Navigation Links
Global map shows new patterns of extinction risk

The most detailed world map of mammals, birds and amphibians ever produced shows that endangered species from these groups do not inhabit the same geographical areas, says new research published today.

Contrary to conservationists' previous assumptions, the map shows conclusively that geographical areas with a high concentration of endangered species from one group, do not necessarily have high numbers from the others. This new finding has far-reaching implications for conservation planning by governments and NGOs, and their decisions about where to focus conservation spending. These decisions have typically been based on the assumption that investing in an area known to have a high concentration of endangered birds, for example, will mean that large numbers of endangered mammal and amphibian species will also be protected. The new study shows that basing conservation decisions on just one type of animal can be very misleading.

The study, out in today's issue of Nature, is the culmination of many decades of work by field biologists and analysts, during which the planet was divided up into 100km x 100km grids, and all mammal, bird and amphibian species within each grid square were counted, using a variety of pre-existing, but never-before combined, records. The result is a comprehensive worldwide map of all species in these groups, on a finer scale than ever before.

Professor Ian Owens, one of the paper's authors from Imperial College London's Division of Biology, and the Natural Environment Research Council's Centre for Population Biology, said: "For the first time ever this global mapping has divided the planet up into small grid squares to obtain a really detailed picture of biodiversity. By looking at the numbers of endangered mammals, birds and amphibians in these squares, we have been able to see how this real picture varies from assumptions that have previously been made about global biodiversity of endangered species."

P rofessor Owens adds that this geographical discrepancy in hotspots of endangered species from different groups can be explained by the different factors that threaten mammals, birds and amphibians: "Endangered bird species are often at risk because their habitats are being destroyed. However, different factors entirely may affect mammals such as tigers which are under threat from poachers, and amphibians which are being diminished by diseases brought into their habitat by non-native fish.

"This means that even if a mountainous area has a real problem with endangered amphibians in its creeks and rivers, mammal and bird species in the same area might be flourishing. It's really important not to assume that there are simply a number of hotspots across the globe where everything living there is endangered ?the picture is far more complicated, with mammal, bird and amphibian numbers being threatened by different things, in different locations."

Examples of geographical locations in which the distribution of endangered species is different include:

  • New Zealand is a hot spot for threatened birds because of the danger posed by introduced rats and cats.
  • Mammals are highly threatened across eastern Africa due to hunting and the bush meat trade
  • The tropical, rainforest-clad mountains of northern Australia are home to many declining frog species, although the precise causes of these declines often remain enigmatic.

'"/>

Source:Imperial College London


Related biology news :

1. Global analysis of membrane proteins
2. Global warming increases oyster sensitivity to pollution
3. Grand Challenges in Global Health initiative funds Yale project
4. Global study shows all tobacco bad for the heart
5. Global warming may warrant new approaches to ecosystem restoration
6. Global warming may have damaged coral reefs forever
7. Global malaria map key weapon in fight against malaria, scientists say
8. Global changes alter the timing of plant growth, scientists say
9. Global sunscreen has likely thinned, report NASA scientists
10. Global survey of lizards reveals greater abundance of animals on islands than on mainland ecosystems
11. Genome of deadly amoeba shows surprising complexity, evidence of lateral gene transfer
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:12/8/2016)... , Dec. 8, 2016 Market Research Future published ... Market. The global Mobile Biometric Security and Service Market is expected ... to 2022. Market Highlights: ... , , Mobile Biometric ... due to the increasing need of authentication and security from unwanted ...
(Date:12/7/2016)... 2016 BioCatch , the global leader in ... portfolio, which grew to over 40 granted and pending patents. ... , , The ... " System, Device, and Method Estimating Force Applied to a ... to forego costly hardware components needed to estimate the force and pressure ...
(Date:12/6/2016)... -- Zimmer Biomet Holdings, Inc. (NYSE and SIX: ZBH) (the "Company") ... million principal amount of its 1.414% senior unsecured notes due ... unsecured notes due 2026. The closing of ... to the satisfaction of customary closing conditions.  The notes will ... The Company intends to use the net proceeds from ...
Breaking Biology News(10 mins):
(Date:1/12/2017)... Pune, India , January 12, 2017 A new ... Type and End Users - Global Opportunity Analysis and Industry Forecast, 2014-2022," projects that ... $2,921 million in 2015, growing at a CAGR of 15.07% during the forecast period. ... ... Market Research Logo ...
(Date:1/11/2017)... ... January 11, 2017 , ... ... urban clinics in Peru studying the pathogens that cause malaria and tuberculosis. Seeing ... career path of discovery. , Now, as an assistant professor of biology and ...
(Date:1/11/2017)... ... January 11, 2017 , ... ... grants to ground-breaking microbiome studies. Its most recent microbiome impact grant award has ... will study the effect of long-term use of oral antibiotics, prescribed for skin ...
(Date:1/11/2017)... ... January 11, 2017 , ... Advanced Polymer ... its team. Bernhard Bartylla will lead European initiatives for APMT’s product lines serving ... ACOMP and ARGEN to European manufacturers and researchers. Bernhard brings significant experience in ...
Breaking Biology Technology: