Pollen-based vegetation reconstruction from IODP Expedition 353 Site U1446 (19°5'N, 85°4'E, 1430 m water depth) from 437,000 to 363,000 years ago, a period centered on MIS 11. The dataset includes counts and percentages of all identified pollen and spore morphotypes, as well as the main ecological groups: tropical forest, wet evergreen forest, tropical deciduous forest and xerophyte plants.Pollen analysis: Samples of 1–5 g of dry sediment were processed using the standard protocol for marine samples, which includes coarse sieving (150 μm mesh), consecutive treatments with cold HCl and cold HF and micro-sieving (5 μm mesh). Residues were mounted unstained in a mobile media (glycerol) to allow polar and equatorial observations of pollen grains. Counting was performed using a Nikon light microscope at ×500 and ×1000 (oil immersion) magnification.

This dataset was additionaly funded by the French research program LEFE (INSU-CNRS) through Project MICMAc.