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Plateau in Biological News

Ocean islands fuel productivity and carbon sequestration through natural iron fertilization

... on the seas around the Crozet Islands and plateau at the northern boundary of the Southern Ocean, ... iron-rich sediments in the shallow water and the plateau area around it." Since the currents move from ... to determine how quickly the water moves over the plateau and into deeper water. The distribution of radium ...

Dung happens and helps scientists

... changes that took place on the Colorado plateau during the last 100,000 years. "Dung is ... to figure out when bison were introduced to the plateau region. Previous research suggests bison ... dating from dung, Mead knows that they roamed the plateau at least 23,000 years ago. He also curates ...

AGU journal highlights -- Jan. 28, 2008

... areas particularly vulnerable. Noting that the plateau ice caps of Baffin Island, Arctic Canada, are ... suggest that all ice caps on the island's plateau will disappear by 2070 A.D. From radiocarbon ... postglacial exposure history, shows that the plateau supported ice caps for most of the past 2800 ...

Evolution tied to Earth movement

... Rift runs about 3,700 miles from the Ethiopian plateau south-southwest to South Africas Karoo Plateau. ... the roughly 300-mile-by-300-mile Ethiopian plateau the most prominent part of the Wall of Africa. Previous research indicated the plateau reached its present average elevation of 8,200 ...

September Geology and GSA Today media highlights

... article examines climate change, Ethiopian plateau development, and human evolution. Highlights ... Nile incision on the Ethiopian Plateau: Pulsed plateau growth, Pliocene uplift, and hominin evolution ... Their results indicate that rapid uplift of the plateau began about six million years ago and was related ...

Sedimentary records link Himalayan erosion rates and monsoon intensity through time

... more," said Hodges. "The implication is that either the development of the plateau was not as abrupt as we might have thought, or that an abrupt uplift of the plateau at 8 to 10 million years caused a change in precipitation patterns that ...

September Geology and GSA Today media highlights

... separation and evidence for pedogenesis in samples from the Chinese Loess plateau spanning the past 22 m.y. Frank Oldfield et al., Dept. of Geography, ... The deep accumulations of wind-blown silt (loess) that form the Loess plateau of China provide a record of past climate changes spanning the past 22 ...

July 2008 GEOLOGY and GSA Today media highlights

... surface uplift, and right-lateral movement of the eastern Tibetan plateau relative to southeast China. Several faults are likely candidates for ... in the deep crust, and the large elevation difference between the Tibetan plateau and the adjacent lowlands probably created large stresses in the upper ...

Grand Canyon may be as old as dinosaurs, says new study

... on the nearby plateau, said Caltech's Wernicke. "Because both canyon and plateau samples resided at nearly the same depth beneath the Earth's surface 55 ... incised by an ancient river about six million years ago as the surrounding plateau began rising from sea level to the current elevation of about 7,000 feet. ...

March GEOLOGY and GSA TODAY media highlights

... Utah 84322-4505, USA. The Colorado Rivers integration off the Colorado plateau remains a classic mystery in geology, despite its pivotal role in cutting ... evolution. The upper paleodrainage apparently reached the southern plateau during Miocene time (between 23 and five million years ago), and recent ...

Iron isotopes as a tool in oceanography

... the Eel River shelf on the northern California margin (120 m water depth), and deep-sea sediments from the Southern Ocean around the Crozet Island plateau (3000� m water depth), about 1400 miles southeast of South Africa. "We are excited by our findings not only because they represent the ...

Geoscientists meet to discuss Rocky Mountain geology

... FIELD TRIP HIGHLIGHTS Utah Valley is located on the eastern edge of the Basin and Range and close to both the Colorado plateau and Rocky Mountains provinces. The Wasatch Fault, a major crustal feature, forms the eastern margin of the valley. Field trips will include ...

Genome projects launched for three extreme-environment animals

... genetic research programs, such as those that focus on physiology, taxonomy, and reproduction. The Tibetan antelope is native to the Tibetan plateau in China, and inhabits alpine meadow and desert regions at an altitude of 3,500-5,500 meters above sea level. The Tibetan antelope is the only extant ...

April 2009 Geology and GSA Today media highlights

... found on Earth, and perhaps the coarsest grained, are described in the study by Milana. The wind ripples are found in the southern Argentinean Puna plateau and reach 43 meters of crest spacing, helping fill the gap between the previously largest ripples described on Earth (over 20 meters) and the huge ...

IODP to operate 3 drilling platforms in 2009

... for specific environments. Scheduled operations will explore climate change, sea level change, the Nankai Trough Seismogenic Zone, and oceanic plateau formation. "Scientific ocean drilling is the only technique that can ground-truth surface geophysical and geological investigations," says IODP ...

Success for first outdoor, large-scale algae-to-biofuel research project in Nevada

... possible to grow algae outdoors year-round in Nevada. The pond was inoculated with a "starter" culture and then the cells grow out until they reach a plateau or stationary phase, which takes two to three weeks. The algae thrived in the outdoor pond despite nighttime temperatures that fell into the low 20s. ...

January-February GSA Bulletin media highlights

... the timing and chronology of fracturing of Middle and Upper Devonian black shale deposits, including the Marcellus Shale, exposed on the Appalachian plateau of western New York State. Specifically, the case is made that these rocks were hydraulically fractured during the Alleghanian Orogeny as a ...

Study reveals effects of unconscious exposure to advertisements

... shape of an inverted 'U', with an initial rapid rise in preference based on the enhanced probability that an object can be obtained, followed by a plateau and a gradual decrease in preference as the evidence begins to suggest that the object is overly common and thus not valuable," Changizi said. One ...

A model to measure soil health in the era of bioenergy

... "sequester," a contraction of "C sequestration" (meaning carbon storage), is a process-based model developed by ARS scientists at the Columbia plateau Conservation Research Center in Pendleton, OR. Four long-term experiments with several management systems were selected to examine the ability of ...

Paleontologists doubt 'dinosaur dance floor'

... outlined arguments against it. Chan says if the features are potholes, they are extremely unusual compared with typical potholes on the Colorado plateau and their formation still needs to be explained fully. She will work with Breithaupt and the others to examine the site in greater detail. "A ...

'Himalaya -- Changing Landscapes' photo exhibition draws attention to the impacts of climate change

... It extends more than 3500km over eight countries, from Afghanistan in the north-west to Myanmar in the south-east. The area ranges from the high plateau of Tibet and other mountain areas of China to the Ganges Basin in India, and has the upland watersheds of the ten major Asian river systems. ...

Curbing coal emissions alone might avert climate danger, say researchers

... makes fuels too expensive to extract. The final scenario looks at emissions from oil fields that peak at different times, extending the peak into a plateau that lasts from 2020-2040. The team used a mathematical model to convert CO 2 emissions from each scenario into estimates of future ...

American Chemical Society's Weekly PressPac -- July 30, 2008

... on a liquid surface without sinking. He found that as the length of the cylinder increases, the maximum load at first increases but then reaches a plateau at some critical length. After that length, the cylinder begins to bend and is not able to support more weight. Comparing the model to measurements ...

Oak Ridge pegged for national ecological network

... has two and Hawaii and Puerto Rico each have one. "Being selected as a candidate core site to represent the Southern Appalachians and Cumberland plateau domain is a reflection of the unique environmental and infrastructure qualities and the long history of excellent research conducted at Walker Branch ...

Climate change could severely impact California's unique native plants

... 40 percent of the 5,500 native plants in the California Floristic Province, which includes most of the state except for the deserts and the Modoc plateau in the northeast, and also includes parts of southern Oregon and northern Baja California. The plants assessed include individual species, as well as ...

Golfers and golf courses benefit from the use of native grasses in roughs

... receive a pre-emergent herbicide application and consequently had a lot of weed competition. The study in 2007 received a treatment of the herbicide plateau and was much taller, greener, healthier-looking grass. Some of the varieties had a hard time getting started but by the end of the growing season, ...

Study of guanacos launched in Chile

... Chile's Karukinka reserve on Tierra del Fuego to help protect the guanaco a wild cousin of the llama that once roamed in vast herds from the Andean plateau to the steppes of Patagonia. Today, the guanaco population has dwindled to perhaps half a million animals that live in highly fragmented populations ...

New organic molecule in space

... and first author of the research paper. This result was confirmed at 10 times higher spatial resolution with two radio telescope arrays, the IRAM plateau de Bure interferometer in France and the Australia Telescope Compact Array. These observations showed that all the candidate lines were emitted from ...

Dust in West up 500 percent in past 2 centuries, says CU-Boulder study

... slopes with little soil and vegetation at about 13,000 feet in elevation and are located downwind of several major U.S. deserts like the Colorado plateau and the Mojave. The site was chosen in part because the San Juans experience frequent wintertime dust deposition events -- usually between four to ...

AGU journal highlights -- Sept. 6, 2007

... in hydrogen chloride abundance from 1971 to about 1993, thought to be due to unregulated use of chemicals that destroy ozone. These abundances plateau from about 1993 to about 1997. Since 1997, values have steadily decreased, the authors show. They attribute this decrease to the success of the ...

Discovery of new cave millipedes casts light on Arizona cave ecology

... Neil Cobb, curator of the Colorado plateau Museum of Arthropod Biodiversity in the ... inventories of 30 caves on the Colorado plateau of northern Arizona, research by Wynne and Voyles ... also an associate curator with the Colorado plateau Museum of Arthropod Biodiversity, is also ...

NAU researchers chirping over discovery of new cricket genus

... of 24 caves in the monument. NAU's Colorado plateau Museum of Arthropod Biodiversity is working with ... result. Neil Cobb, curator of the Colorado plateau Museum of Arthropod Biodiversity, said the ... Wynne, an assistant curator with the Colorado plateau Museum of Arthropod Biodiversity, has two cave ...

Stretching DNA to the limit

... dose-dependent manner. The force curve of intact DNA is characterized by a plateau region. This characteristic plateau is drastically reduced in width with increasing exposure to UV light. ...

Genomic Analysis Uncovers New Targets for HIV Vaccine

... that the researchers studied. The CHAVI investigators wanted to study those patients who had many sequential blood samples taken during this plateau in viral load. Before their analyses began collaborators in the EuroChavi consortium, coordinated by Amalio Telenti at the University of Lausanne, ...

How T lymphocytes attack

... injection three or four days previously, the defenders patrolled slowly (4 micrometres per minute) and halted frequently. Their mean rate reached a plateau at 4 micrometres per minute. Then, during later stages when the tumour was regressing, most T lymphocytes resumed their rapid mobility. To ...

A giant among minnows: Giant danio can keep growing

... growth. Adult zebrafish did not exhibit increased growth or hyperplasia in response to growth hormone, suggesting that zebrafish reach a growth plateau similar to mammals and hence exhibit determinate growth. The zebrafish exhibited little hyperplastic growth after the juvenile phase. Next step ...

Ecosystem services and invasive species

... on Tennessee's southern Cumberland Plateau. Tuesday, August 8, 2006, 8 ?11:30 AM, Chickasaw, Cook Convention Center The southern Cumberland plateau supports some of the most biologically diverse ecosystems in North America, but much of the land is privately owned and not under any zoning growth ...

It's not fair! We are programmed to resist weight loss

... consultants recommend longer exercise times, higher intensity or cross training to combat it," Dr King said. "But these studies show that a plateau in body weight occurs even in the face of a continued negative energy balance." In the first study, 30 obese men and women took part in a ...

Afghanistan to protect wildlife and wild lands

... and the Waghjir Valley--all located in the high Pamirs in an area called the Wakhan Corridor--and Bande Amir and Ajar Valley, located in the Central plateau region. Other priorities in the 3-year biodiversity project include initiating a legislative review of environmental policies; developing a ...
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