Read more about the article Invasive Australian acacias change fynbos soil functioning
Rooikrans (Acacia cyclops) was the dominant invader at the site near Vermaaklikheid on the Agulhas Plain, South Africa. (Photo: Suzaan Kritzinger-Klopper)

Invasive Australian acacias change fynbos soil functioning

Microbial communities of fynbos soils have not received as much attention as its aboveground components. This is especially true regarding the impacts of invasive plants on these communities. However, this has recently been explored in a study by C·I·B members.

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Read more about the article Unscrambling the egg: resolving the introduction history for Silver wattle
Silver wattle (Acacia dealbata) invading along a river in Chile. (Photo credit: A. Pauchard)

Unscrambling the egg: resolving the introduction history for Silver wattle

Researchers at the Centre for Invasion Biology (C·I·B) at Stellenbosch University, found that the introduction histories of the globally important invasive tree Silver wattle (Acacia dealbata) are complex and cannot be generalized.

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Read more about the article Using forestry trial data to evaluate species distribution models
An example of a successful forestry trial planting of Acacias in Vietnam (Photo credit: John Wilson)

Using forestry trial data to evaluate species distribution models

Predicting which introduced plants and animals are likely to become invasive is a key challenge for invasion biology. To help make these predictions, scientists use models that can predict the potential spread of introduced species.

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Read more about the article Scale-area curves: a viable tool for managing invasive species
Acacia elata and Acacia longifolia were the focus species for this study. (a) Acacia elata was introduced throughout South Africa as an ornamental garden plant and has become invasive in areas close to suburban hotspots. (b) Acacia longifolia was introduced for dune stabilization along coastal mobile dune systems and has since spread from those original plantings.

Scale-area curves: a viable tool for managing invasive species

Scale-area curves have been used in conservation science as an affordable means of identifying shrinking populations that need protection. Invasions are the result of populations of invasive species that are spreading and becoming dominant in areas to which they have been introduced.

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