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Assmy, Philipp; Henjes, Joachim; Klaas, Christine; Smetacek, Victor (2007): Diatom abundance counted on water bottle samples from the EisenEx cruise to the Southern Ocean [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.552191, Supplement to: Assmy, P et al. (2007): Mechanisms determining species dominance in a phytoplankton bloom induced by the iron fertilization experiment EisenEx in the Southern Ocean. Deep Sea Research Part I: Oceanographic Research Papers, 54(3), 340-362, https://doi.org/10.1016/j.dsr.2006.12.005

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Abstract:
The dynamics of phytoplankton species populations recorded during the 3-week, iron-fertilization experiment EisenEx carried out in spring in the Antarctic Polar Frontal Zone are presented and discussed as the difference between growth and mortality rates. Only two cosmopolitan diatom species, the centric Chaetoceros debilis and the pennate Pseudo-nitzschia lineola, increased population density exponentially throughout the experiment to 150-fold and 90-fold of initial values respectively. Because C. debilis initial abundance was tenfold lower than that of P. lineola, the two contributed 1 % and 21 % to bloom biomass respectively at the end of the experiment, high-lighting the role of seeding in bloom formation. The other significant species increased population size at a linear rate throughout the experiment or for a short spurt phase to 3 to 18-fold of initial values. Conservative estimates of mortality rates within diatom species populations were obtained by comparing net accumulation rates of full cells with those of empty and broken frustules. The ratios were consistent over time for the various species but varied widely between them. The species-specific variation can be explained by differences in both growth and mortality rates, the latter partly due to either selective grazing or avoidance by the large protozoo- and metazooplankton populations present. Selective predation by the abundant copepod populations on protistan grazers (ciliates and heterotrophic dinoflagellates) of diatoms apparently aided diatom biomass build-up. The response patterns of populations of the phytoplankton species present fall into 6 categories comprising disparate species, indicating that phylogeny is a poor predictor of ecology. The group that did not respond to fertilization was the most diverse and included both endemic and cosmopolitan as well as background and bloom-forming species. This lack of response to the advent of favorable growth conditions indicates that proximate factors during EisenEx triggered growth only in some species but had little effect on others. We attribute the differences in behavior to ultimate factors such as seasonal effects on life cycles and other internal constraints on growth rates. The implications for our understanding of the evolutionary ecology of phytoplankton and its impact on global biogeochemical cycles are pointed out.
Coverage:
Median Latitude: -48.076825 * Median Longitude: 20.929544 * South-bound Latitude: -48.593000 * West-bound Longitude: 20.647333 * North-bound Latitude: -47.668167 * East-bound Longitude: 21.168667
Date/Time Start: 2000-11-06T23:25:00 * Date/Time End: 2000-11-29T15:33:00
Event(s):
PS58/009-2 (CTD9) * Latitude: -47.821000 * Longitude: 20.750000 * Date/Time: 2000-11-06T23:25:00 * Elevation: -4852.0 m * Location: South Atlantic Ocean * Campaign: ANT-XVIII/2 (PS58 EISENEX) * Basis: Polarstern * Method/Device: CTD/Rosette (CTD-RO) * Comment: max gear depth: 269 m; day: T-2
PS58/011-3 * Latitude: -47.878000 * Longitude: 20.948667 * Date/Time: 2000-11-08T20:55:00 * Elevation: -4498.0 m * Location: South Atlantic Ocean * Campaign: ANT-XVIII/2 (PS58 EISENEX) * Basis: Polarstern * Method/Device: CTD/Rosette (CTD-RO) * Comment: max gear depth: 502 m; in patch 1; in/out patch: In; day: T0
PS58/012-5 (CTD16) * Latitude: -48.104833 * Longitude: 20.862333 * Date/Time: 2000-11-09T13:01:00 * Elevation: -4570.0 m * Location: South Atlantic Ocean * Campaign: ANT-XVIII/2 (PS58 EISENEX) * Basis: Polarstern * Method/Device: CTD/Rosette (CTD-RO) * Comment: max gear depth: 500 m; out patch 1; in/out patch: Out; day: T1
Size:
95 datasets

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Datasets listed in this publication series

  1. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of broken diatom frustules measured on water bottle samples at station PS58/009-2. https://doi.org/10.1594/PANGAEA.323739
  2. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom abundance measured on water bottle samples at station PS58/009-2. https://doi.org/10.1594/PANGAEA.323456
  3. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom biomass as carbon measured on water bottle samples at station PS58/009-2. https://doi.org/10.1594/PANGAEA.323711
  4. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of empty diatom frustules measured on water bottle samples at station PS58/009-2. https://doi.org/10.1594/PANGAEA.323773
  5. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of non-diatom phytoplankton measured on water bottle samples at station PS58/009-2. https://doi.org/10.1594/PANGAEA.323792
