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Accueil du site → Doctorat → Australie → 2002 → A comparison of the effects of grazing and mining on vegetation of selected parts of northern South Australia

University of Adelaide (2002)

A comparison of the effects of grazing and mining on vegetation of selected parts of northern South Australia

Badman, Francis John

Titre : A comparison of the effects of grazing and mining on vegetation of selected parts of northern South Australia

Auteur : Badman, Francis John

Grade : PhD 2002.

Université de soutenance : University of Adelaide,

Résumé
This thesis examines the effects on vegetation at selected sites in northern South Australia of excluding various herbivores over a four and a half year period and of two intense but controlled grazing pulses over a six month period followed by an 18 month recovery period in a dune-swale land system. These changes are compared with changes recorded over an 11-year period at the Olympic Dam mine site. It found that short-term changes in vegetation revealed by ordination of periodical cover, density and species richness, are attributable to the periodicity of rainfall and that, under present grazing regimes, rainfall effects override grazing effects. Differences between the effects of sheep and cattle hoof damage are worthy of further investigation, as is the impact of kangaroo grazing. These two factors may have important implications for the management of Australian rangelands.

Mots clés : Range ecology South Australia Far North Region • Arid regions ecology South Australia Far North Region • Vegetation and climate South Australia Far North Region • Grazing Environmental aspects South Australia Far North Region • Rangelands South Australia Far North Region

Présentation (National Library of Australia)

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Page publiée le 8 mars 2007, mise à jour le 24 mai 2017