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Tag: "sea" at biology news

Coral reefs are increasingly vulnerable to angry oceans

... 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, according to the researchers. "Our study offers a solution t...

New dwarf buffalo discovered by chance in the Philippines

...ns was frozen in glaciers, resulting in much lower sea levels--about 400 feet lower. Because of this, som...nces between islands. Once the glaciers melted and sea levels rose, these mammals became isolated on their respective islands. Over the years, they evolved...

Microbe fixes nitrogen at a blistering 92 C

...te and other products that can be used by land and sea plants, which in turn are eaten by higher animals....fferent nitrogen isotope ratios than non-vent deep sea animals. The work that led to FS406-22 was supported by Washington Sea Grant, based at the UW, and...

Tiny bones rewrite textbooks

...letely submerged, as some scientists thought, when sea levels were high about 25 to 30 million years ago." The team believes that more mammal specimens may emerge, perhaps even species that pre-date the split between pouched marsupials and live-bearing placental mammals. The St Bathans fossil field -...

Climate experts search for answers in the oceans

...mate change by helping us to better understand the sea surface temperature story." Phytoplankton, mi.... "The risk is that we may find the warming of the sea and the modification of the water circulation patterns may cut off or modify some of that primary pr...

Seals protect brain, conserve oxygen by turning off shivering response on icy dives

...plained. Seals often spend 80-90% of their time at sea underwater, he said. Seals in the wild occasionally dive for so long that they use nearly all their oxygen, but they can recover with these special adaptations. Humans cannot tolerate oxygen levels nearly so low as a seal can. "Somehow they tol...

First Biodiversity Census of coral reef ecosystems in the NW Hawaiian Islands

...gae and macroinvertebrates (lobsters, large crabs, sea urchins). This expedition is unique in focusing pr...cryptic small invertebrates (tiny crabs, mollusks, sea slugs, worms and more), algae, and microbes over a range of habitats at French Frigate Shoals. Alth...

Scientist's persistence sheds light on marine science riddle

... "We know there is less food available in the deep sea than in shallow water, but the area of the deep sea is much larger. Also, the competitors and predators of a species often don't reach an island, but co...

Ocean seep mollusks may share evolutionary history with other deep-sea creatures

... of oceanic cold seeps--strange clams, mussels and sea snails that thrive in the sulfur and methane-rich ...nt is much more challenging, subject to changes in sea levels, extinction events, pollution, sediment runoff--all sorts of factors which don't affect anima...

Sea urchin genome suprisingly similar to man and may hold key to cures

...ve no eyes and they eat kelp and algae. Still, the sea creature’s genome is remarkably similar to humans?... Group, which recently completed sequencing of the sea urchin genome and published its findings in the November issue of Science. The National Institutes o...

Reef warns of sea level rise

... River, points to the high point of the last major sea level rise. Investigators from the ARC Centre of...zone, which means that for it to survive and grow, sea levels would have had to be at least 3 to 4 metres higher than at present. "There is some evidence...

Life in the extreme

... fluid is released through slow diffusion from the sea floor. Mud volcanoes which are active areas of fluid seepage, are other extreme environments discovered in the 1990s. These harsh conditions give rise to some of the most extreme and scientifically challenging environments for life to exist on the pl...

Tiny Tampa Bay fish key to evolution of immune system

...tly in Nature Immunology. "At a basic level, this sea worm tells us about the evolution of the immune response; specifically, it tells us that primitive organisms have more sophisticated immune systems than we previously thought," said X-ray crystallographer David Ostrov, Ph.D., an assistant professor o...

Cracking the egg

...o other organisms previously studied, a frog and a sea squirt. Obviously early development is a very stable process and many of the crucial steps associated with it have remained the same along the vertebrate evolutionary pathway. But at the same time there's evidence of instability in other areas. Acc...

NASA satellite data helps assess the health of Florida's coral reef

...atellites gave accurate, up-to-date information on sea surface temperatures to identify areas vulnerable ...itions elsewhere. Climate conditions, especially sea surface temperatures, are considered a major factor in coral reef health. Bleaching events typically...

Seagrass ecosystems at a 'global crisis'

... that have adapted to exist fully submersed in the sea ?profoundly influence the physical, chemical and biological environments of coastal waters. They provide critical habitat for aquatic life, alter water flow and can help mitigate the impact of nutrient and sediment pollution. ...

Bacteria in small sea life yield new way to make potential cancer drugs

...hers examined symbiotic bacteria that live only in sea squirts and other marine life. These bacteria are ...h of chemicals, which accumulate in the tissues of sea squirts and may help to defend them against predators. Many of these chemicals have anticancer prope...

Salmon farms kill wild fish, study shows

New research confirms that sea lice from fish farms kill wild salmon. Up to 95 pe...on that migrate past fish farms die as a result of sea lice infestation from the farms. The results of the research have been published in the Proceedings ...

Dig deeper to find Martian life

...ysium, the location of the newly discovered frozen sea on Mars. The lead author, Lewis Dartnell, UCL ...e we have of finding life is looking in either the sea at Elysium or fresh craters." The team found that the best places to look for living cells on M...

Nonvenomous Asian snakes 'borrow' defensive poison from toxic toads

...for use in defense, including milkweed insects and sea slugs. But vertebrate examples of toxin sequestration, especially from vertebrate prey, are rare. "A snake that's dependent on a diet of toads for chemical defense is highly unusual," said Hutchinson. Hutchinson said the research had identified si...

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