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Schiebel, Ralf; Hemleben, Christoph (2000): Planktic foraminiferal populations and test flux in the eastern North Atlantic Ocean. PANGAEA, https://doi.org/10.1594/PANGAEA.728676, Supplement to: Schiebel, R; Hemleben, C (2000): Interannual variability of planktic foraminiferal populations and test flux in the eastern North Atlantic Ocean (JGOFS). Deep Sea Research Part II: Topical Studies in Oceanography, 47(9-11), 1809-1852, https://doi.org/10.1016/S0967-0645(00)00008-4

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Abstract:
Planktic foraminiferal assemblages vary in response to seasonal fluctuations of hydrographic properties, between water masses, and after periodical changes and episodic events (e.g. reproduction, storms). Distinct annual variability of the planktic foraminiferal flux is also known from sediment trap data. In this paper we discuss the short-term impacts on interannual flux rates based on data from opening-closing net hauls obtained between the ocean surface and 500 m water depth. Data were recorded during April, May, June, and August at around 47°N, 20°W (BIOTRANS) in 1988, 1989, 1990, 1992, 1993, and during May 1989 and 1992 at 57°N, 20-22°W. Species assemblages closely resemble each other when comparing the mixed layer fauna with the fauna of the upper 100 m and the upper 500 m of the water column. In addition, species assemblages >100 µm are almost indistinguishable from assemblages that are >125 µm in test size. The standing stock of planktic foraminifers at BIOTRANS can vary by more than one order of magnitude over different years; however, species assemblages may be similar when comparing corresponding seasons. Early summer assemblages (June) are distinctly different from late summer assemblages (August). Significant variations in the species composition during spring (April/May) are independent of the mixed layer depth. Spring assemblages are characterized by high numbers of Globigerinita glutinata. In particular, day-to-day variations of the number of specimens and in species composition may have the same order of magnitude as interannual variations. This appears to be independent of the reproduction cycle. Species assemblages at 47°N and 57°N are similar during spring, although surface water temperatures and salinities differ by up to 10°C and 0.7 (PSU). We suggest that the main factors controlling the planktic foraminiferal fauna are the trophic properties in the upper ocean productive layer.
Planktic foraminiferal carbonate flux as calculated from assemblages reveals large seasonal variations, a quasi-annual periodicity in flux levels, and substantial differences in timing and magnitude of peak fluxes. At the BIOTRANS station, the average annual planktic foraminiferal CaCO3 fluxes at 100 and 500 m depth are estimated to be 22.4 and 10.0 g/m**2/yr, respectively.
Project(s):
Paleoceanography at Tübingen University (GeoTü)
Coverage:
Median Latitude: 45.928970 * Median Longitude: -19.431226 * South-bound Latitude: 33.939867 * West-bound Longitude: -22.304000 * North-bound Latitude: 57.995833 * East-bound Longitude: -17.757050
Date/Time Start: 1988-04-08T09:40:00 * Date/Time End: 1993-06-16T08:56:00
Event(s):
FCA97C_MSN1339 (45) * Latitude: 32.661667 * Longitude: -30.585000 * Date/Time: 1997-08-01T16:40:00 * Elevation: -3225.0 m * Location: Azores front * Campaign: FCA97 * Basis: Arquipelago * Device: Multiple opening/closing net (MSN)
FCA97C_MSN1340 (45) * Latitude: 32.662250 * Longitude: -30.587889 * Date/Time: 1997-08-01T17:55:00 * Elevation: -3225.0 m * Location: Azores front * Campaign: FCA97 * Basis: Arquipelago * Device: Multiple opening/closing net (MSN)
FCA97C_MSN1343 (52) * Latitude: 32.101917 * Longitude: -31.664778 * Date/Time: 1997-08-02T19:35:00 * Elevation: -4134.0 m * Location: Azores front * Campaign: FCA97 * Basis: Arquipelago * Device: Multiple opening/closing net (MSN)
Size:
153 datasets

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Datasets listed in this Collection

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  1. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M12/3_MSN533. https://doi.org/10.1594/PANGAEA.75620
  2. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M12/3_MSN535. https://doi.org/10.1594/PANGAEA.75621
  3. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M12/3_MSN536. https://doi.org/10.1594/PANGAEA.75622
  4. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M12/3_MSN538. https://doi.org/10.1594/PANGAEA.75623
  5. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M12/3_MSN541. https://doi.org/10.1594/PANGAEA.75624
  6. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M12/3_MSN543. https://doi.org/10.1594/PANGAEA.75625
  7. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M12/3_MSN545. https://doi.org/10.1594/PANGAEA.75626
  8. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M12/3_MSN547. https://doi.org/10.1594/PANGAEA.75627
  9. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M12/3_MSN557. https://doi.org/10.1594/PANGAEA.75628
