δ¹⁵N in planktonic foraminifera species Globigerina bulloides and Globorotali...

Individual species were identified and ~550 individuals per species were picked from the >250 µm fraction under dissecting microscope for each sample. Approximately 7 mg of...针对每个样本，先完成单个物种的鉴定，随后在解剖显微镜（dissecting microscope）下，从粒径大于250微米的筛分级分中挑取每个物种约550个个体。约7毫克的……