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Lein, Alla Yu; Savvichev, Alexander S; Rusanov, Igor I; Pavlova, Galina A; Belyaev, Nikolay A; Crane, Kathleen; Pimenov, Nikolay V; Ivanov, Mikhail V (2007): Biogeochemical parameters and processes in waters and bottom sediments of the Chukchi Sea [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.785894, Supplement to: Lein, AY et al. (2007): Biogeochemical processes in the Chukchi Sea. Translated from Litologiya i Poleznye Iskopaemye, 2007, 3, 247-266, Lithology and Mineral Resources, 42(3), 221-239, https://doi.org/10.1134/S0024490207030029

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Abstract:
Study of biogeochemical processes in waters and sediments of the Chukchi Sea in August 2004 revealed atypical maxima of biogenic element (N, P, and Si) concentrations and rate of microbial sulfate reduction in the surface layer (0-3 cm) of marine sediments. The C/N/P ratio in organic matter (OM) of this layer does not fit the Redfield-Richards stoichiometric model. Specific features of biogeochemical processes in the sea are likely related to the complex dynamics of water, high primary produc¬tivity (110-1400 mg C/m**2/day), low depth of the basin (<50 m for 60% of the water area), reduced food chain due to low population of zooplankton, high density of zoobenthos (up to 4230 g/m**2), and high activity of microbial processes. Drastic decrease in concentrations of biogenic elements, iodine, total alkalinity, and population of microorganisms beneath the 0-3 cm layer testify to large-scale OM decay at the water-seafloor barrier. Our original experimental data support high annual rate of OM mineralization at the bottom of the Chukchi Sea.
Project(s):
Archive of Ocean Data (ARCOD)
Coverage:
Median Latitude: 69.574585 * Median Longitude: -172.410665 * South-bound Latitude: 65.650000 * West-bound Longitude: -176.000000 * North-bound Latitude: 72.317270 * East-bound Longitude: -166.912450
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
5 datasets

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Datasets listed in this publication series

  1. Lein, AY; Savvichev, AS; Rusanov, II et al. (2007): (Table 1) Primary productivity, concentration of suspended matter, particulate and dissolved organic carbon concentrations, δ¹³C-Corg in suspended matter, and rate of dark CO2 assimilation in the water column of the Chukchi Sea. https://doi.org/10.1594/PANGAEA.785884
  2. Lein, AY; Savvichev, AS; Rusanov, II et al. (2007): (Table 2) Characteristics of bottom sediments from the Chukchi Sea. https://doi.org/10.1594/PANGAEA.785886
  3. Lein, AY; Savvichev, AS; Rusanov, II et al. (2007): (Table 3) Distribution of n-alkanes in surface layer bottom sediments of the Chukchi Sea. https://doi.org/10.1594/PANGAEA.785888
  4. Lein, AY; Savvichev, AS; Rusanov, II et al. (2007): (Table 4) Chemical composition of interstitial waters from bottom sediments of the Chukchi Sea. https://doi.org/10.1594/PANGAEA.785890
  5. Lein, AY; Savvichev, AS; Rusanov, II et al. (2007): (Table 5) Rates of microbial processes in bottom sediments of the Chukchi Sea. https://doi.org/10.1594/PANGAEA.785892