Sentences with phrase «inorganic carbon»

The ocean has dissolved inorganic carbon in three forms — most as bicarbonate, a little bit as carbonate and a very tiny part as carbon dioxide, or CO2.

these patterns further, our research also involved interpretations of the observations by models, measurements of inorganic carbon in sea water, and of CO2 in air near growing land plants.

That outlines the chemistry that links most of the storage of inorganic carbon in the ocean to the amount of base cations (Ca, Mg,) in ocean water.

This study presents broad - scale carbon chemistry data from Great Barrier Reef (GBR) inshore coral reefs to test for regional and season differences between inorganic carbon system parameters in coastal waters.

From November to March of each year, satellite instruments detect an abundance of particulate inorganic carbon in far southern waters.

Now scientists have identified some suspects: «twilight» microbes from 2,625 feet (800 meters) below the ocean surface that are turning inorganic carbon into useable food.

Deep water often contains a lot of dissolved inorganic carbon from sinking organic matter which would be released by the process, and so would greatly reduce, if not eliminate, any benefits.

I. Measuring inorganic carbon parameters in seawater: Sample collection and measurement protocols, use of CO2SYS and seacarb programs

Using inorganic carbon measurements from an international survey effort in the 1990s and a tracer - based separation technique, we estimate a global oceanic anthropogenic carbon dioxide (CO2) sink for the period from 1800 to 1994 of 118 ± 19 petagrams of carbon.

The undercurrent is supplied with low pH, low oxygen, and high inorganic carbon waters from the eastern tropical Pacific.

The marine biota also redistribute carbon: marine organisms grow organic tissue and calcareous shells in surface waters, which, after their death, sink to deeper waters, where they are returned to the dissolved inorganic carbon reservoir by dissolution and microbial decomposition.

Nitrospinae bacteria, which use the nitrogen compound nitrite to «fix» inorganic carbon dioxide into sugars and other compounds for food and reproduction, are responsible for 15 to 45 percent of such carbon fixation in the western North Atlantic Ocean, researchers report in the...

The data come from deep - sea sediment cores dating to 205 million years ago that contain inorganic carbon - rich minerals as well as the organic remains of single celled marine phytoplankton.

And the silhouettes are inorganic carbon injected by the vent and molded into suggestive shapes by the growth of mineral crystals.

Microscopic globules of graphite in the rock, documented in 1999 by geologist Minik Rosing at the University of Copenhagen, are unusually low in a heavy carbon isotope that gets excluded when inorganic carbon is converted into living material.

Divergent assemblage patterns of abundant and rare microbial sub-communities in response to inorganic carbon stresses in a simultaneous anammox and denitrification (SAD) system — Duntao Shu, Bioresource Technology

Continue reading «An assessment of direct dissolved inorganic carbon injection to the coastal region: a model result»

Evidence indicates the massive die - off was linked with an abrupt drop in productivity, the rate at which inorganic carbon is turned into organic carbon through processes such as photosynthesis.

A lot of this becomes disolved inorganic carbon (DIC) carried by rivers into the Arctic ocean.

In other words, if all of the terrestrial carbon today (in forests, animals, soils, etc.) were converted to carbon dioxide and returned to the global inorganic carbon pool, the change in the global carbon isotopic ratio would only be a third as big as that observed during the PETM!

Uptake of anthropogenic CO2 changes the surface ocean inorganic carbon system.

Genes putatively related to calcification (e.g. calcium and inorganic carbon transport, H + transport and carbonic anhydrases) have been identified via gene expression studies comparing calcifying and non-calcifying E. huxleyi cells [25 — 29], or in short - term experiments where calcification was regulated by limitation of ions needed for calcification (i.e. Ca2 +, HCO3 − / CO32 − [26,30,31]-RRB-.

Using satellite observations of particulate inorganic carbon (PIC), chlorophyll, and sea surface temperature, a recent study reports a decrease in phytoplankton calcification in the Southern Ocean over the satellite record (1998 to 2014).

And because oceans contain the greatest concentration of inorganic carbon by far, the question remains has anthropogenic CO2 significantly exacerbated the corrosiveness of natural upwelling?

They tracked the flows of organic and inorganic carbon into and out of coastal waters.

They found that the isotopic signatures of sulfur (in sulfate), carbon (in dissolved inorganic carbon) and strontium from water samples collected from tributaries adjacent to mountaintop mining sites are distinguishable from those collected from unaffected upstream waters.

Although some lakes can also absorb CO2 at their surfaces similar to the way oceans do, the increases in these other sources of organic and inorganic carbon are likely the dominant factor, says Scott Higgins, a research scientist at the International Institute for Sustainable Development's Experimental Lakes Area, a natural laboratory of 58 small lakes in Ontario.

The reservoirs are the atmosphere, the terrestrial biosphere (which usually includes freshwater systems and non-living organic material, such as soil carbon), the oceans (which includes dissolved inorganic carbon and living and non-living marine biota), and the sediments (which includes fossil fuels).

Scientists measured dissolved inorganic carbon and alkalinity, which allows them to calculate pH and the saturation state for aragonite, a carbonate mineral that marine organisms need to build their shells.

To explain this, Cai built a biogeochemical model to simulate the way oxygen is consumed and inorganic carbon and acids are produced to match the observations measured in the Chesapeake Bay.

The researchers measured oxygen, hydrogen sulfide, pH, dissolved inorganic carbon and total alkalinity.

Water samples were taken to analyze various parameters for oceanographic and water quality that serve as proxies for total alkalinity (TA) and dissolved inorganic carbon (DIC).

Both processes involve the transport and the use of inorganic carbon (Ci) coming from seawater for photosynthesis, and from animal metabolism for calcification.

Key words: Stylophora pistillata; inorganic carbon; biomineralization; CO2 - concentrating - mechanism; Carbonic anhydrase.

They limited data sources to locations around the world in which paleoceanographic data also exist, using seven variables: salinity; potential temperature; oxygen isotope ratios in water; carbon isotope ratios in dissolved inorganic carbon; and concentrations of phosphate, nitrate, and dissolved oxygen.

In order to address the challenges of future ocean acidification at a regional scale, it is necessary to increase the resolution of spatial and temporal monitoring of the inorganic carbon system beyond what is currently available.