Physiological adaptation in savanna ungulates

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منابع مشابه

Physiological adaptation in savanna ungulates.

Savannas lie between the equatorial rain forests and the semi-deserts of the southern continents. From the herbivore’s viewpoint, the savanna environment is characterized by a mixture of herbaceous and woody vegetation, varying in quantity and growth stage according to the seasonal cycle of rainfall. C4 grasses (i.e. those with the C4 photosynthetic pathway) dominate the herbaceous layer, which...

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Herbaceous Forage and Selection Patterns by Ungulates across Varying Herbivore Assemblages in a South African Savanna

Herbivores generally have strong structural and compositional effects on vegetation, which in turn determines the plant forage species available. We investigated how selected large mammalian herbivore assemblages use and alter herbaceous vegetation structure and composition in a southern African savanna in and adjacent to the Kruger National Park, South Africa. We compared mixed and mono-specif...

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On the carrying capacity for large ungulates of African savanna ecosystems.

The effect of pastoral management on the standing crop biomass of large ungulates, an index of carrying capacity, is analysed at a regional level by using data compiled from published sources covering east and south Africa. The effect of primary production is controlled for by using two environmental factors, rainfall and soil nutrient availability, and the effect of species richness of the ung...

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Consequences of herbivory by native ungulates for the reproduction of a savanna tree

1 Herbivores may negatively impact plant populations by reducing the survival, growth and reproduction of individual plants. 2 In African savannas, browsing by large mammalian herbivores has been shown repeatedly to reduce adult survival and growth of members of the genus Acacia , the dominant trees in these systems. However, the potential costs of mammalian herbivory to Acacia reproduction are...

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Diets of savanna ungulates from stable carbon isotope composition of faeces

Hypotheses to explain diversity among African ungulates focus largely on niche separation along a browser/grazer continuum. However, a number of studies advocate that the browser/grazer distinction insufficiently describes the full extent of dietary variation that occurs within and between taxa. Disparate classification schemes exist because of a lack of uniform and reliable data for many taxa,...

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ژورنال

عنوان ژورنال: Proceedings of the Nutrition Society

سال: 1997

ISSN: 0029-6651,1475-2719

DOI: 10.1079/pns19970108