Tag: "oceanic" at biology news

Scientists chart iron cycle in ocean

...exes. "We determined that iron bound to the oceanic siderophores react to light," said chemist Alison ...hese microscopic plants and bacteria cope in these oceanic environments," said oceanographer Ken Bruland of the University of California at Santa Cruz. ...

Researchers find glass-eating microbes at the rock bottom of the food chain

...cean bottom. In the upper 300 meters of the earths oceanic crust, microbes were found to have literally eaten...erations lead to chemical interactions between the oceanic crust and seawater, influencing important chemical cycles on the earth, including the carbon cycle t...

Rafting rodents from Africa may have been ancestors of South American species

...lonized South America from Africa by rafting along oceanic currents connecting the two continents, Honeycutt says. The novelty of this research pertains to the use of molecular techniques to address evolutionary questions posed decades ago primarily by paleontologists. "Recent discoveries in molecular evolut...

Researchers zero in on date of early hominids

...urnal Geology. Shaul Levi, a professor emeritus of oceanic and atmospheric sciences at OSU, and Hagai Ron, an Israeli geophysicist, were able to narrow down the range of ages for the formation by studying the reversals of the Earth's magnetic field recorded in the sedimentary formation. "The Earth's magneti...

Ocean frontier revealed: scientists to describe unexpected discoveries of arctic research cruise

... The Arctic Ocean is one of Earth's least explored oceanic frontiers. Last summer, a research team aboard USCGC Healy, the U.S. Coast Guard's newest icebreaker, exceeded its most ambitious hopes to map the ocean's floor and reveal geological and biological features of the underwater Gakkel Ridge. Despite p...

December Media Mighlights: GEOLOGY and GSA TODAY

...llera have been interpreted as displaced pieces of oceanic crust. In this paper the authors examine gravity and magnetic data that show that one such package of mafic rocks, located in the Noatak region of the western Brooks Range, Alaska, is deeply rooted within the crust. In addition, the authors suggest ...

January media highlights: GEOLOGY and GSA TODAY

....y. history. The researchers suggest that rates of oceanic crust formation were very fast on two of the three...late boundaries during this period. Rapid rates of oceanic crust formation have been suggested as a cause of elevated sea level and atmospheric temperature dur...

January media highlights-GSA Bulletin

...he Caribbean, and insights into the composition of oceanic crust based on a global survey of Precambrian ophi...s ophis--snake, and lithos--rock) are fragments of oceanic crust and mantle formed at spreading centers and preserved on land. Ophiolite studies provide crucia...

Media Advisory 2 - 2002 Ocean Sciences Meeting: press conferences scheduled

...now seeing the ocean from the perspective of large oceanic animals including seal, whales, and turtles. These large migratory animals find that most of the North Pacific is unproductive. They are more wide ranging than previously thought, but feed primarily in a small number of very specific areas. For examp...

Genomic tools reveal new microbial phototrophs in the ocean

...diverse groups of photosynthetic bacteria found in oceanic plankton. Its an exciting time for microbial ocea... from the sun into nourishment for the rest of the oceanic food web, said Ed DeLong, leader of the research group. The genomic libraries of oceanic microbes we...

NSF to support study of environmental warming in the Arctic

...disciplinary studyof the interrelated atmospheric, oceanic and terrestrial changesin the Arctic and their potential impacts on the environment,regional societies and economies. In funding the study, NSF isacting on the Arctic Research Commissions recommendation for along-term study of the causes and consequ...

February media highlights - GSA Bulletin

...t 110 million years ago to today). The intervening oceanic crust progressively deformed and accreted to the c...ic conditions, we discuss the nature of the second oceanic domain (the Valaisan) and its geodynamic significance in the Alpine evolution. So we show first that...

Rock-eating microbes survive in deep ocean off Peru

...face environments, such as methane rich and normal oceanic environments. Jay Miller is the ODP project manag...crobial biosphere of deep marine sediments and the oceanic crust," Baldauf said. "The growing international interest in the subsurface biosphere is driven by ...

Common microbes survive pressures equal to those found at 50 kilometers inside the Earths crust

...vironments such as high-pressure, high-temperature oceanic hydrothermal vents or in the ice sheets of Antarctica. A study published in the February 22, 2002, issue of Science, however, shows that even common bacteria are viable under high-pressure conditions equivalent to about 50 kilometers beneath the Eart...

Office of Naval Research awards $8.4M to young investigators

...on models that describe the global distribution of oceanic mixing. Dr. Alexander A. Balandin, Electrical Engineering, University of California, Riverside will conduct an experimental and theoretical investigation of heat conduction in Galium Nitride and Aluminum Galium Nitride heterostructures on Silicon Car...

URI scientists study life buried deep beneath the ocean floor

...ntly identified abundant bacteria in deeply buried oceanic sediment. Microorganisms have been recovered from ...udy relied on this knowledge to identify two broad oceanic provinces of deeply buried microbial activity. One province covers most areas of the open ocean. In ...

April GEOLOGY and GSA TODAY media highlights

...y. Such an accretionary prism forms when pieces of oceanic crust and overlying sediments are scraped off a subducting oceanic slab and are dumped into a trench in the throat of a subduction zone. The Mazar accretionary prism d...

May media highlights: GEOLOGY and GSA TODAY

...10-1002, USA. Pages 443-446.Streams of mountainous oceanic islands, such as New Zealand and Taiwan, are sources of large amounts of suspended organic matter to the oceans. The short length, steep gradient, and mass wasting enable these rivers to transport water and sediment quickly from the mountains to the ...

Ships return to the southern ocean to enhance understanding of food chain

...f the survey area. The Palmer will conduct a wide oceanic survey at points along a fixed grid and will collect data along the grid lines. The Gould will spend four to five days at each of five stations in strategic locations....

Ecologists simplify population theory

...d types over their lifetime. These animals include oceanic and freshwater fish, bears, badgers and other mammals, many birds, and invertebrates like crabs. Populations of such species live in complex food webs. "Nature is notoriously complex," said William W. Murdoch, first author of the paper and a profess...

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(Date:4/14/2014)... orphaned by HIV/AIDS in South Africa may provide insight ... behavior issues in other areas of the world, which ... that could lead to successful interventions. , A ... United Nations mentions that due to the HIV/AIDS pandemic, ... African, children are at an increased risk for mental ...
(Date:4/14/2014)... A new study shows that moderate to severe ... risk of stroke, cancer and death. , Results of ... to severe obstructive sleep apnea were four times more ... times more likely to have a stroke (HR = ... (HR = 3.4), and 2.5 times more likely to ...
(Date:4/14/2014)... Dallas study involving serious youth offenders, the answer to one ... seven years: "How long do you think you,ll live?", According ... offending over time., Author Dr. Alex Piquero said the study ... of them offend at very high rates and commit more ... much later in life offend much less., "In a lot ...
(Date:4/14/2014)... with symptoms increasing dramatically during some of the most important ... has found. , Depressive symptoms increased on average by 68 ... young men, who were around 25 years old when they ... their children. The results of the study were published April ... is the first to identify when young fathers are at ...
(Date:4/14/2014)... Lower weight babies and babies who aren,t breastfed ... risk of developing chronic inflammation and related health ... study. , "There were good reasons to hypothesize ... inflammation in adulthood," says Thomas McDade (Northwestern University), ... in the Child & Brain Development program. "It ...
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