title: Significance of algal excretory products for growth of epilimnetic bacteria.
abstract: Light-stimulated uptake of CO(2) and differential filtration through Nucleopore filters were used to estimate the significance of phytoplankton excretion as a source of bacterial carbon in water samples collected at different seasons of the year in Lake Mendota, Wis. On an annual basis, about 14% of the estimated bacterial production was accounted for by algal excretion, although at certain times of year the fraction of bacterial carbon derived from algal excretion was considerably higher. About 20% of the annual primary production was estimated to pass through the bacterial component.
authors.affiliation: Department of Bacteriology, University of Wisconsin-Madison, Madison, Wisconsin 53706.
authors.forename: T D
authors.initials: TD
authors.lastname: Brock
authors.forename: J
authors.initials: J
authors.lastname: Clyne