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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

A review of the current legal status and management options for invasive fishes in South Africa

A review of the current legal status and management options for invasive fishes in South Africa
Darragh J. WOODFORD1, Philip Ivey2, Olaf L.F. Weyl3, Martine Jordaan4, Tsungai A. Zengeya5
1University of the Witwatersrand
2Invasive Species Programme, South African National Biodiversity Institute
3South African Institute for Aquatic Biodiversity
5South African National Biodiversity Institute, Pretoria National Botanical Gardens

South Africa has a long history of non-native fish introductions, and continues to see new introductions as well as range-expansions within its borders. The historical response of government and conservation agencies to this biodiversity threat has been negligible, with few successes. The Alien and Invasive Species (A&IS) Regulations of the National Environmental Management: Biodiversity Act, are meant to set the legal framework under which invasive fishes can be managed in South Africa, although there are several complications to assessing or enforcing compliance with the new legislation.

A chief aspect of invasive fishes is that many were introduced for, and continue to provide, recreational and subsistence fisheries in South Africa. This means that any management action taken under NEM:BA has to take the local socio-economic value of an invasive species into account, particularly as many species are legally entitled to remain within their current distribution under the A&IS regulations. Furthermore, two invasive species, rainbow trout and brown trout, are currently excluded from the AIS lists and are being managed under a separate process involving the mapping of “trout areas”.

In this paper, we discuss the current implications of the A&IS regulations for conservation management, and assess the value of a recently-developed decision support tool for managing invasive fishes. We employ the tool in three case studies to demonstrate how current legislation, the practical limitations for control, and socio-economic impact of a particular invasive fish population can be used to determine a reasonable management goal for that population. 

Read 3095 times Last modified on Tuesday, 03 May 2016 12:20

General News Updates

2019 National Symposium on Biological Invasio…


This is your invitation to South Africa's 2019 National Symposium on Biological Invasions. The convention is hosted by the Centre for Invasion Biology (CIB), University of Stellenbosch, and the Biolo... Read more

2019 Invasive Species Training


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Alien Grass Working Group


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Permits for planting indigenous Cynodon?


On 16 February, 2018, South Africa's Department of Environmental Affairs issued amendments to the regulations and lists relating to the National List of Invasive Species.  Updates to the draft&n... Read more

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