Maria Papadopoulou is a PhD student in the CRC project B2. She studied Forestry and Natural Environment at Aristotle University of Thessaloniki, ownes a master in Palynology and Palaeobotany from the same institute and started her PhD project in January 2014 at the University of Cologne.
Pollen production and dispersal modes vary between different plant species and depositional sites. Studying different areas along major vegetation gradients helps understanding the pollen-vegetation relationship. Interest to reconstruct past changes in floristic and landscape diversity also requires investigating the modern pollen-vegetation relationship with respect to palynological and floristic richness and evenness. So far only few studies have collected detailed floristic and pollen data, and compared these datasets directly. In this study, I use diversity indices to compare pollen assemblages of moss polsters with plant species assemblages, from two landscapes in different biogeographical regions, varying in species vegetation composition and canopy openness and a temperate-continental (Tuşnad-Bai, Romania) and Mediterranean (Mts. Pieria, Greece) climate. Tuşnad-Bai is situated in central Romania within the Carpathian Mts., and is characterized by a smaller species pool and higher vegetation homogeneity (lower beta diversity) compared to Pieria Mts., situated in north-central Greece. The latter represents an oro-Mediterranean ecosystem with very steep ecological and floristic gradients. I calculated the Shannon and Simpson index as well as the Rényi profile for pollen and vegetation data and computed the Spearman Correlation Coefficient to compare the results between the datasets. Additionally I calculated the Linear relationship between Rarefaction (ET500) in pollen assemblages and the pollen type richness of vegetation plots for all the different datasets.
Date, Time: 29/06/2015, 14:45 h – 15:30 h