  10. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M12/3_MSN558. https://doi.org/10.1594/PANGAEA.75629
  11. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M12/3_MSN559. https://doi.org/10.1594/PANGAEA.75630
  12. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M12/3_MSN560. https://doi.org/10.1594/PANGAEA.75631
  13. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M12/3_MSN561. https://doi.org/10.1594/PANGAEA.75632
  14. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M12/3_MSN562. https://doi.org/10.1594/PANGAEA.75633
  15. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/1_MSN603. https://doi.org/10.1594/PANGAEA.75690
  16. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/1_MSN604. https://doi.org/10.1594/PANGAEA.75691
  17. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/1_MSN605. https://doi.org/10.1594/PANGAEA.75692
  18. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/1_MSN606. https://doi.org/10.1594/PANGAEA.75693
  19. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/1_MSN607. https://doi.org/10.1594/PANGAEA.75694
  20. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/1_MSN608. https://doi.org/10.1594/PANGAEA.75696
  21. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/1_MSN609. https://doi.org/10.1594/PANGAEA.75697
  22. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/1_MSN610. https://doi.org/10.1594/PANGAEA.75698
  23. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/1_MSN611. https://doi.org/10.1594/PANGAEA.75699
  24. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/1_MSN613. https://doi.org/10.1594/PANGAEA.75700
  25. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/1_MSN614. https://doi.org/10.1594/PANGAEA.75701
  26. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/1_MSN615. https://doi.org/10.1594/PANGAEA.75702
  27. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/1_MSN619. https://doi.org/10.1594/PANGAEA.75703
  28. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/1_MSN620. https://doi.org/10.1594/PANGAEA.75704
  29. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/2_MSN624. https://doi.org/10.1594/PANGAEA.75871
  30. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/2_MSN627. https://doi.org/10.1594/PANGAEA.75872
  31. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/2_MSN628. https://doi.org/10.1594/PANGAEA.75873
  32. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/2_MSN629. https://doi.org/10.1594/PANGAEA.75874
  33. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/2_MSN638. https://doi.org/10.1594/PANGAEA.75875
  34. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/2_MSN639. https://doi.org/10.1594/PANGAEA.75876
  35. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/2_MSN640. https://doi.org/10.1594/PANGAEA.75877
  36. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/2_MSN641. https://doi.org/10.1594/PANGAEA.75878
  37. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/2_MSN642. https://doi.org/10.1594/PANGAEA.75879
  38. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/2_MSN643. https://doi.org/10.1594/PANGAEA.75880
  39. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/2_MSN644. https://doi.org/10.1594/PANGAEA.75881
  40. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/2_MSN647. https://doi.org/10.1594/PANGAEA.75882
  41. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/2_MSN648. https://doi.org/10.1594/PANGAEA.75883
  42. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/2_MSN649. https://doi.org/10.1594/PANGAEA.75884
  43. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/2_MSN650. https://doi.org/10.1594/PANGAEA.75885
  44. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/2_MSN651. https://doi.org/10.1594/PANGAEA.75886
  45. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/2_MSN652. https://doi.org/10.1594/PANGAEA.75887
  46. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/2_MSN656. https://doi.org/10.1594/PANGAEA.75888
  47. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/2_MSN657. https://doi.org/10.1594/PANGAEA.75889
  48. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet M21/2_MSN658. https://doi.org/10.1594/PANGAEA.75890
  49. Schiebel, R; Hemleben, C (2000): Plasm bearing foraminifera counts of multinet POS200/6_MSN837. https://doi.org/10.1594/PANGAEA.75912
  50. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M10/2_MSN218. https://doi.org/10.1594/PANGAEA.75427
  51. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M10/2_MSN219. https://doi.org/10.1594/PANGAEA.75428
  52. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M10/2_MSN229. https://doi.org/10.1594/PANGAEA.75429
  53. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M10/2_MSN231. https://doi.org/10.1594/PANGAEA.75430
  54. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M10/2_MSN232. https://doi.org/10.1594/PANGAEA.75431
  55. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M10/2_MSN234. https://doi.org/10.1594/PANGAEA.75432
