TV News LIES

Monday, Oct 20th

Last update02:28:05 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...


Late October hurricane outlook warns of tropical trouble

HurricanesThe 2025 Atlantic hurricane season might have at least one more trick up its sleeve.A tropical...

US’s strongest tornado in 12 years rips across North Dakota and kills three

EF5 tornadoA deadly tornado that tore across North Dakota this summer has been upgraded to an EF-5,...

Coral reef collapse drives world across first climate tipping point

Coral reef collapseThanks to the dire condition of the Earth's coral reefs, the planet has now reached its...

'An extraordinary legacy': Tributes after chimpanzee expert Jane Goodall dies age 91

Jane Goodall diesDr Jane Goodall, who died today at 91, devoted her life to the study and conservation...
 
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!