La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	An ecological network is as good as a major protected area for conserving dragonflies
Auteurs :	James S. Pryke, Auteur ; Michael J. Samways, Auteur ; Kathleen De Saedeleer, Auteur
Type de document :	Article
Dans :	Biological Conservation (191 NOV 2015)
Article en page(s) :	537-545
Langues:	Anglais
Résumé :	Freshwaters are highly threatened ecosystems, with agro-forestry being a major threat to sub-tropical wetlands. In the Maputaland-Pondoland-Albany global biodiversity hotspot of South Africa, large-scale ecological networks (ENs) of remnant vegetation have been set aside with the aim of mitigating the adverse effects of plantation forestry. However, the effectiveness of these ENs for maintaining freshwater biodiversity, especially that of still waters, is poorly known. In response, we compare mud wallows of large mammals, ponds and small marshes in an EN with those in an adjacent World Heritage Site protected area (PA) as reference. For this comparison we used dragonfly adults in view of their effectiveness as bioindicators. A total of 47 species was recorded at 105 sites. The EN shared 74% of its species with the PA. However, equal numbers of range restricted species were recorded from the EN and the PA. Five species were recorded as particular to the

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