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sur le développement des zones arides et semi-arides

Accueil du site → Doctorat → Royaume-Uni → 1993 → Behaviour and land usage of water dependent herbivores in arid grasslands

University of Oxford (1993)

Behaviour and land usage of water dependent herbivores in arid grasslands

Ritter, Ron

Titre : Behaviour and land usage of water dependent herbivores in arid grasslands.

Auteur : Ritter, Ron.

Université de soutenance : University of Oxford

Grade : Doctor of Philosophy (Ph.D.) : 1993

Résumé
African savannas hold magnificently robust and diverse large mammal communities in their seemingly endless grasslands, rivers, swamps, salt pans and woodlands. The size and diversity of the animals have been a persistent attraction to field biologists. In recent years, research has become increasingly sophisticated, benefitting considerably from new technology which has raised both the quantity and quality of work. The ever worsening conservation status of the region has added a tragic, but powerful motivation. The physical savanna environment presents equally fascinating challenges to plant and animal species alike. The change from moist, relatively aseasonal rainforests to seasonally arid, open country was a dramatic evolutionary step for ungulates, carnivores and our own ancestors. In exchange for humid, closed-canopy forest, herbivores faced expanses of grass, few trees and restricted surface water. Understanding how they have adapted to this environmental will keep biologists occupied for many years to come. This project is one small part of that process.(D178566)

Annonce (EThOS)

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Page publiée le 26 mai 2009, mise à jour le 19 novembre 2018