Tag: "winter" at biology news

Climate change isolates Rocky Mountain butterflies

...ore vulnerable," he added. One particularly cold winter or summer season may be enough to wipe out an entire meadow of Parnassius, said Roland, who is the lead author of a paper on this research that appears today in the Proceedings of the National Academy of Sciences. Roland also said the Parnassius ar...

Secret life of elephant seals not secret anymore!

...ments reveal in detail where the seals go on their winter feeding trips, where they find food and where they...y 2003 and lasted throughout most of the Antarctic winter season. The longest track was 326 days and up to 30,000 profiles of temperature and salinity were ob...

Satellite tracking will help answer questions about penguin travels

...e cycle, their movements on the journey from their winter feeding grounds back to their breeding colonies al...they're getting oiled somewhere between where they winter and Punta Tombo," Boersma said....

Waters off Washington state only second place in world where glass sponge reefs found

...ed on the open Washington shelf is very exposed to winter storms, which makes it much more likely that other reef-building glass sponges are still to be found around the globe, for example, on the Alaskan and Russian continental shelves, Johnson says. Solitary glass sponges are found living in many parts o...

Steroids, not songs, spur growth of brain regions in sparrows

...housed them in short-day light conditions to mimic winter for 12 weeks. Eleven of the birds then were surgically deafened. A week after the surgery, all of the birds were given testosterone implants and were shifted to long-day light conditions, similar to what they would encounter during their breeding s...

Limpets reveal possible fate of cold-blooded Antarctic animals

...ntil now scientists assumed that a lack of food in winter was the major limiting factor. Studies of the protein-making abilities of limpets in both the sea around the British Antarctic Surveys (BAS) Rothera Research Station and in the laboratory aquarium reveal that these animals cannot make proteins the ...

Universal flu vaccine being tested on humans

...lu each year. A more severe flu year - such as the winter of 1989-1990 - claimed in our country 4500 victims.Besides the annual flu epidemics, there is the possibility of a pandemic, which occurs every 10 to 30 years and causes more severe disease symptoms and a higher mortality rate. During the pandemic ca...

Changing climate will challenge Northeast agriculture, CU expert warns

...rrently constrained to southern states by our cold winter temperatures could encroach throughout the southern half of New York by mid-century," said Wolfe. His recommendations to farmers and gardeners included plowing and tilling less to reduce the burn off of stored soil carbon that releases carbon dioxide...

Loss of hemlocks will affect water dynamics in southern Appalachian forests

...uce annual forest transpiration by 10 percent, and winter and spring transpiration by 30 percent. We expect this will increase soil moisture and alter both the amount and timing of stream flow. The duration of these changes will depend on how other vegetation responds to the loss of hemlock. ...

Fossil DNA illuminates life

...e yew trees reveal that the temperature during the winter could not have been lower than minus 17 degrees Celsius, and the presence of other trees shows that summer temperatures were at least 10 degrees. Climate theories over-turned The research results are the first direct proof that there was forest ...

Insects to solve crimes

...ures, given that the decomposition of a cadaver in winter is different from that in winter. Moment of death The team has described all the larval stages of some species. These are useful in determining the time of death of the body, given that, if the larvae are found in the body and knowing their speci...

Satellite images reveal link between urban growth and changing rainfall patterns

...th of cities and a decrease in rainfall during the winter dry seasons from 1988 to 1996. ''We found that a...impact on precipitation patterns, such that in the winter season there is a reduction in rainfall as an effect of urbanization,'' Seto explained. ''Primarily ...

Early fire risk for mountains near Los Angeles

...rious periods: the Nov. 1-May 31 wet season total, winter (December-January-February) precipitation and spring (March-April-May) precipitation. The study found spring rainfall amounts at a University of California, Los Angeles, weather station can be used to make statistically valid predictions of when ...

Lack of sun does not explain low vitamin D in elderly who are overweight

...here the study was conducted, sun rays are weak in winter compared with summer months. The researchers measured participants percent body fat using dual-energy x-ray absorptiometry (DXA), a precise method for determining body composition. Individuals were grouped into quartiles of percent body fat: less tha...

For many insects, winter survival is in the genes

...is underscores the essential role of this gene for winter survival, suggesting that this particular heat-shock protein is a major contributor to cold tolerance in insects," Denlinger said. "It's highly likely that the other heat-shock proteins we found during diapause in the flesh fly are also important to ...

Cooperative science program yields results

...rotect sea lions. While cod fishing is best in the winter and spring when the fish are tightly schooled, part of their season was shifted to the fall so it would not interfere with sea lion feeding. In the fall, however, the cod are dispersed, resulting in longer tows and increased bycatch of halibut. Alt...

Humans aren't the only ones with obesity problems

...available. In nature, horses would eat less in the winter and lose the weight by spring. Under human care, horses are fed generously year round and never lose the extra weight. "Horses need to be exercised daily in meaningful ways," said Johnson. "When exercising horses, owners should push their horses ...

Turtles are loyal in feeding as well as in breeding

...e foraging grounds, moving to deeper water for the winter where they conducted dives of up to a record breaking 10.2 hours. Five females were also tracked when they nested again up to five years later and returned to the same foraging sites. Green turtles have been observed cropping sea grass gardens to e...

Study shows hibernating bears conserve more muscle strength than humans on bed rest do

...re confined and anorexic for several months during winter but can still retain muscle protein and display sustained activity if disturbed, we measured skeletal muscle strength, fatigue resistance, and in vivo contractile properties of intact muscles in bears within their natural dens." Adapting a system u...

Winter flounder on the fast track to recovery

...stimated that it could take more than a decade for winter flounder to regain its once-robust place in New En...at the University of New Hampshire are setting the winter flounder (Pseudopleuronectes americanus) fishery on the fast track to recovery. New research indicat...

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(Date:5/21/2013)... at Chicago College of Medicine will study gender differences in ... energy source -- and how changes in fat metabolism play ... 4-year grant from the National Heart, Lung and Blood Institute. ... for energy. These changes may play a major role in ... and women, says E. Douglas Lewandowski, director of the UIC ...
(Date:5/21/2013)... charted the path of insulin action in cells in ... blueprint for understanding what goes wrong in diabetes. ... Professor David James from Sydney,s Garvan Institute of Medical ... of the prestigious journal Cell Metabolism . , ... very important role in the body because it helps ...
(Date:5/20/2013)... is known about the effect of physical education (PE) ... University finds that increasing the amount of time that ... of obesity. , The study represents some of the ... youth obesity, and is forthcoming in the Journal ... of the study can be viewed at: http://www.sciencedirect.com/science/article/pii/S0167629613000556 ...
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