文章指出古群落和现代群落的种的相对丰度具有类似的分布，即对数正态分布。
Results indicate that the distribution of species relative abundance of paleocommunity is similar to that of living community and both have logarithmic normal distribution.
描述了厦门湾沉积物中的13种甲藻孢囊的形态与丰度、分布特征。
This article reports the morphology, densities and distribution characteristic of 13 dinoflagellate resting cysts in sediment of Xiamen Harbor.
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