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Tag: "warmer" at biology news

Scripps research team sheds light on long-sought cold sensation gene

...t, reliably avoiding cold temperatures in favor of warmer areas. "It’s pretty amazing that one gene could impact thermal sensation this much," says Ajay Dhaka, a Scripps Research postdoctoral fellow in the Patapoutian lab and lead author on the Neuron paper. "It really highlights the importance of the p...

Healthy coral reefs hit hard by warmer temperatures

...riving disease outbreaks. Our results suggest that warmer temperatures are increasing the severity of disease in the ocean."...

Discovery of new cave millipedes casts light on Arizona cave ecology

...during the last Ice Age, when northern Arizona was warmer and wetter, millipedes lived in leaf litter. As the climate warmed, they sought refuge in caves, where the subterranean realm provides more constant climatic conditions enabling their survival. Representing two distinct species (one occurring in o...

Corals that can fight global warming may one day help fragile reefs

...Harvell. However, the precise connection between warmer waters and coral disease is unclear. "It is diffic...e surface and algae in the interior. Moreover, the warmer waters cause increased virulence of some pathogens as well as a diminished ability of corals to figh...

Tundra disappearing at rapid rate

...there was an upslope surge of trees in response to warmer temperatures. It’s like it waited until conditions were just right and then it decided to get up and run, not just walk." Danby and Dr. David Hik, also from the Faculty of Science, reconstructed changes in the density and altitude of treeline fore...

Global 'sunscreen' has likely thinned, report NASA scientists

... may account for why one of the major impacts of a warmer climate ?the spinning up of the water cycle of eva...ght reaching the surface counteracts the effect of warmer air temperatures, so evaporation does not change very much," said Gavin Schmidt of GISS, a co-author...

Antarctic warming to reduce animals at base of ecosystem, shift some penguin populations southward

...major glacial stage. "We know that the climate was warmer then, sea levels were higher by a couple of meters compared to today. Lyons points to the fact that all the global climate models predict a warming in the Antarctic and a decrease in sea ice along its margins. "Those two things will have grea...

Mosquito genes explain response to climate change

..."We know that portions of the country are becoming warmer and dryer than others. Plants and animals are not confronting this stress directly, but rather they are flowering, reproducing and going dormant at different times of the year than they used to. Many species will be unable to change quickly enough ...

Satellites shed light on global warming

...ions between oceans and climate. Faster waves in a warmer ocean, as an effect of climate change, may result in complex repercussions on the climate system, many of which could turn out to accelerate the change," Dr Paolo Cipollini of the National Oceanography Centre in the UK said. Cipollini illustrated...

Why do cold animals make bigger babies?

...ironments produce larger offspring than lizards in warmer environments. So why do animals in colder climates produce larger offspring? One theory suggests the larger size of offspring counteracts their slow growth in the cold. Yet another theory suggests large offspring are not directly linked to tempera...

Evolution of Old World fruit flies on three continents mirrors climate change

...eemingly provide the flies with protection against warmer temperatures. The genetic composition found in the newest samples corresponded almost exactly to the composition of insects that in earlier studies were collected from sites 70 miles, or 1 degree of latitude, closer to the equator. That means frui...

Rising ocean temperatures, pollution have oysters in hot water

..., a heavy metal, reduces the oyster's tolerance of warmer water temperatures and makes it more vulnerable during the summer when water temperatures rise. Half of the oysters exposed to the pollutant in 28° C (82° F) water died within 20 days, said lead researcher Gisela Lannig. Oysters exposed to cadmium at...

Worms produce surprise insight into human fever

...-blooded “poikilotherms?like worms migrate toward warmer environments in response to infections. But the mechanism of fever as a response to infection is still largely unknown. The activation of the HSF-1 pathways by heat shock and its function in C. elegans immunity provides both a molecular explanatio...

Study finds the air rich with bacteria

..., followed by atmospheric conditions. For example, warmer and dryer conditions led to increased amounts of spore-forming bacteria. "This information may help explain temporal spikes, which is important in bioterror surveillance," adds Eoin Brodie, also with Berkeley Lab's Earth Sciences Division. "A spi...

High hourly air pollution levels more than double stroke risk

...e a blood vessel bursts inside the brain - for the warmer months between April and September. This showed that high hourly rates of particulate matter (in excess of 200 ug/m3) around two hours before death were associated with a more than doubling in the risk of death from a bleed into the brain. The find...

Ocean temperature predicts spread of marine species

...e, larvae from the same species travel far less in warmer waters than in colder waters, said lead author Mar...another area where they are safe from harvest. "In warmer waters, marine protected areas may need to be closer together than in colder water, since in warmer ...

Newborn screening can cause unnecessary parental stress

...ith statements like "I expected to have closer and warmer feelings for my child, and this bothers me"; the second has statements such as "My child makes more demands on me than most children.") Waisbren believes a positive test result can increase expectations of illness even when it is later found to be i...

Pollutant haze heats the Arctic

...makes the Arctic 2 degrees to 3 degrees Fahrenheit warmer during polluted, cloudy episodes than it would be ...eas are desert-like, and pollution is trapped when warmer air aloft holds down cold air at the ground surface. "The pollution is similar to the haze we get ...

Large dinosaurs were extremely hot in their day, UF study finds

...urs 65 (million) to 150 million years ago was much warmer than today, the animals could nonetheless maintain high body temperatures in polar climates with freezing or near-freezing conditions. The advantages of being a 'warm' reptile are that no energy has to be expended to produce metabolic heat to keep wa...

Cornell researchers find serious fish virus in Northeast for first time

...mmer weather impacts how the virus spreads because warmer water can stress fish, thereby lowering their natural defenses and making them more vulnerable. ...

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