Zobrazeno 1 - 4
of 4
pro vyhledávání: '"James A. Hamala"'
Publikováno v:
Chemosphere. 12:1083-1099
Experiments were conducted to estimate the effects of chlorendic acid and its neutralized form on laboratory aquatic ecosystems. In short-term flask studies, chlorendic acid concentrations of 500 mg/L (pH 3.5) completely inhibited algal growth and mi
Autor:
James A. Hamala, Heinz P. Kollig
Publikováno v:
Chemosphere. 14:1391-1408
An aquatic microcosm study was designed to evaluate the direct and indirect effects of a 14 day, 100 μg atrazine/L exposure on periphyton community functional and structural parameters and to determine the recovery rates of these parameters after re
Autor:
James A. Hamala, David L. Lewis
Publikováno v:
Journal of Microbiological Methods. 6:257-264
In axenic and mixed cultures, amphotericin B (25–100 mg g−1) was tested for inhibition of selected metabolic activities of algae, fungi, bacteria and zooplakton. Effects of the antibiotic were determined based on inhibition of 14C-labelled bicarb
Publikováno v:
Hydrobiologia. 80:189-191
A sampling technique for collecting lotic periphyton on sedimentary substrates using a peristaltic pump is described. Quantitative samples of periphyton standing crop and colonization rate are collected by the same procedure. The technique eliminates