1/11/2024 0 Comments Fishing planet challenge list“Collectively, our findings reinforce the warning that biodiversity is on the brink of an extinction crisis,” the authors point out in their study, noting that this extinction event will be far more serious than prior research has suggested, particularly as entire ecosystems unravel and collapse. Declines are steeper amongst animals living in the tropics compared to temperate region species, probably because tropical species tend to be more sensitive to change. For example, the team found that amphibians are experiencing the greatest population drops of any animal classes. They also found evidence that 33% of species currently classified as “least concern” (not threatened) on the IUCN’s Red List are actually trending toward extinction.Īdditionally, the researchers found that some taxonomic classes of animals are experiencing greater threats to their continued existence than others. However, the study authors noted that extinctions are preceded by progressive population declines through time that leave demographic “footprints” warning of impending extinctions - and this downward population trajectory is what the researchers analyzed.Īccording to the team’s analysis, 49% of these species populations are stable, but 48% have shrinking populations, whilst only 3% have populations that are increasing (Figure 1). Of the population numbers and extinction risks for more than 150,300 species evaluated by the IUCN, 28% are considered to be facing the threat of extinction, and approximately 1% have been declared extinct. Gauging a species’ conservation status has traditionally been based on assessments issued by the International Union for Conservation of Nature ( IUCN).
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