Pollen dataset from Santa Catarina, south Brazil

This dataset contains the raw pollen counts of the 50 samples from core SF-5. The sampled core was taken from the upstream of Palmital River's main channel in south Brazil. For each sample, approximately 1 ml of sediment was used for pollen analysis. One tablet of Lycopodium spores containing 20,848 grains was added to each sample as an exotic marker to aid the calculation of pollen concentration (grains/cm3) following the formula: Pollen concentration = Pc ∗ La / Lc ∗ V. Where Pc is the number of fossil pollen counted, La is the number of Lycopodium spores added (20,848), Lc is the number of Lycopodium spores counted, and V is the volume of the sample. Approximately 300 grains of pollen and spores were counted for each sample by using an Olympus Light Microscope with a LC35 camera (3.5-megapixel CMOS sensor) in conjunction with ZEN Blue 2012 imaging software to photograph pollen grains under 1000x magnification. Cluster analysis dendrograms and pollen diagrams were plotted by using TILIA (v.1.7.16).

本数据集包含来自SF-5岩芯的50份样品的原始花粉计数数据。该采样岩芯取自巴西南部帕尔米塔尔河（Palmital River）主河道上游区域。每份样品取约1毫升沉积物用于花粉分析。向每份样品中加入1片含20848粒孢子的石松孢子（Lycopodium spores）外标，用于辅助计算花粉浓度（单位：粒/立方厘米），计算公式如下：花粉浓度 = Pc × La / Lc × V。式中，Pc为统计的化石花粉数量，La为添加的石松孢子总数（20848粒），Lc为统计的石松孢子数量，V为样品体积。每份样品使用配备LC35相机（350万像素CMOS传感器）的奥林巴斯（Olympus）光学显微镜，并结合ZEN Blue 2012成像软件，在1000倍放大倍率下拍摄花粉粒，随后统计约300粒花粉与孢子。聚类分析树状图与花粉图谱均通过TILIA（v.1.7.16）软件绘制完成。