Length-frequency distribution of the eatable cockle, Cerastoderma edule from ...
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Counts = counts/sample = #/0.16 m^2. Sampled with stirring box 40x40 cm.The eatable cockle, Cerastoderma edule was quantitatively collected at monthly intervals (appr. new moon)...
计数规则：采样计数=单样本计数=每0.16平方米的个体数量，符号#代表个体总数。采用40cm×40cm的搅拌式采样箱完成采样。研究以每月一次（约于新月时段）的频率，定量采集可食用鸟蛤（Cerastoderma edule）样本……
