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An Incubator for the Simulation of a Fluctuating Light Climate in Studies of Planktonic Primary Productivity
Author(s) -
Gervais Frank,
Hintze Thomas,
Behrendt Horst
Publication year - 1999
Publication title -
international review of hydrobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.524
H-Index - 52
eISSN - 1522-2632
pISSN - 1434-2944
DOI - 10.1002/iroh.199900008
Subject(s) - incubator , photic zone , phytoplankton , productivity , photosynthesis , environmental science , plankton , photosynthetic efficiency , photobioreactor , biological system , light intensity , incubation , algae , water column , chemistry , botany , biology , ecology , biomass (ecology) , physics , optics , nutrient , biochemistry , macroeconomics , microbiology and biotechnology , economics
A laboratory system for the quantification of phytoplankton photosynthesis under fluctuating light climate conditions is described. It consists of 2 temperature‐controlled incubators with a variable light supply, an algal batch culture in incubation bottles with appropriate stirrers and a set of oxygen electrodes to monitor algal photosynthesis. By the rotation of special grey filters between the incubator and the light source, a regular up and down movement in the water column is simulated in up to 7 parallel bottles. Different ratios of euphotic depth to mixing depth and different velocities can be applied. Simultaneously, 8 bottles can be incubated under constant light. The system is demonstrated in experiments with Chlamydomonas sp. Further possibilities of application are proposed.