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Tag: "corals" at biology news

Hydrogen and methane provide raw energy for life at 'Lost City'

...e Foundation. Other large organisms include crabs, corals and fish. Kelley will be co-principal investigator on another science expedition to Lost City this summer, without leaving the UW. She'll use state-of-the-art communication technology to help direct investigations at sea during a mission with co-PI ...

An (ecological) origin of species for tropical reef fish

...2000 km gap is believed to be a strong barrier for corals and associated reef organisms." "My idea was to test whether or not wrasses in the genus Halichoeres were genetically different North and South of this barrier. Since all of these species have similar abilities to disperse, I expected to find geneti...

Tsunami-damaged coral reefs should be left to recover naturally, say scientists

...low them to repair themselves. Only in areas where corals were more or less wiped out and no healthy reefs remained nearby to provide a source of new coral larvae, would artificial methods such as coral transplantation be clearly beneficial. Dr Alasdair Edwards, a researcher and senior lecturer with the Un...

Oceans turning to acid from rise in CO2

...nd adversely affect other organisms dependent upon corals and shellfish. The acidity could also negatively impact other calcifying organisms, such as phytoplankton and zooplankton, some of the most important players at the base of the planet's food chain. "We can predict the magnitude of the acidification ...

Marine conservation organizations team up to conduct Indonesia coral reefs assessment

... natural recovery process including the success of corals to reproduce and grow. "The health of the coral reef ecosystem along the Sumatra coastline is vital to the well-being of the people of Indonesia who depend upon the rich resources of the sea. This survey will help us understand the extent of the d...

Health of coral reefs detected from orbit

...an event that happens within a fortnight. Bleached corals may rapidly be colonised by blue-green to brown algae, more difficult to distinguish from live coral. Repetitive, objective and broad-scale satellite coverage is the alternative. At this week's MERIS/AATSR Workshop in Frascati, Italy, the CSIRO te...

Health of Acehnese reefs in the wake of the tsunami shows human impacts more harmful

...at direct tsunami damage was largely restricted to corals growing in unconsolidated substrata, a feature tha... which typically have a greater affect on delicate corals in shallow waters. The team also found that reef condition varied widely within the region and was ...

Tiny polyps gorge themselves to survive coral bleaching

...ult is a "bleached" white coral. "In most cases, corals get 100 percent of their daily metabolic energy ne... researchers is why in some bleaching events, some corals quickly died off while others close by were able to recover. To answer that, she returned to Hawaii ...

Too much sugar not good for coral reefs

...carbon compounds--too much sugar--that often kills corals indirectly by stimulating bacterial growth." "Sug... in runoff cause bacteria normally associated with corals to grow out of control. People don't usually even measure carbon when they do water quality studies...

Sea coral's trick helps scientists tag proteins

...kyanov, no one had looked for GFP-like proteins in corals because they do not glow in the dark like fireflies and jellyfish. The corals' native green and red fluorescent proteins give off light only when stimulated by higher intensity light. Lukyanov's findings resulted in the discovery of many new GFP-like...

How marine reserves are giving coral reefs a helping hand

...h to remove seaweed from the reef which allows new corals to settle and grow.This grazing process is essential to the health of the system." "Caribbean reefs are still trying to recover from the devastating effects of an El Nino bleaching event in 1998 which caused widespread damage to coral around the wor...

The diversity of marine life in the Gulf of Maine region is much greater than previously thought

...dge or the eastern North Atlantic. We associate corals with warm tropical waters rather than the cold Gulf of Maine. But the Gulf of Maine region hosts 14 known species of deepwater coral, some of which have only recently been found by Gulf of Maine scientists. Image on left: Gersemia rubiformis, Red S...

Anemone genes reveal versatile building blocks for body plans

...--a simple sea anemone. Sea anemones, along with corals and jellyfish, are members of the phylum Cnidaria, and they possess a radial body plan that is distinct from the familiar bilateral body plan exhibited by vertebrates and many other animals. Despite their superficial dissimilarities, Cnidarians and o...

Ocean acidification threatens cold-water coral ecosystems

...ep-sea calcifying animals like corals. Cold-water corals that make their skeletons from aragonite ?a form o...) ?are most vulnerable. Cold-water, reef-building corals are prevalent in the North Atlantic, where there is a deep layer of water supersaturated with aragon...

Drug discovery team to explore newly discovered deep-sea reefs

...n Miami and Bimini because pieces of reef-building corals had been brought up using surface-operated dredge ...ollecting samples of organisms such as sponges and corals that will be tested to determine if they, or microorganisms living within them, produce chemicals wi...

Deep-water discovery

...n Miami and Bimini because pieces of reef-building corals had been brought up using surface-operated, dredge...l collect samples of organisms such as sponges and corals that they will test to determine if they, or microorganisms living within them, produce chemicals wi...

Pollution threatens coral health by preventing lesions from healing, UCF study shows

...medical examiner," Fauth said. "It's possible that corals are being stressed by pollution, and we're trying to find out what stresses them and how it's affecting coral health." If the researchers can determine the specific causes of pollution that are harming coral, it then will be up to governments, orga...

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

... thrive in these situations, particularly when the corals are already stressed by a multitude of other impacts including global warming. According to the 2004 Status of the Coral Reefs of the World report, coral reefs are in serious decline due largely to human activities; an estimated 20% of the world's ...

Corals switch skeleton material as seawater changes

...eopards may not be able to change their spots, but corals can change their skeletons, building them out of d... growth in the same location. The team showed that corals can switch from using aragonite to another mineral, calcite, in making the calcium carbonate. They m...

Report warns about carbon dioxide threats to marine life

...s a result, reef structures are threatened because corals may be unable to build reefs as fast as erosion wears away the reefs. "This threat is hitting coral reefs at the same time that they are being hit by warming-induced mass bleaching events," Langdon says. Mass bleaching occurs when unusually warm tem...

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