  6. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of broken diatom frustules measured on water bottle samples at station PS58/011-3. https://doi.org/10.1594/PANGAEA.323740
  7. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom abundance measured on water bottle samples at station PS58/011-3. https://doi.org/10.1594/PANGAEA.323665
  8. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom biomass as carbon measured on water bottle samples at station PS58/011-3. https://doi.org/10.1594/PANGAEA.323696
  9. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of empty diatom frustules measured on water bottle samples at station PS58/011-3. https://doi.org/10.1594/PANGAEA.323774
  10. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of non-diatom phytoplankton measured on water bottle samples at station PS58/011-3. https://doi.org/10.1594/PANGAEA.323793
  11. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of broken diatom frustules measured on water bottle samples at station PS58/012-5. https://doi.org/10.1594/PANGAEA.323741
  12. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom abundance measured on water bottle samples at station PS58/012-5. https://doi.org/10.1594/PANGAEA.323664
  13. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom biomass as carbon measured on water bottle samples at station PS58/012-5. https://doi.org/10.1594/PANGAEA.323697
  14. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of empty diatom frustules measured on water bottle samples at station PS58/012-5. https://doi.org/10.1594/PANGAEA.323775
  15. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of non-diatom phytoplankton measured on water bottle samples at station PS58/012-5. https://doi.org/10.1594/PANGAEA.323794
  16. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of broken diatom frustules measured on water bottle samples at station PS58/014-4. https://doi.org/10.1594/PANGAEA.323742
  17. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom abundance measured on water bottle samples at station PS58/014-4. https://doi.org/10.1594/PANGAEA.323663
  18. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom biomass as carbon measured on water bottle samples at station PS58/014-4. https://doi.org/10.1594/PANGAEA.323698
  19. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of empty diatom frustules measured on water bottle samples at station PS58/014-4. https://doi.org/10.1594/PANGAEA.323776
  20. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of non-diatom phytoplankton measured on water bottle samples at station PS58/014-4. https://doi.org/10.1594/PANGAEA.323795
  21. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of broken diatom frustules measured on water bottle samples at station PS58/038-3. https://doi.org/10.1594/PANGAEA.323743
  22. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom abundance measured on water bottle samples at station PS58/038-3. https://doi.org/10.1594/PANGAEA.323662
  23. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom biomass as carbon measured on water bottle samples at station PS58/038-3. https://doi.org/10.1594/PANGAEA.323699
  24. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of empty diatom frustules measured on water bottle samples at station PS58/038-3. https://doi.org/10.1594/PANGAEA.323777
  25. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of non-diatom phytoplankton measured on water bottle samples at station PS58/038-3. https://doi.org/10.1594/PANGAEA.323796
  26. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of broken diatom frustules measured on water bottle samples at station PS58/041-2. https://doi.org/10.1594/PANGAEA.323744
  27. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom abundance measured on water bottle samples at station PS58/041-2. https://doi.org/10.1594/PANGAEA.323661
  28. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom biomass as carbon measured on water bottle samples at station PS58/041-2. https://doi.org/10.1594/PANGAEA.323701
  29. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of empty diatom frustules measured on water bottle samples at station PS58/041-2. https://doi.org/10.1594/PANGAEA.323778
  30. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of non-diatom phytoplankton measured on water bottle samples at station PS58/041-2. https://doi.org/10.1594/PANGAEA.323797
  31. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of broken diatom frustules measured on water bottle samples at station PS58/042-2. https://doi.org/10.1594/PANGAEA.323745
  32. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom abundance measured on water bottle samples at station PS58/042-2. https://doi.org/10.1594/PANGAEA.323659
  33. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom biomass as carbon measured on water bottle samples at station PS58/042-2. https://doi.org/10.1594/PANGAEA.323702
  34. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of empty diatom frustules measured on water bottle samples at station PS58/042-2. https://doi.org/10.1594/PANGAEA.323779
  35. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of non-diatom phytoplankton measured on water bottle samples at station PS58/042-2. https://doi.org/10.1594/PANGAEA.323798
