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PANGAEA tech-keyword 'citableWithChilds' (56524 data sets)

Mostrando recursos 1 - 20 de 139.678

  1. Discharge of a small Low Arctic watershed on Herschel Island (2015)

    Coch, Caroline; Lamoureux, Scott; Knoblauch, Christian; Eischeid, Isabell; Fritz, Michael; Obu, Jaroslav; Lantuit, Hugues

  2. Guano birds in the Humboldt Current System off Peru during the last 150 years

    Salvatteci, Renato

  3. Anchovy and sardine scaled depostion rates in the Humboldt Current System off Peru during the last 150 years

    Salvatteci, Renato

  4. SST gradients in the Humboldt Current System off Peru during the last 150 years

    Salvatteci, Renato

  5. Age, TOC and deposition rates measured on cores B04 and B05 off Peru

    Salvatteci, Renato

  6. Fish scale deposition rates and export production from 1860 to 2005 AD off Peru

    Salvatteci, Renato; Field, David; Gutièrrez, Dimitri; Baumgartner, Tim; Ferreira, Leonardo V; Ortlieb, Luc; Sifeddine, Abdelfettah; Grados, Carmen; Bertrand, Arnaud
    The Humboldt Current System (HCS) has the highest production of forage fish in the world, although it is highly variable and the future of the primary component, anchovy, is uncertain in the context of global warming. Paradigms based on late 20th century observations suggest that large-scale forcing controls decadal-scale fluctuations of anchovy and sardine across different boundary currents of the Pacific. We develop records of anchovy and sardine fluctuations since 1860 AD using fish scales from multiple sites containing laminated sediments and compare them with Pacific basin-scale and regional indices of ocean climate variability. Our records reveal two main anchovy...

  7. Occurence of benthic foraminifera off Boknis Eck, western Baltic Sea (Tables 12-24)

    Wefer, Gerold
    Samples of algae and sediment were taken between July 1973 and May 1975 at intervals of 2-5 weeks from a number of depths at the entrance of Eckernförder Bay (Western Baltic Seal. The purpose was to ascertain the correlation between the settlement of foraminifera and ecofactors, and to determine the annual carbonate production by foraminifera. Produection data were compared with the foraminifera content of the sediments. Information on the extend and place of dissolution could be gained by measuring the saturation of the water with mineral carbonates. The exact area of colonisation (=sediment surfaee, in the sediment or on algae, Fig....

  8. Distribution and isotopic composition of trimethylamine, dimethylsulfide and dimethylsulfoniopropionate in sediment core M5

    Zhuang, Guang-Chao; Lin, Yu-Shih; Bowles, Marshall W; Heuer, Verena B; Lever, Mark A; Elvert, Marcus; Hinrichs, Kai-Uwe

  9. Distribution and isotopic composition of trimethylamine, dimethylsulfide and dimethylsulfoniopropionate in sediment core M1

    Zhuang, Guang-Chao; Lin, Yu-Shih; Bowles, Marshall W; Heuer, Verena B; Lever, Mark A; Elvert, Marcus; Hinrichs, Kai-Uwe

  10. Distribution and isotopic composition of trimethylamine, dimethylsulfide and dimethylsulfoniopropionate in marine sediments of Aarhus Bay

    Zhuang, Guang-Chao; Lin, Yu-Shih; Bowles, Marshall W; Heuer, Verena B; Lever, Mark A; Elvert, Marcus; Hinrichs, Kai-Uwe
    Methylated amines and sulfides are ubiquitous organic nitrogen and sulfur compounds in the marine environment and could serve as important energy substrates to methanogens inhabiting anoxic sediments. However, their abundance and isotopic values remain largely unconstrained in marine sediments. In this study, we investigated the distribution of trimethylamine (TMA), dimethylsulfide (DMS) and dimethylsulfoniopropionate (DMSP) in Aarhus Bay, Denmark and provided the first report for their stable carbon isotopic composition. Simultaneous measurement of those two compounds in small volumes of pore waters and sediments was accomplished with gas chromatography in combination with either a purge and trap system for quantification or...

  11. Flux summary of measured hydrochemical parameters and statistics on concentrations for 2014, 2015 and 2016

    Coch, Caroline; Lamoureux, Scott; Knoblauch, Christian; Eischeid, Isabell; Fritz, Michael; Obu, Jaroslav; Lantuit, Hugues

  12. Hydrochemistry of a small Low Arctic watershed on Herschel Island (2015)

    Coch, Caroline; Lamoureux, Scott; Knoblauch, Christian; Eischeid, Isabell; Fritz, Michael; Obu, Jaroslav; Lantuit, Hugues

  13. Hydrochemistry of a small Low Arctic watershed on Herschel Island (2014)

    Coch, Caroline; Lamoureux, Scott; Knoblauch, Christian; Eischeid, Isabell; Fritz, Michael; Obu, Jaroslav; Lantuit, Hugues

  14. Discharge of a small Low Arctic watershed on Herschel Island (2014)

    Coch, Caroline; Lamoureux, Scott; Knoblauch, Christian; Eischeid, Isabell; Fritz, Michael; Obu, Jaroslav; Lantuit, Hugues

  15. Measured discharge, hydrochemical parameters and computed fluxes (DOC, DN, solutes, suspended sediment) of a small Low Arctic watershed on Herschel Island (2014-2016)

    Coch, Caroline; Lamoureux, Scott; Knoblauch, Christian; Eischeid, Isabell; Fritz, Michael; Obu, Jaroslav; Lantuit, Hugues
    Water samples were collected at the outflow of Ice Creek West on Herschel Island, Yukon Territory, Canada in the summers of 2014, 2015 and 2016 using an automatic water sampler (ISCO 3700).

