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Calibration of the Benthic Foraminiferal Oxygen Index in the Marmara Sea

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EN
Abstrakty
EN
Benthic foraminifera (total assemblages) were studied from 30 sea-floor samples collected along a bathymetric transect on the southern shelf of the Marmara Sea from depths of 15–350 m. At each station, Kaiho’s Benthic Foraminiferal Oxygen Index (BFOI) was calculated based on species abundances using the methods outlined by Kaiho (1994). The calculated BFOI values were converted to analogue oxygen values, and calibrated to the dissolved oxygen values measured 1 m above the sea floor at each station. In the surface waters and central part of the Marmara Shelf transect, the BFOI values reproduce the measured dissolved oxygen values with a remarkable degree of accuracy. Beneath the pycnocline at depths of 30 to 75 m, the BFOI underestimated the measured oxygen values. This discrepancy is attributed to seasonally higher summer oxygen values within the chlorophyll maximum, corresponding to the position of the Mediterranean Inflow Water (MIW) present during summer. In the deeper part of the transect (below 140 m), BFOI values overestimated the measured oxygen values. This discrepancy is attributed to the presence of denser MIW that cascades down the submarine canyon beneath the Marmara ship channel during winter, ventilating the deep Marmara Sea. The BFOI accurately points out the seasonal differences in the position and depth of the MIW in the southwestern Marmara Sea. The BFOI likely reflects the longer-term oxygen values averaged over the span of many years.
Rocznik
Strony
757--764
Opis fizyczny
Bibliogr. 28 poz., rys., tab.
Twórcy
  • Earth Sciences Department, King Fahd University of Petroleum and Minerals, POBox 701, Dhahran, 31261, Saudi Arabia
  • Department of Earth Sciences, University College London, Gower Street, London, WC1E 6BT, U.K.
Bibliografia
  • 1. ABU-ZIED R.H., ROHLING E.J., JORISSEN F.J., FONTANIER C., CASFORD J.S.L. and COOKE S. (2008) - Benthic foraminiferal response to changes in botfom-water oxygenation and organic carbon flux in the eastern Mediterranean during LGM to Recent times. Mar. Micropaleont., 67 (1-2): 46-68.
  • 2. AKSU A.E., CALON T. J., HISCOTT R.N. and YAŞAR D. (2000) - Anatomy of the North Anatolian Fault Zone in the Marmara Sea, western Turkey: extensional basins above a continental transform. GSA Today, 10: 3-7.
  • 3. AKSU A.E., HISCOTT R.N., KAMINSKI M.A., MUDIE P.J., GILLESPIE H., ABRAJANO T. and YAŞAR D. (2002a) - Last Glacial to Hol ocene paleoceanography of the Black Sea and Marmara Sea: Stable isotopic, foraminiferal and coccolith evidence. Mar. Geol., 190: 119-149.
  • 4. AKSU A.E., HISCOTT R.N., MUDIE P.J., ROCHON A., KAMINSKI M.A., ABRAJANO T. and YAŞAR D. (2002b) - Persistent Holocene outflow from the Black Sea to the Eastern Mediterranean contradicts Noah’s Flood Hypothesis. GSA Today, 12 (5): 4-10.
  • 5. ALAVI S.N. (1988) - Late Holocene deep-sea benthic foraminifera from the Sea of Marmara. Mar. Micropalaeont., 13: 213-237.
  • 6. ALEGRET L., MOLINA E. and THOMAS E. (2003) - Benthic foraminiferal turnover across the Cretaceous/Paleogene boundary at Agost (southeastern Spain): paleoenvironmental inferences. Mar. Micropaleont., 48: 251-279.
  • 7. AVŞAR N., AKSU A. and DINCER F. (2006) - Benthic foraminiferal assemblages of the Erdek Bay (SW Marmara Sea) (in Turkish with English summary). Yerbilimleri [Journal of the Earth Sciences Application and Research Center of Hacettepe University], 27 (3): 125-141.
  • 8. CETEAN C., BĂLC R., KAMINSKI M.A. and FILIPESCU S. (2011) - In- te grated biostratigraphy and palaeoenvironments of an upper Santonian - upper Campanian succession from the southern part of the Eastern Carpathians, Romania. Cret. Res., 32: 575-590.
  • 9. CHENDEŞ C., KAMINSKI M.A., FILIPESCU S., AKSU A.E. and YAŞAR D. (2004) - The response of modern benthic foraminiferal assemblages to water-mass properties along the southern shelf of the Marmara Sea. Acta Palaeont. Romaniae, 4: 69-80.
  • 10. CIMERMAN F. and LANGER M.R. (1991) - Mediterranean Foraminifera. Slovenska Akademija Zn anosti in Umetnosti, Ljubljana.
