Pollen Analysis for Reconstruction the Palaeoclimatic Phases in Lake Neor during the Late-Pleistocene to Holocene

Numerous palaeoclimatologists have studied the climate of different regions of Iran during Quaternary based on palynology of lake sediments. In this study the paleoclimatic phases of northwest of Iran have been discussed. We used pollen analysis for reconstructing the past vegetation and palaeoclimate of Lake Neor area located in the northwest of Iran. In this research a high resolution pollen study has been done for reconstruction the climate of study region during the late - glacial to early Holocene. Methodology In this study we used samples with interval distance equal 5 cm from the 3 meters of lower part of the core in which the samples cover 500 cm to 800 cm hight of the core. The pollen extraction followed the chemical treatment methods based on Moor et al. (1991). The chemical treatment carried out in Institut Méditerranéen d’Ecologie et de Paléoécologie (IMEP, UMR 6116 CNRS). Pollen determinations were performed by using the IMEP pollen reference slides collection and pollen atlases of Reille (1992, 1995, 1998), Beug (2004) and pollen morphological descriptions by van Zeist and Bottema (1977). Then during microscopic analysis we identified and counted the pollen grains by magnification equal 500X by using microscope Laica model. The pollen diagram drawn by the aide of TILIA and TGVIEW (Grimm, 2004, 2005). At the first we analyzed the samples by interval distance equal 10 cm. After finding some important events we also analyzed the samples by interval distance equal 5 cm. Therefore in this study the vegetation dynamic studied by relatively high resolution for understanding more about some events which extracted from the pollen diagram.