Navigation Links
Are we pushing animals over the edge?
Date:6/19/2013

Species of mammals and birds are threatened with extinction as a result of rising human population density, according to Jeffrey McKee and colleagues from The Ohio State University in the US. Their work is also the first to show that the exponential growth of the human population will continue to pose a threat to other species. In other words, there does not appear to be a threshold above which population growth would cease to have an incremental negative effect. The study is published online in Springer's journal, Human Ecology.

It has long been suspected that the number of threatened species today could be linked to the size, density and growth of the human population. McKee and team set out to prove a causal link between human population density and threats to species of mammals and birds that can be quantified, not only at present, but as the human population grows.

To both validate their hypothesis and make projections about future effects of population growth on threatened species, the researchers used US Census Bureau data from 2000, 2010 and projected population sizes for 2020 and 2050, for 114 countries. At the same time, they compiled data on threatened mammal and bird species from the IUCN Red List of Threatened Species*.

They found that changes in human population density had measurable consequences on changes in the number of threatened species by nation. The average nation with a growing population can expect a 3.3 percent increase in the number of threatened mammals and birds over the next decade, and a 10.8 percent increase by 2050, based on human population growth alone.

No apparent threshold effect to reduce further risks to biodiversity was identified, suggesting that future conservation efforts should take human population density into account at the outset. Conservation efforts could be focused in countries in which human population is decreasing. Such areas could be targeted for wild land reclamation and reconstitution of other native species that remain threatened.

The authors conclude: "There is no doubt that a multitude of factors go into diminishing the availability of resources that mammals and birds need to survive as viable species. Our results demonstrate that human population density is at the core of extinction threats to both mammals and birds."


'/>"/>

Contact: Joan Robinson
joan.robinson@springer.com
49-622-148-78130
Springer
Source:Eurekalert

Related biology news :

1. UT Dallas researchers pushing the boundaries of virtual reality
2. Droughts are pushing trees to the limit
3. Climate change will cause widespread global-scale loss of common plants and animals
4. Decline in snow cover spells trouble for many plants, animals
5. Rescue me: New study finds animals do recover from neglect
6. New test for skin sensitization without using animals
7. Biodiversity does not reduce transmission of disease from animals to humans
8. Discovery may explain how prion diseases spread between different types of animals
9. Scientists discover how animals taste, and avoid, high salt concentrations
10. Hastings Center resources chart progress in debate over medical research with animals
11. Environmental factors determine whether immigrants are accepted by cooperatively breeding animals
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/13/2017)... 2017 According to a new market research report ... Identity Administration, and Authorization), Service, Authentication Type, Deployment Mode, Vertical, and Region ... expected to grow from USD 14.30 Billion in 2017 to USD 31.75 ... ... MarketsandMarkets Logo ...
(Date:4/11/2017)... Research and Markets has announced the addition ... their offering. ... tracking market to grow at a CAGR of 30.37% during the ... 2017-2021, has been prepared based on an in-depth market analysis with ... its growth prospects over the coming years. The report also includes ...
(Date:4/11/2017)... -- NXT-ID, Inc. (NASDAQ:   NXTD ) ("NXT-ID" ... of independent Directors Mr. Robin D. Richards and ... furthering the company,s corporate governance and expertise. ... Gino Pereira , Chief Executive Officer ... guidance and benefiting from their considerable expertise as we move ...
Breaking Biology News(10 mins):
(Date:10/9/2017)... ... October 09, 2017 , ... The award-winning American Farmer ... first quarter 2018. American Farmer airs Tuesdays at 8:30aET on RFD-TV. , With ... with the challenge of how to continue to feed a growing nation. At the ...
(Date:10/9/2017)... ... October 09, 2017 , ... ... in the medical journal, Epilepsia, Brain Sentinel’s SPEAC® System which uses the ... in detecting generalized tonic-clonic seizures (GTCS) using surface electromyography (sEMG). The prospective ...
(Date:10/7/2017)... , Oct. 6, 2017  The 2017 Nobel ... three scientists, Jacques Dubochet, Joachim Frank ... in cryo-electron microscopy (cryo-EM) have helped ... the structural biology community. The winners worked with ... now routinely produce highly resolved, three-dimensional images of ...
(Date:10/5/2017)... YORBA LINDA, CA (PRWEB) , ... October 05, 2017 , ... ... tech innovators, engineers, and scientists from around the world, is giving back to cancer ... shirt sold in October. , Now through October 31, shoppers can use promo ...
Breaking Biology Technology: