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Lein, Alla Yu; Kravchishina, Marina D; Politova, Nadezhda V; Savvichev, Alexander S; Veslopolova, E F; Mitskevich, Irina N; Ul'yanova, Nina V; Shevchenko, Vladimir P; Ivanov, Mikhail V (2012): Results of biogeochemical studies in the Russian Arctic seas: isotope and radioisotope data. PANGAEA, https://doi.org/10.1594/PANGAEA.785619, Supplement to: Lein, AY et al. (2012): Transformation of particulate organic matter at the water-bottom boundary in the Russian Arctic seas: Evidence from isotope and radioisotope data. Translated from Litologiya i Poleznye Iskopaemye, 2012, 2, 115-145, Lithology and Mineral Resources, 47(2), 99-128, https://doi.org/10.1134/S0024490212020034

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Abstract:
Comprehensive biogeochemical studies including determination of isotopic composition of organic carbon in both suspended matter and surface layer (0-1 cm) bottom sediments (more than 260 determinations of d13C-Corg) were carried out for five Arctic shelf seas: White, Barents, Kara, East Siberian, and Chukchi Seas. The aim of this study is to elucidate causes that change isotopic composition of particulate organic carbon at the water-sediment boundary. It is shown that isotopic composition of organic carbon in sediments from seas with high river run-off (White, Kara, and East Siberian Seas) does not inherit isotopic composition of organic carbon in particles precipitating from the water column, but is enriched in 13C. Seas with low river run-off (Barents and Chukchi Seas) show insignificant difference between d13C-Corg values in both suspended load and sediments because of low content of isotopically light allochthonous organic matter in suspended matter. Biogeochemical studies with radioisotope tracers (14CO2, 35S, and 14CH4) revealed existence of specific microbial filter formed from heterotrophic and autotrophic organisms at the water-sediment boundary. This filter prevents mass influx of products of organic matter decomposition into the water column, as well as reduces influx of OM contained in suspended matter from water into sediments.
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Coverage:
Median Latitude: 69.389616 * Median Longitude: 67.845658 * South-bound Latitude: 64.075017 * West-bound Longitude: 9.517800 * North-bound Latitude: 82.000000 * East-bound Longitude: -164.200000
Date/Time Start: 1996-08-21T00:00:00 * Date/Time End: 2007-09-30T15:55:00
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23 datasets

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Datasets listed in this publication series

