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.

本数据集提供了25份蝙蝠粪便样本的原始花粉计数数据。采样区域为位于亚马孙东南部的卡拉哈斯（Carajás）地区，共选取该区域内5处洞穴开展采样。每份样本取约1 cm³的蝙蝠粪便用于花粉分析；每份样本均加入1片含20848个孢子的石松孢子（Lycopodium）标准片，以借助公式Pc×Li/(Lc×V)估算花粉浓度（单位：粒/cm³），其中Pc为已计数的化石花粉粒数，Li为加入的石松孢子总数（20848），Lc为已计数的石松孢子数，V为样本体积。每份样本均通过配备Axiocam 208彩色成像模块的蔡司Axiolab 5光学显微镜，搭配ZEN Blue 2021成像软件，以1000倍放大倍率拍摄花粉粒，共计计数约300个花粉与孢子粒。本研究使用TILIA（v.2.6.1）软件绘制聚类分析树状图与花粉分布图。