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Mass extinctions ‘lead to disaster faunas’
One of the most common animals at the end of the Permian was Lystrosaurus.

Study may offer insights into future changes to biological communities

New research suggests mass extinctions have predictable outcomes for animal distributions, and could potentially guide our modern conservation efforts.

International scientists found that mass extinctions in the late Permian to early Jurassic periods, were followed by periods of low diversity, in which certain new species dominated large parts of the supercontinent, Pangaea.

The findings have been published in Nature Communications.

It has previously been thought that mass extinctions create ‘disaster faunas’, but studies had been rare and limited in scope.

Researchers involved in the present study looked at long-term changes in biodiversity in Pangaea. They analysed nearly 900 animal species between 260 million and 175 million years ago. The period saw two mass extinctions and the origin of dinosaurs and many modern vertebrate groups.

The end-Permian extinction wiped out many groups that dominated life on land and allowed new groups to evolve. This included the earliest dinosaurs, crocodiles and relatives of mammals and lizards. The end-Triassic extinction then wiped out many major groups, which helped to ‘set the stage’ for dinosaurs to take over.

David Button, of North Carolina State University, explained: “These results show that, after both mass extinctions, biological communities not only lost a large number of species, but also became dominated by widespread, newly-evolving species, leading to low diversity across the globe.

“These common patterns suggest that mass extinctions have predictable influences on animal distributions and may have the potential to guide modern conservation efforts.”

We are currently in the sixth mass extinction due to human activity. Already, there are concerns that global faunas are becoming more homogenous due to landscape simplification, rising temperatures and the introduction of exotic species. Researchers say their findings highlight another risk factor - ongoing biodiversity loss is expected to result in a ‘disaster fauna’ of more similar species worldwide.

Image © Victor O. Leshyk, website: victorleshyk.com

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Giraffe Conservation Foundation named BVNA’s charity of the year

News Story 1
 BVNA president Wendy Nevins has named The Giraffe Conservation Foundation as the association’s charity of the year for 2017/2018.

The Giraffe Conservation Foundation dedicates its work to a sustainable future for wild giraffe populations. Wendy Nevins said: ‘I have chosen the Giraffe Conservation Foundation for the BVNA Charity of the Year because I have always thought Giraffes were magnificent animals.

‘I also think it is important that we look at the wider issue of conservation and education across all species.’  

News Shorts
Scientists win award for openness in animal research

UK scientists have won an award for the 360º Laboratory Animal Tours project, which offered the public an online, interactive tour of four research facilities that are usually restricted access.

The project won a public engagement award at the Understanding Animal Research (UAR) Openness Awards, which recognise UK research facilities for transparency on their use of animals in research, as well as innovation in communicating with the public.

The tour was created by the Pirbright Institute, the University of Oxford, the University of Bristol and MRC Harwell Institute.