Palynology of sediment core MSM09/2_455-13

Palynological data (dinoflagellate cysts, pollen and spores, organic foraminifera linings and reworked palynomorphs) spanning the last deglaciation and early Holocene (16.5 – 10 ka BP) of MSM09/2_455-13 (GeoTü SL 170) from the central eastern Baffin Bay. Palynological slides were prepared using sediments from the < 63µm residue from wet -sieving that were subsequently oven-dried (50°C for ca. 24 hours). Slides were prepared following the protocol of de Vernal et al., 1996 (https://www.researchgate.net/publication/312369989_Techniques_de_preparation_et_d'analyse_en_micropaleontologie). Modifications to the protocol included overnight treatment of the second hydrofluoric acid step. Dinoflagellate cysts (or dinocysts) were identified to species or genus levels following the nomenclature of Radi et al., 2013 (https://doi.org/10.1016/j.marmicro.2012.11.001) and Rochon et al., 1999 (https://hdl.handle.net/10013/epic.14283). At least 150 Lycopodium spores were counted per sample to assess concentration (i.e., dinoflagellate cysts g-1). Fluxes of dinoflagellate cysts, pollen and spores, organic foraminifera linings and reworked palynomorphs were calculated by multiplying the concentration (individuals g-1) by the mass accumulation rate (MAR; g cm2 ka-1). The MAR was calculated by multiplying dry bulk density (see Andersen et al.,2017 https://doi.org/10.1007/978-94-024-0990-1_6) by the linear sedimentation rate from our age model (cm ka-1).