Sentences with phrase «organic carbon concentrations»

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.

«Microbial cell and organic carbon concentrations in this accreted ice are significantly higher than those in the overlying ice, which implies that the subglacial environment is the source,» says Christner.

When he tested soils from the experimental plots, he saw soil organic carbon concentrations rise gradually with increases in nitrogen fertilization at soil depths from 0 to 6 inches, although not at deeper ones.

But unexpectedly in this case, «we didn't see improvement in soil aggregate stability even though soil organic carbon concentration increased,» Blanco says, noting that soil particles usually bind together more strongly in aggregates as soil organic carbon concentrations rise.

Not exact matches

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.

According to Matyas Ripszam, Umeå University, this change will have high impact on the organic pollutants on the organic pollutants in the northern Baltic Sea, since this carbon can interact with the pollutants and decrease their concentration in the water.

Xiao used battery powered aerosol monitors to measure indoor concentrations of fine particulate matter, or particles 2.5 micrometers in diameter or smaller, which consists mainly of black carbon and organic carbon.

The team's findings provide one possible mechanism for an observed increase in the concentration of dissolved organic carbon in the surface waters of North America and Europe during the last few decades, and have implications for management of water quality in coastal zones worldwide.

Without a regular input of organic matter, soil microbial diversity decreases and the carbon concentration is lowered.

This in turn triggered decreases in marine phosphate concentrations, productivity, organic carbon burial and ultimately oxygen.

As a result, the concentration of this greenhouse gas is reduced and other sources of organic carbon that are usually applied as biotechnological substrates, such as agricultural products, are no longer required.

That deep water is not only rich in nutrients, it also has relatively high concentrations of carbon dioxide, both because it is cold (cold water can absorb and hold more carbon dioxide than warm water) and because the decomposition of organic matter that sinks into the depths releases carbon dioxide.

These highly sensitive artificial sense organs can reliably detect gases of all kinds, from toxic carbon monoxide to carcinogenic organic compounds, and can determine their concentrations quantitatively.

It is a true multi-talent: Its calcium carbonate platelets carry organic material from the surface to the deep ocean, which regulates carbon dioxide concentrations in the atmosphere.

Based on accumulating measurements of microbes in the subglacial environment, he calculates that the concentration of cell and organic carbon in the Earth's ice sheets, or «cryosphere», may be hundreds of times higher than what is found in all the planet's freshwater systems.

Indoor air quality is defined by the concentrations of various pollutants, including carbon dioxide (CO2), volatile organic compounds (VOCs), moulds, dusts and airborne fungi.

A rapid depletion in 13C between about 17,500 and 14,000 years ago, simultaneous with a time when the CO2 concentration rose substantially, is consistent with release of CO2 from an isolated deep - ocean source that accumulated carbon due to the sinking of organic material from the surface.

The soils may have similarly held organic matter and experienced a carbon loss from the permafrost which would have contributed to past changes in atmospheric CO2 concentrations.

Many previous studies have measured concentrations of carbon in the soil from organic sources, and here Papanicolaou et al. contribute new results that account for the uneven slope of the ground, focusing on land that is constantly disturbed by human activities.

Black carbon (BC) and organic carbon (OC) concentrations in the Zuoqiupu ice core for the monsoon (June - Sept) and non-monsoon (Oct - May) seasons, and the annual mean.

These characteristics included morphometric, geographic, and historical properties of study reservoirs (i.e., depth, residence time, volume, surface area, age, and latitude), biologically significant water column solute concentrations (i.e., NO3 — , total phosphorus, and dissolved organic carbon), and metrics of ecosystem primary productivity (i.e., trophic status and mean or modeled surface water chlorophyll a concentrations; see the supplemental materials for a complete list of the tested variables).

The simulated global mean organic carbon (OC) concentrations increase with altitude up to a mean pressure level of about 800 - 900 hPa, and then decrease with altitude (see Fig. 4).

However, the extent of black - carbon - induced warming is dependent on the concentration of sulphate and organic aerosols — which reflect solar radiation and cool the surface — and the origin of the black carbon3, 4.

On the other hand, organic eutrophication (without fertilizers) does tend to cause an increase in respiration, increasing the carbon dioxide concentration and lowering the pH again.

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.

He is an organic geochemist with specific expertise in geomicrobiology and palaeoclimate reconstruction, with an emphasis on developing and applying molecular proxies for ancient carbon dioxide concentrations and temperatures.

They found that such water supplies had higher concentrations of both organic carbon and potentially harmful disinfection byproducts.

From 1991, when the experiment began, the plots subjected to 5C warming lost about 17 % of the carbon that had been stored in the top 60 cm of the soil, where the greatest concentration of organic matter is to be found.