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Talbot, V; Giuliano, L; Bruni, V; Bianchi, Micheline (1997): Bacterial abundance in the Strait of Magellan [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.736930, Supplement to: Talbot, V et al. (1997): Bacterial abundance, production and ectoproteolytic activity in the Strait of Magellan. Marine Ecology Progress Series, 154, 293-302, https://doi.org/10.3354/meps154293

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Abstract:
Bacterial abundance, bacterial secondary production (BSP) and potential ectoproteolytic activity (PEA) were measured at 6 stations along the Strait of Magellan, South America, toward the end of summer 1995. Because of hydrological and climatic factors, 3 main areas could be identified in which the bacterial component displayed specific characteristics. In the Pacific Ocean side, subjected to freshwater inputs from rainfalls and melting of glaciers, the bacterial activities showed the highest values (BSP: 228.2 ng C/l h; PEA: 12.2 nmol/l h). The bacterial biomass was greater than the phytoplanktonic biomass, probably due to organic inputs from land stimulating the bacterial growth. The central part of the Strait demonstrated the lowest values (BSP: 32.6 ng C/l h, PEA: 4.6 nmol/l h), although the ratio of bacterial biomass to phytoplanktonic biomass was greater than 1. In the third area, the Atlantic Ocean opening, subjected to strong tidal currents, BSP and PEA displayed high values, 80 to 88.7 ng C/l h and 11.7 nmol/l h respectively. Nevertheless, the ratio of bacterial to phytoplanktonic biomass was less than 1, like in eutrophic areas. On the other hand, no impact of the tide was noted on bacterial parameters. Considering all samples measured in the 0 to 50 m layer, although BSP and PEA were positively correlated with bacterial abundance, the PEA to BSP ratio was negatively correlated with the bacterial biomass (r = -0.72, p < 0.001, n = 22). This ratio could be an indicator of trophic conditions in the 3 subsystems of the Strait.
Project(s):
Biogeochemical Processes in the Oceans and Fluxes (PROOF)
Joint Global Ocean Flux Study (JGOFS)
Coverage:
Median Latitude: -57.463889 * Median Longitude: 63.273148 * South-bound Latitude: -66.683333 * West-bound Longitude: 61.833333 * North-bound Latitude: -49.000000 * East-bound Longitude: 70.333333
Date/Time Start: 1994-02-06T00:00:00 * Date/Time End: 1994-03-08T00:00:00
Event(s):
ANTARES-II_A01 * Latitude: -52.000000 * Longitude: 62.000000 * Date/Time: 1994-02-10T00:00:00 * Campaign: MD78 (ANTARES-II) * Basis: Marion Dufresne (1972) * Method/Device: Oceanography (OCE)
ANTARES-II_A04 * Latitude: -63.000000 * Longitude: 70.333333 * Date/Time: 1994-02-18T00:00:00 * Campaign: MD78 (ANTARES-II) * Basis: Marion Dufresne (1972) * Method/Device: Oceanography (OCE)
ANTARES-II_A06 * Latitude: -66.683333 * Longitude: 61.833333 * Date/Time: 1994-02-24T00:00:00 * Campaign: MD78 (ANTARES-II) * Basis: Marion Dufresne (1972) * Method/Device: Oceanography (OCE)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
18 datasets

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Datasets listed in this publication series

  1. Talbot, V; Giuliano, L; Bruni, V et al. (1997): Bacteria biomass and production at station Antares-II_A01. https://doi.org/10.1594/PANGAEA.136291
  2. Talbot, V; Giuliano, L; Bruni, V et al. (1997): Bacteria biomass and production at station Antares-II_A01 (2). https://doi.org/10.1594/PANGAEA.136307
  3. Talbot, V; Giuliano, L; Bruni, V et al. (1997): Bacteria biomass and production at station Antares-II_A04. https://doi.org/10.1594/PANGAEA.136292
  4. Talbot, V; Giuliano, L; Bruni, V et al. (1997): Bacteria biomass and production at station Antares-II_A04 (2). https://doi.org/10.1594/PANGAEA.136308
  5. Talbot, V; Giuliano, L; Bruni, V et al. (1997): Bacteria biomass and production at station Antares-II_A06. https://doi.org/10.1594/PANGAEA.136293
  6. Talbot, V; Giuliano, L; Bruni, V et al. (1997): Bacteria biomass and production at station Antares-II_A07. https://doi.org/10.1594/PANGAEA.136294
  7. Talbot, V; Giuliano, L; Bruni, V et al. (1997): Bacteria biomass and production at station Antares-II_A08. https://doi.org/10.1594/PANGAEA.136295
  8. Talbot, V; Giuliano, L; Bruni, V et al. (1997): Bacteria biomass and production at station Antares-II_A09. https://doi.org/10.1594/PANGAEA.136296
  9. Talbot, V; Giuliano, L; Bruni, V et al. (1997): Bacteria biomass and production at station Antares-II_A10. https://doi.org/10.1594/PANGAEA.136297
  10. Talbot, V; Giuliano, L; Bruni, V et al. (1997): Bacteria biomass and production at station Antares-II_A11. https://doi.org/10.1594/PANGAEA.136298
  11. Talbot, V; Giuliano, L; Bruni, V et al. (1997): Bacteria biomass and production at station Antares-II_A12. https://doi.org/10.1594/PANGAEA.136299
  12. Talbot, V; Giuliano, L; Bruni, V et al. (1997): Bacteria biomass and production at station Antares-II_A13. https://doi.org/10.1594/PANGAEA.136300
  13. Talbot, V; Giuliano, L; Bruni, V et al. (1997): Bacteria biomass and production at station Antares-II_A14. https://doi.org/10.1594/PANGAEA.136301
  14. Talbot, V; Giuliano, L; Bruni, V et al. (1997): Bacteria biomass and production at station Antares-II_A15. https://doi.org/10.1594/PANGAEA.136302
  15. Talbot, V; Giuliano, L; Bruni, V et al. (1997): Bacteria biomass and production at station Antares-II_A16. https://doi.org/10.1594/PANGAEA.136303
  16. Talbot, V; Giuliano, L; Bruni, V et al. (1997): Bacteria biomass and production at station Antares-II_A17. https://doi.org/10.1594/PANGAEA.136304
  17. Talbot, V; Giuliano, L; Bruni, V et al. (1997): Bacteria biomass and production at station Antares-II_A18. https://doi.org/10.1594/PANGAEA.136305
  18. Talbot, V; Giuliano, L; Bruni, V et al. (1997): Bacteria biomass and production at station Antares-II_K0. https://doi.org/10.1594/PANGAEA.136306