Tag: "climate" at biology news

El Niño triggers tropical forest reproduction

...ity, which has intensified the effects of regional climate change. From 1985 to 1999, Curran and her colleagues studied Dipterocarpaca---the main family of rain forest canopy trees in Indonesian Borneo. Field research covered a 57-square-mile area, but focused on six square miles in the Gunung Palung...

Bacteria may thrive in Antarctic lake

...self. Ice cores have helped scientists assemble a climate record stretching back more than 400,000 years. Sediment samples from the bottom of Lake Vostok could extend that record to cover millions of years. "There are other, compelling reasons to go into the lake," Karl concluded....

Evidence of bacterial life found in deepest-yet Antarctic ice-core

...tion, the Antarctic ice cores provide a continuous climate record stretching back more than 400,000 years. Ob...es from the bottom of Lake Vostok could extend the climate record to cover millions of years. Both Karl and Priscu receive research funding from the Nationa...

One theory solves two ancient climate paradoxes

...blem if it proves to be correct. "I looked at the climate problems in the Archean, 3.8 to 2.5 billion years ...e high obliquity solution to understanding Archean climate and the faint-young sun paradox," and "Climate model solutions to late Proterozoic glaciation," writ...

Human stem cell research leads Science's top ten list of the best scientific advances in 1999

...re to continue, new federal rules suggest that the climate for embryonic stem cell research may be beginning to thaw. And there are few ethical concerns regarding stem cells from adults, which may also provide fodder for important therapies. These cells, which supply new cells to parts of the body with high...

Fertilizers linked to amphibian deaths

...ogen fertilizers - along with habitat destruction, climate change, pollution, pathogens and introduced predators - is probably another part of the answer to an international mystery that has alarmed ecologists around the world. But this latest part of the puzzle goes to the heart of crop agricultural practi...

Past climate change effects on mammals may mirror global warming impact

A thousands-of-years-old peek at the effects of climate change on small mammals in the western United Stat... global warming on animal populations. When the climate of the Great Basin of the western U.S. shifted dramatically and became more arid between 8,300 and 5...

NASA'S Earth Science highlights for the 80th Annual AMS Meeting

...ence local rainfall, more work is needed on global climate models before they can produce accurate simulation... - A new approach to modeling regional impacts of climate change produces accurate simulations of the 1993 U.S. floods and 1988 drought. Michael Fox-Rabinovi...

We are not alone - or are we?

...distance to stabilize tilt, thus ensuring seasonal climate fluctuations that are not too severe. Enough carbon to support development of life but not so much to allow for runaway greenhouse conditions. In addition, Brownlee and Ward contend, the solar system's position in the Milky Way galaxy also is key to...

Today's Science for America's Tomorrow: the USGS FY 2001 Budget

...orld; and expanding current research on impacts of climate and land use in the Lower Mississippi. Along the Missouri River, the USGS will work to develop predictive models and data standards that make it easier to integrate a wide range of data used in local decision support systems. America's Natural Heri...

Droughts worse than the 1930's likely in the 21st century

...lobal-warming. The existence of extreme, global climate changes provides a clue to the future, says Dr. Br...hould be prepared for naturally-occurring, extreme climate changes that will provoke water shortages in the future," says Dr. Cumming, who co-authored the stud...

Complex mystery of amphibian decline calls for a new kind of science

... or predation by introduced species, pollution and climate change. Unfortunately, even all these diverse fact...n to operate," Collins said. "One factor is global climate change, but we're also seeing the increasing homogenization of the world's fauna and flora, as organ...

The future of planet earth: scientific challenges in the coming century

... looking at potential future changes in hydrology, climate and vegetation patterns, and storm effects on coastal systems. More information about global change is available at geochange.er.usgs.gov or contact USGS scientist Elliot Spiker at 703-648-5330. For more information about glaciers, contact USGS s...

Scientist find clues to different warming rates

...ce and in the lowertroposphere has intensified the climate change debate. Some havepointed to the surface dat...rt from a team of scientistsacross the spectrum of climate change positions that partlyreconciles the differences in data sets and offers some explanationof wh...

Link between climate change, amphibian declines explored

... said they will continue to look for links between climate change and amphibian mortality. A professor in CU...recently, disease, may be indirectly influenced by climate and environmental factors. The results of the study were presented at the annual American Associ...

Fossil plants' ties to ancient carbon redefined

... probe the links between fossil plants and ancient climate change and potentially help scientists gain new insight into climate change today, researchers at The Johns Hopkins University and the University of California-Berkeley ...

Record breaking temperatures seen as evidence of faster rate of global warming

...strong evidence, they say, that the faster rate of climate change since 1976 is human-induced. Given the stea...nducted to enable society to minimize the risks of climate change and prepare for more, and perhaps even more rapid, changes to come....

Colorado State and international scientists say loss in biodiversity by year 2100 could be consequence of global changes

...human-caused global change--and global warming and climate change aren't necessarily the principal factors. ...stant professor of biology. Global warming and climate change aren't necessarily the principal factors in the loss of biodiversity anticipated over the nex...

Do US ecosystems balance US fossil fuel use?

...l. The carbon cycle is the main driving force of climate change, and for decades, researchers and policymak...s Project, show that increasing carbon dioxide and climate trends result in small uptake of carbon - only a tenth of what the atmospheric analyses suggest. A...

Study points to U.S. as generator of greenhouse gases

...son said, direct evidence and various computerized climate models make it increasingly clear that global warm...tting increasingly accurate." The impact of these climate changes may be profound, researchers say, ranging from drought and massive fires to dramatic changes...

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