Nevertheless, this proportion remains alarming and confirms the importance of taking urgent measures to mitigate climate change and its impact on biodiversity., reassesses the proportion of terrestrial and marine species threatened with extinction by climate change. While the forecasts of traditional models estimate that the diversity of terrestrial species in tropical areas could decrease by 54% between now and 2041-2060, this model is more moderate, predicting a decrease of 39%.
When a species is 'marked' by climatic conditions, it retains a pre-adaptation to these conditions that can last for thousands or even millions of years. If its habitat evolves towards a climate that the species has already experienced in the past, this pre-adaptation will provide it with a tolerance to these new climatic conditions," adds Antoine Guisan, professor of spatial ecology at the University of Lausanne.
Does that mean this is good news? Clearly not. Scientists are advising us to remain prudent: this estimate of threatened biodiversity remains alarming, and climate is not the only variable to take into account for a realistic prediction of species extinction risk. We also need to consider other anthropogenic pressures, such as habitat loss, pollution, overexploitation or biological invasions.
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