Species richness

2020 / Highlighted papers

The invasion continues: Alien species expected to increase by 36% until 2050

Compared to the year 2005, the number of alien species is expected to increase by 36% by the middle of this century. The majority of these newcomers are insects. These are the results of a study by an international team of researchers led by Dr Hanno Seebens of the Senckenberg Biodiversity and Climate Research Center in Germany.

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5 October 2020
Read more about the article Sour fig changes invertebrate diversity in the invasive range, C·I·B study shows
Carpobrotus edulis, native to South Africa, is invasive in the coastal areas of the Iberian Peninsula (Galicia, Spain). (Photo credit: Jonatan Rodríguez)
2020 / News

Sour fig changes invertebrate diversity in the invasive range, C·I·B study shows

The invasive plant sour fig (Carpobrotus edulis: also known as Hottentot-fig, ice plant, highway ice plant, or pigface) can have a clear impact reducing the abundance of native invertebrates, with substantial effects on herbivores.

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26 May 2020
2019 / News

How many alien species would we expect to find in an area?

A key question in invasion biology is why some regions have more alien species than others. This is likely to depend on features of the local environment, but how humans influence the invasion process is likely to matter as well.

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7 June 2019
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.
2018 / News

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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7 August 2018
Read more about the article Getting a handle on biological invasions around the world — the species, the impacts and the responses
Examples of Critically Endangered birds threatened by IAS include (from left to right): the Juan Fernández Firecrown (Sephanoides fernandensis) threatened by a range of introduced plant and animal IAS on Isla Robinson Crusoe, Juan Fernÿndez Islands, Chile (Credit: Rare Birds Yearbook/Peter Hodum); the Polynesian Ground-dove (Gallicolumba erythroptera) threatened by cats and rats on islands in French Polynesia (Credit: Rare Birds Yearbook/Pete Morris); the Akohekohe (Palmeria dolei), threatened by introduced disease-carrying mosquitoes on Maui, Hawaii (Credit: Rare Birds Yearbook/Aaron French). (Cover design: K. Coombe-Davis).
2010 / Highlighted papers

Getting a handle on biological invasions around the world — the species, the impacts and the responses

Invasive alien species are generally accepted as being one of the top three threats to biodiversity worldwide, but until now there has been no metric for assessing the magnitude problem globally, its impact and our responses to it.

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5 February 2010