Growth in human population could wipe out many species within 40 yrs
Washington: The global growth in the human population has the potential to threaten hundreds of species with extinction within 40 years, a new research has shown.
The Ohio State University scientists determined that the average growing nation should expect at least 3.3 percent more threatened species in next decade and an increase of 10.8 percent species threatened with extinction by 2050.
The research showed that the US is ranked 6th in the world in the number of new species expected to be threatened by 2050.
The lead researcher created a model based on 2000 data to forecast future threatened species connected to human population growth projections, and published the predictions in 2004.
In the new study, that model`s predictions were confirmed by 2010 actual figures. The scientists then used the same model, containing data on 114 countries, to extend their predictions to the middle of this century.
Jeffrey McKee , professor of anthropology at Ohio State and lead author of the study, said that the data speak loud and clear that not only human population density, but the growth of the human population, is still having an effect on extinction threats to other species.
He said that their projections are based on human population density alone and doesn`t take into account climate change, industrialization or wars, so the actual numbers that we predict for 2050 will be very different, as everything they do will only exacerbate the problem.
McKee collected data on threatened species from the International Union for Conservation of Nature Red List, and obtained human census data for 2000 and 2010 from the world database of the U.S. Census Bureau.
Overall species richness data came from the United Nations Environment Programme-World Conservation Monitoring Centre`s Animals of the World Database. He created a model using equations to analyze relationships among these variables.
After using 2010 data to confirm that the decade-old predictions came true, the researchers used the same equations to determine that between now and 2050, the nations that see the most population density growth will experience higher numbers of species facing new threats of extinction.
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