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Tag: "temperatures" at biology news

Deep thinking: Scientists sequence a cold-loving marine microbe

...hilly comfort zone. The bacteria typically require temperatures less than 20° to grow. Scientists have found C. psychrerythraea--which prefers temperatures of -1° to 10° --hugging sediments along the Arctic floor, floating in the open ocean, and nestled in...

Research Reveals Functions Of Harmful Shellfish Pathogens

...in shellfish and seawater, particularly when water temperatures are warm, and can lead to serious health concerns. ARS scientists at the Microbial Safety of Aquaculture Products Center of Excellence in Dover, Del., are studying these bacteria with the goal of keeping them out of shellfish. Gary P. Richards, a mi...

Molecular thermometers on skin cells detect heat and camphor

... "molecular thermometers" that detect hot and cold temperatures through the skin and communicate the sensation of ...3, for instance, becomes activated at warm and hot temperatures of 33° C (91.5° F) and above. Similarly, other TRP channels are specifically activated within hot, w...

Innovative collaboration brings Arctic science into the classroom

...father out to holes in the ice and occasionally in temperatures as low as ?5 degrees Celsius (-67 degrees Fahrenheit). Anya's samples are already proving to be highly valuable, as her high frequency samples have captured temporal variability that otherwise would have been missed. Because of Anya's interest, in M...

Currents could disrupt ocean food chain

...erated carbon dioxide could increase water and air temperatures and decrease salinity in the North Atlantic at a r...warm state in as little as 20 to 50 years. Surface temperatures in Greenland increased 20 to 30 degrees Fahrenheit and water temperatures increased 10 to 20 degrees...

A New Species of Monkey is Discovered in Tanzania: The First in Africa for More Than 20 Years

...e monkeys occur as high as 8,000 ft (2450 m) where temperatures frequently drop below freezing; its long coat is probably an adaptation to the cold. The taxonomic name of the species, Lophocebus kipunji, recognizes the monkey’s local Kinyakyusa name (pronounced kip-oon-jee) used by a few hunters around Mt. Rungwe...

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

...al climate warming. "Declining oxygen and warming temperatures would have been doubly stressful for late Permian animals," Huey said. "As the climate warms, body temperatures and metabolic rates go up. That means oxygen demand is going up, so animals would face an increased ...

Low oxygen likely made Great Dying worse, greatly delayed recovery

...al climate warming. "Declining oxygen and warming temperatures would have been doubly stressful for late Permian animals," Huey said. "As the climate warms, body temperatures and metabolic rates go up. That means oxygen demand is going up, so animals would face an increased ...

Elephant seal pups suffer from ocean warming

...in the Open Access journal BMC Biology. High ocean temperatures observed from 1975 to the late 1990s are correlated with a 28% decrease in the weight of elephant seal pups. Elephant seals are shown to be sensitive to ocean temperature changes associated with both long-term 25-year cycles and short-term 3-4 year c...

Advancements In Genomics Foster Deep Sea Discoveries

...xtreme deep ocean conditions include near freezing temperatures and up to 15,000 pounds per square inch of “skull-crushing?pressure. Scientists say precious information lies in discovering how organisms have adapted and evolved to such conditions. Bartlett and his colleagues probed the genetic makeup of Photobac...

Africa to take it on chin again with climate change

...s to shape rainfall in the Sahel. When sea-surface temperatures are warmer in the South Atlantic than in the North...In the Atlantic, natural variability affects ocean temperatures more strongly, making it more difficult to attribute changes there to greenhouse-gas effects. Paleo...

New lab technique identifies high levels of pathogens in therapy pool

...t the facility. The indoor pool water was kept at temperatures of 92 degrees to 94 degrees F and was treated with hydrogen peroxide rather than chlorine. The team found that pathogens thrived inside hydrogen peroxide bubbles produced at the pool surface and were dispersed as the bubbles became airborne and burst...

Low level of extinction during ice age linked to adaptability

... of the extremes in the annual minimum and maximum temperatures that were typical of the late Paleozoic. During that era, "seasonality" -- the difference between annual temperatures' highs and lows -- was amplified by the presence of glaciers. "I've suggested that those brachiopods which eventually became extinc...

South America's vast pantanal wetland may become next everglades, UNU experts warn

...urn potentially affect future climate change." As temperatures rise, species will migrate towards higher latitudes and altitudes in both hemispheres, and the species composition and functioning of plants will be altered, particularly the efficiency with which they use water. If the climate changes rapidly, as p...

Octopuses occasionally stroll around on two arms, UC Berkeley biologists report

...eth, in the ability to tolerate salt and different temperatures at different latitudes," he said. Kingsley, Schluter and their co-workers picked one trait -- the fish's armor plating -- on which to focus intense research, using the armor as a marker to see how evolution occurred. Sticklebacks that still live in ...

Researchers trace evolution to relatively simple genetic changes

...eth, in the ability to tolerate salt and different temperatures at different latitudes," he said. Kingsley, Schluter and their co-workers picked one trait -- the fish's armor plating -- on which to focus intense research, using the armor as a marker to see how evolution occurred. Sticklebacks that still live in ...

Antarctic ice shelf retreats happened before

...d after a long period of warmth. Whilst rising air temperatures are believed to be the primary cause of recent dra...ders of the project said, 'We know that rising air temperatures can break up ice shelves but there has been a suspicion for some time that the role of the ocean may...

Yellowstone microbes fueled by hydrogen, according to U. of Colorado study

... drives microbial communities in park featureswith temperatures above 158 degrees Fahrenheit. Photosynthesis is notknown to occur above that temperature.A combination of three different clues led researchers to conclude thathydrogen was the main source of energy. Genetic analysis of thevarieties of microbes livin...

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