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Growth responses of planktonic desmid species in a temperature—light gradient
Author(s) -
COESEL PETER F. M.,
WARDENAAR KLAASJAN
Publication year - 1990
Publication title -
freshwater biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.297
H-Index - 156
eISSN - 1365-2427
pISSN - 0046-5070
DOI - 10.1111/j.1365-2427.1990.tb00294.x
Subject(s) - plankton , growth rate , biology , eutrophication , ecology , mixotroph , range (aeronautics) , light intensity , environmental science , nutrient , bacteria , physics , materials science , heterotroph , genetics , geometry , mathematics , optics , composite material
SUMMARY. 1. Isolates of twelve planktonic desmid species were tested for their growth response in batch culture, using an apparatus that generates crossed gradients of temperature and light intensity. 2. Up to 15°C, growth was mainly temperature‐limited. At higher temperatures, there was an increasing effect of light limitation. Optimal growth temperatures were in the range 25–30°C. 3. Highest specific growth rates varied from 0.28 to 1.34 day −1 . Species with lowest growth rates originated from oligo‐mesotrophic habitats, those with highest growth rates from eutrophic ones. 4. Ecophysiological aspects are discussed in some detail, as well as the significance of the experimental data for distributions in the field.