Sentences with phrase «photosynthetic carbon»

The result was about double that of net productivity, which balances photosynthetic carbon uptake in oceans with carbon released by the respiration of primary producers in the ocean.

It can be expressed on a short - term basis as the ratio of photosynthetic carbon gain per unit transpirational water loss, or on a seasonal basis as the ratio of net primary production or agricultural yield to the amount of available water.

These single - celled organisms are the principal agents of photosynthetic carbon fixation in the ocean.

water - use efficiency carbon gain in photosynthesis per unit water lost in evapotranspiration; can be expressed on a short - term basis as the ratio of photosynthetic carbon gain per unit transpirational water loss, or on a seasonal basis as the ratio of net primary production or agricultural yield to the amount of available water

1972 Andrew Alm Benson for his discovery of ribulose among products of photosynthetic carbon dioxide assimilation and for his other contributions to the elucidation of this process

Combining the capture of photosynthetic carbon from biomass with CCUS can enable negative emissions.

Not exact matches

Fast - growing plants have higher photosynthetic rates, which are also influenced by light, temperature, vapor pressure deficit, and carbon dioxide.

The main body has been divided into sections dealing with the three major biogenic GHGs including a section concerning carbon dioxide (CO2) emissions and photosynthetic absorption and a section that deals with nitrous oxide (N20), and methane (CH4) emissions (and assimilation in some limited cases).

His reengineered photosynthetic cells would take in carbon dioxide and sunlight and spew out hydrocarbons ready for the ExxonMobil refinery (the oil giant that has provided Venter's company Synthetic Genomics with $ 300 million in funding to date).

About 2.7 billion years ago, photosynthetic algae in the oceans started making their mark, taking in carbon dioxide as fuel and sending the by - product — oxygen — skyward.

A novel nanobionic approach has been developed that imparts higher photosynthetic activity to plant leaves and extracted plant chloroplasts, the biological organelles that convert captured carbon dioxide into solar energy.

The corals eat but don't digest these single - celled photosynthetic algae, which then reside inside the corals and feed them the carbon sugars created during photosynthesis.

Photosynthetic chromatophores are bubbles of liquid that form on the membranes of bacteria that harness sunlight, carbon dioxide and water to produce the energy needed for respiration and other functions.

Less than a micrometer in diameter, it's the most abundant photosynthetic organism on Earth, taking up carbon dioxide and releasing oxygen.

«Wheat's photosynthetic pathway evolved 100 million years ago when atmospheric carbon dioxide levels were up to 10 times higher than they are today,» he said.

And will be taken up by the plant and will increase the concentration of carbon dioxide around RuBisCo inside the plant and increase its activity and photosynthetic yields.

But no one knows for sure whether the fungi can make use of the extra carbon supplied by plants when they raise their photosynthetic rate.

The carbon contained in the zircon has a characteristic signature — a specific ratio of carbon - 12 to carbon - 13 — that indicates the presence of photosynthetic life.

The mostly likely explanation is that the carbon nanotubes absorb more sunlight and donate electrons to the photosynthetic process, according to Giraldo and the rest of the team, or the nanotubes may be speeding up the transfer of electrons within the photosynthetic processes.

Most plants rely on the C3 process, which uses carbon dioxide and fixes three - carbon compounds in a photosynthetic cycle, but a few have evolved the more efficient C4 variety, developing a competitive edge by fixing four carbons per cycle.

Millet is a so - called C4 plant, which has a very efficient photosynthetic system for capturing carbon dioxide, whereas most other plants that grow in northern China are less efficient C3 plants.

An analysis of GOME - 2 data published in April suggests that carbon - cycle models underestimate peak photosynthetic output by as much as 50 — 75 % in parts of India, China and the African Sahel, and by 40 — 60 % in the «corn belt» of the US Midwest, which accounts for more than 40 % of the world's maize (corn) production (L. Guanter et al..

These photosynthetic microorganisms grab CO2 from the atmosphere, and when death beckons, their carbon - rich bodies get buried in the depths.

Primitive photosynthetic microbes were around and may have played a role in the generation of methane and minor usage of carbon dioxide.

(4) Utilizing the natural photosynthetic and transpiration process of trees to lower ambient temperatures and absorb carbon dioxide, thus mitigating the effects of climate change.

Photosynthetic processes are accelerated with the increased availability of carbon dioxide in the atmosphere and, hence, it is conjectured that ring growth would also be correlated with atmospheric carbon dioxide; see Graybill and Idso (1993).

Unicellular photosynthetic microbes — phytoplankton — are responsible for virtually all oceanic primary production, which fuels marine food webs and plays a fundamental role in the global carbon cycle.

