(Table 7) Distribution of planktonic foraminifers in ODP Hole 112-685A
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Species abundance: A = abundant (>10 % of assemblage), C = common (3-10 %), F = few (0.5-3 %), R = rare (<0.5 %), T = tarce (only one or two specimens in entire...
物种多度(Species abundance)分级标准如下:A为优势种(abundant),占群落组成的10%以上;C为常见种(common),占比3%~10%;F为少见种(few),占比0.5%~3%;R为稀有种(rare),占比低于0.5%;T为偶见种(trace),即整个调查范围内仅记录到1或2份标本。



