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:3/2/2017)... Summary This report provides all ... and its partnering interests and activities since 2010. ... The Partnering Deals and Alliance since 2010 report provides ... of the world,s leading life sciences companies. ... ensure inclusion of the most up to date deal ...
(Date:2/28/2017)... 28, 2017   Acuant , a leading provider ... significant enhancements to new and core technologies building upon ... include mobile and desktop Acuant FRM TM facial ... a real time manual review of identity documents by ... the fastest and most accurate capture software to streamline ...
(Date:2/26/2017)... Feb. 25, 2017  Securus Technologies, a leading ... for public safety, investigation, corrections and monitoring, announces ... Reentry. "Too often, too many offenders ... county jails are trying to tackle this ongoing ... friends and family members. While significant steps are underway, ...
Breaking Biology News(10 mins):
(Date:3/24/2017)... 2017 MiMedx Group, Inc. (NASDAQ: MDXG), the ... tissue allografts and patent-protected processes to develop and market ... announced today  that it will present at the Needham ... NY.  Parker H. "Pete" Petit, Chairman and CEO, ... M. Cashman , EVP and Chief Commercialization Officer, and ...
(Date:3/24/2017)... VILLAGE, Calif. , March 24, 2017   ... dermatology and aesthetics company, today announced that Richard ... Officer, effective March 24.   Peterson, who brings ... succeed John Smither , who is retiring at ... Sienna in an advisory capacity. Peterson joins Sienna from ...
(Date:3/23/2017)... BETHESDA, Md. , March 23, 2017 /PRNewswire/ ... company developing DCVax® personalized immune therapies for solid ... on the $7.5 million financing it announced last ... Company sold to several institutional investors securities totaling ... $.26 per share, and 10,000,000 shares of Class ...
(Date:3/23/2017)... , March 23, 2017 Kineta, ... development of novel therapies in immuno-oncology, today announced ... lead" small molecule compounds that activate interferon response ... pathways and demonstrate immune-mediated tumor regression in a ... the study who demonstrated complete tumor regression to ...
Breaking Biology Technology: