erling Sverre Nordøy, Joachim Plötz, Daniel Steinhage & Peter Boveng
The Antarctic Pack Ice Seal (APIS) Program was initiated in 1994 to estimate the abundance of four species of Antarctic phocids: the crabeater seal Lobodon carcinophaga, Weddell seal Leptonychotes weddellii, Ross seal Ommatophoca rossii and leopard seal Hydrurga leptonyx and to identify ecological relationships and habitat use patterns. The Atlantic sector of the Southern Ocean (the eastern sector of the Weddell Sea) was surveyed by research teams from Germany, Norway and South Africa using a...

Physiological response measures (respiration, clearance, byssus production, survival) of Perna viridis during a 91 day exposure experiment to microplastics in Bogor, Indonesia, 2014, supplement to: Rist, Sinja Elena; Assidqi, Khoirunnisa; Zamani, Neviaty P; Appel, Daniel; Perschke, Myriam; Huhn, Mareike; Lenz, Mark (2016): Suspended micro-sized PVC particles impair the performance and decrease survival in the Asian green mussel Perna viridis. Marine Pollution Bulletin, 111(1-2), 213-220

Sinja Elena Rist, Khoirunnisa Assidqi, Neviaty P Zamani, Daniel Appel, Myriam Perschke, Mareike Huhn & Mark Lenz
Perna viridis from the Bay of Jakarta was exposed to different concentrations (0, 21.6, 216 and 2160 mg/l) of PVC microplastic particles for 91 days in a controlled laboratory experiment. Particles were negatively buoyant, but were regularly resuspended from the sediment, mimicking tidal events. The particles were contaminated with the organic pollutant fluoranthene, except for one control group, which was exposed to the highest plastic concentration (2160 mg/l) but with clean particles.Within the 91 days...

Late Glacial and Holocene data from sediment cores MD99-2236 and MD99-2256, supplement to: Jennings, Anne E; Andrews, John A; Pearce, Christof; Wilson, Lindsay; Olafsdottir, Sædis (2015): Detrital carbonate peaks on the Labrador shelf, a 13–7ka template for freshwater forcing from the Hudson Strait outlet of the Laurentide Ice Sheet into the subpolar gyre. Quaternary Science Reviews, 107, 62-80

Anne E Jennings, John A Andrews, Christof Pearce, Lindsay Wilson & Sædis Olafsdottir
The Laurentide Ice Sheet (LIS) was a large, dynamic ice sheet in the early Holocene. The glacial events through Hudson Strait leading to its eventual demise are recorded in the well-dated Labrador shelf core, MD99-2236 from the Cartwright Saddle. We develop a detailed history of the timing of ice-sheet discharge events from the Hudson Strait outlet of the LIS during the Holocene using high-resolution detrital carbonate, ice rafted detritus (IRD), d18O, and sediment color data....

Physical oceanography during three Maria S. Merian cruises (MSM21/2, MSM27, MSM28), supplement to: Schneider, Linn; Kieke, Dagmar; Jochumsen, Kerstin; Colbourne, Eugene; Yashayaev, Igor M; Steinfeldt, Reiner; Varotsou, Eirini; Serra, Nuno; Rhein, Monika (2015): Variability of Labrador Sea Water transported through Flemish Pass during 1993-2013. Journal of Geophysical Research: Oceans, 120(8), 5514-5533

Linn Schneider, Dagmar Kieke, Kerstin Jochumsen, Eugene Colbourne, Igor M Yashayaev, Reiner Steinfeldt, Eirini Varotsou, Nuno Serra & Monika Rhein
Flemish Pass, located at the western subpolar margin, is a passage (sill depth 1200 m) that is constrained by the Grand Banks and the underwater plateau Flemish Cap. In addition to the Deep Western Boundary Current (DWBC) pathway offshore of Flemish Cap, Flemish Pass represents another southward transport pathway for two modes of Labrador Sea Water (LSW), the lightest component of North Atlantic Deep Water carried with the DWBC. This pathway avoids potential stirring regions...

