Harabiš F. 2023
Deliry C. 2026 – Harabiš F. 2023. - In : Odonates du Monde (Histoires Naturelles) [2004-2026] – Version 14305 du 18.07.2023. – odonates.net
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Harabiš F. 2023 - Post-mining areas as the last area for the expansion of the declining Siberian Winter damselfly (Odonata: Lestidae). - J. of Insect Conservation, 15 juillet 2023.
Abstract
The regionally threatened damselfly Sympecma peadisca is one of the few Central European dragonfly species included is considered as Near Threatened in the European Red list. The major threats to this species remain unclear. This species has a unique life history and several adaptations to enabling survival even in semidesert areas, such as overwintering in the adult stage. However, the closely related, more thermophilic species Sympecma fusca has undergone a major range expansion in Europe. Based on data from 129 sites and combining several analytical approaches, I found the following: 1. According to local freshwater conditions, Sympecma paedisca is a typical habitat generalist occupying a wide range of habitats. 2. It requires a wide range of terrestrial habitats to complete its life cycle. 3. An analysis of the land used by both species clearly indicates that both species avoid intensive agricultural areas; however, Sympecma fusca can also occur in suburban areas, where Sympecma paedisca is absent. 4. Projections of the Least Cost Path analysis indicate that the only localities where the species is currently spreading are habitats arising as a consequence of mining activities. The example of Sympecma paedisca is clear evidence of a freshwater species that responds very negatively to the homogenization of the terrestrial environment, even when its natal habitat is not significantly affected. The frequent occurrence of species in postmining areas suggests that species with complex habitat requirements can find suitable secondary habitats where they can prosper in the long term.
