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Tag: "plankton" at biology news

Currents could disrupt ocean food chain

...When the Atlantic Conveyer current works, the dead plankton sink to the bottom and are replaced at the surface...hough the system is a global one. Still, he added, plankton production would also decrease in the Pacific if the current was reduced. ...

Searching the depths of the straits of Florida for disease cures

...n channel that funnels water as well as larvae and plankton from throughout the Caribbean, in all likelihood making for a unique habitat that will yield numerous interesting and potentially lifesaving samples during submersible dives as deep as 3,000 feet. The team will also conduct daily scuba dives in searc...

Researchers use 3-D imaging system to unveil swimming behavior of microscopic plankton

...nts. Swimming against vertical currents allows the plankton to keep their depth, a behavior which was postulated long ago but had never been measured in the ocean until now. The results were captured during three experiments lasting several weeks at two sites in the Red Sea's Gulf of Aqaba, near the coral re...

Plankton can run, but can't hide from basking sharks

...world's second largest fish and feeds by filtering plankton from sea water through its enormous mouth. It is able to filter up to 2,000 tons of water per hour - the equivalent of an Olympic-sized swimming pool. It is harmless to humans, but has been netted and harpooned for its oil which was burned in lamps a...

Hidden sponges determine coral reef's nutrient cycle

...tes, i.e. they would have removed all of the small plankton from it. This is of course not the case, as there ...capacity to convert enormous quantities of organic plankton into inorganic material. The results from Scheffers' research have been made available to the pers...

Tropical Atlantic cooling and African deforestation correlate to drought, report scientists

...10,000 years. The cores contain foraminifera, tiny plankton shells that are composed of calcium and trace elements. By studying the ratios of magnesium and calcium in the shells, the scientists are able to correlate that information to past temperature changes in the ocean. In analyzing these records for the ...

Sequencing our seas

...ll-studied region of the open ocean with regard to plankton ecology, biogeochemistry and physical oceanography, making it an ideal collection site for this work," said Philip Taylor, director of NSF's biological oceanography program, which co-supported the work. "The HOT program provided the opportunity to p...

Wyoming cloud seeding experiment begins this month

...ll-studied region of the open ocean with regard to plankton ecology, biogeochemistry and physical oceanography, making it an ideal collection site for this work," said Philip Taylor, director of NSF's biological oceanography program, which co-supported the work. "The HOT program provided the opportunity to p...

Vaccine provides 100 percent protection against avian flu virus in animal study

...ll-studied region of the open ocean with regard to plankton ecology, biogeochemistry and physical oceanography, making it an ideal collection site for this work," said Philip Taylor, director of NSF's biological oceanography program, which co-supported the work. "The HOT program provided the opportunity to p...

Tiny polyps gorge themselves to survive coral bleaching

...ed fats within its body, or eat organic matter and plankton in the surrounding water," she said. But what ha...er. Water from the reef was filtered to remove any plankton and flowed through the tanks in the same way it did through their natural environment. In one set of...

Scientists discover interplay between genes and viruses in tiny ocean plankton

...obes like Prochlorococcus, the sea's most abundant plankton species. The ocean viruses, which carry their own genes as well as transport others, provide a way of transferring genes from old cells into new ones. "We're beginning to get a picture of gene diversity and gene flow in Prochlorococcus," Chisholm sa...

Red Tide causes sea turtle die-off in El Salvador

... which is produced by the species of algae and sea plankton that cause the phenomenon known as "Red Tide." "The rapid response and subsequent diagnosis in this outbreak demonstrates the power of collaboration among governments and non-governmental organizations," said White, who collected tissue samples in ...

Taking evolution's temperature: Researchers pinpoint the energy it takes to make a species

...f evolutionary change in the form and structure of plankton in the tropics and that it increases exponentially...s compared arrivals of new species of this type of plankton with differences in ocean temperatures at different latitudes ranging from the tropics to the arctic...

Ocean acidification threatens cold-water coral ecosystems

...s and other marine organisms (e.g. some species of plankton and mollusks) use carbonate ions to build their sk...uction in the growth of both the corals and marine plankton species that make their shells from aragonite. As the oceans become more acidic, corals are expected...

Iron critical to ocean productivity, carbon uptake

...uddenly have a more abundant food supply. "So the plankton can disappear as fast as you've made them grow." ...

A new look at the state of the oceans

... the data base PLANKTON*NET. Free access to the plankton data base PLANKTON*NET is an online data base illustrating plankton organisms both visually and contextually. Originally, the data base was established at the Alfred We...

Large dinosaurs were extremely hot in their day, UF study finds

...ut within a group, from a mouse to an elephant, or plankton to a large fish, we have found growth rate can be explained by how warm the animal is and how big the animal is," Gillooly said. "If we know the growth rate and size, we can determine temperature. If we know size and temperature, we can make predicti...

Pollen proves beneficial for northern lakes

...orthern lakes. Graham's research team found that plankton responded strongly to additions of pollen in experimental enclosures, located along the shorelines of three boreal lakes in northwestern Ontario's Experimental Lakes Area. "Specifically, pollen subsidized the lake water nutrient levels and in turn, p...

Report warns about carbon dioxide threats to marine life

...food. Many calcifying organisms--including marine plankton such as pteropods, a planktonic marine snail--are affected by the chemistry changes. Shelled pteropods are an important food source for salmon, mackerel, herring, and cod. If calcifying organisms such as pteropods are unable to sustain their populati...

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

...cterial "switch gene" in two groups of microscopic plankton common in the oceans. The gene helps determine whether certain marine plankton convert a sulfur compound to one that rises into the atmosphere, where it can affect the earth's tem...

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