Annotated record and spectrochemical analyses of Mn nodules from Georgia Strait, British Columbia obtained during CNAV Laymore in 1970, supplement to: Pharo, Christopher Howard (1972): Sediments of the Central and Southern Strait of Georgia, British Columbia (Ph. D. Dissertation). University of British Columbia, Vancouver, Canada, 290 pp

Christopher Howard Pharo
A study of the distribution, dispersal and composition of surficial sediments in the Strait of Georgia, B.C., has resulted in the understanding of basic sedimentologic conditions within this area. The Strait of Georgia is: a long, narrow, semi-enclosed basin with a restricted circulation and a single, main, sediment source. The Fraser. River supplies practically all the sediment now being deposited in the Strait of Georgia, the bulk of it during the spring and summer freshet....

Description and 238U, 234U, 232Th and 230Th measurements of the manganese nodule analysed from station SO79_63KG, R/V SONNE, supplement to: Bollhöfer, A; Eisenhauer, Anton; Frank, Norbert; Pech, D; Mangini, Augusto (1996): Thorium and uranium isotopes in a manganese nodule from the Peru basin determined by alpha spectrometry and thermal ionization mass spectrometry (TIMS): Are manganese supply and growth related to climate? Geologische Rundschau, 85(3), 577-585

A Bollhöfer, Anton Eisenhauer, Norbert Frank, D Pech & Augusto Mangini
Thorium and uranium isotopes were measured in a diagenetic manganese nodule from the Peru basin applying alpha- and thermal ionization mass spectrometry (TIMS). Alpha-counting of 62 samples was carried out with a depth resolution of 0.4 mm to gain a high-resolution Th-230(excess) profile. In addition, 17 samples were measured with TIMS to obtain precise isotope concentrations and isotope ratios. We got values of 0.06-0.59 ppb (Th-230), 0.43-1.40 ppm (Th-232), 0.09-0.49 ppb (U-234) and 1.66-8.24 ppm...

Raw-data to morphometric investigations about the Neogene planktonic foraminifer Globorotalia menardii and related forms from ODP Hole 154-925B (Céara Rise, western tropical Atlantic), supplement to: Knappertsbusch, Michael W (2016): Evolutionary prospection in the Neogene planktic foraminifer Globorotalia menardii and related forms from ODP Hole 925B (Ceara Rise, western tropical Atlantic): evidence for gradual evolution superimposed by long distance dispersal? Swiss Journal of Palaeontology, 1-44

Michael W Knappertsbusch
Evolutionary prospection is the study of morphological evolution and speciation in calcareous plankton from selected time-slices and key sites in the world oceans. In this context, the Neogene menardiform globorotalids serve as study objects for morphological speciation in planktic foraminifera. A downcore investigation of test morphology of the lineage of G. menardii-limbata-multicamerata during the past 8 million years was carried out in the western tropical Atlantic ODP Hole 925B. A total of 4669 specimens were...

Geochemistry on manganese nodules from the central Pacific, supplement to: Marchig, Vesna; Gundlach, Heinrich (1976): Zur Geochemie von Manganknollen aus dem Zentralpazifik und ihrer Sedimentunterlage - 1. Manganknollen = On the geochemistry of manganese nodules from the central Pacific and their underlying sediments - 1. Manganese nodules. In: G. Ludwig; H. Müller; K. Vollbrecht (eds) Sediments on the Iceland Faeroe Ridge, 27 pp; ISBN 978-3-510-96176-4, Geologisches Jahrbuch Reihe D, D16, 59-77

Vesna Marchig & Heinrich Gundlach
During Cruise VA 04/2 of the R. V. Valdivia in 1972, numerous samples were collected of manganese nodules, sodiments, and the pore water of the Sediments in the area betwoen 6° N and 11° N and between 149° W and 154° W in the Central Pacific. This paper reports on the geochemical study of 70 manganese nodules from 12 stations (box-core and dredge samples). The nodules Irom a single Station vary considerably in diemical composition....

Phenotypical responses of Fucus vesiculosus germlings to warming, acidification, nutrient enrichment and local upwelling under natural fluctuations (July - September 2014), supplement to: Al-Janabi, Balsam; Kruse, Inken; Graiff, Angelika; Winde, Vera; Lenz, Mark; Wahl, Martin (2016): Buffering and Amplifying Interactions among OAW (Ocean Acidification & Warming) and Nutrient Enrichment on Early Life-Stage Fucus vesiculosus L. (Phaeophyceae) and Their Carry Over Effects to Hypoxia Impact. PLoS ONE, 11(4), e0152948

Balsam Al-Janabi, Inken Kruse, Angelika Graiff, Vera Winde, Mark Lenz & Martin Wahl
During summer 2014 (mid-July - mid-September 2014), early life-stage Fucus vesiculosus were exposed to combined ocean acidification and warming (OAW) in the presence and absence of enhanced nutrient levels (OAW x N experiment). Subsequently, F. vesiculosus germlings were exposed to a final upwelling disturbance during 3 days (mid-September 2014). Experiments were performed in the near-natural scenario "Kiel Outdoor Benthocosms" including natural fluctuations in the southwestern Baltic Sea, Kiel Fjord, Germany (54°27 'N, 10°11 'W). Genetically...

