The species richness and cell abundance of Chaetoceros were characterized by a typical seasonal pattern.

角毛藻的种类丰富度和细胞丰度具有典型的季节性特征。

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Temporally, the species richness and cell abundance of Chaetoceros were characterized by a typical seasonal pattern, with the highest in spring and summer and the lowest in autumn and winter.

种类丰富度和细胞丰度在季节分布上表现为春夏季高于秋冬季，而在空间分布上总体表现为湾口高，向内湾逐渐降低。

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The typical seasonal pattern is for gold to top in February and form a significant low during the summer months.

FORBES: Gold: Why April Is a Key Month

The current chart of gold futures shows that in 2011, gold prices did not always adhere to the typical seasonal pattern.

FORBES: The Four Key Seasonal Trends for 2012

It covers the period from 2007 to the present because I wanted to demonstrate not only the validity of the seasonal trends, but also to point out some of the times when crude did not follow the typical seasonal pattern.

FORBES: The Four Key Seasonal Trends for 2012