Foraminiferal data and sea surface temperature of sediment core MD07-3081

This dataset contains planktonic foraminiferal abundance (Ind. g-1), Summer Sea Surface Temperature (SSST °C) reconstruction, fragments (%), and relative percentage of foraminiferal species and associated standard error (%) from core MD07-3081. Quantitative and qualitative analyses of planktonic foraminiferal assemblages were performed on 38 samples from core MD07-3081, with a resolution of 0.1 to 1 ka. To interpret only significant relative percentages, we calculated the associated error of each percentage, following the equation proposed by Patterson and Fishbein (1989). The reconstruction of summer sea surface temperature was determined using the PaleoAnalog program (Therón et al., 2004) by comparing the relative abundances of planktonic foraminifera with the modern core database for the Southern Ocean (Haddam et al., 2016). Levels with a census count of more than 300 individuals and less than 20% presence of fragments were used to ensure good preservation and reliable quantitative estimates (Haddam et al., 2016).

本数据集包含MD07-3081岩芯中的浮游有孔虫（planktonic foraminifera）丰度（Ind. g⁻¹）、夏季海表温度（Summer Sea Surface Temperature, SSST）重建结果、有孔虫碎屑占比（%），以及各有孔虫物种相对百分比及其伴随的标准误差（%）。研究对MD07-3081岩芯的38个样品开展了浮游有孔虫组合的定性与定量分析，年代分辨率为0.1至1 ka。为仅保留具有统计学意义的相对百分比数据，本研究遵循Patterson与Fishbein（1989）提出的计算公式，对各百分比值计算其伴随误差。夏季海表温度重建结果通过PaleoAnalog程序（Therón等，2004）完成，具体方法为将浮游有孔虫相对丰度与南大洋现代岩芯数据库（Haddam等，2016）进行比对。为确保样品保存状态良好且定量估算结果可靠，本研究仅采用个体计数超过300枚、碎屑占比低于20%的样品层位（Haddam等，2016）。