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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

Pine invasions in protected areas Featured

Protected areas (PAs) are a key intervention for conserving biodiversity and ecosystem services. A major challenge for PAs is the control of invasive alien plants that spread into PAs from surrounding areas such as forestry plantations. The links between invasions and different plantation sources are poorly understood, making it difficult to assign responsibilities for control costs.

To address this issue, Centre for Invasion Biology (C.I.B) post-doctoral associate Matthew McConnachie and co-workers, used a new quasi-experimental method to estimate the effect of plantations of invasive pines (Pinus species) on the spread of these trees into PAs in the Cape Floristic Region.

They found that 51% of PA pine invasions were caused by nearby plantations. Costs of controlling invasive pines in the study area totalled 98 million Rand between 2001 and 2012. It could cost between 273 and 916 million Rand, and take between 34 and 113 years, to clear the remaining pines in the study area, depending on rates of spread and cost-effectiveness of control. The results, published in the Journal of Applied Ecology, provide a starting point for estimating the contribution of plantation forestry to invasions in protected areas in the Cape Floristic Region.

To find out more about this research, click here.

The NEMBA Alien and Invasive Species regulations, published on 1 August 2014, list 8 species of pines as invasive, with provisions on where and how they are to be managed. To access the regulations, click here.

Read 5857 times Last modified on Wednesday, 07 October 2015 12:30

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