Odonata of Wadi Bouarroug (northeastern Algeria), and environmental determinants of their distribution
| Autor: | M. Ramdani, H. ELmsellem |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: | |
| DOI: | 10.48317/morjchem.v6i1.10323 |
| Popis: | The present paper describes odonates recorded over an extended period at wadi Bouarroug, south of lake Mellah, in the national reserve of Brabtia (North-east Algeria). In all, 42 weekly visits were made to four stations at wadi Bouarroug between March 2015 and February 2016. A total of 19 species of odonates comprising seven families (Calopterygidae, Lestidae, Plactycnemidae, Coenagrionidae, Gomphidae, Aeshnidae, Libellulidae) was recorded. Among the 19 species, autochthonous status was confirmed for 12 species. Two Maghrebian endemics species, Platycnemis subdilatata, Gomphus lucasii (“Data Deficient” species in the Mediterranean IUCN Red-List) were recorded. In the latest check-list of the odonates fauna of wadi Bouarroug, 11 species were reported,during 1993 and 1994. Eight species have been recently added (Lestes virens, Erythromma lindinii, Erythromma viridulu, Paragomphus geneii, Onychogomphus uncatus, Crocothemis erythraea, Trithemis arteriosa, Trithemis annulata) of which Paragomphus genei was recorded for the first time in the reserve of Brabtia in 2014 and its autochthonous status is confirmed at wadi Bouarroug from June 2015. Species richness along the wadi Bouarroug is positively correlated with density of riverine vegetation and with weak to moderate water flow during all the year. By contrast, species richness varies negatively with habitat fragmentation and the destruction caused by urbanization and pollution. As a result of this study, we do not propose any change of the "Red List of the IUCN" classification of the recorded species recorded at wadi Bouarroug. However, the presence of some taxa like Calopteryx haemorrhoidalis and Paragomphus geneii at wadi Bouarroug, testifies to the persistence of high-quality natural environments which are able to still support an important diversity of aquatic species. Moroccan Journal of Chemistry, Vol 6, No 1 (2018) |
| Databáze: | OpenAIRE |
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