five

(Table 4) Occurrence and abundance of radiolarian taxa in ODP Hole 123-766A

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species abundance: D = dominant (>20% of the total radiolarians determinable in a residue, numeric value = 6), A = abundant (10-20%, numeric value 5), C = common (5-10%,...

物种丰度分级标准如下:D为优势种(dominant),指单份残渣中可鉴定放射虫(Radiolarians)总个体占比超过20%,对应数值为6;A为丰富种(abundant),占比区间为10%~20%,对应数值为5;C为常见种(common),占比区间为5%~10%,……
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