News tagged with polar seas

The predator survives – but the ecosystem crashes

What do killer whales, polar bears and humans have in common? They are adaptable predators with the ability to select new prey when their favourite food is in low supply. But this change can disrupt entire ecosystems.

dateOct 06, 2015 in Ecology
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Scientists say polar bears won't thrive on land food

A group of researchers say polar bears forced off melting sea ice will not find enough food to replace their current diet of fat-laden marine mammals such as seals, a conclusion that contradicts studies indicating that bears ...

dateApr 01, 2015 in Ecology
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