Diet of the Coot<i>Fulica atra</i>(Aves, Rallidae) in the nature reserve of Lake Réghaïa (Algiers, Algeria)

Metna, Fatiha; Lardjane-Hamiti, Aicha; Boukhemza-Zemmouri, Nabila; Boukhemza, Mohamed; Merabet, Samira; Abba, Ramzi

doi:10.1080/21658005.2014.994363

Cited by 1 publication

(2 citation statements)

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“…Emergent vegetation was another pond variable important for habitat selection by coots, presumably because it provided nesting habitats and protection against aerial predators (Salathé, 1986). Luxuriance of emergent vegetation may also reduce competition with fish because coots feed on the shoots and leaves of emergent macrophytes (Borowiec, 1975;Allouche & Tamisier, 1984;Metna et al, 2015). Adverse fish effects on waterfowl may be to some extent mitigated by high pond/lake productivity (e.g.…”

Section: Discussionmentioning

confidence: 99%

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Habitat selection and reproductive success of coot Fulica atra on ponds under different fish size and density conditions

Nieoczym

Kloskowski

2018

Hydrobiologia

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Fish may influence habitat selection and reproductive success in waterfowl. We investigated the effects of common carp Cyprinus carpio on breeding coots Fulica atra along a gradient of fish size structure and density, created by separate stocking of age cohorts in ponds in eastern Poland. Coot breeding densities were higher on ponds with low biomass of small-sized, young-of-the-year fish than on ponds with medium-or large-sized fish, stocked at high biomass densities; they also increased with increasing submerged vegetation biomass (an effect correlated with water transparency) and emergent vegetation cover. Densities of nektonic and epibenthic macroinvertebrates and of amphibian larvae were also negatively influenced by fish size/density gradient, while densities of emerging insects were not affected. However, coot breeding success per pair was similar among pond types, while positively related to submerged vegetation, indicating that either plant food abundance was more important than the overall trophic impact of fish or fledgling production was additionally limited by factors other than food. Carp may adversely affect pond habitats of waterfowl both via trophic interactions and through abiotic disturbance of ecosystem processes. In coots, however, the effects can be mitigated by maintenance of abundant emergent vegetation and of submerged macrophytes resistant to fish.

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Section: Discussionmentioning

confidence: 99%

“…Coots rely on plant matter as the main food source during most of their life cycle (Hurter, 1972;Metna et al, 2015). During the breeding period, however, the share of animal food increases, because a protein-rich diet is crucial for breeding females and young birds (Borowiec, 1975;Horsfall, 1984;Brinkhof, 1997).…”

Section: Coot Biologymentioning

confidence: 99%

Habitat selection and reproductive success of coot Fulica atra on ponds under different fish size and density conditions

Nieoczym

Kloskowski

2018

Hydrobiologia

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show abstract

Diet of the CootFulica atra(Aves, Rallidae) in the nature reserve of Lake Réghaïa (Algiers, Algeria)

Cited by 1 publication

References 4 publications

Habitat selection and reproductive success of coot Fulica atra on ponds under different fish size and density conditions

Habitat selection and reproductive success of coot Fulica atra on ponds under different fish size and density conditions

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