Many of these microbes persist today; for example, blue - green (cyanobacteria) or bright green, photosynthetic bacteria use light from the Sun and chlorophyll to convert carbon dioxide and water into «free» molecular oxygen and carbon, made into essential organic substances such as carbohydrates.

In contrast, photoautotrophs, i.e. photosynthetic organisms such as plants and algae, use the energy of sunlight (photo = sunlight) to synthesize the carbon compounds they need to grow and reproduce.

Continue reading «Inorganic carbon and pH dependency of Trichodesmium's photosynthetic rates»

Reasoning that, because it fluctuated daily, water vapour was continually recycling itself in and out of the atmosphere, he turned his attention to carbon dioxide, a gas resident for a long time in the atmosphere whose concentration was only (at that time) dramatically changed by major sources such as volcanoes or major drawdowns such as unusual and massive episodes of mineral weathering or the evolution of photosynthetic plants: events that occur on very long, geological timescales.

In an artificial photosynthetic system, the oxidation of water molecules into oxygen, electrons and protons (hydrogen ions) provides the electrons needed to produce liquid fuels from carbon dioxide and water.

At PBE2018 Howard Griffiths will give a talk on: «Photosynthetic diversity: are we concentrating too much on carbon?»

When printed in a precise pattern onto carbon nanotubes on paper, these photosynthetic bacteria can produce electricity from sunlight, which could power biodegradable environmental and medical sensors.

Photosynthetic performance in C3 plants may decrease significantly as photorespiration rates increase below c. 300 ppmv, limiting energy production and carbon allocation to plant processes.

Discrimination between stable carbon isotopes can indicate the photosynthetic pathway used for carbon fixation (Fig. 8 - 15).

Used as a fuel source, it's essentially carbon neutral because photosynthetic organisms survive by metabolizing CO2, a greenhouse gas.

We simply do not have enough available carbon to burn to do this, ignoring that photosynthetic organisms and calcium carbonate deposition would fight us every step of the way.

The effects vary by region, and they are significant, altering the ocean's carbon cycle from the surface, where photosynthetic organisms fix carbon from the atmosphere, all the way through the water column to the seafloor, where carbon can be sequestered.

Stable carbon isotope ratios from tree rings record changes in the internal concentration of carbon dioxide and, in the northern Boreal zone, are regarded as a proxy for photosynthetic rate, and therefore summer sunshine.

When people do models about «sensitivity to carbon dioxide» do they model changes in total forest area / total photosynthetic surface area??

I'm sure that the more trees and photosynthetic organisms there are out there, the better they will be at mopping up the Carbon Dioxide and hence the less sensitive temperature will be to carbon dioxide.

Increased weed and pest pressure associated with longer growing seasons and warmer winters will be an increasingly important challenge; there are already examples of earlier arrival and increased populations of some insect pests such as corn earworm.64 Furthermore, many of the most aggressive weeds, such as kudzu, benefit more than crop plants from higher atmospheric carbon dioxide, and become more resistant to herbicide control.72 Many weeds respond better than most cash crops to increasing carbon dioxide concentrations, particularly «invasive» weeds with the so - called C3 photosynthetic pathway, and with rapid and expansive growth patterns, including large allocations of below - ground biomass, such as roots.73 Research also suggests that glyphosate (for example, Roundup), the most widely - used herbicide in the United States, loses its efficacy on weeds grown at the increased carbon dioxide levels likely to occur in the coming decades.74 To date, all weed / crop competition studies where the photosynthetic pathway is the same for both species favor weed growth over crop growth as carbon dioxide is increased.72

The result of putting more carbon into the atmosphere than can be taken out of it is a warmer climate, a melting Arctic, higher sea levels, improvements in the photosynthetic efficiency of many plants, an intensification of the hydrologic cycle of evaporation and precipitation, and new ocean chemistry.

Scientists with the U.S. Department of Energy (DOE)'s Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California (UC) Berkeley have created a hybrid system of semiconducting nanowires and bacteria that mimics the natural photosynthetic process by which plants use the energy in sunlight to synthesize carbohydrates from carbon dioxide and water.

Known as zooxanthellae, these algae live within the coral's exposed polyp tissues and are a crucially important photosynthetic source of carbon for the host.

``... the chief factor limiting plant productivity — photosynthetic efficiency — is the level of atmospheric carbon dioxide, which is currently at a relatively low level compared with previous eras in the earth's long history.»

In addition, the photosynthetic organisms will use the CO2 to fix carbon to make glucose.

'' (The) bug would skip the whole photosynthetic sugar - making step... Instead the bug would create liquid fuels directly from hydrogen and carbon dioxide,» Forbes says.

Photosynthetic processes are accelerated with the increased availability of carbon dioxide in the atmosphere and, hence, it is conjectured that ring growth would also be correlated with atmospheric carbon dioxide; see Graybill and Idso (1993).