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Survival possibilities of the dragonfly Aeshna viridis (Insecta, Odonata) in southern Sweden predicted from dispersal possibilities
Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap.
Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), Tillämpad matematik och fysik (MPE-lab).
Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Bio- och miljösystemforskning (BLESS).
2016 (engelsk)Inngår i: Journal of Insect Conservation, ISSN 1366-638X, E-ISSN 1572-9753, Vol. 20, nr 2, s. 179-188Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We use public records from 1980 to 2014 to analyse survival of the EU Annex IV species Aeshna viridis in Sweden, a dragonfly strongly associated with the plant Stratiotes aloides. We clustered localities with S. aloides based on assumed dispersal abilities of A. viridis, using a dispersing radius of 2–100 km, calculating the proportion of sites with S. aloides that A. viridis is able to reach. If mean dispersal capability is high (40 km or above) 92.6 % or more of the localities are connected. For a good disperser, the probability of long-time survival is good. We further analysed the species richness of other Odonata and aquatic plants at 98 localities from the dataset. A. viridis co-occurred with more Odonata in the presence of S. aloides and running water but not in lakes. S. aloides sites had a higher number of other aquatic plants. Area had no impact on the occurrence of the species. For the present situation we surveyed 32 localities with known occurrence of the species. Only half of the sites for S. aloides contained any specimens while A. viridis occurred in the same number of sites. The species co-occurred in only 8 of 32 sites. In four sites A. viridis larvae appeared among Menyanthes trifoliata, Phragmites australis, Potamogeton natans and Sphagnum spp., indicating that at high latitudes A. viridis breeds among other species. Indirect monitoring based only on S. aloides would underestimate the number of populations of the dragonfly. © 2016 Springer International Publishing Switzerland

sted, utgiver, år, opplag, sider
Dordrecht: Springer Netherlands, 2016. Vol. 20, nr 2, s. 179-188
Emneord [en]
Annex IV, egg laying habitat, habitat preferences, metapopulation, monitoring, public database
HSV kategori
Identifikatorer
URN: urn:nbn:se:hh:diva-30794DOI: 10.1007/s10841-016-9850-5ISI: 000376022300002Scopus ID: 2-s2.0-84957663314OAI: oai:DiVA.org:hh-30794DiVA, id: diva2:922022
Tilgjengelig fra: 2016-04-21 Laget: 2016-04-21 Sist oppdatert: 2018-03-22bibliografisk kontrollert

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