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"Different weightings area unit applied between regions, and between marine, terrestrial and fresh environments. we have a tendency to area unit merely being additional refined with the method we have a tendency to use the info."

"Applying the new methodology to the 2008 dataset we discover that things we have a tendency tore significantly worse than what we thought at the time. it's clear that we have a tendency to area unit seeing a big semipermanent trend in declining species population

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A ZSL spokesperson explained to BBC News: "For example, if most measurements in a very explicit region area unit of bird populations, however the best actual range of vertebrates within the region area unit fish, then it's necessary to allow a bigger coefficient to measurements of fish populations if we tend to area unit to possess associate correct image of the speed of population decline for species therein region.

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A project to chop the quantity of water withdrawn from the wildlife-rich stream Itchen within the GB.
Previously, the Living Planet Index was calculated mistreatment the typical decline all told of the species populations measured. The new weighted methodology analyses the info to supply what ZSL says could be a way more correct calculation of the collective standing of populations all told species and regions.

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The report shows that the most important recorded threat to diversity comes from the combined impacts of surroundings loss and degradation, driven by what WWF calls unsustainable human consumption.

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We ar merely being a lot of refined with the method we have a tendency to use the data”

ZSL voice
The report notes that the impacts of temperature change|temperature change} have become of accelerating concern - though the impact of climate change on species up to now is controversial.

WWF is keen to avoid despair. It points to conservation efforts to avoid wasting species like:

A Gorilla gorilla Conservation Programme in Rwanda, promoting Gorilla gorilla commercial enterprise
A theme to incentivise small-scale farmers to maneuver off from slash and burn agriculture in Acre, Brazil

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It catalogues areas of severe impact - in Ghana, the lion population in one reserve is down 90% in 40 years.

In West Africa, forest felling has restricted forest elephants to 6-7% of their historic range.

In Nepal, habitat loss and hunting have reduced tigers from 100,000 a century ago to just 3,000.

In the UK, the government promised to halt wildlife decline - but bird numbers continue to fall.

The index tracks more than 10,000 vertebrate species populations from 1970 to 2010. It reveals a continued decline in these populations. The global trend is not slowing down.

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The Living Planet Index tracks quite ten,000 vertebrate species populations from 1970 to 2010
The team at the zoological society say they've improved their methodology since their last report 2 years past - however the results ar even additional minatory.

Then they calculable that life was down "only" around half-hour. regardless of the numbers, it looks clear that life is continuous to be driven out by act.

The society's report, in conjunction with the third house WWF, says humans ar lowering trees additional quickly than they will re-grow, gathering additional fish than the oceans will re-stock, pumping water from rivers and aquifers quicker than downfall will fill up them, and emitting additional carbon than oceans and forests will absorb.