Sentences with phrase «of organic carbon»

There are at least ~ 1500 billion tons of organic carbon in permafrost zone soils, almost twice as much as currently exists in the atmosphere.

They then used those measurements to calculate the amount of organic carbon stored in permafrost at each site and in areas with similar terrain.

The oceans and forests are a much greater source of organic carbon than anthropogenic emissions and they change naturally as evidenced by the annual cycle.

However, in pasture land, the quantity of organic carbon in the soil has slightly increased since the forest's disappearance.

· The study found evidence to link brown carbon — a form of organic carbon aerosols — to warming.

But most studies have not found an increase in the rate of organic carbon sinking into deeper waters.

The dimming was shown to be accompanied by significant atmospheric absorption of solar radiation by black and brown carbon (a form of organic carbon).

The study will also investigate the types of organic carbon present in the ground to help understand how it influences uranium behavior.

We found that cells produced more calcium carbonate under future ocean conditions, but had the same amount of organic carbon as in present conditions.

Later the proportion of organic carbon and nitrogen of the dry biomass and biomass weight were measured.

In addition, they are calling for instruments that would enable chemical analysis and the detection of organic carbon.

The accumulation of organic carbon in the deep ocean would limit the release of carbon into the atmosphere as CO2, limiting further warming by this greenhouse gas.

An OLED display is essentially made up of an organic carbon - based film hooked up to a pair of electrodes.

Arbuscular mycorrhizal fungi live in symbiosis with plant roots and are able to store up to 70 percent of organic carbon from leaf litter.

Regarding the Paleocene - Eocene event itself, the field seems to be coming around to the idea that it had something to do with a greatly accelerated oxidation of organic carbon stored on land, perhaps associated with the drying up of interior shallow seaways.

One example is the global soil reservoir of organic carbon (which is not a single «pool», but which is made up of many components, some which are very labile (rapid turnover via microbial and root respiration) and some of which are very long - lived (humic material).

«The evolutionary innovation and expansion of land biota could permanently increase [chemical] weathering intensity and [clay] formation, establishing a new level of organic carbon burial and oxygen accumulation.»

Frozen tundra soils are one of the largest pools of organic carbon on the planet.

Even in the absence of oxygen, the research team found that the respiration of organic carbon occurring in the anoxic waters of the Black Sea is not as different from that occurring in the deep ocean.

And the agency at work in this unexpected process could be biology: the researchers found evidence that tiny microbes in the mountain soils were consuming sources of organic carbon trapped in the rock, and releasing CO2 into the atmosphere.

Permafrost — subsurface soil that remains frozen year - round — covers nearly 19 million square kilometers of the circumpolar Arctic and is thought to contain around 1700 billion tons of organic carbon [Schuur and Abbott, 2011].

Matyas Ripszam has also examined the effects of higher temperature and different concentration of organic carbon content on the distribution of pollutants in modelled real - life marine ecosystems, so called mesocosms.

The opportunity to pour carbon back into the soil exists because farming over the past century has depleted its levels of organic carbon, Rice notes.

Lead author PhD student Adam Hejnowicz said: «Seagrass meadows could play a vital role in combating climate change as they are regarded as a net global sink for carbon.They have the capacity to bury significant deposits of organic carbon beneath the sediment, up to many metres thick in places and over millenary time scales.»

Using samples collected from the Liwu and Wulu river basins in Taiwan, which run off the central range, the team compared the radiocarbon profiles of organic carbon in the rock with the soil directly above it.

«Our original plan was to understand the fate of organic carbon released from viral lysis of picocyanobacteria» said Feng Chen.

«After examining rocks 450 million years old or older, we believe the drop was caused by a massive burial of organic carbon during the time period,» Quinton said.

In the spirit of an ongoing series of new discoveries which could be titled «whoops, things are a lot worse than we thought» Yahoo News / AFP is reporting that according to new research coming out to the University of Alaska Fairbanks, and published in Nature Geoscience, the stock of organic carbon stored in Arctic permafrost is 60 % higher than previous estimates.

Lignin is the substance that makes trees and cornstalks sturdy, and it accounts for nearly 30 percent of the organic carbon in the biosphere.

Researchers in the US have calculated that, thanks to climate change, melting glaciers will have spilled an extra 15 million tonnes of organic carbon into the seas by 2050.

They found that erosion of permafrost releases a total of 36 million kilograms of organic carbon from the Yukon Coastal Plain into the Beaufort Sea annually.

The study included carbon dioxide emissions from burning fossil fuels and producing chemicals and cement but excluded emissions from activities like deforestation and logging, forest and peat fires, the decay of biomass after burning and decomposition of organic carbon in drained peat soils.

They key, scientists explain, lies in ensuring that a sufficiently high enough percentage of organic carbon produced during the blooms reaches middle - depth waters, at which point it would remain in deeper underwater currents for decades.

However, the toys themselves provide a source of nutrients: the plastic materials — often low - quality polymers — release substantial amounts of organic carbon compounds.

As plants in and around the lake grow larger and / or proliferate, the amount of organic carbon available when they die and the rate at which they break down in soil increases.

But little research has been done on the transformation of organic carbon in Arctic waters into carbon dioxide.

Given the right conditions, this genetic acquisition set the stage for the microbe to undergo a dramatic growth spurt, rapidly consuming a vast reserve of organic carbon in the ocean sediments.

We have shown that hydrothermal vent fluids contain almost none of the organic carbon which accumulates in the oceans, which means that vents are a sink for this unreactive «stored» carbon.»

Dr Jeff Hawkes, the lead author of this study, from the NOC said: «There has been a long outstanding question about whether hydrothermal vents are a source or sink of organic carbon to the oceans.

Co-author Professor Eric Achterberg, from the University of Southampton, said: «The beauty of this approach is that with both field and laboratory experiments we were able to prove how the mechanisms operate for the removal of organic carbon in the deep ocean.»

«The presence of organic carbon at or near the Martian surface provides a potential nutrient source for putative life,» says co-author Francis McCubbin.

But because their roots and soil are regularly washed by tides, much of this organic carbon leaches into the ocean.

«Insights into oceanic carbon transformations — including the oxygen dependence of organic carbon respiration — can be gained by studying the anoxic Black Sea,» said Margolin.