  56. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M10/2_MSN238. https://doi.org/10.1594/PANGAEA.75433
  57. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M10/2_MSN251. https://doi.org/10.1594/PANGAEA.75434
  58. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M10/2_MSN261. https://doi.org/10.1594/PANGAEA.75435
  59. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M10/2_MSN262. https://doi.org/10.1594/PANGAEA.75436
  60. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M10/2_MSN265. https://doi.org/10.1594/PANGAEA.75437
  61. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M10/2_MSN268. https://doi.org/10.1594/PANGAEA.75438
  62. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M10/2_MSN284. https://doi.org/10.1594/PANGAEA.75440
  63. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M10/2_MSN295. https://doi.org/10.1594/PANGAEA.75441
  64. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M10/2_MSN297. https://doi.org/10.1594/PANGAEA.75442
  65. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M10/2_MSN298. https://doi.org/10.1594/PANGAEA.75443
  66. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M10/2_MSN315. https://doi.org/10.1594/PANGAEA.75444
  67. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M10/2_MSN317. https://doi.org/10.1594/PANGAEA.75445
  68. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M10/2_MSN319. https://doi.org/10.1594/PANGAEA.75446
  69. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M10/2_MSN322. https://doi.org/10.1594/PANGAEA.75447
  70. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M10/2_MSN332. https://doi.org/10.1594/PANGAEA.75448
  71. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M10/2_MSN334. https://doi.org/10.1594/PANGAEA.75449
  72. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M12/3_MSN533. https://doi.org/10.1594/PANGAEA.75606
  73. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M12/3_MSN535. https://doi.org/10.1594/PANGAEA.75607
  74. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M12/3_MSN536. https://doi.org/10.1594/PANGAEA.75608
  75. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M12/3_MSN538. https://doi.org/10.1594/PANGAEA.75609
  76. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M12/3_MSN541. https://doi.org/10.1594/PANGAEA.75610
  77. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M12/3_MSN543. https://doi.org/10.1594/PANGAEA.75611
  78. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M12/3_MSN545. https://doi.org/10.1594/PANGAEA.75612
  79. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M12/3_MSN547. https://doi.org/10.1594/PANGAEA.75613
  80. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M12/3_MSN557. https://doi.org/10.1594/PANGAEA.75614
  81. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M12/3_MSN558. https://doi.org/10.1594/PANGAEA.75615
  82. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M12/3_MSN559. https://doi.org/10.1594/PANGAEA.75616
  83. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M12/3_MSN560. https://doi.org/10.1594/PANGAEA.75617
  84. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M12/3_MSN561. https://doi.org/10.1594/PANGAEA.75618
  85. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M12/3_MSN562. https://doi.org/10.1594/PANGAEA.75619
  86. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M21/1_MSN603. https://doi.org/10.1594/PANGAEA.75695
  87. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M21/1_MSN604. https://doi.org/10.1594/PANGAEA.75677
  88. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M21/1_MSN605. https://doi.org/10.1594/PANGAEA.75678
  89. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M21/1_MSN606. https://doi.org/10.1594/PANGAEA.75679
  90. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M21/1_MSN607. https://doi.org/10.1594/PANGAEA.75680
  91. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M21/1_MSN608. https://doi.org/10.1594/PANGAEA.75681
  92. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M21/1_MSN609. https://doi.org/10.1594/PANGAEA.75682
  93. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M21/1_MSN610. https://doi.org/10.1594/PANGAEA.75683
  94. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M21/1_MSN611. https://doi.org/10.1594/PANGAEA.75684
  95. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M21/1_MSN613. https://doi.org/10.1594/PANGAEA.75685
  96. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M21/1_MSN614. https://doi.org/10.1594/PANGAEA.75686
  97. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M21/1_MSN615. https://doi.org/10.1594/PANGAEA.75687
  98. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M21/1_MSN619. https://doi.org/10.1594/PANGAEA.75688
  99. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M21/1_MSN620. https://doi.org/10.1594/PANGAEA.75689
  100. Schiebel, R; Hemleben, C (2000): Total foraminifera counts of multinet M21/2_MSN624. https://doi.org/10.1594/PANGAEA.75849

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