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Tag: "western" at biology news

Growth in the sea comes down to a struggle for iron

...eft Hawaii, bound for the sub-Arctic waters of the western Pacific. Owned by the Office of Naval Research and...of iron additions may vary from the eastern to the western North Pacific. Even with additional iron, large phytoplankton cells in the east do not appear to gro...

New research indicates a 'troubled' greenhouse is brewing

...es per year. As a result, sagebrush deserts of the western U.S. were transformed into sub-humid woodlands." Retallack agrees with previous research indicating that the cause of the late Paleocene greenhouse spike, which lasted less than half a million years, was a catastrophic release of natural gas from un...

Scientists find fossil proof of Egypt's ancient climate

... reveal clues about the climate and environment of western Egypt, lo those many years ago. They also could sh...from a small lake (now dry) in the Kharga Oasis of western Egypt to reconstruct climatic conditions during the lifetime of the lake. Their analyses support a s...

International HapMap consortium expands mapping effort

...and Utah residents with ancestry from northern and western Europe. No medical or personal identifying information was obtained from the 270 donors. However, the samples are identified by the population from which they were collected. Although any two people are 99.9 percent identical at the genetic level, u...

Surprising findings reported about iron overload

...percent of white persons of northern, central, and western European descent. In fact, a health-screening program conducted by Barton and Acton at an Alabama forest products mill detected the disorder in 0.39 percent of all white participants, and 0.53 percent of white men. Acton and Barton said they hope th...

Survey finds silver contamination in North Pacific waters

...on from Asia is becoming a serious problem for the western United States, and this may be a valuable tool for tracing those emissions, both in the atmosphere and in the water," she said. Prevailing westerly winds carry atmospheric pollution across the North Pacific ocean from China, where coal is the primar...

New Estimates For The Causes Of Child Deaths Worldwide

...thiopian child is over 30 times more likely than a western European to die before his or her fifth birthday." ...

Are rice and wheat behind China's population boom?

...g. The Chinese were not known to have contact with western Asia - the likely source of the wheat - until much later. "Despite all we know about China, we have never had a really good idea about what their agricultural history was," Crawford says. "We had no evidence of what other kinds of crops they grew, t...

Grizzlies set to invade high Arctic?

...red on Melville Island, an uninhabited part of the western Arctic archipelago 1,500 kilometres due north of Yellowknife, and 1,000 kilometres north of the Arctic Circle. "We know grizzlies go out on the sea ice to hunt seals, but no one has ever seen one that far north," says Dr. John England a geology prof...

After a time-shift, mixed signals from the circadian clock

... that mimics a transition from the eastern U.S. to western Europe. By performing electrophysiological analysi...ift corresponding to a transition from the U.S. to western Europe, the ventral part of the clock is immediately synchronized to the new light schedule, but the...

Bee mites suppress bee immunity, open door for viruses and bacteria

...o the United States in 1987. They quickly infested western or European honey bees. One sign of infection is the presence of bees with deformed wings. Also, sometimes seemingly healthy colonies become ill and the complete hive collapses in about two weeks. "The native Chinese bees do not have the same proble...

Rabies spread speeds up

...and colleagues make a strong case that halting its western march depends on a strategy based on early detection and high-powered intervention programs - a sensible approach for any infectious disease. ### Citation: Russell CA, Smith DL, Childs JE, Real LA (2005) Predictive spatial dynamics and strategic pl...

Studies reveal how plague disables immune system, and how to exploit the process to make a vaccine

...ear worldwide, including 10 to 20 each year in the western United States. One out of seven persons infected dies, even with aggressive treatment. Since 2001, however, many people have worried that terrorists could exploit Y. pestis as a weapon, spreading it widely and rapidly as an aerosol rather than throu...

Ocean climate predicts elk population in Canadian Rockies

...ve NPO translates into a milder climate in most of western North America, but it means more severe weather in the mountain regions, where climate is more complex. Hebblewhite analyzed the elk population in Banff National Park from 1985 to 2000 and cross-referenced his results with NPO values during that per...

Poaching, logging, and outbreaks of Ebola threaten central African gorillas and chimpanzees

...eral response to the threats to populations of the western lowland gorilla (Gorilla gorilla gorilla) and the central African chimpanzee (Pan troglodytes troglodytes) that share the same habitat in six countries. The plan represents an urgent appeal to the international community for immediate action, before...

Discovery of an American salamander where it shouldn't be: Korea

...hool in Chungcheongnam-do province midway down the western edge of the Korean peninsula. Wake, the world's top expert on lungless salamanders, and colleagues in South Korea and Illinois report the discovery and their analysis of the new species, which they named Karsenia koreana, in the May 5 issue of Nature...

Plankton can run, but can't hide from basking sharks

...e at dusk and then downward at dawn, sharks in the western English Channel did the reverse. This is the first time this behaviour has been observed among plankton-eating sharks, the authors say, and shows that shark diving behaviour differs predictably between deep waters and in shallow seas close to plankto...

Divergent life history shapes gene expression in brains of salmon

... caught in a tributary of the Connecticut River in western Massachusetts, with new functional genomics technologies to simultaneously monitor thousands of genes in individual tissues. "Research like this was very difficult in the past because we lacked adequate tools to measure gene expression," Aubin-Horth...

Space matters: Estimating species diversity in the fossil record

...mmal Mapping Project (MIOMAP). MIOMAP includes all western North American mammals from 5-30 million years ago - 3,100 localities and 14,000 occurrences of species in all. The authors then tested the fossil data for species-area effects by plotting fossil species richness against different geographic areas. A...

Scientists show that tick-borne flaviviruses use a novel mechanism to evade host defenses

...rne encephalitis, Omsk hemorrhagic fever (found in western Siberia) and the closely related Kyasanur forest disease (found in western India). "These diseases are spread by the same tick that carries Lyme disease in the U.S.," says Dr...

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