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Proceedings Paper

Problems of laser monitoring of photosynthetic organisms
Author(s): Dmitrii K. Bunin; Viktor V. Fadeev; Pavel S. Venediktov
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Paper Abstract

Monitoring of photosynthetic organisms (PSO) -- phytoplankton and terrestrial vegetation -- is one of the most important tools for controlling the ecological state of the environment. Being the primary element of a trophic chain, PSO play a significant role in the functioning of an ecological system, because they provide an inflow of oxygen into water and the atmosphere and regulate the carbon-dioxide content. Sometimes it is principally necessary to use remote quick-response techniques. In this paper we consider spectroscopic methods that imply an analysis of the optical characteristics of the objects under study and are most convenient in remote regime. Remote methods can be divided into passive and active ones. Passive methods require comparatively simple equipment and, hence, are cheap. They can be used from an aircraft or a satellite providing thus an ability of monitoring large areas. However, results obtained from the Earth's surface albedo can be used only for rough estimations and, as a rule, require calibration on specially selected polygons. Active methods based on exciting and detecting a fluorescent response from the object, are free of these drawbacks. In many cases, the possibility of controlling the regimes of pumping and detection eliminates an ambiguity of the result of measurements and improve their informativity. However, for such methods, the

Paper Details

Date Published: 2 January 1995
PDF: 11 pages
Proc. SPIE 2370, 5th International Conference on Laser Applications in Life Sciences, (2 January 1995); doi: 10.1117/12.197496
Show Author Affiliations
Dmitrii K. Bunin, Moscow State Univ. (Russia)
Viktor V. Fadeev, Moscow State Univ. (Russia)
Pavel S. Venediktov, Moscow State Univ. (Russia)

Published in SPIE Proceedings Vol. 2370:
5th International Conference on Laser Applications in Life Sciences
Pavel A. Apanasevich; Nikolai I. Koroteev; Sergei G. Kruglik; Victor N. Zadkov, Editor(s)

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