Indeed, average extinction rates observed during 1971–2000 suggest that, about 6.9% of anuran species may be lost within the next century (Materials and Methods). This rate may seem slow on a human ...

Amphibians seem particularly sensitive to environmental change, with estimated extinction rates up to 45,000 times their natural speed. Most of these extinctions are unrecorded, so we do not even ...

Extinctions during human era one thousand times more than before Date: September 2, 2014 Source: Brown University Summary: The gravity of the world's current extinction rate becomes clearer upon ...

That generated much smaller extinction rates, suggesting the traditional method produces overestimates on the order of 40 to 160 per cent. "Those numbers are very questionable," He said.

Extinction rates are often measured with a metric called millions of species-years (MSY), or the estimated number of extinctions per 10,000 species per 100 years, for any given taxa in question. To ...

He says previous estimates of extinction rates from habitat loss can be divided by “roughly” 2.5. Article content “Clearly this is welcome news in the sense we have bought a little time for ...

Scientists estimate that the current extinction rate is about 1,000 times higher than the natural background rate. This means ...

The present extinction rate of life on Earth doesn't qualify as a mass extinction event yet — but current trends show that it eventually will, a new study finds.

But when the extinction rate jumps so high that more than 75% of the world’s species go extinct within the relatively short time frame of less than 2 million years, ...

What’s causing the sixth mass extinction? Unlike previous extinction events caused by natural phenomena, the sixth mass extinction is driven by human activity, primarily (though not limited to) the ...