German wasp | Vespula germanica

German wasp

Vespula germanica

Coral bush | Ardisia crenata

Coral bush

Ardisia crenata

Purple loosestrife | Lythrum salicaria

Purple loosestrife

Lythrum salicaria

Pom pom weed | Campuloclinium macrocephalum

Pom pom weed

Campuloclinium macrocephalum

Canarybird bush | Crotalaria agatiflora

Canarybird bush

Crotalaria agatiflora

Peanut butter cassia | Senna didymobotrya

Peanut butter cassia

Senna didymobotrya

Rubber vine | Cryptostegia grandiflora

Rubber vine

Cryptostegia grandiflora

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Environmental Programmes

In order to tackle our country’s socio-economic challenges, the government adopted the Outcomes based approach to improve government performance and providing focus on service delivery. find out more

Modelling and managing alien species in the sub-Antarctic

Peter C le Roux-University of Pretoria, Department of Plant Science
Sub-Antarctic islands provide valuable natural laboratories for the study of invasion biology in relatively simple ecosystems due to their low indigenous species richness and limited anthropogenic transformation.

Reducing the rate of new species and managing established aliens is a conservation priority in the region due to the serious ecological impacts of some invasive species on these islands.

This presentation highlights three key research projects conducted on sub-Antartic Marion Island, considering the lessons learnt for the management of alien species elsewhere.

(1)The successful eradication of feral cats, a species which heavily impacted on the island’s seabird population with knock-on effects on vegetation patterns.

(11) The island wide surveying and modelling of alien vascular plant species distributions, which revealed species specific drivers of distribution patterns and the potential consequences of current warming trends.

(111)The quantification of pressure associated with a national scientific research programme, and the implications thereof for the programme’s logistics.

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Media

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