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Live Algae in Deep Sediment Layers
Author(s) -
Wasmund Norbert
Publication year - 1989
Publication title -
internationale revue der gesamten hydrobiologie und hydrographie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.524
H-Index - 52
eISSN - 1522-2632
pISSN - 0020-9309
DOI - 10.1002/iroh.19890740602
Subject(s) - algae , photosynthesis , sediment , chlorophyll a , oceanography , penetration (warfare) , geology , environmental science , chlorophyll , environmental chemistry , mineralogy , botany , chemistry , biology , paleontology , operations research , engineering
Examination of sediment cores taken from shallow coastal regions of the Baltic showed that some algae were still alive at depths beyond the depth of light penetration. Their cells contained chlorophyll and photosynthesis resumed when they were exposed to light. Photosynthesis was detected by simultaneous measurement of oxygen production and 14 C uptake. Autoradiography was used to detect incorporated 14 C. The autoradiographic method was improved by a few modifications.