Sentences with phrase «marine food chains»

Many other challenges such as the distortion of ecosystem services, the loss of biodiversity, the degradation of land, sprawling urbanization, worsening water scarcity, the disturbances in terrestrial and marine food chains or the ubiquitous pollution of all environmental systems have to be taken into consideration.

A related problem is the likely great increase of poisonings from microplastic / toxin interactions in marine food chains.

In: Marine Food Chains, J. H. Steele, Ed.

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.

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.

«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

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.

Furthermore, the team were able to calculate that the food supply in the ocean was fully restored around 1.7 m years after the asteroid strike, which is almost half the original estimates, showing that marine food chains bounced back quicker than originally thought.

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.

«We can't begin to fathom what the long - term effects on the marine food chain will be.

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.

When diatoms bloom, they can impede copepod reproduction and may even disrupt the marine food chain, the study suggests.

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.

«Global fisheries to be, on average, 20 percent less productive in 2300, UCI study finds: Warming - induced plankton growth near Antarctica will impair marine food chain.»

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 result is a dramatic rise in sea - surface temperature and a drastic decline in plankton growth, which is devastating to the marine food chain, including commercial fisheries in the region.

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.

The krill, for instance, a very important link in marine food chain, feed on phytoplankton and in turn gets eaten by other organisms in the sea such as fish.

Forage fish are small, low trophic level fish that play a central role in the marine food chain.

«Identifying the threads that connect these parasites from wild and domestic land animals to marine mammals helps us to see ways that those threads might be cut... by, for example, managing feral cat and opossum populations, reducing run - off from urban areas near the coast, monitoring water quality and controlling erosion to prevent parasites from entering the marine food chain.»

Tuna are a top predator in the marine food chain, maintaining a balance in the ocean environment.

If that finding stood the test of time, it would indeed be momentous; the vast clouds of tiny photosynthesizing organisms in the seas are an important part of the carbon cycle and underpin the marine food chain.

Phytoplankton in the deep oceans is in decline according to NASA, although just now this is being «off - set» by algae blooms near the coast, probably linked to agriculture - run - offs — both developments being disastrous for the marine food chain.

Species were hunted almost to the point of extinction, making fish far more expensive, and the oceans became a dumping ground for industrial and urban waste, spreading contamination throughout the marine food chain and making it unsafe to eat fish in great quantities.

The pollution produced by carbon dioxide increases the acidity of the oceans and affects 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.

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Plankton anchor the marine food chain.

Bridlington, Whitby, and other English coastal towns have long depended on the North Sea fishery for food and income.2 But global warming is affecting plankton and changing the marine food chain, compounding the pressures of overfishing.3 The resulting disruption of the ecosystem could damage the fishing industry and hurt North Sea coastal communities from the United Kingdom to Scandinavia.

In the North Sea, global warming is affecting plankton and the marine food chain, compounding the pressures of overfishing.3 Future warming is also expected to exert a significant impact on the marine ecosystem, creating further uncertainty for the fishing industry.7, 8,15

Major changes in plankton could therefore disrupt not only the marine food chain, but also the fishing industry and communities that have invested in infrastructure tied to commercial species in the North Sea, such as cod.9

Also recognizes the need for more knowledge and research on the source and fate of microplastics and their impact on biodiversity, marine ecosystems and human health, noting recent knowledge that such particles can be ingested by biota and could be transferred to higher levels in the marine food chain, causing adverse effects; 6.

Scientists think that increased acidity could affect the entire marine food chain, from microscopic forms of phytoplankton to fish and whales.

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.

It is argued by the whalers that growing whale populations will lead to an imbalance in the marine ecosystem, and that by distorting the marine food chain, recovering populations of whales will threaten global food security.

As carbon dioxide is acidic, the surface waters of the oceans could become more acidic than ever before in five million years, reducing the capacity of shell - forming species to form shells and affecting the marine food chain.

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.

This ocean acidification makes water more corrosive, reducing the capacity of marine organisms with shells or skeletons made of calcium carbonate (such as corals, krill, oysters, clams, and crabs) to survive, grow, and reproduce, which in turn will affect the marine food chain.7