Sentences with phrase «of marine food chains»

Never underestimating its child audience, this ambitious, visually brilliant picture book shows how the sun supports life by sustaining the ocean's microscopic phytoplankton, an essential part of marine food chains and a major supplier of the earth's oxygen.

«Although tiny, these organisms are a vital part of the Earth's life support system, providing half of the oxygen generated each year on Earth by photosynthesis and lying at the base of marine food chains on which all other life in the ocean depends.»

Half of phytoplankton species — the foundation of marine food chains — could be replaced by new species by 2100

These organisms are at the bottom of the marine food chain, and are eaten by other creatures.

Phosphorus is a key nutrient that could, if it reaches the open ocean, enrich waters of the Arctic Ocean, potentially stimulating growth of the marine food chain, the study's authors said.

In the water above natural oil seeps in the Gulf of Mexico, where oil and gas bubbles rise almost a mile to break at the surface, scientists have discovered something unusual: phytoplankton, tiny microbes at the base of the marine food chain, are thriving.

While algae and other microscopic plants, which form the base of the marine food chain, are vital to a healthy ecosystem, too much can cause murky water, reduce sunlight and oxygen levels, and ultimately cause harm to marine life.

To further investigate, researchers at the University of New Hampshire looked at seaweed populations over the last 30 years in the Southwestern Gulf of Maine and found the once predominant and towering kelp seaweed beds are declining and more invasive, shrub - like species have taken their place, altering the look of the ocean floor and the base of the marine food chain.

Researcher Ajit Subramaniam, an oceanographer at Columbia University's Lamont - Doherty Earth Observatory, used the data set to focus on natural oil seeps and discovered something unusual — phytoplankton, the base of the marine food chain — were thriving in the area of these natural oil seeps.

In many parts of the ocean the productivity of phytoplankton — microscopic plants at the base of the marine food chain — is limited by the availability of dissolved iron.

Because algae are the base of the marine food chain, the acid gets transferred to other animals, including shellfish.

Now a team of researchers from MIT, the University of Alabama, and elsewhere has found that such increased ocean acidification will dramatically affect global populations of phytoplankton — microorganisms on the ocean surface that make up the base of the marine food chain.

The new research published in the journal Science Advances examined the skin cells of common dolphins for chemical clues about the length of the marine food chain, which begins with tiny plankton and continues as species eat them, and other species eat those species.

Five thematic areas have been identified which cover the range of processes from the base of the marine food chain to the community and ecosystem level, and of mechanisms from the sub-cellular to the whole organism level.

«I discuss the technology of buoyant nutrient flakes to regenerate the phytoplankton at the base of the marine food chain.

It's been enough to raise the levels of the ocean — and the extra carbon in the atmosphere has also changed the chemistry of that seawater, making it more acidic and beginning to threaten the base of the marine food chain.

Large - scale impacts on pteropods and other calcifying organisms that form the base of the marine food chain could distress populations of larger fish that feed on them, leading to significant economic impacts on the multi-billion dollar U.S. seafood industry.

Ocean primary production of the phytoplankton at the base of the marine food chain is expected to change but the global patterns of these changes are difficult to project.

Among the effects could be more frequent, extreme weather events and droughts, rapid sea level rise from icecap melting, breakdown of the marine food chain and worst of all, feedback effects like large releases of methane from thawing permafrost, or large scale dieback of forests.

Increased carbon dioxide has already lowered the pH of the surface ocean; this is expected to have a negative effect on survival of plankton, the base of the marine food chain, and the growth and health of corals, which form biodiverse reefs in shallow waters of the Hawaiian Islands and Florida, and deep reefs in Alaska and the Southeast U.S. Invasive species are increasingly being recognized.

In addition to the acoustic monitoring equipment, the gliders are also outfitted with environmental sensors that collect data about things like temperature and salinity, and the estimated algae population levels, which are at the base of the marine food chain.

Assemblymember Alan Maisel, D - Brooklyn, said: «Sharks occupy the top of the marine food chain and are a critical part of the ocean ecosystem.

Not exact matches

Huge dams are affecting water cycle and bio-regions, pursseine trawlers are affecting marine food chains, both are destroying livelihood of people based on community control of resources.

