How network theory can help understand and predict biological invasions

Understanding and predicting biological invasions is challenging because of the large number and complexity of interacting players. A recent study by a team of international researchers, including former C·I·B post-doctoral associate Wolf-Christian Saul, reviews the findings from network ecology...

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Read more about the article Mexican sunflowers are harmful to rural African farmers
Mexican sunflowers (Tithonia diversifolia) are invasive species that are widely distributed across southern and eastern Africa, where they impact negatively on rural livelihoods and biodiversity. (Photo credit: Greg Forsyth)

Mexican sunflowers are harmful to rural African farmers

Mexican sunflowers (Tithonia species) are promoted as a green manure, but a survey of rural farmers revealed that these species are invasive, and have substantial negative impacts in addition to their benefits.

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Wrapping yachts — the answer to dealing to heavily fouled vessels that have foreign species on them?

Many marine organisms move around the world on the bottom of ships and yachts. This living layer is commonly referred to as hull fouling. Unfortunately, hull fouling not only increases both the drag and fuel consumption of vessels, but is also one of the major contributors to the introduction and spread of invasive species.

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Read more about the article Tall-statured grasses provide an important functional group for invasion research
Tall-statured grasses (TSGs) come in various forms and occur in a range of different ecosystems (e.g. temperate forests, dry grasslands to tropical wetlands). They are useful to humans for food (A and B), ornamental horticulture (C and D), for the production of biofuels (E and F) and other uses (G and H). Several TSGs are associated with environmental impacts in invaded ranges due to their ability to form monospecific stands that exclude other vegetation types (D, F, G and H). Photographs by: Wikimedia Commons (A: Christian Fischer (CC BY-SA 3.0 & CC0); B: Wouter Hagens (CC BY-SA 3.0); E: Bgabrielle (CC-BY-SA- 3.0); F: Daderot (CC0)) and other sources (C: Kijktuinen Nunspeet -http://www.kijktuinen.nl); D: Susan Canavan; G: retrieved from Rossiter-Rachor et al. 2009; H: Michigan Technological University).

Tall-statured grasses provide an important functional group for invasion research

Tall-statured grasses often have generalisable impacts related to their ability to produce and accumulate a large amount of biomass. The idea of tall-statured grasses as being a useful functional group for invasion science was explored in a recent article published in Biological Invasions.

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Read more about the article The dominance-diversity relationship in ants
Plot showing the relationship between species richness and the abundance of dominant ants. The red line shows the decline in local species richness when invasive dominants are present, the orange line shows the pattern when only native dominants are present.

The dominance-diversity relationship in ants

A recent study by a team of international researchers, including former C·I·B post-doctoral associate, Tom Bishop, has shown that invasive dominant ant species have different effects on the diversity of the wider ant community than native dominant species.

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