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Katharina Müller-Navarra*, A. Lochte & G. Schmiedl University of Hamburg

Benthic foraminiferal response to trophic changes across the last glacial-Holocene transition in the abyssal eastern Mediterranean Sea. Katharina Müller-Navarra*, A. Lochte & G. Schmiedl University of Hamburg *katharina.mueller-navarra@uni-hamburg.de. Study Area . Study Area.

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Katharina Müller-Navarra*, A. Lochte & G. Schmiedl University of Hamburg

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  1. Benthicforaminiferalresponsetotrophicchangesacrossthe last glacial-Holocenetransition in the abyssal easternMediterraneanSea Katharina Müller-Navarra*, A. Lochte & G. Schmiedl University of Hamburg *katharina.mueller-navarra@uni-hamburg.de

  2. Study Area Study Area SL71-2

  3. Sapropel formation 0.1 mm 0.1 mm Approach Globobulimina affinis Chilostomella oolina Katharina Müller-Navarra

  4. Results & Discussion I Baseline Baseline 3xNutri 3xNutri Nile+Nutri Nile+Nutri IniGlac IniGlac IniGlac+3xNutri IniGlac+3xNutri Levantine >1800 m [R. Grimm 2012, unpubl.] Katharina Müller-Navarra

  5. Results & Discussion II Q-mode PCA PC2 A.tubulosa 0.1 mm PC3 Q. viennensis Sapropel S1 PC1 M. subrotunda PC4 C. laevigata 0.1 mm Cal. years BP foodcontent ultra-oligotroph oligotroph mesotroph oligotroph Katharina Müller-Navarra

  6. Results & Discussion III Sapropel S1 Bolivinaspp Individuals >125µm Ind./g Cal. years BP 20 µm Eponides pusillus Sapropel S1 Individuals 63–125µm 20 µm Anomalinoides minimus Cal. years BP

  7. Conclusions - Benthicforaminiferalfaunasarelackingevidenceforeutrophication in the Levantine Basinbefore sapropel S1 formation - The model shows: thereisthe potential todevelope an oxygendepletionwithin a time periodeof 6000 years due toenhancedfreshwatersupply (- Wearecurrentlymeasuringbenthic isotope data) Katharina Müller-Navarra

  8. Thanks! Katharina Müller-Navarra*, A. Lochte & G. Schmiedl University of Hamburg *katharina.mueller-navarra@uni-hamburg.de Katharina Müller-Navarra

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