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Title

Environmental and climatic changes in the central Mediterranean Sea (Siculo-Tunisian Strait) during the last 30 ka based on dinoflagellate cyst and planktonic foraminifera assemblages

Publication Year

2010

Author(s)
  • Rouis-Zargouni, Imene
  • Turon, Jean-Louis
  • Londeix, Laurent
  • Essallami, Latifa
  • Kallel, Nejib
  • Sicre, Marie-Alexandrine
Source
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY Volume: 285 Issue: 1-2 Pages: 17-29 Published: 2010
ISSN
0031-0182 eISSN: 1872-616X
Abstract

A high resolution micropalaeontological study of the core MID 04-2797 CQ recovered in the Sicilian-Tunisian Strait provides insights into the paleoclimatic history of the Mediterranean Sea at the transition between the western and eastern basin over the last 30 ka. Using the analysis of dinoflagellate cyst and planktonic foraminiferal assemblages, we reconstruct the paleoenvironmental changes that took place in this region. High abundances of cold temperate dinocyst species (Nematosphaeropsis labyrinthus, Spiniferites elongatus, Bitectatodinium tepikiense) and the polar planktonic foraminifera Neogloboquadrina pachyderma (left coiling) reveal three major cooling events synchronous with North Atlantic Henrich events 1 and 2 (H1 and H2) and the European and North Atlantic Younger Dryas event. During the Holocene, the presence of warm dinocyst species (Spiniferites mirabilis and Impagidinium aculeatum) and planktonic foraminifera (Globorotalia inflata and Globigerinoides ruber), reflects a significant increase of sea surface temperatures in the western Mediterranean basin, but a full warming was not recorded until 1500 years after the onset of the Holocene. Moreover, our results show that the Holocene was interrupted by at least four brief cooling events at similar to 9.2 ka, similar to 8 ka, similar to 7 ka and similar to 2.2 ka cal. FIR which may be correlated to climatic events recorded in Greenland ice cores and in the Atlantic Ocean. (C) 2009 Elsevier B.V. All rights reserved.

Author Keyword(s)
  • Dinocysts
  • Planktonic foraminifera
  • Mediterranean region
  • Heinrich events
  • Holocene
  • Presapropelic condition
KeyWord(s) Plus
  • GLACIAL-INTERGLACIAL TRANSITION
  • NORTHERN NORTH-ATLANTIC
  • HIGH-RESOLUTION RECORD
  • ORGANIC-CARBON
  • HYDROGRAPHIC CHARACTERISTICS
  • PALYNOLOGICAL EVIDENCE
  • SURFACE TEMPERATURE
  • HEINRICH EVENTS
  • LATE QUATERNARY
  • TYRRHENIAN SEA
ESI Discipline(s)
  • Environment/Ecology
  • Geosciences
Web of Science Category(ies)
  • Geography, Physical
  • Geosciences, Multidisciplinary
  • Paleontology
Adress(es)

[Rouis-Zargouni, Imene; Turon, Jean-Louis; Londeix, Laurent] Univ Bordeaux 1, EPOC, UMR 5805, F-33405 Talence, France; [Rouis-Zargouni, Imene; Essallami, Latifa; Kallel, Nejib] Fac Sci Sfax, Lab GEOGLOB, Sfax 3028, Tunisia; [Sicre, Marie-Alexandrine] IPS CNRS INSU CEA UVSQ, Lab Sci Climat & Environm, F-91198 Gif Sur Yvette, France

Reprint Adress

Rouis-Zargouni, I (reprint author), Univ Bordeaux 1, EPOC, UMR 5805, Ave Fac, F-33405 Talence, France.

Country(ies)
  • France
  • Tunisia
CNRS - Adress(es)
  • Environnements et paléoenvironnements océaniques et continentaux (EPOC), UMR5805
  • Laboratoire des sciences du climat et de l'environnement (LSCE), UMR8212
Accession Number
WOS:000274563700002
uid:/FD5L4T93
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