Pollen data from sediment core MD01-2444 on the Portuguese Margin, Marine Isotope Stage 3@en

Pollen analysis: Sediment samples of 1.5-4 cm3 were prepared for pollen analysis using the standard hot acid digestion technique. Fine sieving, through a mesh of 10 m or less, was not used as it could result in a loss of pollen. Residues were mounted in silicone oil for microscopic analysis at magnifications of 400, 630 and 1000 times. Abundances are expressed as percentages of the main sum, which includes all pollen except Pinus, Pteridophyte spores and aquatics. A minimum of 100 pollen grains, excluding Pinus, spores and aquatics, was counted in each sample. The pollen record was generated by V. Margari, with contributions from P.C. Tzedakis. […]