ENVIRONMENTAL CHANGES IN THE SE AND NE BLACK SEA DURING THE LATE QUATERNARY: PALYNOLOGICAL EVIDENCE
To assess the synchronicity of changes at the scale of the basin during the Holocene, a marine sequence (AK2575) collected off Arkhipo Osipovka, on the NE shelf, has been studied using a multi-proxy approach (pollen, dinocysts, ostracods, mollusks). Comparison with dinocyst records from the SW and the SE shows strong similarities but also highlights some discrepancies that may be explained by local influence.
Records older than the Holocene are rare and challenging to date due to a lack of stratigraphical markers. One sequence, 22-CG3, from the southern region of the Black Sea, contains the Last Interglacial (LIG) interval as well as the Holocene. Dinocyst assemblages for both interglacials are dominated by Lingulodinium machaerophorum and Spiniferites ramosus, but the occurrence of Tuberculodinium vancampoae, Spiniferites pachydermus and Bitectatodinium tepikiense during the LIG suggests a warmer and more saline environment compared to the present interglacial.
Pollen records also allowed to understand how climatic conditions are linked to regional and/or northern hemisphere forcing.