Diversité floristique des mares temporaires de la région d’Annaba (Nord-Est Algérien)

Nine wetlands in Annaba region (North East of Algeria) were the subject of floristic inventories during three years (2014–2016). We have revealed the presence of five types of temporary ponds in which Ranunculus aquatilis L is dominant. The studied flora is rich and diversified. It comprises 190 species and 143 genera belonging to 58 botanical families. These species were either strictly subservient to humid zones or transgressive from terrestrial environments. This flora is characterized by a big proportion of rare and / or threatened taxa (11.05%). The composition of global biological spectra shows the dominance of therophytes, with 99 taxa (52.11%). The majority of the listed species belong to the Mediterranean phytochronic species. Eighteen taxa belonged to the endemic category. The preservation of this exceptional biodiversity, threatened in the short term, urgently requires phytoecological studies and relevant protection measures.