title: Monitoring of eutrophication by microbial uptake kinetics of dissolved organic matter in waters.
abstract: The monitoring of eutrophication can be performed by measuring the turnover times of amino acids in watermasses using the Wright-Hobbie uptake kinetics approach.The substrate specificity of amino acids varies greater with turnover times than with sampling location in watermasses with a certain water type. Thus a specific substrate among the essential amino acids should be selected to use for measuring the turnover time, in order to monitor precisely the state of trophic excitation within the steady-state oscillation in a certain aquatic system. On the other hand, either singular or plural substrates among the essential amino acids can be used for measuring the turnover time for the identification of a watermass, relevant to eutrophication.
authors.affiliation: Institute of Biological Sciences, University of Tsukuba, Sakuramura, 305, Ibaraki, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Seki