Nesting ecology of Ferruginous Duck<i>Aythya nyroca</i>in north-eastern Algeria

Fouzari, Aicha; Samraoui, Farrah; Alfarhan, Ahmed H.; Samraoui, Boudjéma

doi:10.1080/15627020.2015.1108165

Cited by 22 publications

(12 citation statements)

References 39 publications

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“…The coastal wetlands of north africa are therefore critical foraging areas for many waterbirds during winter and migration periods, since they must build up sufficient fat reserves, which are crucial for their survivaland breeding on nesting grounds (Samraoui, B., Samraoui, F., 2008;Liordos, 2010). in coastal wetlands of north africa,a wide literature has been recognized on the link between habitats and waterbirds' life history, but the focus often was on single species, especially the endangered ones such as Marbled duck Marmaronetta angustirostris, Ferruginous duck Aythya nyroca and white-headed duck Oxyura leucocephala (see Green, Hamzaoui, 2000;Meziane et al, 2014;Fouzari et al, 2015). also, all the studies considered only the breeding season and there have been no studies taking a habitat perspective in large, multi-species assemblages through the year,as referred in similar wetlands around the south European coast(see Green, 1998;Paracuellos, 2006;Liordos, 2010;rizzo, Battisti, 2009).…”

Section: Introductionmentioning

confidence: 99%

Comparing habitat preferences of a set of waterbird species wintering in coastal wetlands of North Africa: implication for management

Elafri

Belhamra

Houhamdi

2017

Ekológia (Bratislava)

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Every year, the Coastal wetlands of North Africa support an important wintering waterbird population of many Palearctic and sub-Saharan species of various contrasting habitat requirements. In this study, we describe the habitat use by24 water-obligate species wintering in a coastal wetland of the Northeastern Algeria (the wetland of Lake Tonga), highlighting thereby the ecological mechanisms that support their coexistence and their resources partitioning. The analysis of resource exploitation (Relative frequency, Feinsinger niche breadth, Pianka niche overlap and Ivlev’s electivity indexes) showed that waterbird species inhabiting the lake wetland have several similarities in using the different habitat categories, which lead us to cluster them into 5 guilds (G1: one rails, two grebes and eight ducks; G2: five wading species and one gull; G3: three herons; G4: cormorants, mallards, and on gull; finally, G5: only one species Cattle egret (Bubulcus ibis).Almost all the species were specialists in resource utilization patterns (narrow niche breadths, both under 0.3) and therefore, vulnerable to fluctuations in resources, particularly the feeding habitats. Mean niche overlaps for all the pairs of species ranged from 0.05 to 0.68. The overall pattern in the community was higher niche overlaps between the species of a particular guild than those between other species. According to Ivlev’s electivity index, we found that only three microhabitats from seven were the most important for the discussed species, open water body was the most attractive, followed by meadows, muddy areas and floating- leafed vegetation. Similarities on habitat requirements derived from our region can provide important and optimal wetland management at multi-species assemblage level for this wetland and similar area around the African coast.

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Section: Introductionmentioning

confidence: 99%

Comparing habitat preferences of a set of waterbird species wintering in coastal wetlands of North Africa: implication for management

Elafri

Belhamra

Houhamdi

2017

Ekológia (Bratislava)

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“…We add that these birds usually disperse on the shallower lakeshores and muddy areas of the swamp, which are rich in amphibians and invertebrates, an important component of their diet (Kasprzykowski et al, 2014;Metallaoui et al, 2014). It should also be noted that waterbirds are known to adapt their food requirements to prey availability in their habitat (Metallaoui et al, 2014;Navedo et al, 2017); prey availability varies according to meteorological conditions, availability of trophic resources, and water depth (Saygili et al, 2011;Pérez-Crespo et al, 2013;Datta, 2014;Kasprzykowski et al, 2014;Bouriach et al, 2015;Fouzari et al, 2015). These structural dynamics clearly show nested assemblage models for waterbird communities and may be important determinants of aquatic system evolution.…”

Section: Discussionmentioning

confidence: 99%

Structure of waterbird assemblages in fragmented coastal wetlands of Northeastern Algeria

Bouldjedri

Mayache

2020

Arx. Misc. Zool.

