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Tag: "ocean" at biology news

Evidence of 600-million-year old fungi-algae symbiosis discovered in marine fossils

...re abundant. Now, there is an example from ancient ocean life. At a site where abundant algae lived in a shallow sub-tidal environment about 600 million years ago, Yuan and Xiao found three specimens that have evidence of two partners in a familiar relationship. "Enlargements of thin-section photomicrogra...

Searching the depths of the straits of Florida for disease cures

...comprehensive review of the nation's management of ocean resources in over 30 years. It calls for sweeping changes in ocean policy including dramatic increases in ocean science funding and restructuring of government agencie...

Nature provides inspiration for important new adhesive

...cean's edge. Li observed mussels being pounded by ocean waves, and wondered how they could cling so tenaciously to rocks by their thread-like tentacles. "I was amazed at the ability of these small mollusks to attach themselves so strongly to rocks," said Li, who is an expert in wood chemistry and adhesiv...

Currents could disrupt ocean food chain

...ent ?as some scientists predict ?the effect on the ocean food chain in the Atlantic and other oceans could ...e of the first to examine what would happen to the ocean food chain if such a disruption did take place. "Phytoplankton are the basis of the entire marine f...

Scripps scientists find potential for catastrophic shifts in Pacific ecosystems

Opening the door to a new way of understanding ocean processes and managing and protecting marine resou...body of groups, from scientists who study physical ocean processes such as El Niño events to environmental managers charged with overseeing and sustaining ec...

Elephant seal pups suffer from ocean warming

...ished in the Open Access journal BMC Biology. High ocean temperatures observed from 1975 to the late 1990s ... pups. Elephant seals are shown to be sensitive to ocean temperature changes associated with both long-term 25-year cycles and short-term 3-4 year cycles suc...

To sea or not to sea: When it comes to salmon sex, size sometimes doesn't matter

... the harrowing journey taken by most salmon to the ocean and back, bypassing hazards such as dams, sharks and fishermen. "In some species, all or a fraction of the individuals in some populations do not migrate to sea at all," he says. "These fish sacrifice the growing opportunities at sea for the relativ...

Oceans more vulnerable to agricultural runoff than previously thought, study finds

...n explosions of marine algae capable of disrupting ocean ecosystems and even producing "dead zones" in the ...onclude that some highly productive regions of the ocean are much more vulnerable to agricultural runoff than was previously assumed. The study is based on ...

Advancements In Genomics Foster Deep Sea Discoveries

...a mere half of a percent is on land. Extreme deep ocean conditions include near freezing temperatures and ...has been a pioneer in researching life in the deep ocean abyss for more than 50 years. Bartlett’s studies follow the pioneering work in the 1950s of Claude Z...

Marine sponge yields nanoscale secrets

...nto the palm of your hand, and proliferates in the ocean next to the UCSB campus, said Morse. "When you remove the tissue you're left with a handful of fiberglass needles as fine as spun glass or cotton. This primitive skeleton supports the structure of the sponge, and we've discovered how this glass is ma...

Africa to take it on chin again with climate change

...rell. In the Atlantic, natural variability affects ocean temperatures more strongly, making it more difficult to attribute changes there to greenhouse-gas effects. Paleoclimate records show that even greater climate swings have occurred in Africa's monsoons, most likely related to past variations in solar...

Researchers discover underwater volcano

...urface that it could provide a potential hazard to ocean navigation and coastal communities. Such hazards may include the explosive reaction between red-hot lava and seawater, or tsunamis that may be caused by the collapse of the newly built volcano. "It is a good idea for us to keep our eyes on this area...

Anammox bacteria produce nitrogen gas in oceans' snackbar

... that anammox bacteria are present in the Atlantic ocean in oxygen poor waters at ~100 m depth. The number ...ean. The discovery of anammox bacteria in the open ocean has major consequences for our understanding of the global nitrogen cycle. Models of global nitrogen...

Study reveals new technique for fingerprinting environmental samples

...ale skeletons collected from the Pacific and Artic ocean depths separated by thousands of miles. The DNA was then sequenced and analyzed by the JGI. While different environments present different metabolic pictures, this research, Rubin said, facilitates a holistic perspective on environmental systems, som...

NASA study finds snow melt causes large ocean plant blooms

... creating conditions for more widespread blooms of ocean plants in the Arabian Sea. The decrease in snow c...re differences generate monsoon winds that mix the ocean water in the Western Arabian Sea. This mixing leads to better growing conditions for tiny, free-floa...

Solutions that reduce death of marine life reeled in by International Smart Gear Competition

... the ocean's been to me, we're all dependent on an ocean full of life and, in turn, it's dependent on our actions," said grand prize winner Steve Beverly, fisheries development officer for the Secretariat of the Pacific Community. "It's just common sense to create smarter fishing gear." An international p...

Survey finds silver contamination in North Pacific waters

... of silver contamination ever observed in the open ocean turned up in samples collected during a survey of ...rry atmospheric pollution across the North Pacific ocean from China, where coal is the primary fuel and the use of emissions controls is limited. Major pollu...

Flocking together: Study shows how animal groups find their way

...g robots that explore remote locations such as the ocean or other planets. "When you see apparently complex behaviors, the mechanisms that coordinate these behaviors may be surprisingly simple and generic," said Iain Couzin, a postdoctoral researcher in Princeton's Department of Ecology and Evolutionary B...

New online portal merges vast data on Gulf of Maine ecosystem

...irst-in-the-nation marine buoy system that reports ocean conditions in real time, and the Gulf of Maine Oce...Atlas will serve as a pilot for a truly integrated ocean observing system, called the Gulf of Maine Biogeographic Information System. Over time the Census of...

Ice core 'dipstick' indicates West Antarctic ice has thinned less than believed

... at Siple dome, so ice must have flowed toward the ocean with a very gentle slope for more than 600 miles. An ice sheet with such a low profile and gradual decline would have had to have a very slippery bed to maintain its continuous flow, Waddington said, and it appears the ice flowed vigorously despite b...

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