  • 11. DRINIA H. and ANASTASAKIS G. (2012) - Benthic foraminifer palaeo- ecology of the Late Quaternary continental outer shelf of a landlocked marine basin in cenfral Aegean Sea, Greece. Quatern. Infern., 261: 43-52.
  • 12. DRINIA H., TSAPARAS N., ANTONARAKOU A. and GOUMAS G. (2003) - Benfhic foraminiferal biofacies associated with middle to early late Miocene oxygen deficient conditions in the eastern Mediterranean. Eighth International Conference on Environmental Science and Technology, Lemnos Island, Greece, 8-10 September, 2003. Abstracts and Program.
  • 13. ERGIN M., KAZANCI N., VAROL B., ILERI O. and KARADENIZLI L. (1997) - Sea-level changes and related depositional environments on the southern Marmara shelf. Mar. Geol., 140: 391-403.
  • 14. FRONTALINI F., KAMINSKI M.A., COCCIONI R., BUCCI C. and AKSU A.E. (2011) - Paleobathymetric distribution and ecology of agglutinated foraminifera along an inner neritic to upper bathyal transect in the Marmara Sea. Grzybowski Found. Spec. Publ., 16: 37-52.
  • 15. JORISSEN F.J., FONTANIER C. and THOMAS E. (2007) - Paleoceanographical proxies based on deepsea benthic foraminiferal assemblage characteristics. In: Proxies in Late Cenozoic paleoceanography (eds. C. Hillaire-Marcel and A. de Vernal): 263-313. Elsevier.
  • 16. KAIHO K. (1991) - Global changes of Paleogene aerobic/anaerobic benthic foraminifera and deep-sea circulation. Palaeogeogr. Palaeoclimatol. Palaeoecol., 83: 65-85.
  • 17. KAIHO K. (1994) - Benfhic foraminiferal dissolved-oxygen index and dissolved-oxygen levels in the modern ocean. Geology, 22: 719-722.
  • 18. KAIHO K. (1999) - Effect of organic carbon flux and dissolved oxygen on the benthic foraminiferal oxygen index (BFOI). Mar. Micropalaeont., 37: 67-76.
  • 19. KAIHO K., FUJIWARA O. and MOTOYAMA I. (1993) - Mid-Cretaceous faunal turnover of intermediate-water benthic foraminifera in the northwestern Pacific Ocean margin. Mar. Micropaleont., 23 (1): 13-49.
  • 20. KAMINSKI M.A., AKSU A.E., BOX M., HISCOTT R.N., FILIPESCU S. and Al-SALAMEEN M. (2002) - Late Glacial to Hot ocene benthic foraminifera in the Marmara Sea: implications for Black Sea - Mediterranean Sea connections following the last deglaciation. Mar. Geol., 190: 165-202.
  • 21. MORIGI C. (2009) - Benthic environmental changes in the Eastern Mediterranean Sea during sapropel S5 deposition. Palaeogeogr. Palaeoclimatol. Palaeoecol., 273: 258-271.
  • 22. NIELSON J.N. (1912) - Hydrography of the Mediterranean and adjacent waters. In: Report on the Danish Oceanographical Expedition 1908-1910 to the Mediterranean and adjacent waters, 1: 77-191. Copenhagen.
  • 23. PARKER F.L. (1958) - Eastern Mediterranean foraminifera. Sediment cores from the Mediterranean and Red Sea. Report of the Swedish Deep Sea Expedition, 8: 219-283.
  • 24. PHIPPS M., KAMINSKI M.A. and AKSU A.E. (2010) - Calcareous benthic foraminiferal biofacies on the southern Marmara Shelf. Mi crop ale ontology, 56 (3-4): 377-392.
  • 25. RASMUSSEN T.L. (2005) - Systematic paleontology and ecology of benthic foraminifera from the Plio-Pleistocene Kallithea Bay section, Rhodes, Greece. Cushman Found. Spec. Publ., 39: 53-157.
  • 26. SGARRELLA F. and MONCHARMONT ZEI M. (1993) - Benthic foraminifera of the Gulf of Naples (Italy): Systematics and autoecology. Boll. Soc. Paleont. Ital., 32: 145-264.
  • 27. SCHMIEDL G., MITSCHELE A., BECK S., EMEIS K-C., HEMLEBEN C., SCHULZ H., SPERLING M. and WELDEAB S. (2003) - Benthic foraminiferal record of ecosystem variability in the eastern Mediterranean Sea during times of sapropel S5 and S6 deposition. Palaeogeogr. Palaeoclimatol. Palaeoecol., 190: 139-164.
  • 28. YANKO V.V. and TROITSKAYA T.S. (1987) - Late Quaternary Foraminifera of the Black Sea (in Russian). Trudy Inst. Geol. Geofiz., Akad. Nauk SSSR, Novosibirsk, 694.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-dda0cb3f-d6a5-4f6e-9e4d-ea839151ef6a
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