Pollen dataset from bat guano deposits in southeastern Amazonia

This dataset provides the raw pollen counts from the 25 bat guano samples. Five caves in the Carajás region, located in southeastern Amazonia, were sampled. For pollen analysis, roughly 1 cm3 of bat guano was used for each sample. One tablet of Lycopodium spores containing 20,848 grains was introduced to each sample to aid in the estimation of pollen concentration (grains/cm3) using the formula: Pc * Li / Lc * V. Where Pc represents the amount of fossil pollen counted, Li represents the number of Lycopodium spores introduced (20,848), Lc represents the number of Lycopodium spores counted, and V represents the sample volume. Approximately 300 pollen and spore grains were counted for each sample using a Light Microscope equipped with an Axiocam 208 color (Zeiss Axiolab 5) with ZEN Blue 2021 imaging software to photograph pollen grains at 1000x magnification. TILIA (v.2.6.1) was used to create cluster analysis dendrograms and to plot pollen diagrams.