Harnessing heat to boost the rate of water movement allows these trees to take advantage of «narrow daily windows»
for photosynthesis during the short Sierra summer.
Not exact matches
Here, we show
for the first time that
during severe drought, the rate at which they «inhale» carbon through
photosynthesis can decrease.
Plankton plays an important role in the ocean's carbon cycle by removing half of all CO2 from the atmosphere
during photosynthesis and storing it deep under the sea — isolated from the atmosphere
for centuries.
Trees are thirsty
for the potent greenhouse gas carbon dioxide, soaking it up
during photosynthesis and storing it in their roots, branches and leaves.
Closer examination showed that five of the most promising strains had greater relative water content
during drought conditions, and also used more light
for photosynthesis, and contained more chlorophyll.
Inspiration
for the new catalyst came from nature; Nocera studied the chain of processes that take place
during photosynthesis, such as how plants use the energy from sunlight to rearrange water's chemical bonds.
During this time, bacteria that can use hydrogen sulfide
for photosynthesis are as happy as clams.
It is produced
during photosynthesis in plants,
for example, and its production in skin cells has been linked to aging and cancer development.
The researchers engineered a strain in which a Synechococcus gene normally turned on
during photosynthesis signals its activity by switching on the gene
for luciferase, an enzyme from another bacterium that drives a light - emitting chemical reaction.
Different pigments serve different functions: Green chlorophyll, which dominates
during the growing season, absorbs light energy
for photosynthesis, the conversion of carbon and water to sugar.
Forests and other land vegetation currently remove up to 30 percent of human carbon dioxide emissions from the atmosphere
during photosynthesis, but thanks to this latest study, experts now know that we have tropical forests to thank
for a great deal of this work - absorbing a whopping 1.4 billion metric tons of CO2 out of a total total global absorption of 2.5 billion metric tons.
A crucial piece of the puzzle behind nature's ability to split the water molecule
during photosynthesis that could help advance the development of artificial
photosynthesis for clean, green and renewable energy has been provided by an international collaboration of scientists led by researchers with the Lawrence Berkeley National Laboratory (Berkeley Lab) and the SLAC National Accelerator Laboratory.
To quantify longer - term trends
during different stages of restoration, the researchers measured
photosynthesis and respiration
for two 1 - year intervals 8 years apart, once in 2002 — 2003 and again in 2010 — 2011.
«THE stable carbon isotopic (13C / 12C) record of twentieth - century tree rings has been examined1 - 3
for evidence of the effects of the input of isotopically lighter fossil fuel CO2 (δ 13C ~ -25 ‰ relative to the primary PDB standard4), since the onset of major fossil fuel combustion
during the mid-nineteenth century, on the 13C / 12C ratio of atmospheric CO2 (δ 13C ~ -7 ‰), which is assimilated by trees by
photosynthesis.
JCAP will capitalize on advanced capabilities developed
during its initial five years of research, including sophisticated characterization tools and unique automated high - throughput experimentation that can quickly make and screen large libraries of materials to identify components
for artificial
photosynthesis systems.
Given that
during the night the Earth gives back to space all the energy it receives from the Sun
during the day, making due allowance
for that temporarily stored by
photosynthesis and other natural processes, maybe your peanut might loom quite large in the affairs of men.
While 50 % of the sequestered carbon formed
during photosynthesis is respired before sinking into the dark depths, a tremendous pool of dissolved organic carbon has been created that may not be respired
for decades, centuries or millennia and slowly contributes to the pool of DIC at various depths and locations (Giorgiou 2002).
For example
during photosynthesis CO2 is consumed causing pH to rise.
The combination of deployment of the MODIS satellites starting in 1998 and a widespread drought in the Amazon
during July - September 2005 would appear to have provided the first opportunity
for ecologists to observe an alternative cause of increased
photosynthesis besides increased transpiration.
[Response: Your argument misses the point in three different and important ways, not even considering whether or not the Black Hills data have any general applicability elsewhere, which they may or may not: (1) It ignores the point made in the post about the potential effect of previous, seasonal warming on the magnitude of an extreme event in mid summer to early fall, due to things like (especially) a depletion in soil moisture and consequent accumulation of degree days, (2) it ignores that biological sensitivity is far FAR greater
during the warm season than the cold season
for a whole number of crucial variables ranging from respiration and
photosynthesis to transpiration rates, and (3) it ignores the potential
for derivative effects, particularly fire and smoke, in radically increasing the local temperature effects of the heat wave.
While the scientific challenges of producing such fuels are considerable, JCAP will capitalize on state - of - the - art capabilities developed
during its initial five years of research, including sophisticated characterization tools and unique automated high - throughput experimentation that can quickly make and screen large libraries of materials to identify components
for artificial
photosynthesis systems.