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Tag: "sea" at biology news

UCSB scientists probe sea floor venting to gain understanding of early life on Earth

...ormed four billion years ago. Conditions below the sea floor may most closely mimic the environment when ...tions of hydrothermal activity at two sites on the sea floor to the west of Central America are reported by Haymon, lead author, and three other UCSB geolo...

Antarctic ice shelf retreats happened before

...00 years ago the ice shelf retreated, allowing the sea to flood into the lake. The ice shelf didn't refor...West Antarctic Ice Sheet, and a consequent rise in sea level. ...

The secret to longevity in tubeworms

...an incredible lifespan of up to 250 years the deep sea tube worm, Lamellibrachia luymesi is among the lon...tium of bacteria and archaea that live in the deep sea cold sediments surrounding the seep where the worm lives. These chemoautotrophs use energy from hydr...

The secret lives of whales

...he last one ?which is us,?says Palumbi. “Ice ages, sea level change and even loss of local food sources d...sea, place a transponder on it, and drop it to the sea floor. The transponder lets them find it later with a manned submersible or robotic vehicle. They n...

Researchers reveal the infectious impact of salmon farms on wild salmon

...y of science) shows that the transfer of parasitic sea lice from salmon farms to wild salmon populations ...o isolate and measure the impact of a fish farm on sea lice outbreaks in wild salmon. The study combined new field techniques that allowed comprehensive, i...

In the sea slug's defense against lobsters, confusion is key

...ike many other marine creatures, Aplysia, a common sea slug, enlists chemical defenses against its predat...fense. When attacked by predatory spiny lobsters, sea slugs (also known as sea hares) release an inky secretion, termed ink and opaline, from a pair of gl...

Essential mangrove forest threatened by cryptic ecological degradation

...angroves, forests thriving at the edge of land and sea that are ecologically and socio-economically important for local people in tropical countries on all continents. Using biology, geography, hydrology, socio-economic interviews, and 18th-century history, an international team led by Dr. Farid Dahdouh-...

ASU researchers finds novel chemistry at work to provide parrot's vibrant red colors

...y to us ?one we want to investigate." "There is a sea of colors in birds," he added. "Our goal is to learn why there is such a diversity from an evolutionary standpoint." ### To access a selection of print quality photographs of several parrots species, go to: http://www.asu.edu/news/newsroom/PhotoGal...

Transport System Smuggles Medicines Into Brain

...y to us ?one we want to investigate." "There is a sea of colors in birds," he added. "Our goal is to learn why there is such a diversity from an evolutionary standpoint." ### To access a selection of print quality photographs of several parrots species, go to: http://www.asu.edu/news/newsroom/PhotoGal...

Introduced foxes transformed vegetation on Aleutian Islands from lush grasslands to tundra

...ry as a way to supplement the declining harvest of sea otter pelts. But the practice escalated between the 1890s and the 1930s, when the U.S. government worked to establish fox farming businesses on the islands. Mostly arctic foxes and smaller numbers of red foxes were introduced to more than 400 islands...

Scientists discover unique microbe in California's largest lake

... Its current elevation is about 227 feet belowmean sea level, its maximum depth reaches 51 feet and its total volumeis about 7.5 million acre-feet. It was formed in the early 1900s, whenflow from the Colorado River was inadvertently directed to the SaltonBasin. Once the Army Corps of Engineers returned t...

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

Rising sea levels 20,000 years ago, as the last ice age was b...it couldn't have contributed as much to the higher sea level. In an area called Siple Dome, the ice sheet currently rises 1,000 meters -- more than half a...

Unexpressed But Indispensable -- The DNA Sequences That Control Development

...sh, but not in the nematode, fruitfly, or even the sea squirt, a primitive non-vertebrate chordate. CNEs are not spread uniformly throughout the genome. Instead, they are bunched together in fewer than 200 clusters, most of them in close proximity to genes implicated in transcriptional regulation or dev...

Scientists discover how fish evolved to float at different sea depths

...owing the fish to float at different levels in the sea without coming to the surface of the water for air. A similar system is also present in the eye of the fish, which provides oxygen to the retina. Dr Berenbrink explains: "I am interested in how the mechanisms in the swimbladder and eye could have ev...

Low level of extinction during ice age linked to adaptability

...d to endure severe fluctuations in temperature and sea levels. Those that were not died in a mass extinct...tion and extinction in brachiopods, simple shelled sea creatures that were abundant and well-fossilized during the Paleozoic. He constructed a database tha...

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

... and killing of marine mammals, juvenile fish, and sea turtles that become ensnared by fishing nets and l...lity for fishermen, and preserve the bounty of the sea for future generations. Today, I'm happy to announce our competition reeled in three promising innov...

NASA study finds snow melt causes large ocean plant blooms

...he land and ocean during summer. As a consequence, sea surface winds over the Arabian Sea have strengthened leading to more intense upwelling and more widespread blooms of phytoplankton along the coasts of Somalia, Yemen and Oman. According to Goes, while large blooms of phytoplankton can enhance fisher...

Study reveals new technique for fingerprinting environmental samples

...ial are over represented in soil and absent in the sea water, while in sea water, genes involved in the passage of sodium, a major chemical component of salt water, were parti...

Researchers discover underwater volcano

...th of approximately 200 meters-close enough to the sea surface 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...

Grizzlies set to invade high Arctic?

...e Arctic Circle. "We know grizzlies go out on the sea ice to hunt seals, but no one has ever seen one th... more sightings for barren-ground grizzlies on the sea ice in the Arctic from the Beaufort Sea to Hudson Bay. They're also known to be able to survive the ...

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