Hence, it could be suggested that the small differences in the calcification rates observed between 100 mg / L and 200 mg / L calcium additions during the day could be a result of relatively mediocre
photosynthetic activities of the endo - symbionts, but this should be further studied.
Recently, laboratory experiments with live foraminifera have demonstrated that
the photosynthetic activity of algal symbionts and the carbonate ion concentration -LRB-[CO32 --RSB--RRB- of seawater also affect shell d18O values.
Factors affecting N fixation are growth of bacteria and / or host plants,
photosynthetic activity of host plants, available mineral N and type of bacteria, Stout (1990).
Not exact matches
Listening to how projected sound reverberates through kelp beds allows scientists to eavesdrop on environmental factors such as water temperature and
photosynthetic activity, bioacoustician Jean - Pierre Hermand reported June 28 at a meeting
of the Acoustical Society
of...
Listening to how projected sound reverberates through kelp beds allows scientists to eavesdrop on environmental factors such as water temperature and
photosynthetic activity, bioacoustician Jean - Pierre Hermand reported June 28 at a meeting
of the Acoustical Society
of America.
Incorporation
of CNTs into chloroplasts extracted from plants enhanced choloroplast's
photosynthetic activity by 49 % compared to the control.
This nano - bio approach is believed to increase the breadth
of the solar spectrum that is used to make energy and is expected to contribute to the development
of biomimetic materials with enhanced
photosynthetic activity and improved stability towards oxidative degradation.
SAN FRANCISCO, CALIFORNIA — About 1 %
of the light that strikes plants is re-emitted as a faint, fluorescent glow — a measure
of photosynthetic activity.
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.
His research team envisions a series
of interacting processes, or feedbacks, that maintained oxygen at very low levels principally by modulating the availability
of life - sustaining nutrients in the ocean and thus oxygen - producing
photosynthetic activity.
To remedy that absence, Golden's lab, along with plant physiologist Takao Kondo and colleagues at Nagoya University in Japan, developed an easy - to - read gauge
of changing
photosynthetic activity in colonies
of the cyanobacterium Synechococcus, a blue - green alga whose one - celled organisms divide as often as once every 5 to 6 hours.
«If trends continue, we can expect probably a doubling
of primary production,» in
photosynthetic activity undertaken by millions
of algae, he adds.
Scientists from the BOREA research unit first suspected the presence
of microalgae in Paris streets after noting the characteristic green or brown color
of gutter water and observing the presence
of bubbles, which are the result
of photosynthetic activity.
The electrical capacitance, which shows the ability
of a leaf to store a charge, stayed roughly constant at a minimum value during dark periods and increased rapidly during light periods, implying that electrical capacitance was a reflection
of photosynthetic activity.
The innovative aspect
of this
activity was the notion that the concept
of macroscopic devices could be extended to the molecular level, and that it was possible to design supramolecular systems that, upon stimulation with external energy stimuli such as UV / Visible light, are capable
of performing a variety
of specific functions: (i) systems for information processing (e.g., wires, switches, antennas, plug / socket systems, extension cables, memories, logic gates, encoder / decoder, rudimentary neuron - like systems), (ii) devices that when powered by chemical energy or electrochemical energy or by light exhibit machine - like behavior (e.g., piston / cylinder systems, shuttles, lifts, rotary rings, dendritic photo - switchable boxes), and (iii) components for artificial
photosynthetic systems.
In a study
of local ecosystem sustainability, Mohan Wali and his colleagues at Ohio State University noted that as temperature rises,
photosynthetic activity in plants increases until the temperature reaches 20 degrees Celsius (68 degrees Fahrenheit).
As I near the end
of my life, I am amazed at how much power, technology, wealth and consumption humanity has acquired, and that has transformed our lives while at the same time undermining the very life support systems on which our existence and well - being depend — air, water, soil and food,
photosynthetic activity and biodiversity.
The fluctuations in the CO2 curve (top) reflect seasonal changes in
photosynthetic activity, which cause small differences between summer and winter concentrations
of CO2.
In the case
of the cyanobacterial mat - covered polygonal ponds on Bylot Island, the negative CO2 flux most likely resulted from high
photosynthetic rates in the mats, and the modern dates for CH4 suggest that abundant labile compounds coming from a modern autochthonous pool could be the main C supply for microbial
activity, including methanogenesis.
(1) globally,
photosynthetic activity (fixation
of biomass) on both the land and oceans is demonstrably on the increase as a consequence
of both the so - called CO2 fertilization effect AND the vastly increased anthropogenic N & P nutrient input to the continental shelves; and this in turn is
Because plants grow more efficiently under diffuse light conditions such as this, global
photosynthetic activity could increase, pulling more
of the greenhouse gas carbon dioxide out
of the atmosphere.
Human
activity has also had a net negative effect on total global
photosynthetic productivity since the most productive areas
of land are directly in the path
of urban sprawl [24].
Dr. Kiang also relates this work to research in astrobiology, particularly with regard to how
photosynthetic activity produces signs
of life at the global scale (e.g., biogenic gases like oxygen and
photosynthetic pigments like chlorophyll) and how these may exhibit adaptations to alternative environments on extrasolar planets, resulting in other «biosignatures» that might be detected by space telescopes.