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Tag: "warming" at biology news

UGA study explains peaks and troughs of dengue epidemics

...ibuting to an increase in dengue epidemics. Global warming is allowing the species primarily responsible for spreading dengue (Aedes aegypti, also known as the yellow fever mosquito) to expand its range. Population growth in developing nations is pushing more people into substandard housing in mosquito-infes...

Atmospheric ozone recovering in mid-latitudes, report shows

...ed by natural variability or human-induced climate warming - rather than atmospheric chemistry. The changes in this altitude range - below the region where ozone-depleting gases derived from human activity are thought to cause ozone depletion - contribute about half of the overall-measured improvement, resea...

Antarctic Treaty Meeting moves to protect frozen continent from non-native species

...than cure." Concerned that a rapidly changing and warming climate on the Antarctic Peninsula could increase the risk of non-native species establishing themselves on the continent itself, the meeting also backed a series of recommendations made by New Zealand. These include development of a code of conduct ...

Ancient global warming drove early primates' dispersal

...y proposed and indicates that sudden, rapid global warming drove the dispersal. Researchers from the Unive...m (PETM), one of the most rapid and extreme global warming events recorded in geologic history. It was during the PETM that modern primates first appeared 55 m...

Healthy coral reefs of Madagascar resisting damage from climate change

...currents from adjacent deep ocean areas offset the warming effects of climate change. "The resiliency and health of the coral reefs with their biodiversity and endemism makes the reefs of Madagascar a high conservation priority," said Gerald R. Allen, a leading ichthyologist who conducted underwater fish su...

The vicious cycle of rainforest destruction

...phere Institute is looking at the impact of global warming on these sensitive areas. The researchers think w...y be at the start of a vicious cycle, where global warming causes the rainforests to shrink, so increasing the amount of carbon in the atmosphere, raising the ...

Slow-frozen people? Latest research supports possibility of cyropreservation

... freezing of water either on cooling or subsequent warming to room temperature. "Damage of the cells occurs due to the extra-cellular and intra-cellular ice formation which leads to dehydration and separation into the ice and concentrated unfrozen solution. If we could, by slow cooling/warming, supercool an...

Tiny airborne particles are a major cause of climate change

...also decrease cloud cover, ultimately leading to a warming effect. This occurs as black carbon absorbs part of the sun's radiation, warming the surrounding atmosphere and reducing the difference in temperature between the Earth's surface an...

Tropical forest CO2 emissions tied to nutrient increases

...ere, primarily CO2. According to the academy, the warming process has intensified in the past 20 years has been accompanied by retreating glaciers, thinning arctic ice, rising sea levels and longer growing seasons in many regions. ...

Global warming may have damaged coral reefs forever

Global warming has had a more devastating effect on some of the w...he long-term impact of the 1998 event where global warming caused Indian Ocean surface temperatures to increase to unprecedented and sustained levels, killing ...

Scientific issues associated with carbon-neutral energy sources such as cellulosic ethanol

...ed by combustion of fossil fuel, would lead to the warming of the earth," Somerville commented. "It is apparent that he [Arrhenius] was correct and that we must develop alternative sources of energy." The earth receives approximately 4,000 times more energy from the sun each year than the total projected h...

Major initiative proposed to address amphibian crisis

...al climate change, in a process that traced global warming ultimately to a catastrophic egg mortality in the western toad of the Pacific Northwest Cascade Range. Work is continuing at OSU today on contaminants and the effects of UVB solar radiation that may amplify the impacts of the fungus which causes c...

Corals switch skeleton material as seawater changes

...me when seawater is changing in response to global warming and the buildup of carbon dioxide in the atmospher...erature and acidity of our oceans ¬¬-- via global warming and rising atmospheric CO2 , respectively -- that will presumably have a significant impact on coral...

Record air pollution above the Arctic

...As a consequence, we expect significantly increase warming ", explains Dr. Andreas Herber of the Alfred Wegener Institute in Bremerhaven. Scientists of the Alfred Wegener Institute have been measuring the aerosol content of the atmosphere above Svalbard since 1991. Measurements made via the institute's aero...

Recent, rapid climate change is driving evolution of animal species

... effects of increased summer temperatures. Global warming is proceeding fastest at the most northern latitudes, resulting in longer growing seasons while simultaneously alleviating winter cold stress without imposing summer heat stress. In short, northern climates are becoming more like those in the south....

Pollutant haze heats the Arctic

...lready is known to be particularly prone to global warming caused by industrial and automotive emissions of c... doctoral student in meteorology. "The Arctic is warming very quickly, especially compared with the rest of the world, due to the greenhouse effect caused by...

UCSD study reveals how plants respond to elevated carbon dioxide

... source of uncertainty in predictions about global warming is how plants will respond to increasing atmospheric carbon dioxide. Now biologists at the University of California, San Diego have made significant advances toward understanding the mechanism plants use to regulate their carbon dioxide intake. The...

Stormy days ahead for coral reefs

...g decades. Moreover, other effects of global warming and human activity could impair reefs' capacity to bounce back from periods of high wave forces, say the researchers. These include episodes of unusually hot temperatures, which can cause corals' cells to become toxic ("coral bleaching"); and overfi...

Far more than a meteor killed dinos

...7-8 degrees warmer," says Keller. "This greenhouse warming is well documented. The temperature rise was rapid...urs, but so did Deccan trap volcanism's greenhouse warming effect and finally a second huge impact that finished them off. So where's the crater? "I wish I ...

'Fruit fly dating game' provides clues to our reproductive prowess

...7-8 degrees warmer," says Keller. "This greenhouse warming is well documented. The temperature rise was rapid...urs, but so did Deccan trap volcanism's greenhouse warming effect and finally a second huge impact that finished them off. So where's the crater? "I wish I ...

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