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Le Borgne, Robert; Rodier, Martine; Le Bouteiller, Aubert; Murray, James W (1999): Primary production of carbon in the equatorial uowelling. PANGAEA, https://doi.org/10.1594/PANGAEA.740015, Supplement to: Le Borgne, R et al. (1999): Zonal variability of plankton and particle export flux in the equatorial Pacific upwelling between 165°E and 150°W. Oceanologica Acta, 22(1), 57-66, https://doi.org/10.1016/S0399-1784(99)80033-4

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Abstract:
Observations made during a "La Niña" situation (April-May 1996) in the equatorial Pacific upwelling, between 165° E and 150° W, show the classic deepening of hydrological isolines from east to west, resulting in zonal gradients for surface temperature and macronutrients. However, contrasting with such a gradient, no clear zonal variation could be seen for integrated planktonic biomasses and carbon fluxes, namely: chlorophyll a, bacterial abundances, particulate organic phosphorus, mesozooplankton ash-free dry weight, primary production, and the sinking flux of particulate organic carbon (POC). Moreover, mean values of these parameters along the zonal equatorial transect, are not significantly different from those of a 7-day-long time series station made at 0°, 150° W in October 1994 during an El Niño period. Such a steady zonal distribution of planktonic parameters seems to be characteristic of equatorial Pacific upwelling west of the Galapagos Islands so that the spatial distributions of nutrient concentrations and planktonic biomass appear to be uncoupled. This is consistent with the High Nutrient-Low Chlorophyll (HNLC) concept, in which primary production is not controlled directly by macronutrient concentrations. The lack of zonal gradient also suggests that carbon budget of the equatorial Pacific is primarily controlled by oscillations in the zonal and meridian extension of the HNLC area, rather than by values of planktonic biomasses and carbon fluxes within the upwelled water, which are quite constant.
Coverage:
Median Latitude: -0.030777 * Median Longitude: -169.941031 * South-bound Latitude: -0.416700 * West-bound Longitude: 166.350000 * North-bound Latitude: 0.350000 * East-bound Longitude: -149.400000
Date/Time Start: 1994-10-02T16:42:00 * Date/Time End: 1994-10-25T13:05:00
Event(s):
FLUPAC_023 * Latitude: 0.000000 * Longitude: 166.983300 * Date/Time: 1994-10-02T16:42:00 * Location: Equatorial Pacific * Campaign: FLUPAC * Basis: L Atalante * Method/Device: CTD/Rosette (CTD-RO)
FLUPAC_029 * Latitude: -0.116700 * Longitude: 166.816700 * Date/Time: 1994-10-03T17:27:00 * Location: Equatorial Pacific * Campaign: FLUPAC * Basis: L Atalante * Method/Device: CTD/Rosette (CTD-RO)
FLUPAC_035 * Latitude: 0.000000 * Longitude: 166.633300 * Date/Time: 1994-10-04T16:09:00 * Location: Equatorial Pacific * Campaign: FLUPAC * Basis: L Atalante * Method/Device: CTD/Rosette (CTD-RO)
Size:
13 datasets

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Datasets listed in this publication series

  1. Le Borgne, R; Rodier, M; Le Bouteiller, A et al. (1999): Primary production of carbon at station FLUPAC_023. https://doi.org/10.1594/PANGAEA.187045
  2. Le Borgne, R; Rodier, M; Le Bouteiller, A et al. (1999): Primary production of carbon at station FLUPAC_029. https://doi.org/10.1594/PANGAEA.187046
  3. Le Borgne, R; Rodier, M; Le Bouteiller, A et al. (1999): Primary production of carbon at station FLUPAC_035. https://doi.org/10.1594/PANGAEA.187047
  4. Le Borgne, R; Rodier, M; Le Bouteiller, A et al. (1999): Primary production of carbon at station FLUPAC_041. https://doi.org/10.1594/PANGAEA.187048
  5. Le Borgne, R; Rodier, M; Le Bouteiller, A et al. (1999): Primary production of carbon at station FLUPAC_047. https://doi.org/10.1594/PANGAEA.187049
  6. Le Borgne, R; Rodier, M; Le Bouteiller, A et al. (1999): Primary production of carbon at station FLUPAC_053. https://doi.org/10.1594/PANGAEA.187050
  7. Le Borgne, R; Rodier, M; Le Bouteiller, A et al. (1999): Primary production of carbon at station FLUPAC_082. https://doi.org/10.1594/PANGAEA.187051
  8. Le Borgne, R; Rodier, M; Le Bouteiller, A et al. (1999): Primary production of carbon at station FLUPAC_088. https://doi.org/10.1594/PANGAEA.187052
  9. Le Borgne, R; Rodier, M; Le Bouteiller, A et al. (1999): Primary production of carbon at station FLUPAC_094. https://doi.org/10.1594/PANGAEA.187053
  10. Le Borgne, R; Rodier, M; Le Bouteiller, A et al. (1999): Primary production of carbon at station FLUPAC_100. https://doi.org/10.1594/PANGAEA.187054
  11. Le Borgne, R; Rodier, M; Le Bouteiller, A et al. (1999): Primary production of carbon at station FLUPAC_106. https://doi.org/10.1594/PANGAEA.187055
  12. Le Borgne, R; Rodier, M; Le Bouteiller, A et al. (1999): Primary production of carbon at station FLUPAC_112. https://doi.org/10.1594/PANGAEA.187056
  13. Le Borgne, R; Rodier, M; Le Bouteiller, A et al. (1999): Primary production of carbon at station FLUPAC_118. https://doi.org/10.1594/PANGAEA.187057