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Denis, Michel; Martin, Valérie; Momzikoff, André; Gondry, Geneviève; Stemmann, Lars; Demers, Serge; Gorsky, G; Andersen, Valérie (2003): Anundance of phytoplankton at time series station DYNAPROC [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.738712, Supplement to: Denis, M et al. (2003): Pulsed remineralisation in the northwestern Mediterranean Sea: a hypothesis. Journal of Marine Systems, 39(1-2), 19-41, https://doi.org/10.1016/S0924-7963(02)00244-0

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Abstract:
A general study of biogeochemical processes (DYNAPROC cruise) was conducted in May 1995 at a time-series station in the open northwestern Mediterranean Sea where horizontal advection was weak. Short-term variations of the vertical distributions of pico- and nanophytoplankton were investigated over four 36-h cycles, along with parallel determinations of metabolic CO2 production rates and amino acid-containing colloid (AACC) concentrations at the chlorophyll maximum depth. The vertical (0-1000-m depth) distributions of (i) AACC, (ii) suspended particles and (iii) metabolic CO2 production rate were documented during the initial and final stages of these 36-h cycles. This study was concerned with diel vertical migration (DVM) of zooplankton, which provided periodic perturbations. Accordingly, the time scale of the experimental work varied from a few hours to a few days.
Although all distributions exhibited a periodic behaviour, AACC distributions were generally not linked to diel vertical migrations. In the subsurface layer, Synechococcus made the most abundant population and large variations in concentration were observed both at day and at night. The corresponding integrated (over the upper 90 m) losses of Synechococcus during one night pointed to a potential source of exported organic matter amounting to 534 mg C/m**2. This study stresses the potential importance of organic matter export from the euphotic zone through the daily grazing activity of vertically migrating organisms, which would not be accounted for by measurements at longer time scales.
The metabolic CO2 production exhibited a peak of activity below 500 m that was shifted downward, apparently in a recurrent way and independently of the vertical distributions of AACC or of suspended particulate material. To account for this phenomenon, a 'sustained wave train» hypothesis is proposed that combines the effect of the diel superficial faecal pellet production by swarming migrators and the repackaging activity of the nonmigrating midwater populations. Our results confirm the recent finding that the particulate compartment is not the major source of the observed instantaneous remineralisation rate and shed a new light on the fate of organic matter in the aphotic zone.
Project(s):
Biogeochemical Processes in the Oceans and Fluxes (PROOF)
Joint Global Ocean Flux Study (JGOFS)
Southern European Seas: Assessing and Modelling Ecosystem Changes (SESAME)
Funding:
Sixth Framework Programme (FP6), grant/award no. 36949: Southern European Seas: Assessing and Modelling Ecosystem Changes
Coverage:
Median Latitude: 43.259507 * Median Longitude: 7.532988 * South-bound Latitude: 43.250320 * West-bound Longitude: 7.512090 * North-bound Latitude: 43.420000 * East-bound Longitude: 7.863333
Date/Time Start: 1995-05-07T05:28:00 * Date/Time End: 1995-05-31T21:58:00
Event(s):
DYNAPROC_076 * Latitude: 43.253990 * Longitude: 7.514450 * Date/Time: 1995-05-07T05:28:00 * Campaign: DYNAPROC * Basis: Le Suroît * Method/Device: CTD/Rosette (CTD-RO)
DYNAPROC_104 * Latitude: 43.251070 * Longitude: 7.518320 * Date/Time: 1995-05-10T15:15:00 * Campaign: DYNAPROC * Basis: Le Suroît * Method/Device: CTD/Rosette (CTD-RO)
DYNAPROC_107 * Latitude: 43.251900 * Longitude: 7.516580 * Date/Time: 1995-05-11T10:00:00 * Campaign: DYNAPROC * Basis: Le Suroît * Method/Device: CTD/Rosette (CTD-RO)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
45 datasets

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Datasets listed in this publication series

