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The effect of temperature on growth and reproduction of Scytosiphon complanatus (Fucophyceae) from Greenland
Author(s) -
Pedersen Poul Møller,
Kristiansen Aase,
Moseholm Lars
Publication year - 1987
Publication title -
nordic journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.333
H-Index - 33
eISSN - 1756-1051
pISSN - 0107-055X
DOI - 10.1111/j.1756-1051.1987.tb02040.x
Subject(s) - thallus , biology , botany , asexual reproduction , inoculation , knot (papermaking) , horticulture , chemical engineering , engineering
Scytosiphon complanatus from Greenland was grown under long‐day conditions on a temperature‐gradient device with a temperature range from 5.4°C to 31.8°C. Growth was optimal between 16.0°C and 20.9°C. In a four week experimental period at 5.4°C and 7.5°C growth was slow and not measurable. The inoculated germlings died at temperatures between 24.0°C and 27.5°C. Under all temperatures the prostrate systems, knot filaments or ralfsioid thalli, as well as the parenchymatous macrothalli remained sterile during the experimental period. Prolongation of the growth period showed that formation of swarmers was prevented at temperatures above 18.6°C. The geographic distribution is discussed in relation to these results.