The bears had previously gobbled up to 75 percent of the salmon population each year; researchers believe the change will have broad consequences, including increased salmon numbers disrupting the marine food chain.

The very well - being of the northern food chain is coming under threat from global warming, land development, and industrial pollutants in the marine environment.

The poles are on the front lines of climate change — melting ice, thawing permafrost, warming temperatures — but they are also at the forefront of weather patterns, global oceanic circulation and the marine food chain.

Researchers find trouble among phytoplankton, the base of the food chain, which has implications for the marine food web and the world's carbon cycle

He runs through a laundry list of factors that could amplify virus - driven disease mortality: fisheries shifting food chains, global warming, marine pollutant — triggered toxic algae blooms, marine pollution in the form of chemical contaminants, and endocrine disruptors altering the host — pathogen balance.

Commercial fishing and tourism both took hits; pre-spill levels of herring, a fish important for marine food chains and human consumption have yet to bounce back.

Now the chemistry of the entire ocean was shifting, imperiling coral reefs, marine creatures at the bottom of the food chain, and ultimately the planet's fisheries.

However, central surface waters of the oceans may not be the final destination of plastic debris since, as indicated by the study performed by the Malaspina Expedition, large amounts of microplastics could be passing to the marine food chain and the ocean floor.

«Marine ecosystems everywhere to the north will be increasingly starved for nutrients, leading to less primary production (photosynthesis) by phytoplankton, which form the base of ocean food chains.»

Cózar adds: «These microplastics have an influence on the behavior and the food chain of marine organisms.

Sharks are at the top of the ocean food chain, Meyer noted, making them an important part of the marine ecosystem, and knowing more about these fish helps scientists better understand the flow of energy through the ocean.

After studying population changes in 154 species of fish worldwide over 60 years, Pinsky was surprised to see marine equivalents of rabbits and mice collapsing to low levels — still shy of extinction but serious enough to disrupt ocean food chains or fishing - based societies.

These pollutants bioaccumulate in the tissues of marine organisms, biomagnify up the food chain, and find their way into the foods we eat.»

«The great marine reptiles were at the top of a long food chain that collapsed 65 million years ago.

«While the changing seascape has dramatically altered and increased the diversity and number of small creatures at the base of the marine food web, we still don't know how these changes in the ecosystem will propagate through the entire chain.

They feed on the bottom of the food chain — on single - celled plankton, which larger fish can not eat — and then they become prey for all sorts of upper - level predators like tuna, sea bass and halibut as well as seabirds and marine mammals.

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.

Phytoplankton play key roles in several chemical and nutrient cycles, including taking up carbon dioxide from the atmosphere and either cycling it through food chains or sequestering it in the deep sea, says marine ecologist David Hutchins of the University of Southern California in Los Angeles, who wasn't involved in the current study.

Morris has widened his research to include marine food chains and is also studying the effects of a range of organic flame retardants on the same terrestrial food chain.

These have provided insight into the roles that marine bacteria, archaea, viruses and eukaryotic microbes have as global primary producers that provide nutrition at the base of the food chain; remineralization (the transformation of organic molecules into inorganic forms); and the deposition of carbon on the sea floor.

Scientists have revealed a key cog in the biochemical machinery that allows marine algae at the base of the oceanic food chain to thrive.

The massive amounts of plastic trash in marine environments may be leading to toxic metals entering the food chain.

In a new study published in the Journal of Geophysical Research: Oceans in July, researchers found that phytoplankton, marine microorganisms that serve as the foundation of the food chain in the ocean, were more likely to thrive with the melting of the continent's ice shelves and ice sheets.

Being at the bottom of the food chain, krill simply do not have enough time to accumulate dangerous levels of toxins like other marine sources.

Being at the bottom of the food chain, these shrimp - like creatures do not have enough time to accumulate pollutants like other marine sources.

Really important - Marine PhytoPlankton — I don't see any videos discussing this algae and foundation of the food chain.

They're low on the food chain, meaning they're a more sustainable source of calories and have had less time and inclination to accumulate marine toxins and heavy metals.