Sentences with phrase «widespread extinctions»

The study, published today in the Proceedings of the National Academy of Sciences, addresses a longstanding paradox between predictions of widespread extinctions of cold - water species and a general lack of evidence for those extinctions despite decades of recent climate change.

Although the underlying causes are unclear, the onset of the PETM about 56 million years ago was rapid, occurring within a few thousand years, and ecological consequences were large, with widespread extinctions in both marine and terrestrial ecosystems.

This «central Atlantic magmatic province» (CAMP) released carbon dioxide and sulphurous compounds into the atmosphere — supposedly triggering global warming, acid rain and widespread extinctions on land and at sea.

«This study is really important because it shows that widespread extinctions associated with climate change are not simply a theoretical construct,» says Chris Thomas at the University of York in the UK.

The Kotlinian Crisis, as it is known, saw widespread extinction and put an end to the Ediacaran Period.

Melting glaciers turning land to bog was behind widespread extinctions of animals like the giant sloth and woolly mammoth between 15,000 and 11,000 years ago.

BIG DEATH: Some argue that widespread extinctions of large mammals, stretching as far back as 40,000 years ago, deserves recognition as the starting point of any human - induced epoch.

This «central Atlantic magmatic province», aka CAMP, released carbon dioxide and other compounds into the atmosphere — supposedly triggering global warming, acid rain and widespread extinctions.

Insects, Disease and Death in the Cretaceous,» George and Roberta Poinar argued that insects carried diseases that contributed to the widespread extinction of the dinosaurs around the «K - T boundary» about 65 million years ago.

Or is minimizing alterations to the global environment introduced by human activity — rising levels of CO2 from fossil - fuel burning, widespread extinction, dams that impound water — more important to our success?

Sinervo led a landmark study published in 2010 documenting the widespread extinction of lizard populations around the world due to climate change.

Such a massive impact would account for the widespread extinctions at the end of the Cretaceous.

Previous studies have suggested a widespread extinction among flowering plants at the K - T boundary, and it's long been assumed that the bees who depended upon those plants would have met the same fate.

For the first time ever, scientists have documented a widespread extinction of bees that occurred 65 million years ago, concurrent with the massive event that wiped out land dinosaurs and many flowering plants.

The widespread extinctions of large mammals at the end of the Pleistocene epoch have often been attributed to the depredations of humans; here we present genetic evidence that questions this assumption.

But a shower of particles wasn't the only effect of the collision — the impact caused fires, climate change and widespread extinctions.

It is driving the rapid depletion of fossil fuel resources with a dramatic increase in associated emissions and consequent climate change; it is accelerating the loss of biodiversity and widespread extinction of species; it is intensifying the growing shortage of fresh water to meet human needs.