  36. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of broken diatom frustules measured on water bottle samples at station PS58/043-2. https://doi.org/10.1594/PANGAEA.323746
  37. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom abundance measured on water bottle samples at station PS58/043-2. https://doi.org/10.1594/PANGAEA.323672
  38. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom biomass as carbon measured on water bottle samples at station PS58/043-2. https://doi.org/10.1594/PANGAEA.323703
  39. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of empty diatom frustules measured on water bottle samples at station PS58/043-2. https://doi.org/10.1594/PANGAEA.323780
  40. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of non-diatom phytoplankton measured on water bottle samples at station PS58/043-2. https://doi.org/10.1594/PANGAEA.323799
  41. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of broken diatom frustules measured on water bottle samples at station PS58/045-2. https://doi.org/10.1594/PANGAEA.323747
  42. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom abundance measured on water bottle samples at station PS58/045-2. https://doi.org/10.1594/PANGAEA.323658
  43. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom biomass as carbon measured on water bottle samples at station PS58/045-2. https://doi.org/10.1594/PANGAEA.323704
  44. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of empty diatom frustules measured on water bottle samples at station PS58/045-2. https://doi.org/10.1594/PANGAEA.323781
  45. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of non-diatom phytoplankton measured on water bottle samples at station PS58/045-2. https://doi.org/10.1594/PANGAEA.323800
  46. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of broken diatom frustules measured on water bottle samples at station PS58/046-3. https://doi.org/10.1594/PANGAEA.323748
  47. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom abundance measured on water bottle samples at station PS58/046-3. https://doi.org/10.1594/PANGAEA.323657
  48. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom biomass as carbon measured on water bottle samples at station PS58/046-3. https://doi.org/10.1594/PANGAEA.323705
  49. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of empty diatom frustules measured on water bottle samples at station PS58/046-3. https://doi.org/10.1594/PANGAEA.323782
  50. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of non-diatom phytoplankton measured on water bottle samples at station PS58/046-3. https://doi.org/10.1594/PANGAEA.323801
  51. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of broken diatom frustules measured on water bottle samples at station PS58/048-3. https://doi.org/10.1594/PANGAEA.323749
  52. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom abundance measured on water bottle samples at station PS58/048-3. https://doi.org/10.1594/PANGAEA.323656
  53. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom biomass as carbon measured on water bottle samples at station PS58/048-3. https://doi.org/10.1594/PANGAEA.323706
  54. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of empty diatom frustules measured on water bottle samples at station PS58/048-3. https://doi.org/10.1594/PANGAEA.323783
  55. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of non-diatom phytoplankton measured on water bottle samples at station PS58/048-3. https://doi.org/10.1594/PANGAEA.323802
  56. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of broken diatom frustules measured on water bottle samples at station PS58/049-3. https://doi.org/10.1594/PANGAEA.323750
  57. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom abundance measured on water bottle samples at station PS58/049-3. https://doi.org/10.1594/PANGAEA.323655
  58. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom biomass as carbon measured on water bottle samples at station PS58/049-3. https://doi.org/10.1594/PANGAEA.323707
  59. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of empty diatom frustules measured on water bottle samples at station PS58/049-3. https://doi.org/10.1594/PANGAEA.323784
  60. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of non-diatom phytoplankton measured on water bottle samples at station PS58/049-3. https://doi.org/10.1594/PANGAEA.323803
  61. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of broken diatom frustules measured on water bottle samples at station PS58/061-3. https://doi.org/10.1594/PANGAEA.323751
  62. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom abundance measured on water bottle samples at station PS58/061-3. https://doi.org/10.1594/PANGAEA.323654
  63. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom biomass as carbon measured on water bottle samples at station PS58/061-3. https://doi.org/10.1594/PANGAEA.323708
  64. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of empty diatom frustules measured on water bottle samples at station PS58/061-3. https://doi.org/10.1594/PANGAEA.323785
  65. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of non-diatom phytoplankton measured on water bottle samples at station PS58/061-3. https://doi.org/10.1594/PANGAEA.323804
