(Table 2) Relative abundance of nannofossils of ODP Site 103-638
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Species abundance: V = very abundant (>20 specimens per field of view), A = abundant (1-10 specimens per field of view), C = common (1 specimen per 11-100 fields of view), F...
物种丰度分级定义如下:V代表极丰富(单视野内标本数量大于20),A代表丰富(单视野内标本数量为1~10),C代表常见(每11至100个视野内可见1个标本),F……



