photosynthetically active radiation

"Test of current definitions of photosynthetically active radiation against leaf photosynthesis data".

Photographic estimation of photosynthetically active radiation: evaluation of a computerized technique.

After treatment the tomato seedlings were incubated at 30 C for 48h under fluorescent lights providing 200μmolm -2 s -1 of photosynthetically active radiation.

The range of photosynthetically active radiation for PNS bacteria is 400-1000 nm.

"Photosynthetically active radiation".

Air temperature, vapor pressure deficit, soil moisture, light intensity and levels of photosynthetically active radiation (PAR) all change at edges.

It is also common for such systems to also measure soil temperature, soil moisture and PAR (photosynthetically active radiation).

On a molecular level, the theoretical limit in efficiency is 25% for photosynthetically active radiation at the Chlorophyll-a absorbance peak (wavelength of 680 nanometers).

Modern photosynthetic systems may also be designed to measure leaf temperature, chamber air temperature, PAR (photosynthetically active radiation), and atmospheric pressure.

Greater amounts of photosynthetically active radiation in coral skeletons causes an increase in endolithic algae biomass and production of photoassimilates.

Photosynthetically active radiation (PAR) is usually reported in microeinsteins per second per square meter (μE/m/sec).

Usually calculations are performed for either photosynthetically active radiation (400-700 nanometers) or insolation integrated over all wavelengths, measured in kilowatt-hours per square meter (kW h/m).

In professional farming, radiometric (watt/metre or microeinstein /second meter) or photosynthetically active radiation weighted (PAR watt) units are used instead.

Live green plants absorb solar radiation in the photosynthetically active radiation (PAR) spectral region, which they use as a source of energy in the process of photosynthesis.

During bleaching, the loss of zooxanthellae decreases the amount of light absorbed by coral tissue, which allows increased amounts of photosynthetically active radiation to penetrate the coral skeleton.

To accommodate the algae, the anemone must provide concentrated carbon dioxide to their intracellular photosynthetic guests as well as photosynthetically active radiation (PAR) to fuel the photosynthetic process.

Water allows so-called "PAR" light (Photosynthetically active radiation, the light that plants use to grow) to pass, while "NIR" (Near Infra Red) light is absorbed.

However, the ability to perceive and respond to shade plays a very important role in all plants: they are sessile by nature and access to photosynthetically active radiation is essential for plant nutrition and growth.

Individuals that live in microhabitats that are deficient in photosynthetically active radiation (PAR), such as under docks or in caves, lack symbionts and are pale yellow to white in color.

For instance: 1) the panels are built with an "air pocket" sandwiched between two layers to provide extra insulation 2) it allows photosynthetically active radiation to pass through (wavelengths of light that plants can use!)

Another suppressive factor on growth rate is the high turbidity of the Estuary, which limits the ability of photosynthetically active radiation (PAR) to penetrate beyond the top few centimeters of the water column.

Photosynthetically active radiation, often abbreviated PAR, designates the spectral range (wave band) of solar radiation from 400 to 700 nanometers that photosynthetic organisms are able to use in the process of photosynthesis.

This product is combined with the soil covered classified into the following - to obtain the global monthly fields, time-varying, of fraction of photosynthetically active radiation absorbed by the green canopy (FPAR).

Primary production on land is a function of many factors, but principally local hydrology and temperature (the latter covaries to an extent with light, specifically photosynthetically active radiation (PAR), the source of energy for photosynthesis).

Following these conditions, seedlings were incubated at 30 C for 4h under fluorescent lights providing 200μmolm -2 s -1 photosynthetically active radiation before the terminal leaflet of leaf 1 was harvested and immediately frozen in liquid N 2.