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Destructive Effects of Oxygen Starvation and Ash Falls on Benthic Life: A Pilot Study1

Published online by Cambridge University Press:  20 January 2017

Abstract

A quantitative study on faunal density and faunal diversity was carried out on benthic foraminifers from 15 samples of two eastern Mediterranean deep-sea cores. Samples were taken beneath, within, and above three distinctive levels well correlatable for over 1000 km: (a) Sapropel S-5, late Pleistocene in age, correlative with marine isotopic stage 5e and with the Tyrrhenian transgression, with an interpolated age of ∼ 125,000 yr: (b) the “Ischia” tephra Y-5, the most widespread ash layer of the eastern Mediterranean, correlative with the transition from isotopic stages 3 to 2 and having an interpolated age of ∼ 35,000 yr; and (c) Sapropel S-1, Holocene in age, correlative with the Flandrian transgression, radiometrically dated at ∼8000 yr B.P. The most severe effects on benthic life were induced by stagnation (a). Deglaciation corresponding to Termination II was so rapid that the benthic assemblages could not adapt themselves to the too-rapidly decreasing oxygen levels and were entirely destroyed. More than 1000 yr after the termination of stagnant conditions no recolonization had yet started. The lesser disturbance was induced in the benthic community by the ash fall (b). The faunal destruction was ephemeral in duration and the colonizing population did not differ from that predating the ash fall. A progressive faunal change, with increasing abundance of taxa tolerant to low oxygen levels, was recorded beneath Sapropel S-1 (c). The recolonizing assemblage differs from the previously existing one, and is more similar to those recorded from the floor of the Mediterranean.

Type
Research Article
Copyright
University of Washington

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Footnotes

1

The present paper was presented at the Tenth Congress of the International Association of Sedimentology in Jerusalem, Israel, in July, 1978 under Theme 6 “Bioactivity and Biological Constituents in Sediments” following the invitation of the Converner Z. Reiss.