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This study was carried out from 2007-2017 at the ecological complex of the Jijel wetlands in the north-east of Algeria. Censuses were conducted during the twelve months of each year to study variation in richness and abundance of waterbird populations for each season. We used distance sampling (point count and transect methods). A total of sixty species (eleven orders and sixteen families) were recorded. The Anatidae and Scolopacidae families were the most numerous with thirteen species. The common coot (Fulica atra), and the Mallard (Anas platyrhynchos) were the most abundant and frequent species each year. About 70 % of the species recorded occur as migrants, passing between the western Palearctic and their winter quarters in North Africa. Phenologically, we found 15 % were breeders, and from the point of view conservation status, 56 % were rare, 40 % were protected by Algerian regulations and 8 % were threatened species listed in the Red List of the International Union for Conservation of Nature (IUCN). Our results of ornithological monitoring in the wetlands in Algeria show that action is needed to address the consequences between birds, human activities, and climate change.

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“…Furthermore, Algerian wetlands are the most important breeding and wintering sites for the species in North Africa. They host its highest concentrations [8,21,[25][26][27][28][29][30], especially in the Northeast region, where wintering numbers fluctuate between 1500 and 3500 individuals [26] and more than 700 pairs breed at Lake Tonga alone [21]. Overall, the species population in Algeria seems to be improving [25,30,31], even though it is not the case in some Algerian wetlands [32],…”

Section: Discussionmentioning

confidence: 99%

“…Other factors contributing to the decline in the global species populations are related to the introduction of nonnative species and predators [17]. The increased drought due to climate change can also pose a threat [16,17,34], as its breeding depends on sufficient water levels, which can play a role in maintaining feeding areas for ducks and potentially decreasing the predation rate of nests [8,14,29,35]. Moreover, hunting represents a serious threat to the species, especially during the autumn passage and on its wintering areas in East Africa (e.g., Sudan) [11,36].…”

Section: Discussionmentioning

confidence: 99%

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Status and Trends of the Ferruginous Duck’s (Aythya nyroca) Wintering Population in Morocco: Analysis of 35 Years of Winter Census Data (1983-2017)

Ouassou

Dakki

Lahrouz³

et al. 2018

International Journal of Zoology

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The Ferruginous duck is a winter visitor and breeding resident in Morocco. The species breeds regularly in several coastal and inland wetlands, with remarkable numbers in some marshlands (Sidi Boughaba, Fouwarate, Bargha, Bas Loukkos, etc.). This duck is listed as near threatened in the IUCN Red List, and its populations have been in decline in many European countries. In Morocco, the national wintering population has known, during the last decade, a strong increase, in both its numbers (from tens to thousands of individuals) and distribution area (from a couple of sites to more than 21 wetlands). The North-West region of Morocco has been hosting regularly, during the last decade, between 31 and 91% of the Moroccan wintering population, which is mainly concentrated in two marshlands: Merja de Fouwarate and Merja de Sidi Boughaba. A small reservoir, Barrage Hassar, recently created in the Centre-Atlantic region, has also been, in recent years, one of the most important wintering sites of the species. 15 wetlands have hosted, at least once during the last decade, more than 1% of the regional population of “West Mediterranean/North and West Africa”. This work is an important step to a better knowledge of the Ferruginous duck’s population. This knowledge is the basis for adopting adequate measures for the conservation of the species at the national and international level.

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Nesting ecology of Ferruginous DuckAythya nyrocain north-eastern Algeria

Cited by 22 publications

References 39 publications

Comparing habitat preferences of a set of waterbird species wintering in coastal wetlands of North Africa: implication for management

Comparing habitat preferences of a set of waterbird species wintering in coastal wetlands of North Africa: implication for management

Structure of waterbird assemblages in fragmented coastal wetlands of Northeastern Algeria

Status and Trends of the Ferruginous Duck’s (Aythya nyroca) Wintering Population in Morocco: Analysis of 35 Years of Winter Census Data (1983-2017)

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