Alkenone production along the California Margin, supplement to: Herbert, Timothy D; Schuffert, Jeffrey D; Thomas, D; Lange, Carina Beatriz; Weinheimer, Amy L; Peleo-Alampay, Alyssa; Herguera, Juan-Carlos (1998): Depth and seasonality of alkenone production along the California Margin inferred from a core top transect. Paleoceanography, 13(3), 263-271

Timothy D Herbert, Jeffrey D Schuffert, D Thomas, Carina Beatriz Lange, Amy L Weinheimer, Alyssa Peleo-Alampay & Juan-Carlos Herguera
Alkenone unsaturation indices (Uk'37) of marine sediment could prove particularly useful on organic-rich continental margins where carbonate dissolution hampers the use of other paleoclimatic proxies [McCaffrey et al., 1990, doi:10.1016/0016-7037(90)90399-6; Kennedy and Brassell, 1992, doi:10.1016/0146-6380(92)90040-5]. Forty core top samples of Recent sediment from a latitudinal transect (23°-40°N) along the California margin yield Uk'37 values that correlate linearly with modern mean annual sea surface temperatures (SSTs) in the range of 12°-23°C. Reproducibility of the unsaturation value...

Lithostatigraphy of the CESAR cores, supplement to: Mudie, Peta J; Blasco, Steve M (1985): Lithostratigraphy of the CESAR cores. In: Jackson, H R; Mudie, P J & Blasco, S M, Initial geological report on CESAR - the Canadian Expedition to Study the Alpha Ridge, Arctic Ocean, Geological Survey of Canada, 84-22, 59-99

Peta J Mudie & Steve M Blasco
Sixteen piston cores and twelve gravity cores were successfully recovered from northern and southern crests of the eastern Alpha Ridge andfrom the Alpha Ridge graben. All but one core contain late Cenozoic muds with variable amounts of sand- to pebble-sized clastic material that probably reflects transport by ice during the past 4-5 Ma. Sixteen Cenozoic-Holocene lithostratigraphic units have been delimited on the basis of sediment texture, structure, colour, detrital carbonate and authigenicferromanganese content. The composition...

Stable isotopes and XRF data over the Paleocene-Eocene Thermal Maximum from IODP Sites U1403 and U1409, supplement to: Penman, Donald E; Kirtland Turner, Sandra; Sexton, Philip F; Norris, Richard D; Dickson, Alexander J; Boulila, Slah; Ridgwell, Andy; Zeebe, Richard E; Zachos, James C; Cameron, Adele; Westerhold, Thomas; Röhl, Ursula (2016): An abyssal carbonate compensation depth overshoot in the aftermath of the Paleocene-Eocene Thermal Maximum. Nature Geoscience, 9, 575-580

Donald E Penman, Sandra Kirtland Turner, Philip F Sexton, Richard D Norris, Alexander J Dickson, Slah Boulila, Andy Ridgwell, Richard E Zeebe, James C Zachos, Adele Cameron, Thomas Westerhold & Ursula Röhl
During the Paleocene-Eocene Thermal Maximum (PETM) about 56 million years ago, thousands of petagrams of carbon were released into the atmosphere and ocean in just a few thousand years, followed by a gradual sequestration over approximately 200,000 years. If silicate weathering is one of the key negative feedbacks that removed this carbon, a period of seawater calcium carbonate saturation greater than pre-event levels is expected during the event's recovery phase. In marine sediments, this should...

