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Tag: "extinctions" at biology news

Major initiative proposed to address amphibian crisis

...pecies had disappeared. Their dramatic decline and extinctions now has alarmed many researchers since it first became apparent in the past two decades. "Amphibians have sensitive skin, they live in both land and water, have no protective hair or feathers, and their eggs have no hard outer shell," Blaustein sa...

Man may have caused pre-historic extinctions

...f the Pleistocene period was a time of large-scale extinctions of animals and plants in North America and elsewhere but the factors responsible have remained open to question, with climate change and over-hunting by humans the prime suspects.Ends ...

Far more than a meteor killed dinos

...t," said Keller. "We cannot attribute any specific extinctions to this impact." No one has ever published this critical survival story before, she said. Keller's research was funded by the National Science Foundation. The story that seems to be taking shape is that Chicxulub, though violent, actually conspired...

'Fruit fly dating game' provides clues to our reproductive prowess

...t," said Keller. "We cannot attribute any specific extinctions to this impact." No one has ever published this critical survival story before, she said. Keller's research was funded by the National Science Foundation. The story that seems to be taking shape is that Chicxulub, though violent, actually conspired...

Ocean seep mollusks may share evolutionary history with other deep-sea creatures

...arbors for the mollusks, protecting them from mass extinctions and possible abrupt oxygen changes in the seas, the researchers found. However, many deep-sea species outside of the cold seeps have also managed to ride out these changes. "The shallow water environment is much more challenging, subject to changes...

The subtleties of tropical forest demise

...gging and over hunting—dramatically increase local extinctions of tropical species. "Many of the emerging threats to tropical forests become apparent only after exhaustive, long-term field studies," said Peres. "That's one of the reasons they're so universally underestimated. Even big parks and nature reserves ...

Global survey of lizards reveals greater abundance of animals on islands than on mainland ecosystems

...as island species account for half of known animal extinctions and a full 90 percent of known bird extinctions in the last 400 years. Our study suggests that islands will continue to be vulnerable worldwide.? ...

Ice Age extinction claimed highly carnivorous Alaskan wolves

...oader than previously thought. “There may be other extinctions of unique Pleistocene forms yet to be discovered,” she added....

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