Libellen: Summary

The Dutch dragonflies (Odonata) In 1991 the Dutch Youth Organisation for Nature Studies (NJN) initiated a project aimed to collect all the members’ dragonfly records. Other organisations joined and by 1993 a national survey was, quite unintentionally, a fact. Between 1991 and 1997 more than 200 observers gathered over 165,000 records. This book offers an account in the Dutch language of the current knowledge of the morphology, ecology, behaviour, diversity, threats and conservation of dragonflies, and presents the distribution of Dutch dragonflies from 1850 to 1997 (whilst indicating recent unexpected developments up to 2000 in some species). Below a brief summary of the content of the various chapters is given. An English summary of the knowledge of each species is provided in Chapter 11.