Field experiments for in situ measurement of photosynthetic efficiency and quantum yield

Z. Dubinsky, T. Berman, F. Schanz

Research output: Contribution to journalArticlepeer-review

48 Scopus citations

Abstract

A method for the in situ determination of kc¯, the average in vitro spectral specific attenuation coefficient of chlorophyll is described. This method takes into account changes in the spectral distribution of underwater light throughout the water column using a commonly available cosine collector. The kc¯ values, together with irradiance and primary productivity data gathered during the first GAP workshop at Lake Constance are used to calculate photosynthetic efficiencies Ez and quantum yields φ at different depths. The depth related changes found in φ and kc¯ are discussed, as is the question of constancy of φmax at low irradiance levels.

Original languageEnglish
Pages (from-to)339-349
Number of pages11
JournalJournal of Plankton Research
Volume6
Issue number2
DOIs
StatePublished - 1984

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