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Uptake of glycine by natural phytoplankton communities
Author(s) -
Wheeler P.,
North B.,
Littler M.,
Stephens G.
Publication year - 1977
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1977.22.5.0900
Subject(s) - phytoplankton , plankton , glycine , seawater , photosynthesis , amino acid , botany , environmental chemistry , biology , oceanography , chemistry , ecology , environmental science , nutrient , biochemistry , geology
Uptake of [ 14 C]glycine by various size fractions of natural plankton communities was measured to determine if phytoplankton can compete effectively with other members of the plankton community for the free amino acids in seawater. The simultaneous occurrence of glycine uptake, plant pigments, and photosynthetic activity in the same size fractions, as well as autoradiography of the plankton samples, indicated that in some cases phytoplankton were responsible for 50% or more of glycine uptake. Comparison of prefiltration and postfiltration procedures for this type of study provided an explanation for the discrepancy between these results and those of previous studies.