TV News LIES

Friday, Oct 24th

Last update05:59:50 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...


Orca Whale Calf Born to Endangered Pod May Have Died in Open Ocean

baby oca deadThe largest members of the dolphin family, orcas are highly social and intelligent marine mammals that...

Another Month, Another Global Heat Record Broken

Global warmingIt sounds like a broken record: Last month again set a new mark for global heat....

Green groups say EPA underestimates methane leaks from fracking

Fracking report undrestimates methaneThe EPA has become increasingly concerned with reducing the methane emissions inherent in the oil and...

UK fracking faces bust amid Opec oil price war

UK FrackingExperts have warned that a rush to start fracking for oil across Britain may already be...
 
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!