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Tag: "sea" at biology news

The shape of life: research sheds light on how cells take shape

...other bundle, then another bundle, until you get a sea of undulating stripes," Valles said. "What's exciting is that this finding may provide insight into how the shapes that make up the human body are created." Tang agreed: "Pattern formation is critical to the creation of life. Now we really understa...

Global warming may have damaged coral reefs forever

...s the first report to show the long-term impact of sea temperature rise on reef coral and fish communitie...new coral structures and the absence of favourable sea currents to transport the larvae could be largely to blame. Yet while a bleak picture is painted i...

UCI scientists find chlorine may contribute to ozone formation

...rine salts are naturally present in coastal air in sea salt aerosols, which are swept from the ocean into the air by the wind. Chlorine gas also is used to treat water in swimming pools, cooling towers and municipal water supplies. Chlorine atoms react rapidly with hydrocarbons and nitrogen oxides from a...

Harmful Algal Blooms monitored from space in Chile

...Chile. They deplete the concentration of oxygen in sea water, potentially killing larger caged fish such ...tration, secchi transparency, suspended matter and sea surface temperature, derived from the MERIS instrument onboard ESA's Envisat satellite and the MODIS...

Jellyfish dominate fish in over-harvested Namibian waters

By sampling sea life in a heavily fished region off the coast of Namibia, researchers have found that jellyfish have actually overtaken fish in terms of the biomass they contribute to this ocean region. The findings represent a careful quantitative analysis of what'...

Researchers appeal for new regulations to save coral reefs from live fish trade

...ing pollution, coral bleaching triggered by rising sea temperatures and over-fishing. In particular, the health of the reefs is being compromised by the live reef fish trade, a serious threat that has prompted scientists to call for tighter regulations on the exploitation of reef resources which are p...

All the eggs in one basket

...t conservation assessments of endangered Caribbean sea turtles are too optimistic, according to Loren McC... The study, "Conservation implications of historic sea turtle nesting beach loss," appears in the August issue of Frontiers in Ecology and the Environment....

Species unique to tidal marshes face threats

...ecies are vulnerable to coastal development and to sea level rise, both of which are rapidly reducing the area of tidal marshes. They are also threatened by toxic wastes and invasive species. Greenberg and his coauthors argue for an expanded research program to try to understand how species will respond...

Biological motors sort molecules one by one on a chip

...otubules are, as it were, 'crowd surfing' over the sea of small kinesin motors. A particular challenge of the research was to ensure beforehand that the microtubule tubes could be transported in a determined direction and were not dislodged by collisions of the motor carpet. PhD student Martin van den...

Pollutant haze heats the Arctic

...nversion." He notes that the thickness of Arctic sea ice "is affected by such things as how much the atmosphere blankets the surface. Sea ice is changing very rapidly in the Arctic because of surface warming. This may be one contributing factor." "The Arctic represents the front line of climate chang...

The secret lives of sea slugs

It turns out that the sea slug isn't really that sluggish after all. So says...tin. The new research is significant because the sea slug known as Tritonia diomedea, a nudibranch mollusc species found in the shallow northeast Pacific...

Mobile DNA part of evolution's toolbox

... crucial to the transition of ancient animals from sea to land, or to later key evolutionary changes in land vertebrates. The discovery is "tantalizing evidence" that copied DNA elements known as retroposons could be an important source of evolutionary innovations, says the director of the research, Howa...

Common carp sheds new light on surviving in extreme environments

...them remain submerged for long periods during deep sea dives. Similarly in humans, myglobin levels in the heart and some fatigue-resistant muscles increase when at high altitudes. New findings of myglobin levels in the common carp could help scientists understand how humans could survive loss of oxygen ...

Bacterial 'switch gene' regulates how oceans emit sulfur into atmosphere

...scovered a gene that controls whether or not these sea drifters create DMS that rises into the air. "Isolating and discovering a novel, keystone bacterium from the ocean first, and then sequencing its genome enabled this team to find the genes involved in the DMSP cycle," said Matthew Kane, program dir...

Scientists identify 36 genes, 100 neuropeptides in honey bee brains

... activities of these neurons are influenced by the sea of peptides they are bathed in. "Neuropeptides undoubtedly play a role in the bees' shift from working in the hive to foraging, displaying and interpreting dance language, and in defending the hive," said Jonathan Sweedler, a William H. and Janet L...

How many genes does it take to learn? Lessons from sea slugs

...overing that the neural processes in even a simple sea creature are far from sluggish. At any given time within just a single brain cell of sea slug known as Aplysia, more than 10,000 genes are active, according to scientists writing in Friday'...

Stormy days ahead for coral reefs

... How coral assemblages respond to the power of the sea is essential for understanding the natural distribution of coral types on present-day reefs as well as for projecting how they will change in response to more violent or frequent storms, the researchers say. "Coral reef experts have long had a g...

Steep oxygen decline halted first land colonization by Earth's sea creatures

...ebrates and arthropods again began moving from the sea to land. "It matches two waves of colonization ...breathing system used by birds. They found that at sea level birds breathe 30 percent more efficiently than mammals and at 5,000 feet in elevation birds ar...

Ocean temperature predicts spread of marine species

...Celsius), O'Connor said. Along California's coast, sea surface temperature may warm from 53 degrees to 59 degrees Fahrenheit during an El Nino year, when a warm ocean current appears in the equatorial Pacific Ocean. Larvae that travel 62 miles at 53 degrees Fahrenheit would disperse only 46 miles at 59 d...

Living laboratory found on shoreline statues

...evels of exposure to the environment, currents and sea level on marine settlements. Research leader, Dr Leonie Robinson, commented: "Although the key facts about barnacle colonisation are well known, it is rare that such a unique opportunity arises to assess all facts together in such a well designe...

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