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Tag: "extinction" at biology news

Skull study sheds light on dinosaur diversity

...nosaur era but were thought to have been pushed to extinction by more specialized plant-eaters at the end of that era. New discoveries, however, are showing that one lineage of sauropods diversified at the end of the dinosaur era, University of Michigan paleontologist Jeffrey Wilson says. Wilson's recent rest...

Traditional models underestimate extinction rates

... to accurately predict the population dynamics and extinction risk of potentially endangered species has never b...s traditionally used to estimate the likelihood of extinction and shows that because they ignore a critical parameter in projecting risk, they underestimate extin...

A Father’s Day Gift: Free DNA Paternity Testing

...th deep sea trawling, have already resulted in the extinction of species." Growing value of products from marine biotechnology The world's oceans host 32 of the 34 known phyla on Earth, the report says. Species diversity is known to be as high as 1,000 per square meter in the Indo-Pacific Ocean. Significantly...

Clear rules needed to govern deep sea bioprospecting: UNU

...th deep sea trawling, have already resulted in the extinction of species." Growing value of products from marine biotechnology The world's oceans host 32 of the 34 known phyla on Earth, the report says. Species diversity is known to be as high as 1,000 per square meter in the Indo-Pacific Ocean. Significantly...

Proposal would allow wild animals to roam North America

...alize ecosystems that have been compromised by the extinction of many of the continent's large mammals, many of them predators. It would also offer ecotourism and land-management jobs to help the struggling economies in rural areas of the Great Plains and Southwest. During the Pleistocene era -- between 1.8 mil...

Oxygen increase caused mammals to triumph, researchers say

...lacental mammals on Earth at the time of the great extinction of dinosaurs about 65 million years ago, Falkowski.... They were, however, tiny, limited creatures; the extinction event itself, while eliminating the dinosaurs, did little to further the mammalian domination of the...

Space matters: Estimating species diversity in the fossil record

...current extinctions relies on descriptions of past extinction events, controlling for a paleodiversity¡Varea effect may provide a better frame of reference for understanding the current biodiversity crisis. Thanks to the innovative text-mining tools and approach presented here, future studies can more easily co...

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

...ong mammals dramatically accelerated following the extinction of the dinosaurs about 65 million years ago. Befo...milar genomes. Researchers speculate that the mass extinction opened new ecological niches for mammals, spurring their diversification and the emergence of new ma...

Size matters: Preventing large mammal extinction

...ing large mammals such as elephants and rhino from extinction could be made more effective by focusing efforts o...udy of its kind analyses key factors linked to the extinction of mammals. "Conservation biologists have always known that large bodied mammals are at greater ris...

Scientists to mimic nature for newest cancer drugs

...ld after 1000 years of whaling brought it close to extinction in the early 20th century. Data compiled by Nowac...ement of shipping and fisheries, right whales face extinction within the next 100 years." The current plight of the North Atlantic right whale stands in stark co...

FSU scientist warns North Atlantic right whale facing extinction

...ld after 1000 years of whaling brought it close to extinction in the early 20th century. Data compiled by Nowac...ement of shipping and fisheries, right whales face extinction within the next 100 years." The current plight of the North Atlantic right whale stands in stark co...

Scientists reveal the shape of a protein that helps retroviruses break into cells

The biggest mass extinction in Earth history some 251 million years ago was preceded by elevated extinction rates before the main event and was followed by a delayed recovery that lasted for millions of years...

Low oxygen likely made Great Dying worse, greatly delayed recovery

The biggest mass extinction in Earth history some 251 million years ago was preceded by elevated extinction rates before the main event and was followed by a delayed recovery that lasted for millions of years...

Aggressive aquatic species invading Great Lakes

...ieve that gobies have contributed to or caused the extinction of some native species in Lake Erie, the first lake to be invaded. "Obviously people are concerned about the effects on native species in the other lakes that gobies have now spread to," says Balshine. ...

Small species back-up giant marsupial climate change extinction claim

...Downs fossil record. The results suggest that the extinction of Darling Downs megafauna was caused by a massive... megafauna deposits - laid down on the cusp of the extinction event. PhD researcher Gilbert Price, of QUT's School of Natural Resource Science who led the study,...

Low level of extinction during ice age linked to adaptability

...graduate student may have figured out why rates of extinction were so low for many of the major groups of marine...and sea levels. Those that were not died in a mass extinction that heralded the ice age's onset. "These results not only clue us in to what happened many million...

Great White shark evolution debate involves WSU Lake Campus geology professor

...changes of life over time and how things like mass extinction affect the course of life," he said. Ciampaglio discussed his shark research findings at recent Geological Society of America meetings in Mississippi and Colorado. A scholarly journal article on the subject is pending. The geologist joined the Lake...

A new study examines how shared pathogens affect host populations

...sion, a host can be rescued from pathogen-mediated extinction by the presence of a second host with which it shares a pathogen. Sharing a pathogen among one or more alternative species may actually be limiting the spread of the pathogen in any one particular host population. Thus, an epidemic on one species may...

Introduced foxes transformed vegetation on Aleutian Islands from lush grasslands to tundra

...us on the direct effects, such as the reduction or extinction of species that are consumed by an introduced predator. This study shows how the effects of introduced species can spread throughout an ecosystem in unpredictable ways," said Donald Croll, an assistant professor of ecology and evolutionary biology at...

The secret lives of whales

...survive, Smith speculates that substantial species extinction may have occurred in the whale fall fauna. “The deep ocean appears to be a major reservoir of biodiversity on the planet. Some of the oddest animals ever discovered occur on whale falls,?says Smith. “These communities are the undertakers of the deep,...

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