Sentences with phrase «changes in ocean chemistry»

To investigate changes in ocean chemistry that could result from higher temperatures and carbon - dioxide concentrations, the researchers used an Earth - system model called the Integrated Science Assessment Model.

Geologically «an - cient» species, which have survived large changes in ocean chemistry, are likely more resilient to predicted acidification....

Read / Purchase the Report Ocean Acidification: A National Strategy to Meet the Challenges of A Changing Ocean (2010) Excess carbon dioxide in the atmosphere — in addition to contributing to climate change — is absorbed by the ocean, making sea water more acidic and leading to a suite of changes in ocean chemistry.

In their statement, the scientific academies say the oceans have absorbed about a quarter of the carbon dioxide emitted to the atmosphere by human activities since the industrial revolution, resulting in rapid and irreversible changes in ocean chemistry.

But they are very sensitive to changes in ocean chemistry resulting from human activity.

These feedback processes are related to things such as clouds, water vapor, ice, changes in ocean chemistry, and changes in vegetation.

The fast uptake to oceans is likely to slow down gradually due to changes in ocean chemistry, but the slower processes will gradually have more and more importance.

24: Oceans).135 Acidifying changes in ocean chemistry have potentially widespread impacts on the marine food web, including commercially important species.

Current and projected increases in Alaska's ocean temperatures and changes in ocean chemistry are expected to alter the distribution and productivity of Alaska's marine fisheries, which lead the U.S. in commercial value.

And the changes in ocean chemistry are the sort of thing that can be expected to have a direct effect on the geological record if carbon levels rise far enough.

Changes in ocean chemistry, which can be described through the Revelle buffer factor [1], limit oceanic removal of CO2 [2], while the potential for terrestrial vegetation to take up CO2 is also predicted by some models to fall as the climate warms [3], although the size of this feedback is uncertain [4].

Excess carbon dioxide in the atmosphere — in addition to contributing to climate change — is absorbed by the ocean, making sea water more acidic and leading to a suite of changes in ocean chemistry.

IANS: Climate change is causing toxic metals trapped in the sediment beds of the Hooghly estuary in the Indian Sunderbans to leach out into the water system due to changes in ocean chemistry, say scientists, warning of potential human health hazards.

Although the technologies are still nascent, the idea that humans might help remove carbon from the skies as well as put it there is a reasonable Anthropocene expectation; it wouldn't stop climate change any time soon, but it might shorten its lease, and reduce the changes in ocean chemistry that excess carbon brings about.

Scientists from the Arctic Monitoring and Assessment Programme (AMAP) monitored widespread changes in ocean chemistry in the region.

Even with almost no chance of the high end of climate sensitivity estimates being right, the odds of substantial, prolonged and disruptive climate change (and changes in ocean chemistry) are still plenty high enough to justify a sustained push toward an energy menu that works for the long haul.

The Network strengthens members» ability to effectively manage coral reefs threatened by warming seas, bleaching, coastal development, pollution, overfishing, and changes in ocean chemistry.

Areas that are naturally more resilient to stressors, such as climate change impacts or changes in ocean chemistry

For example, on Heron Island Reef in the GBR, variations in pH and aragonite saturation state over one day were greater than the predicted changes in ocean chemistry globally by 2050.

Seagrasses also undergo a high rate of photosynthesis that may serve to buffer changes in ocean chemistry that affect shell - building organisms.

But they are very sensitive to changes in ocean chemistry resulting from greenhouse gas emissions, as well as to coastal pollution, warming waters, overdevelopment, and overfishing.

Instead, the team points out that similar swings in different isotopes» levels, occurring in both parts of the world, suggest that the two regions were experiencing the same changes in ocean chemistry at the same time.

This change in ocean chemistry followed a large - scale ice age known as the Gaskiers glaciation.

Beyond the sea level rise itself, the ancient geologic and geographic changes probably led to a buildup of oxygen in the atmosphere and a change in ocean chemistry, allowing more complex life - forms to evolve, he said.

«The other carbon dioxide problem», «the evil twin of global warming», or part of a «deadly trio», together with increasing temperatures and loss of oxygen: Many names have been coined to describe the problem of ocean acidification — a change in the ocean chemistry that occurs when carbon dioxide (CO2) from the atmosphere dissolves in seawater.

This change in ocean chemistry can strip away the building blocks of coral reefs, weakening an important link in the oceanic food chain.

