Two species of Cypridinae, two species of Cypridopsinae, two species of Cyclocypris, five species of Candona, one species of Ilyocypris and one species of Notodromas are recognized in the borrow-pit ostracode community.

A succession of dominant species, Ilyocypris bradyi, Ptamocypris smaragdina, Cypridopsis vidua, Cyclocypris serena, Candona spp., Cyclocypris ovum, and Notodromas monacha, is evident in the 32 borrow-pit ponds sampled seasonally.

Environmental data are used to support the proposed succession as well as to define optimum ranges of the successional species for 14 selected physico-chemical factors.

Quantitative seasonal and pond distributions of the dominant species are given.

The ostracode succession is considered as a useful tool in making ecological and paleoecological diagnoses in terms of changes in the physico-chemical environment.

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