Le statut de l’Érismature à tête blanche (Oxyura leucocephala) dans les zones humides du nord-est algérien

Halassi, I., Elafri, A., Belhamra, M. & Houhamdi, M. (2016). Répartition et abondance de l’Érismature à tête blanche Oxyura leucocephala dans les zones humides du nord-est algérien. Alauda 84: 25–34.
PDF in ResearchGate

Abstract:

Status of the White-headed Duck Oxyura leucocephala in Northeast Algeria. The globally threatened White-headed Duck is one the most rare duck species in the Western Palearctic. Its distribution in Algeria is mainly restricted to the northeastern part of the country and the Hauts-Plateaux. In 2013 and 2014, 694 individuals were counted. The studied sites harboured distinct numbers in winter and in summer of the two years. The p-values (Kruskal Wallis test) were lower than 0.05. The Lake Tonga showed the highest numbers in winter and the Boussedra wetland in summer. The results indicated a stable occurrence in the studied areas without any difference between the two years. The PCA analysis showed a significant correlation between the distribution of this species and three following main factors: vegetation, surface area and water depth at the Boussedra wetland, Lake Tonga and Garaet Hadj-Taher. The lower occurrence in other parts of the studied areas, particularly on the Hauts-Plateaux, is mainly the consequence of drying out process and habitat degradation.

Érismature à tête blanche (Oxyura leucocephala), Marais de la Macta, Mostaganem, Algérie (‎Ali Mehadji‎)

Érismature à tête blanche (Oxyura leucocephala), Marais de la Macta, Mostaganem, Algérie (‎photo: Ali Mehadji‎)

Nidification réussie de l’Ibis falcinelle (Plegadis falcinellus) dans un milieu humide urbain en Algérie

Boudraa, W., Bara, M., Khemis, M. D. E., Boumaaza, M., Bouslama, Z. & Houhamdi, M. (2015). Nidification réussie de l’Ibis falcinelle Plegadis falcinellus dans un milieu humide urbain en Algérie. Alauda 83: 143–148.
PDF in ResearchGate

Abstract:

First successful breeding of the Glossy Ibis in the Boussedra wetland (El-Bouni near Annaba) in northeastern Algeria. The breeding occurred in a mixed colony of herons located in Tamarix gallica trees. The birds were present from mid March to mid July. 124 nests were censused, most of them (55.64 %) contained 4 eggs. Egg laying occurred from 4 April to 27 May 2014. Breeding success was of 92 %.

Le résumé: (de la communication affiché de Wahiba Boudraa présentée lors du 3éme Colloque International sur l’Ornithologie Algérienne à l’aube du 3ème millénaire (les oiseaux et leurs milieux):

Le marais de Boussedra (55 ha) est une zone humide périurbaine située dans la commune d’ElBouni, wilaya d’Annaba (Nord-est de l’Algérie). Elle héberge chaque année quelques 53 espèces d’oiseaux d’eau appartenant à 15 familles, dont la famille la plus représentée est celle des Anatidés une douzaine d’espèces. L’Ibis falcinelle Plegadis falcinellus est le seul de représentant de la famille des Threskiornithidés. Après une absence totale depuis plusieurs années, l’espèce s’est installée en Afrique du nord et a commencée à nicher depuis les années 2000. Elle niche avec des effectifs faibles dans des zones éloignées. Au niveau de la zone humide de Boussedra, elle est observée avec des effectifs avoisinant 160 individus. Au cours de la saison de reproduction de l’année 2014 (entre mars et juillet), cette espèce a nichée dans une héronnière mixte (Héron garde-bœufs Bubulcus ibis, Aigrette garzette Egretta garzetta, Bihoreau gris Nycticorax nycticorax, Crabier chevelu Ardeola ralloides et Blongios nain Ixobrychus minus) où un total de 120 nids ont été dénombré. Ceci représente la plus grande colonie observée en Afrique du nord. La reproduction a eu lieu dans une tamaricacée à Tamarix gallica qui a supporté plus de 2000 nids.

