Pollen raw counts of sediment core LLCore2 from Lost Lake, British Columbia in 2020

This dataset provides pollen counts for the Holocene lacustrine sedimentary sequence retrieved from Lost Lake, Canada (49.4038, -122.9756, 235 m above sea level). The LLCore2 composite sediment core was collected from Lost Lake, in the Lower Seymour Conservation Reserve, North Vancouver, British Columbia, Canada in fall 2020. The composite core is composed of a 0.41 meter surface core, collected using a Glew gravity corer, and a 2.41 meter sediment core collected using a Livingstone piston corer. The chronology was established using 210Pb, 137Cs, and accelerator mass spectrometry 14C radiometric dating. 1-cm³ volumetric pollen samples were selected at 10-cm intervals along the core, and isolated according to Faegri and Iversen (1989) and Moore et al. (1991). Pollen and spores were counted using a Leica M205C stereomicroscope, and measured against depth (m) and age (ka BP). […]

本数据集收录了加拿大Lost Lake（坐标：49.4038, -122.9756，海拔235米）的全新世湖泊沉积序列中的花粉计数。该LLCore2复合沉积岩心于2020年秋季在加拿大不列颠哥伦比亚省北温哥华的Lower Seymour自然保护区Lost Lake采集。复合岩心由0.41米深的表面岩心和采用Glew重力岩心采集的2.41米沉积岩心组成。年代测定采用210Pb、137Cs和加速器质谱14C放射性测年法完成。在岩心中每隔10厘米选取1立方厘米的花粉样本，并根据Faegri和Iversen（1989年）以及Moore等人（1991年）的方法进行分离。花粉和孢子计数使用Leica M205C立体显微镜进行，并对照深度（米）和年龄（公元前千纪）进行测量。