  16. (Pages 203-204) Concentration in Aluminium-26 in layers of a ferromanganese crust recovered in the Pacific Ocean

    Reyss, Jean-Louis; Yokoyama, Y
    Manganese nodules are generally considered to have accumulated very slowly. Radiometric studies by 230Th, 231Pa, and 234U/238U suggest their growth rates to be a few mm per 10 million yr. This leads to an enigma: how do they escape from burial by associated marine sediments which are accumulating three orders of magnitude faster than the nodules? Though this problem remains open, the postulated slow growth rates might permit manganese nodules to accumulate in a small volume high concentrations of long lived cosmogenic radionuclides 10Be (half tau = 1.5 Myr) and 26Al (half tau = 0.715 Myr) which were formed through...

  17. Sedimentology of profile PS1824 at Gunnerus Ridge, Antarctica

    Maus, Bastian
    Das untersuchte Sedimentmaterial stammt aus dem westlich des Gunnerus-Rückens liegenden Tiefseebereich des Riiser-Larsenmeeres aus ca. 4480 m Wassertiefe. An den unverfestigten Sedimentkernproben eines etwa 13,40 m langen Schwerelotes (PS1824-1) und eines ca. 50 cm langen Großkastengreifers (PS1824-2) wurden umfangreiche sedimentphysikalische und sedimentologische Untersuchungsmethoden angewandt. Neben zerstörungsfreien, sedimentphysikalischen Messungen zur Ermittlung von Suszeptibilität, elektrischen Widerstand, P-Wellengeschwindigkeit und Feuchtraumdichte, wurden unter anderem die Korngrößenverteilung, der Karbonat- und Corg-Gehalt sowie die Komponentenverteilung der Sandfraktion bestimmt. Die zeitliche Einstufung basiert auf biostratigraphischen Datierungsmethoden mit Hilfe von Radiolarien und Diatomeen. Die untersuchten Sedimente umfassen demnach einen Ablagerungszeitraum vom Pliozän bis in das Holozän. Die Abfolgen...

  18. Allele matrix of 11 microsatellites in Plenaster craigi for 4 areas and 30 populations

    Taboada, Sergi; Riesgo, Ana; Wiklund, Helena; Paterson, Gordon L J; Koutsouveli, Vasiliki; Santodomingo, Nadia; Dale, Andrew C; Smith, Craig R; Jones, Daniel O B; Dahlgren, Thomas G; Glover, Adrian G
    The excel file has two spread-sheets: (i) "Microsatellites-4Areas" including the information of the 11 microsatellites used in the paper for the four different areas we investigated; (ii) "Microsatellites-30Populations" including the information of the 11 microsatellites used in the paper for the 30 different populations we investigated. In the two spread-sheets we include the following columns: "Number of individual" from 1 to 168; "Area" with the names of the areas or populations for every individual; "Sample Code" with the name of the sample used in the paper; "1Ple, 3Ple, 11Ple, 13Ple, 12Ple, 14Ple, 16Ple, 5Ple, 19Ple, 10Ple, and 2Ple" the name of...

  19. NanoSIMS data, 13C assimilation in the symbiotic dinoflagellates and their foraminiferal host (Orbulina universa)

    LeKieffre, Charlotte; Spero, Howard J; Russell, Ann D; Fehrenbacher, Jennifer; Geslin, Emmanuelle; Meibom, Anders
    Here we performed pulse-chase experiments with 13C-enriched dissolved inorganic carbon, followed by TEM and quantitative NanoSIMS isotopic imaging to visualize photosynthetic C assimilation by individual symbiotic dinoflagellates and subsequent translocation to their Orbulina universa host. NanoSIMS image processing was carried out as described in LeKieffre et al. (2017) and Nomaki et al. (2018). Briefly, TEM images were aligned with corresponding NanoSIMS 12C14N- images (Online Resource 1) using the software Look@NanoSIMS (Polerecky et al. 2012), which allows a user to hand-draw regions of interest (ROIs) corresponding to different organelles (e.g., dinoflagellate starch grains, foraminiferal lipid droplets, and fibrillar bodies). For each type...

  20. Grain size analyses of sediment core EV13

    Wündsch, Michael; Haberzettl, Torsten; Cawthra, Hayley; Kirsten, Kelly L; Quick, Lynne J; Zabel, Matthias; Frenzel, Peter; Hahn, Annette; Baade, Jussi; Daut, Gerhard; Kasper, Thomas; Meadows, Michael E; Mäusbacher, Roland

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