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Tag: "ocean" at biology news

World-first technology enables study of ancient bacteria

...to investigate sustainable energy sources from the ocean bed by isolating ancient high-pressure bacteria from deep sediments. Scientists and engineers at Cardiff University are investigating bacteria from deep sediments which despite high pressures (greater than 1,000 atmospheres), gradually increasing te...

Ships bring alien jellyfish invaders to our shores

...h. Using genetic data and computer simulations of ocean currents and water temperatures, researchers from the University of New South Wales and the University of California, Davis, have revealed that the moon jellyfish could not have migrated naturally, according to a report in today's Proceedings of the ...

Virginia Tech, Nanjing Institute researchers discover half-billion year-old fossils

...at they were flat-lying organisms sprawling on the ocean floor 550 million years ago, much like some fungi,...may stop at the seemingly similar life position on ocean floor. "In fact, the morphology of the new fossils is unlike any living macroscopic life," Xiao said...

Use of high hydrostatic pressure to inactivate Hepatitis A virus in oysters studied

...d technologies to help use, manage, and understand ocean and coastal resources. Virginia Sea Grant funds marine science research in aquaculture, seafood safety and quality, marine resources, coastal ecosystems through a competitive, peer-reviewed grant proposal process. In addition to its core programs, Vi...

Genetics links whale to two different ocean basins

...tudy has followed a single humpback whale from one ocean basin to another, adding to traditional notions of...continent. "While the movement of whales from one ocean to another has always been a possibility, it's quite difficult to track in the wild," said WCS resea...

Microbe has huge role in ocean life, carbon cycle

... coast might contain 500,000 of these cells. "The ocean is a very competitive environment, and these bacte...lates to the ebb and flow of organic carbon in the ocean surface. Molecular probes, gene cloning, sequencing techniques and other tools have been used in thi...

Envisat and ERS-2 reveal hidden side of Hurricane Rita

...catter, which is a measure of the roughness of the ocean surface. On a basic level, bright areas of the rad...ter reflected up again. Wind-driven ripples on the ocean surface modify the radar backscatter, and as the energy in these ripples increases with wind velocit...

Industrial contaminants spread by seabirds in High Arctic, new Canadian study shows

... Our study shows that sea birds, which feed in the ocean but then come back to land, are returning not only...parts of the globe, and are transported by air and ocean currents toward cold areas like the Arctic. "Some chemicals will build up in the food webs that com...

'Sinkers' provide missing piece in deep-sea puzzle

... a sinker even hitting a sediment trap in the open ocean are extraordinarily small. In addition, sinkers often simply disintegrate when they contact a solid object. So either the scientists were not seeing sinkers at all, or if they did see them, it was in the form of a big glob in the bottom of the sedime...

Structures of marine toxins provide insight into their effectiveness as cancer drugs

... a lab instead of harvested from the depths of the ocean floor, meaning that the drugs can be engineered to be as effective as possible. "In order to chemically synthesize a better drug, it is a good idea to know how the natural compound works," he says. "Scientists who study natural products take their ...

Discovering an ecosystem beneath a collapsed Antarctic ice shelf

... Geophysical Union. "Seeing these organisms on the ocean bottom--it's like lifting the carpet off the floor... baseline for researchers to probe portions of the ocean floor that have been undisturbed for nearly 10,000 years. The researchers speculate, for example, th...

Study casts doubt on 'Snowball Earth' theory

... drill core does not prove that large parts of the ocean remained free of sheet ice during the pre-Cambrian glaciation. It is statistically unlikely but possible, Olcott said, that the drill core found one of the tiny "refugia" for marine life whose existence is allowed under the "Snowball Earth" hypothesi...

Stem Cells to Solve the Blood Shortage Problem?

...known to offer some protection against destructive ocean events, such as tsunamis and (far more frequently) tropical cyclones, but they have not always been valued for that function. Economic and political interference, driven by short-term benefit, has been responsible for the destruction of thousands of ...

Could better mangrove habitats have spared lives in the 2004 tsunami?

...known to offer some protection against destructive ocean events, such as tsunamis and (far more frequently) tropical cyclones, but they have not always been valued for that function. Economic and political interference, driven by short-term benefit, has been responsible for the destruction of thousands of ...

Researchers use 3-D imaging system to unveil swimming behavior of microscopic plankton

From the surface, the ocean appears to be vast and uniform. But beneath the su...zooplankton are swept into clusters and patches by ocean currents. The very survival of many zooplankton predators--from invertebrates to whales--and the suc...

By creating molecular bridge, scientists change function of a protein

...have forged a successful pathway through a complex ocean of barriers: They've changed the function of a protein using a co-evolution approach. In a study to be published in the Journal of Molecular Biology, doctoral student Zhilei Chen and Huimin Zhao, a professor of chemical and biomolecular engineering,...

Ocean climate predicts elk population in Canadian Rockies

... mammal population. Based on many climate-related ocean measurements, researchers are able to determine positive, average and negative NPO values. A positive NPO translates into a milder climate in most of western North America, but it means more severe weather in the mountain regions, where climate is mo...

Scientists discover global pattern of big fish diversity in open oceans

...ownward trend in the diversity of fish in the open ocean ?the largest and least known part of our planet. T... and highlight a surprising global pattern of open ocean hotspots - areas with predictable congregations of tuna, marlin, swordfish, and other ocean predator...

Census of Marine Life explorers surprised by diversity, density of Arctic creatures

...e Canada Basin is one of the world's most isolated ocean areas," says Dr. Rolf Gradinger, head of the Arcti... Arctic waters, the most under-studied area of the ocean world." Baseline data about such long-inaccessible marine species will have growing importance for ...

Climatologists discover deep-sea secret

...rdiff University has shown for the first time that ocean circulation in the southern hemisphere has, in the...ica is greatly influenced by the gulf stream. This ocean current carries warm water from the Gulf of Mexico northwards along the Florida coast, eastwards acr...

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