  66. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of broken diatom frustules measured on water bottle samples at station PS58/088-4. https://doi.org/10.1594/PANGAEA.323752
  67. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom abundance measured on water bottle samples at station PS58/088-4. https://doi.org/10.1594/PANGAEA.323653
  68. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom biomass as carbon measured on water bottle samples at station PS58/088-4. https://doi.org/10.1594/PANGAEA.323709
  69. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of empty diatom frustules measured on water bottle samples at station PS58/088-4. https://doi.org/10.1594/PANGAEA.323786
  70. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of non-diatom phytoplankton measured on water bottle samples at station PS58/088-4. https://doi.org/10.1594/PANGAEA.323805
  71. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of broken diatom frustules measured on water bottle samples at station PS58/090-4. https://doi.org/10.1594/PANGAEA.323753
  72. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom abundance measured on water bottle samples at station PS58/090-4. https://doi.org/10.1594/PANGAEA.323652
  73. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom biomass as carbon measured on water bottle samples at station PS58/090-4. https://doi.org/10.1594/PANGAEA.323712
  74. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of empty diatom frustules measured on water bottle samples at station PS58/090-4. https://doi.org/10.1594/PANGAEA.323787
  75. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of non-diatom phytoplankton measured on water bottle samples at station PS58/090-4. https://doi.org/10.1594/PANGAEA.323806
  76. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of broken diatom frustules measured on water bottle samples at station PS58/091-4. https://doi.org/10.1594/PANGAEA.323754
  77. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom abundance measured on water bottle samples at station PS58/091-4. https://doi.org/10.1594/PANGAEA.323668
  78. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom biomass as carbon measured on water bottle samples at station PS58/091-4. https://doi.org/10.1594/PANGAEA.323713
  79. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of empty diatom frustules measured on water bottle samples at station PS58/091-4. https://doi.org/10.1594/PANGAEA.323788
  80. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of non-diatom phytoplankton measured on water bottle samples at station PS58/091-4. https://doi.org/10.1594/PANGAEA.323807
  81. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of broken diatom frustules measured on water bottle samples at station PS58/092-3. https://doi.org/10.1594/PANGAEA.323755
  82. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom abundance measured on water bottle samples at station PS58/092-3. https://doi.org/10.1594/PANGAEA.323651
  83. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom biomass as carbon measured on water bottle samples at station PS58/092-3. https://doi.org/10.1594/PANGAEA.323714
  84. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of empty diatom frustules measured on water bottle samples at station PS58/092-3. https://doi.org/10.1594/PANGAEA.323789
  85. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of non-diatom phytoplankton measured on water bottle samples at station PS58/092-3. https://doi.org/10.1594/PANGAEA.323808
  86. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of broken diatom frustules measured on water bottle samples at station PS58/107-5. https://doi.org/10.1594/PANGAEA.323756
  87. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom abundance measured on water bottle samples at station PS58/107-5. https://doi.org/10.1594/PANGAEA.323650
  88. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom biomass as carbon measured on water bottle samples at station PS58/107-5. https://doi.org/10.1594/PANGAEA.323693
  89. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of empty diatom frustules measured on water bottle samples at station PS58/107-5. https://doi.org/10.1594/PANGAEA.323790
  90. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of non-diatom phytoplankton measured on water bottle samples at station PS58/107-5. https://doi.org/10.1594/PANGAEA.323809
  91. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of broken diatom frustules measured on water bottle samples at station PS58/108-1. https://doi.org/10.1594/PANGAEA.323757
  92. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom abundance measured on water bottle samples at station PS58/108-1. https://doi.org/10.1594/PANGAEA.323649
  93. Assmy, P; Henjes, J; Klaas, C et al. (2007): Diatom biomass as carbon measured on water bottle samples at station PS58/108-1. https://doi.org/10.1594/PANGAEA.323695
  94. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of empty diatom frustules measured on water bottle samples at station PS58/108-1. https://doi.org/10.1594/PANGAEA.323791
  95. Assmy, P; Henjes, J; Klaas, C et al. (2007): Abundance of non-diatom phytoplankton measured on water bottle samples at station PS58/108-1. https://doi.org/10.1594/PANGAEA.323810