Sentences with phrase «plankton at»

«It could stimulate growth of plankton at the base of the food web, which could impact birds, fish and marine mammals higher up the food chain,» said Dr Hawkings.

Because global warming affects plankton at the base of the saltwater food chain, it also affects fish that eat plankton, disrupting the overall ecosystem.

«These fish have an important role in the food chain because they connect plankton at the base of the food chain with higher levels.

This pollution is impacting our marine ecosystems, wildlife such as seabirds, dolphins, fish, and turtles, and plastic fragments are even displacing plankton at the base of the food chain.

Manta rays are impressive, but harmless, sea creatures that feed on plankton at night.

The same mechanism would likely also mobilize and deliver more nutrients, carbon, and other chemicals into the Arctic Ocean, fueling the growth of plankton at the bottom of the food chain.

He doesn't need to find sediment laid down by plankton at the bottom of some warm little pond.

Yet Levitan, who studies plankton at Rutgers University in New Brunswick, N.J., cautions against extrapolating too far.

Phosphorus is an essential nutrient that feeds plankton at the base of the ocean food web.

With more plastic than plankton at the center of the seas, marine life is consuming this waste.

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

Not exact matches

By oyster's standards, he had a good life: the sea water was clean, and full of plankton, and the green warmth of the light at low tide made him grow and prosper.

At night, as the mysterious guests sliced through the gentle swells, phosphorescent plankton would gather around their fins, lighting a path for the ship through the water.

At this size it is small enough to be ingested by every single organism in the world's oceans — animals as small as krill and salps (plankton feeders) right up to the great Blue Whale.

Countless tiny plankton fossils stare back at him through the microscope.

«Under climate change, the Pacific Islands region is projected to become warmer, less oxygenated, more acidic, and have lower production of plankton that form the base of oceanic food webs,» said lead author Rebecca Asch, Nereus Program alumnus and Assistant Professor at East Carolina University.

But dictating the species composition of a plankton bloom and its aftermath remains beyond the ken of marine biology, causing one researcher involved in the successful 2004 effort, marine biologist Victor Smetacek of the Alfred Wegener Institute for Polar and Marine Research in Germany, to call it beyond control at this stage.

In this way, at least half of a nudibranch's diet is plankton.

Mussels have caused high mortality in native Unionid clams (though some clams seem able to coexist with zebra mussels), altered the makeup of populations living at the bottom of the waterways and reduced plankton communities.

Plankton are literally at the bottom of the food chain, a source of nourishment for virtually every animal in the sea.

While a professor at the University of Kiel, Hensen led a detailed survey of Atlantic plankton — which include algae, bacteria, protozoans, crustaceans, mollusks, and coelenterates — that drift with ocean currents.

At both poles, organisms in decline are being replaced by plankton called flagellates.

Without the ozone layer, ultraviolet rays from the sun would reach the surface at nearly full force, causing skin cancer and, more seriously, killing off the tiny photosynthetic plankton in the ocean that provide oxygen to the atmosphere and bolster the bottom of the food chain.

A flow meter measured seawater volume, which was pumped through external ports at predetermined times, and multiple 200um - mesh filters retained the plankton from separate samples.

Traditionally, pumps and nets are used for sampling plankton, which require sampling at predetermined stations or towing nets behind a ship, followed by visually sorting collected organisms into taxonomic groups.

A flow meter measured seawater volume, which was pumped through external ports at predetermined times, and multiple mesh filters retained the plankton from separate samples.

Plankton, crustaceans and fish, all food for wildlife, reproduce at the dynamic edge of the sea ice, where it floats over shallow near - shore waters.

Scientists took nearly 200,000 water, plankton, atmosphere particles and gases samples in 313 points of the Indian, Pacific and Atlantic Oceans at depths of up to 6,000 meters.

Masses of plankton add swirls of green to the blue waters of the Arabian Sea in this February 3 snapshot from NASA's Aqua satellite (Iran and Pakistan at top of the image; India, to the right).

«Plankton are much more than just food for the whales,» said Chris Bowler, a co-author on all five Science papers and research director at the French National Centre for Scientific Research (CNRS).

The scientists developed a mixotrophic model of the global ocean food web, at the scale of marine plankton, in which they gave each plankton class the ability to both photosynthesize and consume prey.

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.

The problem is that there are very few data to work into models, as it's extremely difficult to observe trophic strategies at the microscopic plankton scale.

But in the oceans, the more people have looked at plankton, the more mixotrophy seems to be common.»

Stout infantfish were captured in a plankton net on the Great Barrier Reef in Australia by a field researcher in 1979, then overlooked for more than two decades until H. J. Walker, a senior museum scientist at the Scripps Institution of Oceanography, and William Watson of the National Marine Fisheries Service, realized they were an unknown species.

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.

At any one time, an estimated 7 billion tonnes of ballast water is crossing the oceans — almost all of it carrying seeds, spores, eggs, larvae, bacteria and plankton native to wherever the water was loaded.

An international team led by Thijs Vandenbroucke (researcher at the French CNRS and invited professor at UGent) and Poul Emsbo (US Geological Survey) initiated a study to investigate a little known association between «teratological» or «malformed» fossil plankton assemblages coincident with the initial stages of these extinction events.

With warmer equatorial waters reducing plankton abundance and spurring many fish species, notably bigeye and skipjack tuna, to migrate toward the poles, the waters around Wake and Johnston, 1600 kilometers north of the equator, «are precisely where you want to have a protected area,» says Robert Richmond of the University of Hawaii at Mānoa.

«We think of plankton as the tiny alphabet soup of the ocean, floating around passively while larger organisms eat it,» says biologist Gregory Gavelis, who lead the study while a researcher at the University of British Columbia (UBC).

They're able to do so thanks to the larger surface area of their wings, which enables them to ride the prevailing winds, often at altitudes of more than 1000 km, while dining on aerial plankton and small insects.

To test this, Rick Relyea, a biologist at the University of Pittsburg in Pennsylvania, simulated a pond ecosystem by filling 1000 - liter tanks with well water, plankton, various tadpole species, and other organisms at the same densities found in nature.

Taken together, these organisms weigh approximately 10 billion tons and are a major link in the food chain between microscopic plankton and top predators like tuna, birds and marine mammals, according to Simone Baumann - Pickering, an assistant research biologist at the University of California, in San Diego.

The researchers ruled out dinoflagellates, copepods, and other plankton known for luminescence, but their samples were taken at a depth of about three yards.

Taketeru Tomita of the University of Tokyo, Japan, and colleagues have looked at the mechanics of its jaw to find out whether it actively sucks plankton in, or just swims through clouds of them with its mouth open and hopes for the best — a technique called ram feeding.

Dutkiewicz says shifting competition at the plankton level may have big ramifications further up in the food chain.

Ammonites, which were free - swimming molluscs of the ancient oceans and are common fossils, went extinct at the time of the end - Cretaceous asteroid impact, as did more than 90 per cent of species of calcium carbonate - shelled plankton (coccolithophores and foraminifera).

A study published in Genome Biology, led by Anders Andersson at KTH Royal Institute of Technology / SciLifeLab, shows that the closest relatives of bacterial plankton in the Baltic Sea are not found in oceans or freshwater lakes, but in other brackish environments.

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.

Vast numbers of bacteria and plankton occur both at the surface and in deep ocean waters.