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Tag: "demise" at biology news

Napoleon's mysterious death unmasked, UT Southwestern researcher says

...ogy & Hepatology , indicates that the despot's demise was imminent. "This analysis suggests that, even if the emperor had been released or escaped from the island, his terminal condition would have prevented him from playing a further major role in the theater of European history," said Dr. Robert Ge...

Immunization rates hit record high in poor countries

...cial forest owners have something to lose with the demise of the hemlock. But far more important, as the hemlocks expire they take an ecosystem down as they fall. In cool hollows and along shady mountain streams the hemlock has grown for millennia where other trees wouldn't thrive: a quiet giant soaring...

Fungal factories may save hemlock forests

...cial forest owners have something to lose with the demise of the hemlock. But far more important, as the hemlocks expire they take an ecosystem down as they fall. In cool hollows and along shady mountain streams the hemlock has grown for millennia where other trees wouldn't thrive: a quiet giant soaring...

Overfishing large sharks impacts entire marine ecosystem, shrinks shellfish supply

...idly. Ecologists have long predicted that the demise of top predators could trigger destructive consequences. Researching such effects, however, has been a challenge. "This is the first published field experiment to demonstrate that the loss of sharks is cascading through ocean ecosystems and infl...

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

...ls are saying is that Chicxulub probably aided the demise of the dinosaurs, but so did Deccan trap volcanism's greenhouse warming effect and finally a second huge impact that finished them off. So where's the crater? "I wish I knew," said Keller. "There is some evidence that it may have hit in India, whe...

Far more than a meteor killed dinos

...ls are saying is that Chicxulub probably aided the demise of the dinosaurs, but so did Deccan trap volcanism's greenhouse warming effect and finally a second huge impact that finished them off. So where's the crater? "I wish I knew," said Keller. "There is some evidence that it may have hit in India, whe...

UNH researcher restoring oyster reefs to Great Bay

...vious century saw a slower but equally devastating demise of oysters from exuberant overharvesting. "We have seen local extinction on some reefs," says Ray Grizzle, research associate professor at the University of New Hampshire's Jackson Estuarine Laboratory. Now Grizzle is working to bring oysters back ...

Major initiative proposed to address amphibian crisis

...ct many other animal species, including humans.The demise of amphibians also has ecological ripple effects ?...food supply for birds, fish and other animals. The demise of entire species also eliminates their possible use in biomedicine and biotechnology. One of the...

A little telomerase isn't enough

...r telomeres shortened over time, bringing an early demise to stem cells that replenish the blood supply, immune system and intestine, the researchers report. Moreover, offspring of these mice bred to have normal levels of telomerase still exhibited early loss of stem cells, the researchers report in the Dec...

Study shows big game hunters, not climate change, killed off sloths

...he end of the last Ice Age was responsible for the demise of prehistoric sloths has puzzled scientists because both events occurred at the same time, about 11,000 years ago. But by using radiocarbon to date fossils from Cuba and Hispaniola, where humans appeared later than on the North American continent, l...

Mayan stingless bee keeping: Going, going, gone?

...cal Research Institute (STRI) warn of the imminent demise of stingless bee keeping on the Yucatan ?a result of ongoing cultural change and habitat loss. "In our initial surveys of bee keepers working with native bees in the eighties, we estimated that they maintained more than a thousand active hives. In 1...

Multi-species genome comparison sheds new light on evolutionary processes, cancer mutations

...urs about 65 million years ago. Before the sudden demise of dinosaurs and many other types of animals, which is thought to have resulted from a massive comet or asteroid striking Earth, mammals shared fairly similar body plans and also fairly similar genomes. Researchers speculate that the mass extinction ...

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