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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 new assessment of the costs required to bring invasive alien plants under control in the protected area network of the Cape Floristic Region

A new assessment of the costs required to bring invasive alien plants under control in the protected area network of the Cape Floristic Region
Brian W. van Wilgen1, Jennifer M. FILL1, Johan A. Baard2, Chad Cheney3, Aurelia T. Forsyth4, Tineke Kraaij5
1Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Private Bag x1, Matieland, 7602, South Africa
2South African National Parks, Garden Route Scientific Services, P.O. Box 3542, Knysna, 6570, South Africa
3South African National Parks, Table Mountain National Park, P.O. Box 37, Constantia 7848, South Africa
4CapeNature, Scientific Services, Private Bag X5014, Stellenbosch, 7599, South Africa
5Nelson Mandela Metropolitan University, School of Natural Resource Management-Nature Conservation, Private Bag X6531, George, 6530, South Africa

Fynbos vegetation is relatively well represented in protected areas of the Cape Floristic Region. However, these protected areas are under serious threat from invasive alien plants, especially woody genera such as Pinus, Hakea and Acacia. Although a large amount of money is being spent on control in these areas, there are concerns that current approaches are failing to reduce the problem. To find effective solutions, it is necessary to more accurately estimate the extent of the problem within protected areas, and the effectiveness of current control operations. This paper outlines a joint initiative by the Centre for Invasion Biology, SANParks and CapeNature to assess the situation in a comprehensive manner, and to suggest changes to current approaches that will be needed to secure the conservation of this unique ecosystem within a network of protected areas. The objectives of this paper include (i) an assessment of the magnitude of the invasive alien plant problem in fynbos protected areas; (ii) an estimation of resources needed to bring the problem under control; (iii) formulation of best management practices; (iv) an assessment of current practice against best practices; and (v) recommendations to improve future implementation of control programmes. We present data on the first two objectives, based on alien plant distribution mapping by CapeNature and SANParks, and cost estimates derived from Working for Water’s norms and standards of invasive alien plant clearing. We suggest that the current state of invasion and the projected future costs call for strategic management and allocation of resources.

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


During the past five years (2014-2018), ISSA invasive species trainers have trained 4 000 in the identification of invasive species and laws pertaining to invasive species across South Africa.  ... Read more

Alien Grass Working Group


Who are we? The South African National Alien Grass Working Group was jointly initiated by the South African Biodiversity Institute (SANBI) and the Centre for Excellence in Invasion Biology (C·I·B) in... Read more

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

Invasive species training 2018 dates released


Interested in invasive species?  How much do you know about NEMBA invasive species compliance for landowners and organs of state? The South African Green Industries Council (SAGIC) have released... Read more

Communications post for Africa advertised


The Nature Conservancy has advertised a brand new post:  Communications Manager, Africa Region. Knowledge of invasive species and water would be an asset in this post. See details below:    Job Titl... Read more