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Odonata enter the biodiversity crisis debate: The first global assessment of an insect group |
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| Authors: | Viola Clausnitzer Vincent J Kalkman Ben Collen Matja? Bedjani? Klaas-Douwe B Dijkstra John Hawking Elena Malikova Kai Schütte Reagan J Villanueva Keith Wilson |
| Institution: | a Institute for Geography, Philipps-University of Marburg, Deutschhausstr. 10, 35032 Marburg, Germany b National Museum of Natural History, Naturalis, P.O. Box 9517, 2300 RA, Leiden, The Netherlands c Institute of Zoology, Zoological Society of London, Regent’s Park, London NW1 4RY, UK d Kolodvorska 21b, SI-2310 Slovenska Bistrica, Slovenia e IUCN Species Programme, 219c Huntingdon Road, Cambridge CB3 ODL, UK f 6 Bramley Avenue, Coulsdon, Surrey CR5 2DP, UK g Murray Darling Freshwater Research Centre/Latrobe University, P.O. Box 991, Wodonga, Victoria 3689, Australia h Kanagawa Prefectural Museum of Natural History, 499 Iryuda, Odawara 250-0031, Japan i Department of Zoology, Blagoveshchensk State Pedagogical University, Lenina Str. 104, Blagoveshchensk, Amurskaya Oblast 675000, Russia j Slater Museum of Natural History, University of Puget Sound, Tacoma, WA 98416, USA k Department of Animal Ecology and Conservation, University of Hamburg, Martin-Luther-King-Platz 3, 20146 Hamburg, Germany l Institut für Geoökologie, Technische Universität Braunschweig, Langer Kamp 19c, 38106 Braunschweig, Germany m Biological Collection, Biology Department, Ateneo de Davao University, Davao City, Philippines n Instituto de Bio y Geociencias (IBiGeo), Museo de Ciencias Naturales, Universidad Nacional de Salta, Mendoza 2, 4400 Salta, Argentina o 18 Chatsworth Road, Brighton BN1 5DB, UK |
| Abstract: | The status and trends of global biodiversity are often measured with a bias towards datasets limited to terrestrial vertebrates. The first global assessment of an insect order (Odonata) provides new context to the ongoing discussion of current biodiversity loss. A randomly selected sample of 1500 (26.4%) of the 5680 described dragonflies and damselflies was assessed using IUCN’s Red List criteria. Distribution maps for each species were created and species were assigned to habitat types. These data were analysed in respect to threat level for regions and habitat types. We have found that one in 10 species of dragonflies and damselflies is threatened with extinction. This threat level is among the lowest of groups that have been assessed to date, suggesting that previous estimates of extinction risk for insects might be misleading. However, Odonata only comprise a small invertebrate order, with above-average dispersal ability and relatively wide distribution ranges. For conservation science and policy to be truly representative of global biodiversity a representative cross-section of invertebrates needs to be included. |
| Keywords: | Odonata Global assessment Conservation status Biodiversity indicators IUCN Threatened species Freshwater (health/environment) |
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