An overview of the Rallidae of Algeria with particular reference to the breeding ecology of the Purple Swamp-Hen (Porphyrio porphyrio)

Samraoui, F., Nedjah, R., Alfarhan, A. H. & Samraoui, B. 2015. An overview of the Rallidae of Algeria with particular reference to the breeding ecology of the Purple Swamp-Hen Porphyrio porphyrio. Wetlands Ecology and Management 23: 505-517.  doi: 10.1007/s11273-014-9404-0
PDF in ResearchGate.net

Abstract:

Rallids are good biological models to monitor anthropogenic changes to wetlands. The distribution of the Rallidae was mapped up during a survey of all major wetlands across Algeria and nest site selection, phenology, and breeding parameters of the Purple Swamp-Hen Porphyrio porphyrio were monitored at two distinct sites under contrasting conditions. Data were collected at Boussedra, an unprotected freshwater marsh during the years 2005 and 2008, and at Lake Tonga, a protected freshwater marsh during 2009. The onset of egg-laying was found to occur earlier (mid-February) than was recorded previously (end-March). There was much variation in the egg laying patterns and in the clutch sizes which dropped significantly from 5.8 ± 0.9 (Boussedra 2009) to 3.4 ± 0.9 (Boussedra 2008) and 3.9 ± 1.0 (Tonga 2009). This study, the first investigation of the ecology and conservation of the Purple Swamp-Hen in North Africa, suggests a decline in breeding success associated with steady habitat loss and ineffective enforcement of legislation.

Breeding ecology of the Marbled Duck Marmaronetta angustirostris at Boussedra march (Annaba, Northeast of Algeria)

Aberkane, M., Chettibi, F., Bakhouche, B., Draidi, K., Bouslama, Z. & Houhamdi, M. 2013. Breeding ecology of the Marbled Duck Marmaronetta angustirostris at Boussedra march (Annaba, Northeast of Algeria). Annals of Biological Research 4 (10): 103-107.  PDF

Abstract:

Marbled duck Marmaronetta angustirostris (Anatidae) nested for three consecutive years (2011, 2012 and 2013) in the marais de Boussedra (North-East of Algeria): a much polluted site. Nests are built on Scolymus hispanicus and Innula graveloens (Asteraceae). In water, the nests are built in clusters of Typha angustifolia (Typhaceae). Nesting occurs between mid-May and mid-June of each year. The eggs have a mean weight of 32.61g and a volume of 26.51 cm3. The hatching rate recorded is 40.40% and the causes of failure are many and the most important are predation by the White Stork Ciconia ciconia, the rodents and the dogs.

Chicks of the Marbled Duck (Marmaronetta angustirostris) after hatching

Chicks of the Marbled Duck (Marmaronetta angustirostris) after hatching (M. Abdekane)

Status and breeding ecology of the Common Moorhen in Algeria

Samraoui, F., Alfarhan, A. H., & Samraoui, B. (2013). Status and breeding ecology of the Common Moorhen Gallinula chloropus in Algeria. Ostrich 84: 137-144.
doi:10.2989/00306525.2013.823130
PDF  in ResearchGate.net

Abstract:

The status of the Common Moorhen Gallinula chloropus in Algeria and its breeding ecology in North Africa are reported for the first time. Nest site selection and breeding parameters were studied at two contrasting sites in north-east Algeria: Boussedra, an unprotected freshwater marsh of 55 ha subject to anthropogenic influence, during 2005 and 2008, and Lake Tonga, a protected freshwater marsh of 2 400 ha in 2009. Most nests (92%) at Boussedra were located in dense stands of lesser bulrush Typha angustifolia, whereas a few were found on lower branches of tamarisk Tamarix gallica trees. In contrast, at Lake Tonga nests were predominantly found on Scirpus lacustris (41%) or associated with alder trees Alnus glutinosa (32%). Egg-laying at both sites occurred between early April and the end of June. There was a significant decrease in egg volume as the breeding season progressed. Mean clutch size at Lake Tonga (7.8 ± 2.9, N = 23 clutches) did not differ significantly from that at Boussedra (6.7 ± 2.1, N = 14 clutches). Similarly, hatching success (67 –72%) and predation rate of nests with eggs (16–28%) did not vary significantly between sites. The Common Moorhen may be more resilient than marsh specialists to anthropogenic changes.

Moorhen (Gallinula chloropus) in its nest

Common Moorhen (Gallinula chloropus) at its nest. (Peter aka anemoneprojectors on Flickr, license: CC-by-sa)