(Table T4) Stratigraphic occurence and relative abundances of diatom taxa fro...
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Abundance: D = dominant >60%, A = abundant 30-60, C = common 15-30, F = few 3-15, R = rare <3, T = trace, X = present, - = none. Preservation: G = good, M = moderate, P =...
丰度分级规则如下:D为优势种(dominant),占比>60%;A为丰富种(abundant),占比30%~60%;C为常见种(common),占比15%~30%;F为少见种(few),占比3%~15%;R为稀有种(rare),占比<3%;T为痕迹种(trace);X为存在(present);-为无(none)。保存状态分级:G为良好(good),M为中等(moderate),P=……



