Articles | Volume 12, issue 13
https://doi.org/10.5194/bg-12-4149-2015
https://doi.org/10.5194/bg-12-4149-2015
Research article
 | 
14 Jul 2015
Research article |  | 14 Jul 2015

Monitoring seasonal and diurnal changes in photosynthetic pigments with automated PRI and NDVI sensors

J. A. Gamon, O. Kovalchuck, C. Y. S. Wong, A. Harris, and S. R. Garrity

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Cited articles

Adams, W. W., Demmig-Adams, B., Rosenstiel, T. N., Brightwell, A. K., and Ebbert, V.: Photosynthesis and photoprotection in overwintering plants, Plant Biol., 4, 545–557, https://doi.org/10.1055/s-2002-35434, 2002.
Barton, C. V. M. and North, P. R. J.: Remote sensing of canopy light use efficiency using the photochemical reflectance index – Model and sensitivity analysis, Remote Sens. Environ., 78, 264–273, https://doi.org/10.1016/s0034-4257(01)00224-3, 2001.
Castro-Esau, K. L., Sanchez-Azofeifa, G. A., and Rivard, B.: Comparison of spectral indices obtained using multiple spectroradiometers, Remote Sens. Environ., 103, 276–288, https://doi.org/10.1016/j.rse.2005.01.019, 2006.
Coops, N. C., Hilker, T., Hall, F. G., Nichol, C. J., and Drolet, G. G.: Estimation of light-use efficiency of terrestrial ecosystem from space: A status report, Bioscience, 60, 788–797, https://doi.org/10.1525/bio.2010.60.10.5, 2010.
DeFries, R. S. and Townshend, J. R. G.: NDVI-derived land-cover classifications at a global-scale, Int. J. Remote Sens., 15, 3567–3586, 1994.
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NDVI and PRI sensors (SRS, Decagon Inc.) exhibited complementary responses during spring photosynthetic activation in evergreen and deciduous stands. In evergreens, PRI was most strongly influenced by changing chlorophyll:carotenoid pool sizes over the several weeks of the study, while it was most affected by xanthophyll cycle pigment activity at the diurnal timescale. These automated PRI and NDVI sensors offer new ways to explore environmental and physiological constraints on photosynthesis.
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