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

Yulia Pinchasov, Ram Porat, Benjamin Zur, Liviu Singer, Zvy Dubinsky

Research output: Contribution to journalArticlepeer-review

Abstract

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.

Original languageEnglish
Pages (from-to)69-74
Number of pages6
JournalIsrael Journal of Plant Sciences
Volume56
Issue number1-2
DOIs
StatePublished - 2008

Bibliographical note

Funding Information:
This research was supported by grant no. 2002-396 from the United States-Israel Binational Science Foundation (BSF), Jerusalem, Israel.

Keywords

  • Nutrients
  • Photoacoustics
  • Photosynthesis
  • Phytoplankton

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