Investigations on the Photosynthetic Activity of Cyanobacteria of the Baltic Sea Using a Mobile Picosecond-Fluorimeter

Maier-Schwartz, K.; Terjung, Frank; Otteken, D.; Fischer, Ulrich; Meyer, Beate; Rethmeier, Jörg

doi:10.1007/978-3-662-08252-2_19

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1997

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“…Lifetime analysis has also been applied to oceanographic studies. A correlation between the fluorescence decay and the production of oxygen due to adaptation of cyanobacteria to sulfide stress has been observed in the Baltic Sea using a mobile picosecond fluorimeter (Maier-Schwartz et al, 1993).…”

Section: Introductionmentioning

confidence: 98%

Measurement of laser‐induced fluorescence decay and reflectance of plant canopies

Goulas¹,

Camenen

Guyot³

et al. 1997

Remote Sensing Reviews

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A new lidar fluoro-sensor, for the remote characterization of the geometry and of the physiological status of plant canopies, is described. It is based on the use of a laser delivering very short pulses (<100 ps) and on the temporal analysis of both fluorescence and backscattered signals. In a first step, the deconvolution of the backscattered signal gives the level and the relative area of leaves illuminated by the laser beam. In a second step, this information on the canopy geometry is used to deduce the mean chlorophyll fluorescence lifetime, that is considered as an indicator of the photosynthetic activity. Field and laboratory measurements performed with the prototype show that the results obtained agree quite well with classical near-contact chlorophyll fluorescence measurements and can bring also information on plant canopy geometry.

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Section: Introductionmentioning

confidence: 98%