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Résultats de la recherche (5 résultats)

Analyse démographique appliquée aux feuilles de quatre espèces de Graminées de savane (Côte-d'Ivoire)

Thanks to a marking method in natural conditions, which is described, a demographic analysis is made in Ouango-Fitini savannas (401 W, 935 N) for the leaves populations of four Grasses species. The provided data are: survival curves and life

L'albatros fuligineux à dos sombre Phoebetria fusca, exemple de stratégie d'adaptation extrême à la vie pélagique

biology of the species is described. The seasonal distribution and demographic structure of the Possession Island's population is described. As an extreme K-strategist, the Sooty Albatross appears to be remarkably adapted to exploit the pelagic resources

Allocation des ressources et effort de reproduction: le cas des lézards

patterns in lizards. The demographic component of the reproductive effort (i.e. whether the energy is allocated to a few or many offspring), and the relationships between reproductive strategies and environmental and genetic factors, are also considered.

Survie en milieu insulaire: quelle stratégie? Le cas des mésanges en Corse

in southern France, Corsican tits do not apparently breed at the time of maximum food abundance. The demographic strategies of the Corsican populations of Blue and Coal tits are apparently K-selected.

Influence sélective de la prédation sur la structure et la dynamique du zooplancton d'eau douce

of each of the two guilds. These strategies occur at three different levels of organization: individual (escaping notice), demographic i. e. population level (cyclomorphosis, polymorphism, migration etc.) and biocenotic (restructuring).