References

Blanc, J. Froget, C., (1967). Recherches de Géologie Marine et Sédimentologie; Campagne de la Calypso en Méditerranée orientale, Quatrième Mission. Ann. Inst. Océan. 45 257 292 (1964) Google Scholar
Boltovskoy, E. Wright, R.H., (1976). Recent Foraminifera Junk The Hague 1 515 Google Scholar
Bonadonna, F.P. Bigazzi, G., (1970). Datazione di tufi intratirreniani della zona di Cerveteri (Roma) mediante il metodo delle tracce di fissione. Boll. Soc. Geol. Ital. 89 463 473 Google Scholar
Broecker, W.S. van Donk, J., (1970). Insolation changes, ice volumes and the O18 record in deep-sea cores. Rev. Geophys. Space Phys. 8 1 169 199 Google Scholar
Cita, M.B., (1973). Inventory of biostratigraphic findings and problems. Int. Reports of the Deep Sea Drilling Project 13 2 1045 1054 Google Scholar
Cita, M.B. Ciampo, G. Chierici, M.A. Moncharmont Zei, M. d'Onofrio, S. Ryan, W.B.F. Scorziello, R., (1973). The Quaternary Record of the Tyrrhenian and Ionian basins of the Mediterranean. Init. Reports of the Deep Sea Drilling Project 13 2 1263 1339 Google Scholar
Cita, M.B. Ryan, W.B.F., (1978). The deep-sea record of the eastern Mediterranean in the last 150,000 years. Acta. 2nd International Scientific Congress, Thera and the Aegean World. 45 60 Google Scholar
Cita, M.B. Ryan, W.B.F. Kidd, R.B., (1978). Sedimentation Rates in the Mediterranean Neogene Deep-sea Record. Geodynamic Significance of their Changes. Init. Reports of the Deep Sea Drilling Project 42A 991 1002 Google Scholar
Cita, M.B. Vergnaud-Grazzini, C. Robert, C. Chamley, H. Ciaranfi, N. d'Onofrio, S., (1977). Paleoclimatic Record of a Long Deep Sea Core from the Eastern Mediterranean. Quaternary Research 8 205 235 CrossRefGoogle Scholar
Cita, M.B. Zocchi, M., (1978). Distribution patterns of benthic foraminifera on the floor of the Mediterranean Sea. Oceanologica Acta 1 4 445 462 Google Scholar
Clifton, H.E. Hunter, R.E., (1973). Bioturbation rates and effects on carbonate sand, St. John, U.S. Virgin Islands. Journal of Geology 81 253 268 Google Scholar
Cullen, D.J., (1973). Bioturbation of Superficial Marine Sediments by Interstitial Meiobenthos. Nature (London) 242 323 324 CrossRefGoogle Scholar
Dominik, J. Mangini, A., (1978). Mediterranean Ridge: Climatic control of the sedimentation rate from results of the Io method. Tenth International Congress on Sedimentology. Abstracts 1 181 182 Google Scholar
Friedrich, W.L. Pichler, H. Kussmaul, S., (1977). Quaternary piroclastics from Santorini/Greece and their significance for the Mediterranean paleoclimate. Bulletin of the Geological Society of Denmark 26 27 39 CrossRefGoogle Scholar
Grassle, F., (1977). Slow recolonization of deep sea sediments. Nature (London) 265 618 619 CrossRefGoogle Scholar
Hessler, R. Jumars, P.A., (1977). Abyssal communities and radioactive waste disposal. Oceanus 20 1 41 46 Google Scholar
Hsü, K.J., (1978). Stratigraphy of the lacustrine sedimentation in the Black Sea. Initial Reports of the Deep Sea Drilling Project 47B 509 526 Google Scholar
Keller, J. Ryan, W.B.F. Ninkovich, D. Altherr, R., (1978). 200,000 years of Mediterranean volcanic activity as recorded in deep-sea sediments. Geological Society of America Bulletin 89 591 604 2.0.CO;2>CrossRefGoogle Scholar
Kidd, R.B. Cita, M.B. Ryan, W.B.F., (1978). The stratigraphy of Eastern Mediterranean sapropel sequences recovered by DSDP Leg 42 A and their paleoenvironmental significance. Initial Reports of the Deep Sea Drilling Project 42A 421 443 Google Scholar
Luz, B. Bernstein, M., (1977). Planktonic foraminifera and quantitative micropaleontology of the Eastern Mediterranean. Marine Micropaleontology 1 4 307 324 Google Scholar
Maldonado, A. Stanley, D.J., (1977). Late Quaternary sedimentation and stratigraphy in the Strait of Sicily. Smithsonian Contrib. Earth Sciences 16 1 73 Google Scholar
Mangini, A. Dominik, J., (1978). An evaluation of the Uranium budget of Mediterranean Ridge sapropels. Tenth International Congress on Sedimentology, Abstracts 2 411 412 Google Scholar
Margalef, R., (1958). Information theory in ecology. Gen. Syst. 3 36 71 Google Scholar
Massiotta, P. Cita, M.B. Mancuso, M., (1976). Benthonic foraminifers from bathyal depths in the eastern Mediterranean. Maritime Sediments Special Publications 1 251 262 Google Scholar
McCoy, F.W., (1974). Late Quaternary sedimentation in the eastern Mediterranean Sea. Unpublished Ph.D. dissertation Harvard University Cambridge, Mass Google Scholar
McCoy, F. W. (in press). Volcanic ash stratigraphy in Late Quaternary deep-sea sediments of the eastern Mediterranean.. Marine Geolog.. Google Scholar
Ninkovich, D. Heezen, B.C., (1965). Santorini Tephra. Whittard, W.F. Bradshaw, R. Submarine Geology and Geophysics. 413 453 Google Scholar
Olausson, E., (1961). Studies of deep-sea cores. Reports of the Swedish Deep-sea Expedition 1947–1948 8 4 323 438 Google Scholar
Parker, F.L., (1958). Eastern Mediterranean Foraminifers. Reports of the Swedish Deep-sea Expedition 1947–1948 8 4 217 283 Google Scholar
Paul, A.Z. Thorndik, E.M. Sullivan, L.G. Heezen, B.C. Gerard, R.D., (1978). Observations of the deep sea floor from 202 days of timelapse photography. Nature (London) 272 812 814 CrossRefGoogle Scholar
Rice, A.L., (1978). Radio-active waste disposal and deep-sea biology. Oceanologica Acta 1 4 483 491 Google Scholar
Ross, D. Neprochov, Y.P., (1978). Initial Reports of the Deep Sea Drilling Project Vol. 42B U.S. Government Printing Office Washington, D.C 1 1244 Google Scholar
Ruddiman, W.F. McIntyre, A., (1976). Paleoceanography of the Quaternary North atlantic. Geological Society of America Memoir 145 111 146 Google Scholar
Ryan, W.B.F., (1972). Stratigraphy of Late Quaternary Sediments in the eastern Mediterranean. Stanley, D.J. The Mediterranean Sea. Dowden, Hutchinson and Ross 149 170 Google Scholar
Ryan, W.B.F. Cita, M.B., (1977). Ignorance concerning episodes of ocean-wide stagnation. Marine Geology 23 197 215 Google Scholar
Ryan, W.B.F. Heezen, B.C., (1976). Smothering of Deep-Sea Benthic Communities from Natural Disasters Lamont-Doherty Geological Observatory of Columbia University 1 132 Technical Report Google Scholar
Thunnell, R.C. Williams, D.F. Kennett, J.P., (1977). Late Quaternary paleoclimatology, stratigraphy and sapropel history in eastern Mediterranean deep-sea sediments. Marine Micropaleontology 2 3 271 388 CrossRefGoogle Scholar
Turekian, K.K. Cochran, J.K. DeMaster, D.J., (1978). Bioturbation in deep-sea deposits: Rates and consequences. Oceanus 21 1 35 41 Google Scholar
Van Straaten, L.M.J.V., (1972). Holocene Stage of Oxygen Depletion in Deep Waters of the Adriatic Sea. Stanley, D.J. The Mediterranean Sea. Dowden, Hutchinson and Ross 631 644 Google Scholar
Venkatarathnam, K. Ryan, W.B.F., (1971). Dispersal pattern of clay minerals in the sediments of the eastern Mediterranean sea. Marine Geology 11 4 261 282 Google Scholar
Vergnaud-Grazzini, C. Ryan, W.B.F. Cita, M.B., (1977). Stable isotopic fractionation, climate change and episodic stagnation in the eastern Mediterranean during the Late Quaternary. Marine Micropaleontology 2 3 353 370 CrossRefGoogle Scholar
Williams, D.F. Thunnell, R.C. Kennett, J.P., (1978). Periodic fresh-water flooding and stagnation of the eastern Mediterranean Sea during the late Quaternary. Science 201 252 254 Google Scholar
Woillard, G.M., (1978). Grande Pile peat-bog: A continuous pollen record for the last 140,000 years. Quaternary Research 9 1 21 CrossRefGoogle Scholar