1. WP2 Objective # 3: Characterise the relevant fluxes and sedimentation rates in studied areas by using sediment traps Analysis of sediment trap material: the biogenic component Studied samples: 54 for total mass flux 21 for coccolith flux Elisa Malinverno CoNISMa Local Research Unit Dept. of Geological Sciences and Geotechnologies Milano-Bicocca university

2. Chl-a: yearly average

4. Circulation in the Ionian Sea: 1987-1997 Malanotte-Rizzoli et al., 1997

5. Circulation in the Ionian Sea: 1998-present Pinardi e Masetti, 2000

6. August 1998

8. Total mass flux over Bannock Basin (mg m -2 day -1 ) Nov. 1991 – Aug. 1994 (Ziveri et al., 1998)

9. Samples from sediment traps:

10. (mg · m -2 · day -1 ) Total mass flux: 1999-2001 (mg · m -2 · day -1 ) Above Urania Basin (2800 m) Above Bannock Basin (2800-2500 m) Malfunctioning No data

11. An important phytoplankton group >> they contribute to surface PP Coccolithophorids They produce coccoliths (carbonate platelets) >> they contribute to sediment formation They have specific ecological preferences >> their remains give information on past ecosystem conditions

12. Temperature Species Biogeographic provinces

13. 40-60 m 80-100 m 150-200 m R. clavigera H. arethusae F. profundaG. flabellathus M. elegans Depth range

14. Depth (cm)

15. Sediment trap: ST3 - 2800 m

16. 1,4 1,2 1 0,8 0,6 0,4 0,2 0 (# ·10 9 m -2 day -1 ) Species % ST (avg.1999-2000) BC07 top MCAT01 top BC07 sapropel

17. (Klein et al., 1999) Influence of the EMT? 1995 1987

18. (Ziveri et al., 2000)

19. Coccolith concentration (10 9 / gram) Coccolith flux (10 9 m -2 day -1 ) ST3-UB Coccolith concentration (10 9 / gram) (Ziveri et al., 2000) ST-BB