TV News LIES

Saturday, May 27th

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...


A third of the nation's honeybee colonies died last year. Why you should care

Bees dyingAmerica's beekeepers watched as a third of the country's honeybee colonies were lost over the last...

Arctic stronghold of world’s seeds flooded after permafrost melts

Doomsday seed vaultIt was designed as an impregnable deep-freeze to protect the world’s most precious seeds from any...

Removed from the land before, Ponca nation vows to protect the Earth from Keystone XL

Tribe to fight againsst Keysotne PipelineUnder a boundless canopy of clear blue skies painted with wispy white clouds, Mekasi Camp Horinek...

Locals dismayed as Trump's EPA gives new life to controversial Alaska mine

Trump's EPA re-opens Alska gold mineFurther legal battles and protesters “standing in front of bulldozers” could be in store in Alaska,...
 
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!