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Tag: "warming" at biology news

Storing carbon to combat global warming may cause other environmental problems, study suggests

...bon dioxide from the atmosphere to mitigate global warming -- so called "carbon sequestration" -- could trigger environmental changes that outweigh some of the benefits, a multi-institutional team led by Duke University suggested in a new report. Those effects include water and nutrient depletion and increas...

Science's Breakthrough of the Year: Watching evolution in action

...hange?: In 2005, evidence linking humans to global warming continued to accumulate and U.S. politicians began to take notice. From the warming of deep ocean waters and increased frequencies of the most intense tropical cyclones to continued re...

ORNL leading effort to help harness power of Shewanella

...ear weapons production sites and minimizing global warming by controlling the cycling of atmospheric carbon dioxide. ...

Amazon trees much older than assumed, raising questions on global climate impact of region

... a greenhouse gas implicated in accelerated global warming and the focus of international efforts to curb its atmospheric levels. Because their trees are old and slow-growing, the Amazon forests, which contain about a third of all carbon found in land vegetation, have less capacity to absorb atmospheric ca...

Scientist measures role of science's coolest player: The snow

...That increase represents as much as a third of the warming that climate change experts have predicted, should levels of heat-trapping greenhouse gases double. "This was not just a what-if question," says Vavrus, whose work comes amidst mounting reports on the steady melt of Arctic ice. "I wanted to quantif...

Patterns in genome organization may partially explain how microbial cells work

...y patterns in geophysical data such as significant warming of the surface of the ocean off South America that causes El Niño climatic events. The wavelet analysis of bacterial genomes yielded "scalograms," maps colored to elucidate the strength of a variety of periodicities associated with chromosome positio...

Tiny polyps gorge themselves to survive coral bleaching

...'s fragile coral reefs. Scientists point to global warming as the cause and the victims are some of the tinie... to their thermal threshold, so it takes less of a warming event than it did before to cause a catastrophe." Coral are symbiontic organisms that host one-cel...

2005 was the warmest year in a century

...no. The result indicates that a strong underlying warming trend is continuing. Global warming since the middle 1970s is now about 0.6 degrees Celsius (C) or about 1 degree Fahrenheit (F). Total ...

Climate change: The rice genome to the rescue

... next 50 years. Research has confirmed that global warming will make rice crops less productive with increasing temperatures decreasing yields. "Clearly, climate change is going to have a major impact on our ability to grow rice," Robert S. Zeigler, IRRI director general, said. "We can't afford to sit back ...

Warming trend may contribute to malaria's rise

Could global warming be contributing to the resurgence of malaria in th...Pascual and coworkers showed that even such slight warming could have biological consequences. "We showed that a small increase in temperature can lead to a m...

Ancient DNA provides clues to the evolution of social behavior

...hopes to gain insights into the way current global warming trends will affect rare and threatened species, such as the colonial tuco-tuco. ''What better way to understand how tuco-tuco populations respond to environmental changes than to look at 10,000 years of their history,'' she says. ''They're the survi...

Extinctions linked to climate change

A new report that links global warming to the recent extinction of dozens of amphibian sp...nderstood as a complex relationship between global warming and major extinction of species. "This new study is a breakthrough, and the powerful synergy betwe...

Parts of the Caribbean and Central America are likely to have less summer rain

... however, that precipitation changes due to global warming have been more difficult to detect and attribute to global warming than changes in temperature. "Precipitation change is much more difficult than temperature change t...

Climate change drives widespread amphibian extinctions

...ew study provide the first clear proof that global warming is causing outbreaks of an infectious disease that...e of the journal Nature, the study reveals how the warming may alter the dynamics of a skin fungus that is fatal to amphibians. The climate-driven fungal disea...

Sociality of sweat bees evolved simultaneously during climate change

...e time. "We discovered that the Earth underwent a warming trend from 15 to 26 million years ago," Danforth said. "In modern halictid bees, social behavior varies among species and even within species as a function of latitude and altitude such that species and populations at low latitudes and in warmer regi...

Medieval diaries aid scientists ascertain increase in hot spots due to global warming

... widespread warmth, compared to all of the natural warming and cooling episodes during the past 1,200 years. The research team gathered climate change data from a number of regions in the Northern Hemisphere especially: Long life evergreen trees growing in Scandinavia, Siberia and the Rockies, which had b...

Plants used to detect gas leaks, from outer space!

...the gas distributors, but can contribute to global warming since methane has a global warming potential about 8 times that of CO2. When plant roots are starved of oxygen the stress caused to th...

Alaska seal pup diet may hold key to decline of population

...aid, including: changes in availability of prey warming ocean waters pollution increased presence of humans who may disturb the animals Herring, capelin and eulachon are good sources of much-needed fat in the diet of harbor seals, but they have decreased in numbers in some areas where seals live, Pola...

Taking evolution's temperature: Researchers pinpoint the energy it takes to make a species

...may also have a bearing on concepts such as global warming and efforts to preserve diversity of life on Earth. "We've shown that there is indeed a higher rate of evolutionary change in the form and structure of plankton in the tropics and that it increases exponentially because of temperature," said James G...

Ocean acidification threatens cold-water coral ecosystems

...-water tropical coral reefs are threatened by both warming oceans and chemical changes in seawater caused by the build-up of CO2 in the atmosphere. Above-average seawater temperatures have caused coral bleaching events throughout the world, and the calcification rates of corals exposed to more acidic conditi...

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