Ecology, phenology and wintering behavior of Anatidae in the wetlands of Souk-Ahras (north-eastern Algeria)Acrónimo: MCNB-Bouali-et-al-2021
Understanding the spatial and temporal niche of waterfowl is essential for effective management and conservation. To determine the ecology and phenology of Anatidae in North Africa, we carried out a 12-month study (2019-2020) in three wetlands that constitute a winter refuge for waterbirds in the Souk-Ahras region in north-east Algeria. We surveyed species richness, the seasonal pattern of the number of Anatidae, and their wintering diurnal behavior using regular counts and scans. We recorded thirteen species: six wintering species (Anas clypeata, Anas penelope, Anas strepera, Tadorna tadorna, Aythya ferina, Anas crecca crecca) and three sedentary nesting species ( Anas platyrhynchos, Oxyura leucocephala, and Aythya nyroca), the latter two having national and international protection status. The survey showed that the wintering behavior of all these species is dominated by sleep, which on average accounts for almost half of the total time (48.91%). Our results indicate that the three wetlands host a complex waterfowl community that includes species of conservation concern and that these sites likely play an essential role in providing the essential resources for wintering.
The wilaya of Souk-Ahras (4,365.59 km2) is located in north-eastern Algeria, at the limit of the Tunisian border on a strip of 88 km. It is bound to the northeast by the wilaya of El-Taref, Guelma in the northwest, Oum El-Bouaghi in the southwest, Tébessa in the south, and Tunisia in the east
We used R 3.5.2 (R Development Core Team 2019) ) provided with the FactoMineR package. Data were expressed as mean ± SD for analysis. The Shannon and Weaver diversity index (H ') and equitability index (E) were calculated using ADE software (Chessel et al., 2004). Species are presented in the systematic order of Sibley and Monroe (1990). To conduct comparisons of diversity indices across the three sites, we applied the Kruskal-Wallis test (nonparametric alternative to ANOVA), first because our data did not meet the normality and homoscedasticity assumptions, and second to assess the difference in abundance across sites.
Tipo de contenido
Includes: point occurrence data.
Bouali, N., Baaloudj, A., Touarfia, M., Houhamdi, I., Maazi, M. C., Houhamdi, M., 2021. Ecology, phenology and wintering behavior of Anatidae in the wetlands of Souk-Ahras (north-eastern Algeria). Museu de Ciències Naturals de Barcelona. Dataset/Occurrence. https://doi.org/
This work is licensed under a Creative Commons Attribution (CC-BY) 4.0 License.
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