  1. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_076. https://doi.org/10.1594/PANGAEA.184940
  2. Denis, M; Martin, V; Momzikoff, A et al. (2003): ETS activity of oxygen at station DYNAPROC_104. https://doi.org/10.1594/PANGAEA.185045
  3. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_107. https://doi.org/10.1594/PANGAEA.184941
  4. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_108. https://doi.org/10.1594/PANGAEA.184942
  5. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_109. https://doi.org/10.1594/PANGAEA.184943
  6. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_110. https://doi.org/10.1594/PANGAEA.184944
  7. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_112. https://doi.org/10.1594/PANGAEA.184945
  8. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_113. https://doi.org/10.1594/PANGAEA.184946
  9. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_116. https://doi.org/10.1594/PANGAEA.184947
  10. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_117. https://doi.org/10.1594/PANGAEA.184948
  11. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_119. https://doi.org/10.1594/PANGAEA.184949
  12. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_120. https://doi.org/10.1594/PANGAEA.184950
  13. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_128. https://doi.org/10.1594/PANGAEA.184951
  14. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_129. https://doi.org/10.1594/PANGAEA.184952
  15. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_131. https://doi.org/10.1594/PANGAEA.184953
  16. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_132. https://doi.org/10.1594/PANGAEA.184954
  17. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_133. https://doi.org/10.1594/PANGAEA.184955
  18. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_135. https://doi.org/10.1594/PANGAEA.184956
  19. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_137. https://doi.org/10.1594/PANGAEA.184957
  20. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_139. https://doi.org/10.1594/PANGAEA.184958
  21. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_141. https://doi.org/10.1594/PANGAEA.184959
  22. Denis, M; Martin, V; Momzikoff, A et al. (2003): ETS activity of oxygen at station DYNAPROC_142. https://doi.org/10.1594/PANGAEA.185046
  23. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_198. https://doi.org/10.1594/PANGAEA.184960
  24. Denis, M; Martin, V; Momzikoff, A et al. (2003): ETS activity of oxygen at station DYNAPROC_244. https://doi.org/10.1594/PANGAEA.185047
  25. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_250. https://doi.org/10.1594/PANGAEA.184961
  26. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_251. https://doi.org/10.1594/PANGAEA.184962
  27. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_252. https://doi.org/10.1594/PANGAEA.184963
  28. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_254. https://doi.org/10.1594/PANGAEA.184964
  29. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_255. https://doi.org/10.1594/PANGAEA.184965
  30. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_257. https://doi.org/10.1594/PANGAEA.184966
  31. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_258. https://doi.org/10.1594/PANGAEA.184967
  32. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_259. https://doi.org/10.1594/PANGAEA.184968
  33. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_260. https://doi.org/10.1594/PANGAEA.184969
  34. Denis, M; Martin, V; Momzikoff, A et al. (2003): ETS activity of oxygen at station DYNAPROC_263. https://doi.org/10.1594/PANGAEA.185048
  35. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_269. https://doi.org/10.1594/PANGAEA.184970
  36. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_270. https://doi.org/10.1594/PANGAEA.184971
  37. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_273. https://doi.org/10.1594/PANGAEA.184972
  38. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_275. https://doi.org/10.1594/PANGAEA.184973
  39. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_276. https://doi.org/10.1594/PANGAEA.184974
  40. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_278. https://doi.org/10.1594/PANGAEA.184975
  41. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_279. https://doi.org/10.1594/PANGAEA.184976
  42. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_281. https://doi.org/10.1594/PANGAEA.184978
  43. Denis, M; Martin, V; Momzikoff, A et al. (2003): Abundance of phytoplankton at station DYNAPROC_283. https://doi.org/10.1594/PANGAEA.184979
  44. Denis, M; Martin, V; Momzikoff, A et al. (2003): Amino acid-containing colloids (AACC) at station DYNAPROC_CYCLE1. https://doi.org/10.1594/PANGAEA.185035
  45. Denis, M; Martin, V; Momzikoff, A et al. (2003): Amino acid-containing colloids (AACC) at station DYNAPROC_CYCLE2. https://doi.org/10.1594/PANGAEA.185036