NDLI: Dragonfly Assemblages in Arid Tropical Environments: A Case Study from Western Namibia

Content Provider	Springer Nature Link
Author	Suhling, Frank Sahlén, Göran Martens, Andreas Marais, Eugene Schütte, Carsten
Copyright Year	2006
Abstract	Dragonflies have been proposed as indicators for the ecosystem health of freshwater wetlands. For their useful functioning as indicators it is, however, necessary to identify species compositions in specific habitats and species-habitat associations, particularly in the tropics, where such knowledge is still weak. We examined the dragonfly species composition of 133 localities in the arid environment of western Namibia. An analysis of nestedness indicated that distinct, and predictable patterns of species associations can be expected. Discriminant analyses revealed that most of the nine habitat types separated by structural and hydrological parameters are well discriminated by their dragonfly assemblages. Spring brooks in particular host a specific assemblage, which is threatened due to the habitat restriction of several species, as well as by recent habitat loss and degradation. Using a hierarchical method of several criteria we demonstrated the selection of a set of potential indicator species from the species set, most of these being useful indicators for spring brook assemblages. The conservation status of certain habitats and species is discussed. We propose that dragonflies will have a high indicator potential for threatened freshwater wetlands in such areas and may also serve as an indication of the sustainable use of water resources including evaluating measures to rehabilitate environments.
Starting Page	311
Ending Page	332
Page Count	22
File Format	PDF
ISSN	09603115
Journal	Biodiversity and Conservation
Volume Number	15
Issue Number	1
e-ISSN	15729710
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2006-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Freshwater wetland conservation Indicators Odonata Species composition Evolutionary Biology Tree Biology Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Ecology Ecology, Evolution, Behavior and Systematics Nature and Landscape Conservation

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