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Lein, Alla Yu; Pimenov, Nikolay V; Vinogradov, Mikhail E; Ivanov, Mikhail V (1997): Carbon dioxide assimilation rate, gas and ion composition in samples, and bacterial production of organic matter within and above the Broken Spur and TAG hydrothermal fields, Mid-Atlantic Ridge. PANGAEA, https://doi.org/10.1594/PANGAEA.760070, Supplement to: Lein, AY et al. (1997): CO2 assimilation rate and bacterial production of organic matter above the hydrothermal fields at 26°N and 29°N at the Mid-Atlantic Ridge. Translated from Okeanologiya, 1997, 37(3), 396-407, Oceanology, 37(3), 359-369

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Abstract:
Rate of CO2 assimilation was determined above the Broken Spur and TAG active hydrothermal fields for three main ecosystems: (1) hydrothermal vents; (2) 300 m near-bottom layer of plume water; and (3) bottom sediments. In water samples from warm (40-45°C) vents assimilation rates were maximal and reached 2.82-3.76 µg C/l/day. In plume waters CO2 assimilation rates ranged from 0.38 to 0.65 µg C/l/day. In bottom sediments CO2 assimilation rates varied from 0.8 to 28.0 µg C/l/day, rising up to 56 mg C/kg/day near shrimp swarms. In the most active plume zone of the long-living TAG field bacterial production of organic matter (OM) from carbonic is up to 170 mg C/m**2/day); production of autotrophic process of bacterial chemosynthesis reaches about 90% (156 mg C/m**2/day). Thus, chemosynthetic production of OM in September-October is almost equal to that of photosynthetic production in the oceanic region. Bacterial production of OM above the Broken Spur hydrothermal field is one order lower and reaches only 20 mg C/m**2/day.
Project(s):
Coverage:
Median Latitude: 27.594840 * Median Longitude: -44.031560 * South-bound Latitude: 26.120600 * West-bound Longitude: -44.844500 * North-bound Latitude: 29.197100 * East-bound Longitude: -43.151700
Date/Time Start: 1994-09-17T00:00:00 * Date/Time End: 1994-09-17T00:00:00
Event(s):
AMK34-3335 * Latitude Start: 29.115700 * Longitude Start: -43.174100 * Latitude End: 29.197100 * Longitude End: -43.172000 * Elevation: -3160.0 m * Location: Mid Atlantic Ridge * Campaign: AMK34 * Basis: Akademik Mstislav Keldysh * Device: Bottle, Niskin (NIS)
AMK34-3338 * Latitude: 29.159333 * Longitude: -43.183333 * Elevation: -3043.0 m * Location: Broken Spur Hydrothermal Field * Campaign: AMK34 * Basis: Akademik Mstislav Keldysh * Device: Bottle, Niskin (NIS)
AMK34-3347 * Latitude Start: 29.133800 * Longitude Start: -43.175800 * Latitude End: 29.131700 * Longitude End: -43.151700 * Elevation: -3179.0 m * Location: Mid Atlantic Ridge * Campaign: AMK34 * Basis: Akademik Mstislav Keldysh * Device: Bottle, Niskin (NIS)
Size:
8 datasets

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Datasets listed in this Collection

  1. Lein, AY; Pimenov, NV; Vinogradov, ME et al. (1997): (Table 1) Gas composition of hydrothermal fluids from the Broken Spur and TAG hydrothermal fields. https://doi.org/10.1594/PANGAEA.760061
  2. Lein, AY; Pimenov, NV; Vinogradov, ME et al. (1997): (Table 2) End member concentrations of gases in hot water samples from black smokers of the TAG and Broken Spur hydrothermal fields in August-October 1994. https://doi.org/10.1594/PANGAEA.760060
  3. Lein, AY; Pimenov, NV; Vinogradov, ME et al. (1997): (Table 3) Carbon-14 dioxide assimilation rate in water samples from the Broken Spur and TAG hydrothermal fields. https://doi.org/10.1594/PANGAEA.760063
  4. Lein, AY; Pimenov, NV; Vinogradov, ME et al. (1997): (Table 4) Carbon-14 dioxide assimilation rate in vertical water sections above the Broken Spur and TAG hydrothermal fields. https://doi.org/10.1594/PANGAEA.760064
  5. Lein, AY; Pimenov, NV; Vinogradov, ME et al. (1997): (Table 5) Carbon-14 dioxide assimilation rate in bottom sediments from the Broken Spur and TAG hydrothermal fields. https://doi.org/10.1594/PANGAEA.760065
  6. Lein, AY; Pimenov, NV; Vinogradov, ME et al. (1997): (Table 6) Carbon-14 dioxide assimilation rate and bacterial production of organic carbon from carbonic acid in waters above the Broken Spur and TAG hydrothermal fields. https://doi.org/10.1594/PANGAEA.760066
  7. Lein, AY; Pimenov, NV; Vinogradov, ME et al. (1997): (Table 7a) Azide, sulfide, ammonium chloride and thiosulfate influences on carbon-14 dioxide assimilation rates in water samples from the Broken Spur and TAG hydrothermal fields. https://doi.org/10.1594/PANGAEA.760067
  8. Lein, AY; Pimenov, NV; Vinogradov, ME et al. (1997): (Table 7b) Azide, ammonium chloride and thiosulfate influences on carbon-14 dioxide assimilation rates in sediments from the Broken Spur and TAG hydrothermal fields. https://doi.org/10.1594/PANGAEA.760068