  1. Lein, AY; Kravchishina, MD; Politova, NV et al. (2012): (Table 1-1) Concentrations of suspended matter, particulate organic carbon, and n-alkanes in waters of the White Sea in August 2003. https://doi.org/10.1594/PANGAEA.785319
  2. Lein, AY; Kravchishina, MD; Politova, NV et al. (2012): (Table 1-2) Concentrations of organic carbon and n-alkanes in suface layer bottom sediments of the White Sea in August 2003. https://doi.org/10.1594/PANGAEA.785320
  3. Lein, AY; Kravchishina, MD; Politova, NV et al. (2012): (Table 2-1) Distribution of total population of microorganisms, dark CO2 assimilation rate, and δ¹³C-Corg values in particulate mater from waters of the White Sea in August 2006. https://doi.org/10.1594/PANGAEA.785321
  4. Lein, AY; Kravchishina, MD; Politova, NV et al. (2012): (Table 2-2) Distribution of total population of microorganisms and δ¹³C-Corg values in the most surface layer of bottom sediments collected by Niemistoe corers in the White Sea in August 2006. https://doi.org/10.1594/PANGAEA.785322
  5. Lein, AY; Kravchishina, MD; Politova, NV et al. (2012): (Table 3-1) Concentrations of suspended matter, particulate organic carbon, carbonate carbon, total carbon and δ¹³C-Corg values in suspended mater from waters of the White Sea in July 2010. https://doi.org/10.1594/PANGAEA.785323
  6. Lein, AY; Kravchishina, MD; Politova, NV et al. (2012): (Table 3-2) Concentrations particulate organic carbon, carbonate carbon, total carbon and δ¹³C-Corg values in suspended mater from the most surface layer of bottom sediments collected by Niemistoe corers in the White Sea in July 2010. https://doi.org/10.1594/PANGAEA.785594
  7. Lein, AY; Kravchishina, MD; Politova, NV et al. (2012): (Table 4-1) Total population of microorganisms, their sizes and biomass in suspended matter from the water column of the White Sea in July 2010. https://doi.org/10.1594/PANGAEA.785595
  8. Lein, AY; Kravchishina, MD; Politova, NV et al. (2012): (Table 4-2) Total population of microorganisms in suspended matter from the flutty layer of bottom sediments collected by Niemistoe corers in the White Sea in July 2010. https://doi.org/10.1594/PANGAEA.785597
  9. Lein, AY; Kravchishina, MD; Politova, NV et al. (2012): (Table 5) Concentration of methane, rates of its formation and oxidation, as well as rates of sulfate reduction and dark CO2 assimilation in the water column of the White Sea. https://doi.org/10.1594/PANGAEA.785601
  10. Lein, AY; Kravchishina, MD; Politova, NV et al. (2012): (Table 6) Characteristics of suspended matter, microbial mats, and surface sediments in the littoral zone of the Kandalaksha Bay, White Sea. https://doi.org/10.1594/PANGAEA.785602
  11. Lein, AY; Kravchishina, MD; Politova, NV et al. (2012): (Table 7) Isotopic composition of organic carbon and percentage of newly formed organic carbon in total organic carbon content in surface layer bottom sediments of the White Sea in August 2006. https://doi.org/10.1594/PANGAEA.785603
  12. Lein, AY; Kravchishina, MD; Politova, NV et al. (2012): (Table 8) Isotopic composition of organic carbon in suspended matter and percentage of newly formed organic carbon in total organic carbon content in the fluffy layer of the Dvina Bay, White Sea in July 2010. https://doi.org/10.1594/PANGAEA.785605
  13. Lein, AY; Kravchishina, MD; Politova, NV et al. (2012): (Table 10-1) Parameters of the water column in the Kara Sea along the section from the Ob River mouth to the Saint Anna Trough in September 2007. https://doi.org/10.1594/PANGAEA.785607
  14. Lein, AY; Kravchishina, MD; Politova, NV et al. (2012): (Table 10-2) Parameters of the water column in the Kara Sea along the section ftom the Yamal Peninsula to the Novaya Zemlya in September 2007. https://doi.org/10.1594/PANGAEA.785609
  15. Lein, AY; Kravchishina, MD; Politova, NV et al. (2012): (Table 11-1) Values of dark carbon dioxide assimilation in supra bottom water and surface layer bottom sediments of the Kara Sea along the section from the Ob River mouth to the Saint Anna Trough in September 2007. https://doi.org/10.1594/PANGAEA.785610
  16. Lein, AY; Kravchishina, MD; Politova, NV et al. (2012): (Table 11-2) Values of dark carbon dioxide assimilation in supra bottom water and surface layer sediments of the Kara Sea along the section from the Yamal Peninsula to the Novaya Zemlya in September 2007. https://doi.org/10.1594/PANGAEA.785611
  17. Lein, AY; Kravchishina, MD; Politova, NV et al. (2012): (Table 12) Distribution of total population of microorganisms, CO2 assimilation rate, and δ¹³C-Corg values in suspended mater from waters of the Barents Sea in September-October 1998. https://doi.org/10.1594/PANGAEA.785612
  18. Lein, AY; Kravchishina, MD; Politova, NV et al. (2012): (Table 13) Isotopic composition of organic carbon in surface layer bottom sediments of the Norwegian Sea. https://doi.org/10.1594/PANGAEA.785614
  19. Lein, AY; Kravchishina, MD; Politova, NV et al. (2012): (Table 14) Total population of microorganisms and dark CO2 assimilation rate in surface layer bottom sediments of the Barents Sea. https://doi.org/10.1594/PANGAEA.785613
  20. Lein, AY; Kravchishina, MD; Politova, NV et al. (2012): (Table 15-1) Distribution of total population of microorganisms, dark CO2 assimilation rate, and δ¹³C-Corg values in particulate mater from waters of the Chukchi Sea in August 2004. https://doi.org/10.1594/PANGAEA.785615
  21. Lein, AY; Kravchishina, MD; Politova, NV et al. (2012): (Table 15-2) Distribution of dark CO2 assimilation rate and δ¹³C-Corg values in surface layer bottom sediments of the Chukchi Sea collected in August 2004. https://doi.org/10.1594/PANGAEA.785616
  22. Lein, AY; Kravchishina, MD; Politova, NV et al. (2012): (Table 16-1) Distribution of δ¹³C-Corg in suspended matter from the surface and near-bottom layers of the water column in the East Siberian and Chukchi seas in September 2009. https://doi.org/10.1594/PANGAEA.785617
  23. Lein, AY; Kravchishina, MD; Politova, NV et al. (2012): (Table 16-2) Distribution of δ¹³C-Corg in surface layer bottom sediments from the East Siberian and Chukchi Seas sampled in September 2009. https://doi.org/10.1594/PANGAEA.785618