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Tag: "warming" at biology news

Molecular biology fills gaps in knowledge of bat evolution

...ars ago during a lush period of significant global warming in a region that is now North America. This latest research helps fill gaps in the evolutionary history of one of the most diverse group of mammals on earth and the only mammals capable of powered flight. The fossil record alone left bat evolutionar...

New research indicates a 'troubled' greenhouse is brewing

...hat another similar outburst could be triggered by warming of polar and submarine ice due to human activities. Our little warming push could repeat the troubled times of 55 million years ago." However, Retallack says these findin...

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

... Pantanal: Climate change The UNU analysis says a warming of 3° to 4°C could eliminate 85% of all remaining wetlands in the world. It says wetlands hold roughly one-sixth of all carbon held in terrestrial sinks, most of it organic matter in soil which can be released when the soil is disturbed, for example ...

In the migratory marathon, parasitized monarchs drop out early

...e. Habitat loss at overwintering sites and climate warming trends, combined with an increase of tropical milkweed species in milder climates, could ultimately replace the large migratory populations with smaller remnants that breed year-round and do not migrate. Study results suggest that if migration is lo...

Africa to take it on chin again with climate change

... Africa is projected to intensify further. Oceanic warming consistent with an increase in greenhouse gases ap...evidence linking drought in southern Africa to the warming of the Indian Ocean. However, it contradicts earlier studies that also connected the Sahelian drough...

Elephant seal pups suffer from ocean warming

Ocean warming has a negative impact on the condition of elephant seals, reveals a study published 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...

Low oxygen likely made Great Dying worse, greatly delayed recovery

... to global 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 oxygen demand and a reduc...

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

... to global 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 oxygen demand and a reduc...

Currents could disrupt ocean food chain

... precipitation and sea surface heating from global warming disrupts the Atlantic Conveyer current ?as some scientists predict ?the effect on the ocean food chain in the Atlantic and other oceans could be severe, according to a new study just published in Nature. In a worst case scenario, global productivity...

Molecular thermometers on skin cells detect heat and camphor

...phor, which is one of the main ingredients in many warming rubs. TRPV3 is the first known receptor for camphor. Significantly, when Patapoutian and his colleagues discovered TRPV3 a few years ago, they were intrigued to discover that it is unique among thermoTRP channels in that it is expressed on the surfa...

Climatologists discover deep-sea secret

...he current weakens. Scientists predict that global warming could cause part of the Greenland ice sheet to mel...be adapting to the changes brought about by global warming in the same way as it adapted to climate changes in the past. The waters in the southern hemisphere ...

Census of Marine Life explorers surprised by diversity, density of Arctic creatures

...change. They are reacting to the planet's gradual warming in increasingly unexpected and dramatic ways. This phenomenon is driving the International Polar Year of 2007/08, an unprecedented international collaboration of which the Censuses of Arctic and Antarctic Marine Life will form an important part. Bec...

Millennium Ecosystem Assessment: Many of 2 billion dryland dwellers at risk as land degrades

...wth, reduced freshwater availability due to global warming and drought, and economic growth. As well, inappropriate economic policies, including agricultural subsidies totalling US$ 300 billion in 2002, can contribute to desertification. "Studies have shown that trade liberalization, macroeconomic reforms ...

Lands surface change on Alaska tundra creating longer, warmer summers in Arctic

...in climate. "We suggest that a noticeable summer warming trend in Alaska is best explained by a lengthening...mperature increases are likely related to a global warming trend that has led to a longer snow-free season and an increase in the extent of woody vegetation. ...

Global warming increases oyster sensitivity to pollution

...y not last forever. Research has shown that global warming increases the sensitivity of oysters to metal pollution, causing a deadly threat to populations in polluted areas. Dr. Gisela Lannig from the University of North Carolina, USA, will present her work on cadmium poisoning in eastern oysters (Crassostre...

Disappearing arctic lakes linked to climate change

Continued arctic warming may be causing a decrease in the number and size o...es we are seeing in Alaskan lakes in response to a warming climate is also occurring in Siberia," said Hinzman, who has also compared satellite data of tundra ...

Errors in the measurement of global warming corrected

...rming." Most scientists have concluded the surface warming has partly resulted from a buildup of greenhouse g...ssible in some Polar Regions. "Unfortunately, the warming is in an accelerating trend -- the climate has not yet caught up with what we've already put into th...

Environmental lessons from tsunami as world's coastal population doubles

...tal population is set to double by 2030 and global warming continues to exacerbate extreme weather conditions. The research team from Australia, US, Sweden and UK, led by Dr Neil Adger of the University of East Anglia, is calling for action that builds on the existing resilience of coastal environments and ...

Aquatic plants may hold key to advancing plant disease management

... shift in the marine flora," Schmale said. "Global warming and climate change appear to be increasing the rate at which these diseases spread and intensify," he said. The biology, ecology, and control of aquatic plant diseases in freshwater and marine environments will be addressed during the Aquatic Plant ...

Lethal needle blight epidemic may be related to climate change

... the outbreak. The records provided no evidence of warming in the affected area in recent years, but they did reveal a clear increase in summer precipitation over the past decade. That constituted a smoking gun, because D. septosporum's life cycle depends on summer moisture for spore distribution. The incre...

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