One of the smallest of the Cap Bon man-made reservoirs, Sidi Abdelmonem is also one of the oldest, with the most natural fringing vegetation cover, including Phragmites australis, Typha angustifolia and Juncus species.
See Box for key species. Due to the fringing vegetation, this is one of the best sites for nesting Oxyura leucocephala (15–80 pairs resident). Marmaronetta angustirostris also occurs and probably breeds. Small numbers of Aythya nyroca occur in late summer. Other waterbirds that winter at the site include Anas platyrhynchos, A. querquedula, A. clypeata, A. acuta, Aythya ferina, Fulica atra and Porphyrio porphyrio.
Non-bird biodiversity: None known to BirdLife International.
Pressure/threats to key biodiversity
Disturbing and hunting are the main threats affecting the site.