Sentences with phrase «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.

The results showed that mature forest stands stored significantly more soil organic carbon in strongly mineral - bound and stable carbon pools than did soils from cut stands.

Also, there has not been a uniform definition of soil organic carbon sequestration among researchers.

The team found dissolved organic carbon in all of them, and they found that newly - exposed muddy water was liable to surrender 40 % more CO2 to the atmosphere.

Research on organic matter concentrates on measuring the soil organic carbon content parameter.

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

A forest fire produces black carbon as well as organic carbon molecules.

But they are an important store for organic carbon.

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

These results place general questions on widely acknowledged vertical particle flux models, which apparently do not fully explain the relationship between primary production and organic carbon burial in high productive areas.

Most soils have a limit, and increased organic carbon stock in soils depends on the type of soils and what the land is used for.

Higher temperature alone led to increased losses of pollutants, whereas higher organic carbon content retained more pollutants in the model ecosystems.

There are also questions around the rates of soil organic carbon sequestration that have been researched and published for the past 20 years.

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

As these more substantial microbes die, the researchers found they increase the flux of sinking organic carbon particles by as much as 35 percent.

Plants absorb carbon dioxide from the atmosphere and convert it to organic carbon during photosynthesis.

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

A technology - based global inventory of black and organic carbon emissions from combustion.

This is being made worse, he said, by organic carbon running off the land — a secondary effect of regional warming.

Burning diesel fuel produces mainly black carbon, for example, while burning wood produces mainly organic carbon.

As global temperatures rise, that permafrost is starting to melt, raising concerns about the impact on the climate as organic carbon becomes exposed.

Growth is controlled by dissolved organic carbon and, in surface waters, temperature.

In addition to water, the rover will look for organic carbon — from which life could be built — and molecules that could serve as an energy source.

Increasing soil organic carbon by improved management can help maintain productivity in drier conditions.

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

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

Black carbon, which is co-emitted with organic carbon and sulfates, tends to work as a nucleus for cloud condensation — these clouds form in the lower atmosphere, where they play a cooling role.

TA, total alkalinity; DIC, dissolved inorganic carbon; pCO2, carbon dioxide concentration; HCO3 −, bicarbonate concentration; CO32 −, carbonate concentration; POC, particulate organic carbon content per cell; PP, primary production per cell; PIC, particulate inorganic carbon content per cell; CR, calcification rate per cell; Chl a, chlorophyll a content per cell.

Changes in precipitation and runoff in New England may be driving more dissolved organic carbon into the Gulf of Maine.

The researchers estimate that the dissolved organic carbon released by melting glaciers will be an increase of half as much again on the current flow − the equivalent of about half the annual flow of dissolved carbon down the mighty Amazon River.

If spring and summer temperatures become warmer on average, the active layer will thicken, making more organic carbon available for microbial decomposition.

Here, we report surface water dissolved inorganic carbon (DIC) and sedimentary organic carbon concentrations and their isotopic compositions in the rapidly urbanized Jiaozhou Bay in northeast China as well as carbonate parameters in effluents of three large WWTPs around the bay.

«There's so much organic carbon trapped in permafrost,» she said, «and we don't really know what's going to happen as the climate warms.»

Instead these environments are relying on organic carbon from external sources, such as terrestrial organic matter from lake catchments.

Kim Reisenbichler, Bruce Robison, and Rob Sherlock, biologists from the Monterey Bay Aquarium Research Institute, collected more than 100 intact sinkers as they were still dropping and determined how much organic carbon each contained.

Soil microbes consume organic carbon compounds in soil, use some of it to make more microbes and release the rest to the atmosphere as carbon dioxide.

The higher CH4 emissions measured from runnel ponds, and their potential to contain organic carbon deposited thousands of years ago qualify them as a positive feedback system contributing to climate dynamics.

In their paper, published in Nature Communications, Atmospheric oxygen regulation at low Proterozoic levels by incomplete oxidative weathering of sedimentary organic carbon, the University of Exeter scientists explain how organic material — the dead bodies of simple lifeforms — accumulated in the earth's sedimentary rocks.

for article Chinese Grain for Green Program led to highly increased soil organic carbon levels: A meta - analysis.

My most recent endeavours include: biological oceanographic studies of the central Canadian Arctic, Canadian Beaufort Sea (investigating phytoplankton bloom dynamics, sea ice bio-optics and ice algal productivity, photophysiology and taxonomy) and Hudson Bay (investigating freshwater and dissolved organic carbon input and export), and biophysical modeling of the ice algae ecosystem.

I think Peter Ward's theory probably has O2 sinking for other reasons, an imbalance of the burial and weathering of organic carbon over geologic time for example.

Earth system models disagree on the fate of soil organic carbon under climate change.

Eran Hood, professor of environmental science at the University of Alaska Southeast in Juneau, and colleagues report in Nature Geoscience that they developed a database of dissolved organic carbon found in 300 samples collected from glaciers on five continents.