Notes on the dragonfly fauna of very small pools near Münster, Westfalia, German Federal Republic
Notulae odonatologicae , Volume 1 - Issue 1 p. 11- 14
The odonate fauna of small meadow pools was recorded for several years. Even the permanent pools cenoses are relatively poor; Lestidae are completely lacking. Pyrrhosoma nymphula and Erythromma najas dominate in clean waters, whereas Ischnura elegans withstands a certain degree of pollution. Adult Anisoptera are absent, save for Anax imperator, which established territories even at the smallest bodies of water.
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