Articles by Author: Aissa Regalla

Search results for Aissa Regalla

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  1. Ecology and behaviour of Palm-nut Vultures <em>Gypohierax angolensis</em> in the Bijagós Archipelago, Guinea-Bissau<xref ref-type="fn" rid="FN0001"/>

    Ecology and behaviour of Palm-nut Vultures <em>Gypohierax angolensis</em> in the Bijagós Archipelago, Guinea-Bissau<xref ref-type="fn" rid="FN0001"/>

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    Populations of many vulture species have undergone substantial declines. In Africa, 82% are threatened and although research on vultures has increased, the biology and ecology of several species is still poorly known. The Palm-nut Vulture Gypohierax angolensis has peculiar ecological...
  2. Status of birds of prey in Guinea-Bissau: first assessment based on road surveys<xref ref-type="fn" rid="F0000"/>

    Status of birds of prey in Guinea-Bissau: first assessment based on road surveys<xref ref-type="fn" rid="F0000"/>

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    Several studies have reported marked declines in populations of birds of prey across the African continent, including West Africa. However, there are still regions of which virtually nothing is known, as is the case for Guinea-Bissau. Because birds of prey...
  3. Nest-site characteristics and aspects of the breeding biology of the endangered Timneh Parrot <em>Psittacus timneh</em> in Guinea-Bissau

    Nest-site characteristics and aspects of the breeding biology of the endangered Timneh Parrot <em>Psittacus timneh</em> in Guinea-Bissau

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    Timneh Parrots Psittacus timneh are endemic to the moist forests of West Africa. Concerns over rapid declines in populations due to overharvesting for the pet trade and forest loss prompted the species’ categorisation as Endangered on the IUCN Red List...
  4. Endoparasites (helminths and coccidians) in the hedgehogs <em>Atelerix algirus</em> and <em>Paraechinus aethiopicus</em> from Algeria

    Endoparasites (helminths and coccidians) in the hedgehogs <em>Atelerix algirus</em> and <em>Paraechinus aethiopicus</em> from Algeria

    Item type: Journal Article • Journal: African Zoology
    The study of endoparasites (helminths and coccidians) in the Algerian (Atelerix algirus) and desert (Paraechinus aethiopicus) hedgehogs was performed between July 2008 and October 2009. The helminth species found included two cestodes, Mathevotaenia erinacei (Anoplocephalidae) and an unidentified cestode larva...
  5. Periphytic diatom communities in tributaries around Lake Ichkeul, northern Tunisia: a preliminary assessment

    Periphytic diatom communities in tributaries around Lake Ichkeul, northern Tunisia: a preliminary assessment

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    An initial inventory of diatom biodiversity at 12 sites draining into Lake Ichkeul, northern Tunisia, was performed in summer 2014, together with the characterisation of metal pollution status by analysing trace metal concentrations to determine Water Quality Indices. The maximum...
  6. Predatory pelagic fishes of the Bijagós Archipelago (Guinea-Bissau) show high overlap in diets dominated by sardinella

    Predatory pelagic fishes of the Bijagós Archipelago (Guinea-Bissau) show high overlap in diets dominated by sardinella

    Item type: Journal Article • Journal: African Journal of Marine Science
    Knowledge of trophic interactions between the key components of marine communities is required to understand food-web dynamics and develop ecosystem-based management approaches. In West Africa, where fisheries sustain the livelihoods of a significant part of the human population, this understanding...