Fersi W. auteur aut IRD Bassinot F. auteur aut IRD Lezine Anne-Marie auteur aut IRD text journalArticle eng We reconstructed the evolution of marine primary productivity across the last deglaciation in the Gulf of Aden based on micro-paleontological and sedimentological data from marine core MD92-1002. Dinoflagellate cysts analysis suggests that the glacial period was characterized by weakened upwellings and well ventilated bottom water. Primary productivity increased from 14.5 ka with a maximum between 12.6 and 10.8 ka, then declined during the Holocene. Maximum of primary productivity in the Gulf of Aden took place about 3 ka earlier than the maximum of upwelling intensity off the Oman margin, and was not phase-locked with the maximum of boreal summer insolation. XRF-derived bromine contents mimic the variations of Total Organic Carbon (TOC) in core MD92-1002. Both records show a strong glacial/interglacial signal that is largely decoupled from our reconstruction of surface productivity, suggesting that total organic content in core MD92-1002 is mainly controlled by preservation at the sea floor. specialized Gulf of Aden dinoflagellate cysts productivity organic carbon monsoon ADEN GOLFE OMAN 064 021 036 27 3 213-226 2016 1142-2904 https://www.documentation.ird.fr/hor/PAR00015364 1142-2904 https://www.documentation.ird.fr/hor/PAR00015364 IRD - Base Horizon / Pleins textes 2017-01-09 2017-08-23 PAR00015364 fre