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Tag: "sea" at biology news

Biologists call for better choice of model organisms in 'evo-devo'

...lected dozens of new model organisms, ranging from sea anemones to dung beetles, to study. One of the selection criteria deemed most crucial is the phylogenetic position of prospective model organisms, which reflects their evolutionary relationships. Phylogenetic position is employed in two commo...

US conservation efforts bring more marine turtles to UK

...land, Wales, Devon and Cornwall. The decline of sea turtles has led to a global protection effort. Mea...ew Witt concludes: ‘The increase of turtles in the sea around the UK could be indicative of a global trend. We need more research to verify this, but the r...

Volcanic eruptions, ancient global warming linked

...ars ago and a period of global warming that raised sea surface temperatures by five degrees (Celsius) in ...ughly 220,000 years. In addition to the warming of sea surface waters, this event ?characterized by scientists as a "planetary emergency" ?also greatly inc...

Satellites shed light on global warming

...and glaciers has the potential to greatly increase sea level, researchers are looking to the cryosphere t...02 has been equivalent to about 2 percent of total sea level rise, which, although not a significant percentage, demonstrates the vulnerability of ice shel...

Fish growth changes enhanced by climate change

...rates. In the south west Pacific east of Tasmania sea surface temperatures have risen nearly two degrees, based on the results of a monitoring program at Maria Island. Coinciding with this has been a southward shift in South Pacific zonal winds which has strengthened the warm, poleward-flowing East Aus...

Ocean's 'twilight zone' may be a key to understanding climate change

... or tubes that hang beneath buoys or float up from sea floor. That, Buesseler said, "is like putting out a rain gauge in a hurricane." While many studies have investigated the surface of the ocean, little research has been conducted on the carbon cycle below. The VERTIGO team examined a variety of pro...

Baby fish 'smell their way home'

... way to their home coral reef across miles of open sea by using their sense of smell. Remarkable in itse...Reef and underpins the spectacular richness of its sea life, Prof. Kingsford says. "This genetic separation between reefs may be what gives rise to so many...

Microfossils unravel climate history of tropical Africa

... of the techniques currently used to estimate past sea surface temperatures, is based on organic molecule...ogical properties. When such molecules sink to the sea floor and are buried in sediments where oxygen does not penetrate, they can be preserved for thousan...

Turtles are loyal in feeding as well as in breeding

...eter has discovered that, after laying their eggs, sea turtles travel hundreds of miles to feed at exactl...ites. Green turtles have been observed cropping sea grass gardens to encourage new growth, so there could be a benefit to them returning to foraging gro...

Deep in the ocean, a clam that acts like a plant

...ients required by the clam. Studies of the deep sea have implications for studying the origins of life, Eisen said. Life on Earth may have got its start with microbes living on such chemical reactions, before the evolution of photosynthesis. "And they’re just plain interesting," Eisen added. If ...

Stanford scientists make major breakthrough in regenerative medicine

...chers show that a human evolutionary ancestor, the sea squirt, can correct abnormalities over a series of...cessful. If the genetic sequence described in the sea squirt applies to humans, this study represents a major step for regenerative medicine. The sea ...

Long-lived deep-sea fishes imperiled by technology, overfishing

... and Patagonian toothfish, better known as Chilean sea bass. In the deep ocean off the Pacific Northwest,...deep-sea environments are usually stable. The deep sea is almost completely dark, very near freezing and has very little food ?reasons for the fishes' slow...

Gene chips forecast ecological impacts of climate change

...sco on Sunday, Feb. 18. Her research centers on sea urchins and mussels, important members of marine ecosystems. The main focus will be on finding ways to assess the effects of temperature stress and low pH, due to ocean acidification, on adults and early developmental stages of marine invertebrates. ...

Antarctic warming to reduce animals at base of ecosystem, shift some penguin populations southward

...ls predict will do more harm than simply raise the sea levels that most observers fear. It will make dras...enguin populations southward down the peninsula as sea ice lessens along its margins," Lyons said. "Gentoo and chinstrap penguins are shifting south into a...

Bats prey on nocturnally migrating songbirds

...ognized hazard adds to the numerous obstacles that sea and desert crossings already represent for fragile migratory passerines. Actually, the newly uncovered danger comes from the deep black sky, in the form of a 45 cm wing-spanned aerial-hawking mammal, equipped with sharp canines and an efficient radar...

Biologists prove critical step in membrane fusion

...Wessel lab are experts in fertilization; they used sea urchin eggs to study membrane fusion. In urchin eg...evelopmental Cell. "When using the right cell ?the sea urchin egg ?the phenomenon is observable." "What we’ve found here with membrane fusion is that ev...

Warming oceans threaten Antarctic glaciers

...ur Antarctic glaciers that pose a threat to future sea levels using satellite observations, according to ...hat Antarctica and Greenland were having on global sea level in a comprehensive evaluation of the Earth’s ice sheets. They found that together these two ic...

Are we killing the world's oceans?

...w will global warming affect ocean circulation and sea levels in the centuries to come? Are we destroying the world's coral reefs? Why are dead zones in the oceans on the rise? Can aquaculture be environmentally sustainable? And how are we all to blame for the collapse of coastal fisheries? Most importa...

UTSA researchers examine effects of global warming on Antarctic

...mate Change report citing the detrimental loss of sea ice sheets in the Arctic due to global warming ec..., the ship passed through 1,700 miles of extensive sea ice cover that surrounds the continent annually. "We now know what the sea ice really looks like...

Study finds surfing safer than soccer

...es increases as it grows in height. In addition, a sea floor with a sandy bottom is much more forgiving upon impact than one covered with reefs or rocks," says Nathanson. The paper cites that establishing an injury rate for surfing is not just of academic or general interest, but also has implications...

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