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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

Impacts of alien vegetation on animal diversity in South Africa: a synthesis

Impacts of alien vegetation on animal diversity in South Africa: a synthesis
Susana Clusella-Trullas1, Raquel A. Garcia1
1Centre for Invasion Biology, Dept Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa

Increasing numbers of invasive alien plant (IAP) species are establishing around the globe and can have negative effects on resident species diversity. These impacts depend on a variety of factors, including the extent of the plant invasion, the region and taxonomic group affected. These context dependencies make extrapolations of the effects of IAPs on resident biota from region to region a substantial challenge.

Here, we aim to synthesize studies that have examined the effects of IAPs on animal diversity in South Africa. We focus on ectothermic organisms (reptiles, amphibians and arthropods) as the environment more directly influences their energy budgets, they generally have smaller dispersal distances than mammals and birds, and they make a large contribution to overall animal diversity. Relevant articles were sourced using a combination of key words relating to i. the effects of IAPs on species diversity (richness, abundance and composition), ii. the invasive plant and iii. the native ectotherm. We also extracted information on mechanisms driving the impacts such as changes in habitat structure, thermal opportunities, prey and predator data, and refuge/nest site availability and explore if these are related to the growth form, stand age and spatial coverage of the IAP. 

Read 3048 times Last modified on Tuesday, 03 May 2016 12:22

General News Updates

2019 National Symposium on Biological Invasio…

26-02-2019

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

22-01-2019

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

04-09-2018

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?

01-03-2018

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

28-02-2018

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

25-01-2018

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