EXPERT REACTION: More than 500 species on the brink of extinction
Human activity in biodiversity hot-spots has brought more than 500 vertebrate species to the brink of extinction, according to international researchers who say the world is experiencing its sixth mass extinction, which harms ecosystem function and endangers human wellbeing. The researchers looked at 29,400 species on the Red List of Threatened Species and from Birdlife International and found that 1.7 per cent, or 515 of them, are on the brink of extinction. They also say 84 per cent of the 388 terrestrial vertebrate species that have fewer than 5,000 remaining individuals are located in the same geographical regions as species on the brink and may therefore soon face a similar risk due to the human-driven collapse of regional biodiversity. Additional analyses suggest that terrestrial vertebrate species on the brink have collectively lost approximately 237,000 populations since 1900. According to the authors, the findings underscore the need for global action to prevent further loss of terrestrial vertebrate species. Below Australian experts comment on the research.
Journal/conference: PNAS
Link to research (DOI): 10.1073/pnas.1922686117
Organisation/s: Australian Science Media Centre, Griffith University, James Cook University, University of Tasmania, Deakin University, Monash University, Charles Darwin University, Instituto de Ecología
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Expert Reaction
These comments have been collated by the Science Media Centre to provide a variety of expert perspectives on this issue. Feel free to use these quotes in your stories. Views expressed are the personal opinions of the experts named. They do not represent the views of the SMC or any other organisation unless specifically stated.
Professor Chris Johnson is a Professor of Wildlife Conservation & ARC Australian Professorial Fellow in the School of Zoology at the University of Tasmania