Diversity and status of shorebirds in the estuaries of Algiers, northern Algeria

Résumé

Shorebird habitats have great importance in maintaining biodiversity and estuaries are among the most important habitats in this regard. The estuaries of Algeria are key habitats for migratory coastal birds along the Eurasian-African Flyway. The present study, conducted from February 2022 to December 2023, surveyed shorebirds in three estuaries located in Algiers: Réghaïa Estuary, Sablette, and Zéralda. Observations were made twice a month during early morning and late afternoon. A total of 27 shorebird species were recorded across the three estuaries, with each site showing distinct patterns of distribution, phenology, and conservation status. Réghaïa supported the highest bird diversity with 21 species recorded, reflecting its ecological richness, and suitability as a stopover, and wintering site for birds. Sablette exhibited the lowest diversity with eight species, attributable to significant human activity, and a lack of suitable habitats in the area. Zéralda recorded 13 species, indicating moderate diversity, and potential urban impacts on habitats. By assessing the status of birds and characterizing estuaries as habitats for shorebirds in Algeria, our observations provide support for shorebird conservation, and habitat management.

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