Nitrogen limitation affects the sinking property of Microcystis by promoting carbohydrate accumulation.

Nitrogen limitation has been proven to inhibit Microcystis proliferation, and the significant decline in Microcystis blooms in late summer or autumn has been considered to be related to the nitrogen depletion in water. Sinking loss is another factor that influences the dynamics of cyanobacteria in lakes. However, to date, it is still unclear how the sinking property of Microcystis responds to nitrogen availability.

[Distribution of organochlorine pesticides in surface sediments from Huangpu River and its risk evaluation].

This paper reports 20 organochlorine pesticides (OCPs) in surface sediments of Huangpu River in Shanghai, China. Pesticides were analyzed by GC/ECD with dual column. The concentration range of sigmaOCPs in sediments was 2.