Sentences with phrase «when plankton»

There's a lot of attention being given to what happens when the plankton production («primary production» — the first step where photosynthesis occurs).

By dating the shells and measuring their ratio of boron isotopes, they were able to estimate how much CO2 was in the air when the plankton were alive.

When plankton and algae eventually die, they simply sink to the ocean floor and become buried.

That works back to when plankton expanded from shallow coastal to deep - ocean habitats, taking the food chain with it.

Manta rays feed most actively at night when plankton rises toward the water's surface.

Occasionally, manta rays can also be spotted, especially when plankton is present.

When the plankton dies and sinks to the seafloor, it should bury the carbon, but early results have not been impressive.

When plankton on the high seas catch a cold, the whole ocean may sneeze.

So ammonites might well have starved to death when plankton populations crashed 65 million years ago.

Not exact matches

Juveniles lose the bright, plankton - filtering gills seen on this individual when they mature and descend into some of the deepest depths of any known fish, often more than 5,000 meters (16,000 feet) beneath the ocean surface.

In fact, when this particular brood had hatched about a week earlier, they were all omnivores, feeding on plankton and the suspended organic matter referred to in higher - class journals as «detritus.»

When the weather warms and no ice sits upon the seas, the sediment on the ocean floor is mainly organic: remains of plankton and diatoms.

Large plankton eaters did not appear again until about 60 million years ago, when suspension - feeding sharks emerged.

When areas of the ocean are low in iron, the plankton population usually remains sparse.

In experimental buffets with fed or hungry polyps, the nudibranchs ate faster when polyps were fat with just - caught plankton.

A team of scientists happened to be in the area on a research cruise when they detected the beginning of the plankton bloom.

An international team of scientists have discovered two new plankton - eating fossil fish species of the genus called Rhinconichthys (Rink - O - nik - thees) from the oceans of the Cretaceous Period, about 92 million years ago, when dinosaurs roamed the planet.

When the creatures that eat the plankton die, their shells and organic remains fall to the ocean floor, sequestering carbon in the deep water and sediments.

When he diagrams how the fish transfers the plankton from the water to its gill - rakers and then to its gullet, Chapman says, «It's such a cool thing they've got, to channel their food.»

When these species invade, they reduce the amount of plankton available to feed native fish.

But when a giant shelf collapses — as Larsen A and B did in 1995 and 2002 — solar - powered plankton production ramps up, and scientists think it could jump - start a complex food web of diverse marine life.

The shale, named for the town of Eagle Ford, TX, is a geologic remnant of the ancient ocean that covered present day Texas millions of years ago, when the remains of sea life (especially ancient plankton) died and deposited onto the seafloor, were buried by several hundred feet of sediment, eventually turning into the rich source of hydrocarbons we have today.The shale was first tapped in 2008 and now has around 20 active fields good producing over 900 million cubic feet per day of natural gas.

Looking at strains of the plankton under varying CO2 levels, researchers found that while some plankton had difficulties forming their shells when the water was more acidic, others did not, causing researchers to speculate that the plankton might be able to use another form of calcium to substitute in shell making.

They found both models showed a general feeding structure throughout the plankton food web: The smallest organisms were too small to ingest prey, while the largest plankton were poor competitors when living by photosynthesis.

But he says there is also a biological component: «When you mix like that, you bring more nutrients» to organisms living in the area, he says, such as plankton and corals.

The ecosystem may be nourished at least in part by microbes that feed on organic goo in the subglacial mud — the remains of ancient plankton that died and sank to the bottom millions of years ago, when the world was warmer and this place was a sunlit sea.

«When it was time for Emiliania to start bloom formation, there were so few cells left in the plankton community that it couldn't outgrow its competitors anymore,» reflects Ulf Riebesell.

One type of marine fungus, for example, first appeared in the sediments roughly 9600 years ago — exactly when some forms of freshwater plankton and a freshwater mussel vanish, the team reports this week in the Proceedings of the National Academy of Sciences.

When fish feed on organisms that live around bottom - growing plants and on the mud in the nearshore areas (benthic organisms in the littoral zone), they accumulate less mercury than when they are feeding on plankton in the open waWhen fish feed on organisms that live around bottom - growing plants and on the mud in the nearshore areas (benthic organisms in the littoral zone), they accumulate less mercury than when they are feeding on plankton in the open wawhen they are feeding on plankton in the open water.

Rohr studies bioluminescent plankton that give off a flash of light when disturbed.

Only when we know when and where certain nutrients are available for plankton growth we can also estimate how much carbon the plankton can bind by photosynthesis and thus remove from the atmosphere.»

He suspects that it uses suction when it finds large numbers of plankton that are worth the effort to obtain.

For example, when younger organic matter from plankton is heated using RPO, it generally reacts at lower temperatures than much older organic matter from eroded bedrock.

When the conditions are right, fluorescent plankton can light up around the boat as it sails.

Another result of the study is that animal plankton die when exposed to nanosized plastic particles, while larger plastic particles do not affect them.

«When you feed your fish flakes from Ocean Nutrition's line, you'll see pieces of whole plankton or brine shrimp right there in the flake,» said Jason Oneppo, research and development manager at Ocean Nutrition Americas.

When the three currents mingle and rise to sunlit depths, it creates ideal conditions for massive plankton blooms, which are essential for seabirds and larger forms of marine life.

When the South Equatorial Current arrives from the west, it is joined by the colder, plankton - rich Humboldt Current.

But after all, who needs wifi connection when you can swim with glowing planktons at night?

A bioluminescent bay is an ideal habitat for the flourishing of small dinoflagellate plankton, most of which emit a bluish light as a defense mechanism when agitated.

The best time to see whale sharks is between February and May when there is a higher concentration of plankton.

Plankton blooms happen naturally when dust containing iron settles on ocean waters where a lack of iron otherwise prevents plankton from tPlankton blooms happen naturally when dust containing iron settles on ocean waters where a lack of iron otherwise prevents plankton from tplankton from thriving.

«When CO2 reacts with seawater, the reduction in seawater pH reduces the availability of carbonate ions, which play an important role in shell formation for a number of marine organisms such as corals, marine plankton, and shellfish.

Similar results were obtained in incubations of natural plankton assemblages from the north Pacific ocean when exposed to experimentally elevated CO2 levels.â $?

Next obvious question: If the above question is true (and I am not saying that it is) why in the world would we be investing billions in alternative and questionable energy sources and energy uses when we should be spending billions in fixing the root cause of the plankton problem (stress the phrase «root cause»).

When I give talks on the glacial - interglacial contributions of plankton to CO2 fluctuations, I'm frequently asked about planktos.

Mesocosm experiments found that when atmospheric CO2 was increased, primary production by plankton community consumed 39 % more DIC.

* Iron in some parts of the Ocean are at 2 - 4 parts per trillion when it should be at 10 - 15 parts per trillion for healthy amounts of plankton and algae.

When enough of these carbonate deposits build up, they form carbonate rocks, such as limestone, which are composed of the skeletons of trillions of dead plankton.

The zones form when nutrient - rich waters from the depths rise to the surface and enable a bloom in plankton growth.