Spatial and temporal stability of soil microbial properties in the Jena Experiment (Germany) from 2003-2014, supplement to: Strecker, Tanja; Gonzalez, Odette; Scheu, Stefan; Eisenhauer, Nico (2016): Functional composition of plant communities determines the spatial and temporal stability of soil microbial properties in a long-term plant diversity experiment. Oikos, (accepted)

Tanja Strecker, Odette Gonzalez, Stefan Scheu & Nico Eisenhauer
The study was carried out on the main plots of a large grassland biodiversity experiment (the Jena Experiment). In the main experiment, 82 grassland plots of 20 x 20 m were established from a pool of 60 species belonging to four functional groups (grasses, legumes, tall and small herbs). In May 2002, varying numbers of plant species from this species pool were sown into the plots to create a gradient of plant species richness (1,...

Ordinary and duplicate analysis from major and trace elements of ODP Holes 146-888B and 168-1027B, supplement to: Carpentier, Marion; Weis, Dominique A M; Chauvel, Catherine (2013): Large U loss during weathering of upper continental crust: The sedimentary record. Chemical Geology, 340, 91-104

Marion Carpentier, Dominique A M Weis & Catherine Chauvel
Oceanic sediments deposited at high rate close to continents are dominated by terrigenous material. Aside from dilution by biogenic components, their chemical compositions reflect those of nearby continental masses. This study focuses on oceanic sediments coming from the juvenile Canadian Cordillera and highlights systematic differences between detritus deriving from juvenile crust and detritus from old and mature crust. We report major and trace element concentrations for 68 sediments from the northernmost part of the Cascade...

Maastrichtian calcareous nannofossils of Kronsmoor-Section, supplement to: Linnert, Christian; Engelke, Julia; Wilmsen, Markus; Mutterlose, Jörg (2016): The impact of the Maastrichtian cooling on the marine nutrient regime - evidence from mid-latitudinal calcareous nannofossils. Paleoceanography, 31(6), 696-714

Christian Linnert, Julia Engelke, Markus Wilmsen & Jörg Mutterlose
The latest Campanian-earliest Maastrichtian interval is well known as a period of intense climate cooling. This cooling caused a distinctive bipolar biogeographic distribution of calcareous nannofossil assemblages: High latitude settings were dominated by newly evolving endemic taxa, former cosmopolitan species disappeared at the same time and equatorial communities experienced an invasion of cool water taxa. The impact of this cooling on northern mid-latitude assemblages is, however, less well known. In order to overcome this gap...

CO2 concentration and stable isotope ratios of three Antarctic ice cores covering the period from 149.4 - 1.5 kyr before 1950, supplement to: Eggleston, Sarah; Schmitt, Jochen; Bereiter, Bernhard; Schneider, Robert; Fischer, Hubertus (2016): Evolution of the stable carbon isotope composition of atmospheric CO2 over the last glacial cycle. Paleoceanography, 31, n/a-n/a

Sarah Eggleston, Jochen Schmitt, Bernhard Bereiter, Robert Schneider & Hubertus Fischer
We present new d13C measurements of atmospheric CO2 covering the last glacial/interglacial cycle, complementing previous records covering Terminations I and II. Most prominent in the new record is a significant depletion in d13C(atm) of 0.5 permil occurring during marine isotope stage (MIS) 4, followed by an enrichment of the same magnitude at the beginning of MIS 3. Such a significant excursion in the record is otherwise only observed at glacial terminations, suggesting that similar processes...

Age determination of seven sediment cores from the South Pacific Ocean, supplement to: Ronge, Thomas A; Tiedemann, Ralf; Lamy, Frank; Köhler, Peter; Alloway, Brent V; De Pol-Holz, Ricardo; Pahnke, Katharina; Southon, John; Wacker, Lukas (2016): Radiocarbon constraints on the extent and evolution of the South Pacific carbon pool. Nature Communications, 7, 12 pp

Thomas A Ronge, Ralf Tiedemann, Frank Lamy, Peter Köhler, Brent V Alloway, Ricardo De Pol-Holz, Katharina Pahnke, John Southon & Lukas Wacker
During the last deglaciation, the opposing patterns of atmospheric CO2 and radiocarbon activities (D14C) suggest the release of 14C-depleted CO2 from old carbon reservoirs. Although evidences point to the deep Pacific as a major reservoir of this 14C-depleted carbon, its extent and evolution still need to be constrained. Here we use sediment cores retrieved along a South Pacific transect to reconstruct the spatio-temporal evolution of D14C over the last 30,000 years. In ~2,500-3,600 m water...

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