نتایج جستجو برای: photosynthetically active radiation

تعداد نتایج: 668272  

Journal: :SSRG international journal of geoinformatics and geological science 2022

Using MODIS data, the present study analyzed spatial distributions and annual variability of Bio-Geochemical concentrations from 2011 to 2020 in Northern Indian Ocean. The observed significant variations parameters such as PAR (Photosynthetically Active Radiation), SST (Sea Surface Temperature), Chlorophyll. Annual composite images MODIS-Aqua derived Chlorophyll & SST, POC were retrieved 2020, ...

Journal: :Indian journal of experimental biology 2008
Shailendra P Singh Sunita Kumari Rajesh P Rastogi Kanchan L Singh Rajeshwar P Sinha

Continuous depletion of the stratospheric ozone layer has resulted in an increase in ultraviolet-B (UV-B; 280-315 nm) radiation on the earth's surface which inhibits photochemical and photobiological processes. However, certain photosynthetic organisms have evolved mechanisms to counteract the toxicity of ultraviolet or high photosynthetically active radiation by synthesizing the UV-absorbing/s...

2011
Mirco Boschetti Daniela Stroppiana Roberto Confalonieri Pietro Alessandro Brivio Alberto Crema Stefano Bocchi

This study presents the application of a Light Use Efficiency model that exploits MODIS satellite data to assess rice yield in Italy. Field experimental data acquired in 2003 and 2004 were used to define model’s parameters (Radiation Use Efficiency and Harvest Index) and to calibrate the relation between MODIS-EVI and the fraction of Absorbed Photosynthetically Active Radiation (fAPAR). Satelli...

2011
Kathryn A. Yurkonis Brian J. Wilsey Kirk A. Moloney

Methods: Experimental plots (4 m) were planted with seedlings of four grassland species arranged into increasingly larger groups (patches) of conspecific individuals while controlling plot-scale richness and evenness. Available light (photosynthetically active radiation; PAR) at the soil surface was measured each month for three growing seasons after planting. Species’ relative abundances were ...

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