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Tag: "landscape" at biology news

New maps reveal true extent of human footprint on Earth

...ity now dominates more than a third of the Earth's landscape and has emerged as one of the central forces of global environmental change, say scientists at the Center for Sustainability and the Global Environment (SAGE) at the University of Wisconsin-Madison. Navin Ramankutty, an assistant scientist at SAGE,...

The world's deepest dinosaur finding - 2256 metres below the seabed

...e big rivers meandered through dry plains. Now the landscape has been compressed to form a pattern of fossil alluvial sand between banks of red shale. ...

Genome changes tracked during multiple myeloma initiation, progression and treatment

... into the pathogenesis that underlies MM, the full landscape of genomic events driving cancer initiation, progression, and response to treatment have remained hidden from view. Drs. Ron A. DePinho from the Dana-Farber Cancer Institute, Cameron Brennan of Memorial Sloan-Kettering Cancer Center, and John Shaughn...

Scientists discover new genetic subtypes of common blood cancer

...ked the four distinguishing gene patterns out of a landscape of many DNA alterations in the myeloma genome, the researchers report in the April issue of Cancer Cell. These results "define new disease subgroups of multiple myeloma that can be correlated with different clinical outcomes," wrote the authors, led...

Study may help slay 'Yellow Monster'

...xposure to uranium from mine tailings that dot the landscape across the Navajo Nation. "When the uranium mining boom crashed in the '80s, it really crashed and there wasn't much cleanup," Stearns said. Estimates put the number of abandoned mines on the Navajo Nation at more than 1,100. NAU senior Hertha Woo...

Afghanistan to protect wildlife and wild lands

...region's natural heritage." Afghanistan's natural landscape is dominated by the Hindu Kush mountain range and the Pamir Knot, a region where the Hindu Kush, Karakoram, Tien Shan, and Himalayan ranges come together to form some of the greatest mountains in the world. These alpine ecosystems support a surprisin...

It's all in the genes

...to address the impact of human activities, such as landscape fragmentation, on stressed ecosystems across the planet." The researchers are the first to study the genetic framework of communities and ecosystems in the wild. They have planted several experimental "common gardens" of cottonwoods in Arizona and U...

Virus has 'catastrophic' affect on red squirrels, research shows

...looked at how far red squirrels had retreated on a landscape scale, and found the annual distance was 76 square...f greys would be needed to save red squirrels on a landscape scale, researchers reasoned this approach would be costly, require complete coverage, long-term comm...

Ecosystem services and invasive species

...e will discuss her work during a poster session on landscape and ecosystem ecology. Assessing economic and ecological costs of exurbanization of forest and farmland at the wildland-urban interface on Tennessee's southern Cumberland Plateau. Tuesday, August 8, 2006, 8 ?11:30 AM, Chickasaw, Cook Convention Ce...

All the eggs in one basket

...ratio of sponge species will ultimately affect the landscape of coral reefs. The scientists say more protection is needed for the sea turtle nesting sites. "Protecting more nesting beaches is not a politically or socially simple endeavor, but it is the only way to avoid the risk of putting all turtle eg...

Asia's odd-ball antelope gets collared

... movements of saigas across this dazzling but arid landscape so that a more comprehensive conservation strategy can be developed to assure the persistence of this little known species" said WCS research scientist Kim Berger, a co-director of the study. Saigas still occur in pockets of Uzbekistan, Turkmenistan,...

Embryonic stem cells do better on bumpy nanoscale mattress

...a nano- micron scale topography; a rugged cellular landscape ranging from a few billionths to a few millionths of a meter in altitude. The HES cells in culture seemed to appreciate the bumps. A line of HES cells grown for five days on the artificial ridges and grooves kept their “stemness,?their self-ren...

End of deforestation in view? Experts advance new way to size up global forest resources

...kinhead Earth and begin a great restoration of the landscape by 2050, expanding the global forest by 10 percent ?about 300 million hectares, the area of India." "Without depopulation or impoverishment, increasing numbers of countries are experiencing transitions in forest area and density," adds Dr. Kauppi....

Math model predicts cancer behavior

...ude the oxygen and nutrient concentrations and the landscape of connective tissue that surrounds the cells. The... the middle of tumor growth, what if we change the landscape of connective tissue" "By doing this we discovered new things that we didn't know before. And that...

NASA snow data helps maintain nation's largest, oldest bison herd

...test snowpack information to park officials," said landscape dynamics expert Fred Watson, principal investigato...ulations respond to the changing conditions of the landscape where they live. Snow is a very important factor in the livelihood of all wildlife species in the ec...

Paper challenges 1491 Amazonian population theories

...ument, that the ecosystem already experienced vast landscape disturbance and proved resilient, relies on the ub... that you had big populations that transformed the landscape en masse. Another group of archaeologists say that transformation was very much limited to river cor...

Tundra disappearing at rapid rate

...etween forest and tundra ecosystems is a prominent landscape feature in both Arctic and mountain environments. As global temperatures continue to increase, the treeline is expected to advance but the new research shows that this shift will not always occur gradually but can surge ahead. "The conventional t...

Want to save polar bears? Follow the ice

...from the Wendy P. McCaw Foundation and will enable landscape ecologists to bring nearly 30 years of daily colle... could be at the crossroads," said Scott Bergen, a landscape ecologist with WCS’ Living Landscapes Program and the principal investigator for the project. "The s...

New findings challenge established views on human genome

...e way for future efforts to explore the functional landscape of the entire human genome,” said NHGRI Director Francis S. Collins, M.D., Ph.D. “Because of the hard work and keen insights of the ENCODE consortium, the scientific community will need to rethink some long-held views about what genes are and what th...

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