Tag: "oceans" at biology news
1 of deep ocean's most turbulent areas has big impact on climate
...rily intense turbulence more than a mile below the oceans
surface, St. Laurent and crew used a custom-made instrument called the "turbulence profiler," outfitted with special sensors. The turbulence profiler measured the output using watts, the same unit of measurement as printed on light bulbs, St. Lau...
Proteaceae spread by continental drift and transoceanic dispersal
...roke up. They must therefore have dispersed across oceans
to reach their current distribution ranges. Barker et al. apply a technique known as molecular dating to DNA sequences from over 40 representatives of the family from all southern continents. Using carefully selected fossils that are of known age ...
What we can learn from the biggest extinction in the history of Earth
...luding carbon dioxide, low levels of oxygen in the oceans
and high levels of toxic gases. Siberian Traps ...se of these greenhouse gases would have caused the oceans
first to become acidic and then to become supersaturated with calcium carbonate. In the July Bulleti...
Study: Sticking to the sand might not be such good, clean fun for beachgoers
...closures and advisories in the 29 states along the oceans
and Great Lakes-a 5 percent increase over the previous year. The group attributed the rise to increasing coastal development, a year of heavy rainfall-which results in extra sewage runoff-and improved monitoring. NRDC began monitoring beach pollution...
Waters off Washington state only second place in world where glass sponge reefs found
...nges are found living in many parts of the world's oceans
but are composed of different species than the one...ilica dissolved in seawater, evolved in the global oceans
and began using up the silica needed by the reef-building glass sponges. The Washington and British...
International team to honor 30th anniversary of deep-sea vent discovery in Galpagos
...at hydrothermal activity must also occur on liquid oceans
already known to exist elsewhere in space (such as... that we are learning to work with in our own deep oceans
may also represent the explorers of the future searching for life in outer space," German said. M...
Marine phytoplankton changes form to protect itself from different predators
...plays a key role in the carbon cycle of cold-water oceans
may be a lot smarter than scientists had suspected. In a paper published June 11 in the online version of Proceedings of the National Academy of Sciences, researchers report the first evidence that a common species of saltwater algae also known as...
Salty oceans provide early warning for climate change
...edicted that the waters of the southern hemisphere oceans
around South Africa and New Zealand are the places to watch. Palaeoclimate data shows that the oceans
currents (like the Gulf Stream and its North Atlantic deep water partner) are capable of shifting ge...
Envisat captures first image of Sargassum from space
...he carbon dioxide emitted into the atmosphere, the oceans
have a profound influence on climate, making them major areas of interest for climate modellers. The discovery was made using the MERIS maximum chlorophyll index (MCI) which provides an assessment of the amount of chlorophyll in vegetation to pro...
NASA-funded robotic sub finds bottom of world's deepest sinkhole
...cluding the long-term possibility of exploring the oceans
hidden under the icy crust of Europa, one of Jupiters moons. For the near term, NASA recently approved a project that will use these technologies to explore underneath the ice of West Lake Bonney in Antarcticas Taylor Valley. The DEPTHX vehicle, 2....
Research finds evidence tropical cyclones have climate-control role
...orth, passing through the Pacific Ocean and Indian oceans
and past warmer latitudes warming the water brought to North America and Europe, Huber said. In the tropical oceans, this pattern must be reversed; warm, buoyant water must be mixed downward, and cold, dense water must be mixed upward. This process...
Climate change signal detected in the Indian Ocean
...that temperature changes in the Pacific and Indian oceans
can be partly explained by the effect of the 'Indo...tem of currents which transports water between the oceans
through the maze of straits and passages in the Indonesian Archipelago. "The cooling is occurring ...
Bigelow Laboratory Scientists develop new approach to study marine microbes
...ual unicellular organisms. "The microbes in the oceans
control most major chemical cycles in the biosphere, yet we know very little about how they work or who they are. Finding a reliable and economical way of accessing genomes of the uncultured microorganisms is one of the biggest challenges facing envi...
Ocean observing contracts awarded to UC San Diego and University of Washington
...ng to revolutionize not only how we humans look at oceans
and the earth, but eventually in the time of our children's children the way we manage our entire planet," commented Professor John Delaney, with the School of Oceanography at University of Washington. Said Dr. Holly Given, program director for O...
Study warns deep-sea mining may pose serious threat to fragile marine ecosystems
... could exist on thermal and chemical energy. Since oceans
have existed, more or less, since the beginning of...ning companies first turned their attention to the oceans
in the 1970s, and interest grew in manganese nodules that exist on the surface of the ocean floor. H...
NASA-funded robotic sub makes final dive to reach bottom of Earth's deepest sinkhole
...unusual hydrothermal nature is analogous to liquid oceans
under the icy surface of Jupiter's moon Europa. Technology developed to explore the sinkholes could be applied to future space probes of Europa, where scientists believe that deep cracks and holes in the ice offer a chance of finding extraterrestri...
NASA mission explores world's deepest sinkhole
...cluding the long-term possibility of exploring the oceans
hidden under the icy crust of Europa, one of Jupiters moons. The missions progress can be monitored at the Robotics Institutes DEPTHX Web site, www.frc.ri.cmu.edu/depthx , which will feature daily updates, images and graphics beginning May 15. A sc...
'Short-circuit' found in ocean circulation
... 'short-circuit' in the circulation of the world's oceans
that could aid predictions about future climate change. This process in the Southern Ocean allows cold waters that sink to the abyss to return to the surface more rapidly than previously thought. This affects the Southern Ocean circulation, whi...
Understanding the global carbon budget -- Woods Hole Research Center expert provides insights
...e only three places it can go: the atmosphere, the oceans
and land (plants and soil). The long-time effort t...or the last century may be starting to weaken. The oceans
are becoming more acidic, and we see more fires in both tropical and northern forests. If these natu...
Is climate change likely to increase disease in corals?
...ncidence of warm temperature anomalies in tropical oceans
the years ahead, these results suggest that corals in high-cover areas will be increasingly vulnerable to white disease. If the effect is large enough, the tightly woven web of life within coral reefs could begin to unravel, potentially transforming ...
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