Tag: "winter" at biology news

Surgery season and vitamin D intake may predict successful lung cancer surgery

...earchers found that patients who had operations in winter were about 40 percent more likely to die from thei... overall survival, patients who had surgery in the winter were about 25 percent more likely to die than those who were operated in summer. Five-year overall s...

Butterfly migration could be largest known

...n by the scientific name Vanessa cardui, spend the winter in the desert. As caterpillars turn into adults in...er numbers. This year, however, exceptionally high winter rainfall in southern California has created a bumper crop of plants for the caterpillars to eat, fue...

Wolves alleviate impact of climate change on food supply, finds new UC Berkeley study

...r the decades. They found that while the onset of winter did not change significantly over the decades, sno...most pronounced differences also found in the late winter months. Using statistical models, the researchers calculated that in scenarios where wolves are ab...

New winter hulless barley has high protein

..., including food, feed, and ethanol. The price for winter barley has declined since 1996. Even though winter barley was an integral component of the region's cropping system, growers stopped producing it becau...

Gray wolves maintain the food chain in winter

...Getz used data from the past 50 years to establish winter trends and model wolves' impact on the fate of resident scavengers faced with a changing climate. Their models show that wolf kills temper the potentially devastating effects of climate-related carrion shortages on scavengers. Unlike mountain lions a...

New lab technique identifies high levels of pathogens in therapy pool

...way from very basic and important issues." Higher winter levels of airborne pathogens in such enclosed pool areas are likely due to seasonal ventilation practices, including closed doors and windows during cold periods, said Pace. Since the study, the rate of air exchange in the pool area has been increas...

Grizzlies set to invade high Arctic?

... Bay. They're also known to be able to survive the winter and den on Victoria Island, the island separated from Melville to the north by Viscount Melville Sound. The geologists, now bitten with the grizzly bear research, emphasize that they are not wildlife biology experts. Nonetheless, they say the discove...

Asian interest provides opportunities for US hard white wheat

...or this, hardwhite varieties with typical hard red winter wheat quality will work ifthe ash is low, he said,...gh protein hard red spring, soft white and hardred winter wheats. They purchased a small amount of hard white and want tobuy more. Australia and Canada genera...

Restoring the marshes of Eden

...sts have just begun conducting the country's first winter bird survey in 20 years, thanks to training sessions with BirdLife International. He adds that this will be a big step forward in understanding exactly how the disappearing wetlands have impacted local species. "We'll have a good sense after that, I ...

Tips from the Journals of the American Society for Microbiology

... the summer of 2002 and four bays per coast in the winter of 2002, and tested for the presence of Salmonella. Results showed that 7.4% of the oysters tested were positive for Salmonella and they came from all three U.S. coasts. "Potential pathogenic serotypes of Salmonella were isolated from oysters harves...

Tree-ring data reveals multiyear droughts unlike any in recent memory

... drought. Tree growth is particularly sensitive to winter snow pack, which is also the main driver of stream flow in the Columbia. The scientists first related tree-ring data to stream-flow records since 1931, then considered the implications for flows of tree-ring data back to 1750, much of the time when r...

Report assesses health implications of perchlorate ingestion

...PERCHLORATE INGESTION will be available later this winter from the National Academies Press; tel. 202-334-3313 or 1-800-624-6242 or on the Internet at HTTP://WWW.NAP.EDU. Reporters may obtain a pre-publication copy from the Office of News and Public Information (contacts listed above). [ This news r...

Desertification alters regional ecosystem climate interactions

...here was a shift in plant responses from summer to winter precipitation events." he continued. Dr. Christopher Field, director of the Department of Global Ecology, commented on the research: "Desertification affects the future prospects for hundreds of millions of people. Like many of the most important en...

Scientists find that the human nose is more complicated than a jumbo jet

...melling chimney smoke, roasting chestnuts, warming winter puddings and the other seasonal scents. Now researchers funded by the Biotechnology and Biological Sciences Research Council (BBSRC) have not only discovered how air moves through the nose bringing you those smells but their work may lead to new ways...

Winter biological processes may help spread shrubs in the Arctic

...oScience, a variety of evidence now suggests that winter biological processes form a positive feedback mech...n during winter. This effect alters and boosts the winter activity of subsurface soil bacteria and fungi that provide accessible nutrients for shrubs, notably...

Shedding feathers early may enhance sex appeal, new songbird study shows

...olt at stopover sites on their journey to tropical winter habitats," explains Ryan Norris, who conducted the... molt at a "stopover" site, then continue to their winter habitat. Forty per cent of the male American Redstarts in the study molted in their tail feathers at...

High-flying observatory reveals land changing to desert

...here was a shift in plant responses from summer to winter precipitation events." he continued. Dr. Christopher Field, director of the Department of Global Ecology, commented on the research: "Desertification affects the future prospects for hundreds of millions of people. Like many of the most important en...

Latest census finds more American pika populations disappear as climate warms

...gathering alpine wildflowers and grasses for their winter food supply. American pikas may act as 'ecosystem ...g activities. Since food is difficult to obtain in winter in the alpine environment, pikas cut, sun-dry, and later store vegetation for winter use in characte...

NSF funds Panikov's Alaskan Tundra Microbial Observatory project

...sion from soils to atmosphere, they found sizeable winter activity of the tundra microbial community." In laboratory experiments conducted in 2000 and 2004, Panikov and others, using sensitive radioisotope technique, detected respiratory activity of microorganisms down to -40C, the temperature interval wh...

The secret life of acid dust

...tous in arid areas such as Israel, where this past winter Laskin and colleagues Vicki Grassian, chemistry professor at the University of Iowa, and Yinon Rudich, professor of environmental sciences and energy research at the Weizmann Institute of Science, collected particles for analysis. Laskin presented th...

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