Not exact matches

Now, a 15 - year, 30 - nation research collective called Geotraces is embarking on an ambitious global survey of ocean chemistry to quantify trace elements and shed light on how chemical concentrations fluctuate in response to changing environmental conditions.

This means that the sudden appearance of rangeomorphs at large size could have been a direct result of major changes in climate and ocean chemistry.

Cycles that drive changes in the ocean's chemistry and organisms take place over hours, days, seasons, years and even decades — timescales NEPTUNE can track.

«When tiny bacteria in the ocean began producing oxygen, it was a major turning point and changed the chemistry of the Earth,» explained Katsev.

At a global level, the excess of atmospheric CO2 is absorbed by ocean waters and it causes changes in water chemistry (pH decrease or ocean acidification).

Scientists conducting fieldwork in the region are reporting massive chick die - offs and nests with abandoned eggs, reports National Geographic's Winged Warnings series, which lays out the many threats facing the island's seabirds: warming oceans, earlier thaws, changing ocean chemistry and food webs, and increasing levels of ocean pollutants from PCBs to mercury.

«Changes to the chemistry of the Arctic Ocean could lead to changes in currents and weather patterns worldwide,» hChanges to the chemistry of the Arctic Ocean could lead to changes in currents and weather patterns worldwide,» hchanges in currents and weather patterns worldwide,» he said.

As atmospheric CO2 levels rise, those in the oceans do too, changing the chemistry of the seawater.

By studying the chemistry of growth rings in the shells of the quahog clam, an international team led by experts from Cardiff University and Bangor University have pieced together the history of the North Atlantic Ocean over the past 1000 years and discovered how its role in driving the atmospheric climate has drastically changed.

The chemistry in the growth rings in the shells of the clam — which occur much like the annual growth rings in the centre of trees — can act as a proxy for the chemical make - up of the oceans, enabling researchers to reconstruct a history of how the oceans have changed over the past 1000 years with unprecedented dating precision.

A McGill - led international research team has now completed the first global study of changes that occurred in a crucial component of ocean chemistry, the nitrogen cycle, at the end of the last ice age.

Enter the toy octopus: A team of researchers in California is exploring how the changing ocean chemistry affects a hermit crab's fight - or - flight response by simulating octopus attacks in the laboratory.

«It's a small correction,» he says, but «the ocean responds to very subtle changes in density» triggered by its heat content and chemistry.

The team analyzed little studied factors that play a role in ocean acidification (OA)-- changes in water chemistry that threaten the ability of shellfish such as oysters, clams and scallops to create and maintain their shells, among other impacts.

The finding suggests that sea life is already being affected by changes in the ocean's chemistry caused by rising carbon dioxide levels.

How are humans driving changes in the chemistry of the ocean, and what might this mean for marine ecosystems in the future?

Such priorities include: 1) establishing an ocean carbon chemistry baseline; 2) establishing ecological baselines; 3) determining species / habitat / community sensitivity to ocean acidification; 4) projecting changes in seawater carbonate chemistry; and 5) identifying potentially synergistic effects of multiple stressors.

Natural factors contributing to past climate change are well documented and include changes in atmospheric chemistry, ocean circulation patterns, solar radiation intensity, snow and ice cover, Earth's orbital cycle around the sun, continental position, and volcanic eruptions.

ref Such changes in the carbon chemistry of the open ocean probably have not occurred for more than 20 million years.

ref It will also be important to encourage socioeconomic research on the impacts of ocean acidification, the projected timing of impacts, and the ways to increase adaptability and resilience of socioeconomic systems in the face of changing ocean chemistry.

Oceanic uptake of anthropogenic carbon dioxide (CO2) causes pronounced shifts in marine carbonate chemistry and a decrease in seawater pH. Increasing evidence indicates that these changes — summarized by the term ocean acidification (OA)-- can significantly affect marine food webs and biogeochemical cycles.

You probably won't notice changes to the water's chemistry with a trip to the beach and a dip in the ocean — even wearing your snorkel mask.

Anthropogenic CO2 emissions are leading to a gradual decrease in ocean pH and changes in seawater carbonate chemistry, a process known as ocean acidification (OA).

The South China Sea (SCS) is said to be ocean - dominated at depth, and its CaCO3 records should reflect and preserve the effects of changes in the carbonate chemistry of the (western) Pacific Oocean - dominated at depth, and its CaCO3 records should reflect and preserve the effects of changes in the carbonate chemistry of the (western) Pacific OceanOcean.