TV News LIES

Tuesday, Aug 30th

Last update05:20:13 AM GMT

You are here News Environment Polar bears face 'tipping point' due to climate change

Polar bears face 'tipping point' due to climate change

E-mail Print PDF

Polar bears face 'tipping point' due to climate change Climate change will trigger a dramatic and sudden decline in the number of polar bears, a new study has concluded. The research is the first to directly model how changing climate will affect polar bear reproduction and survival.

Based on what is known of polar bear physiology, behaviour and ecology, it predicts pregnancy rates will fall and fewer bears will survive fasting during longer ice-free seasons.

These changes will happen suddenly as bears pass a 'tipping point'.

Details of the research are published in the journal Biological Conservation. Until now, most studies measuring polar bear survival have relied on a method called "mark and recapture".

This involves repeatedly catching polar bears in a population over several years, which is cost and time-intensive.

Because of that, the information scientists have gathered on polar bear populations varies greatly: for example, datasets span up to four decades in the best studied populations in Western Hudson Bay and Southern Beaufort Sea, but are almost non-existent for bears in some parts of Russia.

More...


Most Recent Related Stories...


EPA links oil and gas drilling to Texas quakes

Texasa quakes linked to frackingFederal regulators have tied a string of earthquakes in north Texas to oil and gas drilling...

Fracking Update: 3 tremors in 24 hours near Oklahoma shale country

Oklahoma tremorsThree minor seismic events were recorded near the shale reserve areas in Oklahoma in the past...

Thousands of strange blue lakes are appearing in Antarctica, and it’s very bad news

Blue lakes in antarcticaScientists have confirmed that thousands of pristine blue lakes have appeared on the ice sheets of...

Ex-regulators back Obama in fracking rule court appeal

Ex-regulators back fracking rulesA bipartisan quartet of former high-level Interior Department officials is supporting the Obama administration in its...
 
America's # 1 Enemy
Tee Shirt
& Help Support TvNewsLIES.org!
TVNL Tee Shirt
 
TVNL TOTE BAG
Conserve our Planet
& Help Support TvNewsLIES.org!
 
Get your 9/11 & Media
Deception Dollars
& Help Support TvNewsLIES.org!
 
The Loaded Deck
The First & the Best!
The Media & Bush Admin Exposed!