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Photosynthetic efficiency as function of nutrient status in phytoplankton from irrigation and drinking-water reservoirs, determined by photoacoustics

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The efficiency of energy storage in photosynthesis is a sensitive indicator of different kinds of stress to which plants are exposed. In this study, phytoplankton samples were obtained from irrigation and drinking-water reservoirs differing in trophic status, and their photosynthetic efficiency was examined using the photoacoustic method. We examined changes in photosynthetic energy storage efficiency over time in natural samples collected from the field, and following their enrichment with nitrogen and phosphorus. It was evident that as phytoplankton grew, both nutrients became depleted, nitrogen earlier than phosphorus.

Affiliations: 1: The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University pinhasy2@zahav.net.il ; 2: Central Laboratory, Mekorot National Water Co. ; 3: Department of Civil and Environmental Engineering, Technion—Israel Institute of Technology ; 4: The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University

10.1560/IJPS.56.1-2.69
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/content/journals/10.1560/ijps.56.1-2.69
2008-05-13
2018-06-19

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