Chemical cues: why basic peptides are signal molecules in marine environments
Article Abstract:
Signal persistence is suggested as a reason that basic peptides have been selected as chemical cues in marine environments. Glycyl-glycyl-L-arginine (GGR) has been used to examine peptide uptake rates and mechanisms in a natural assemblage of marine bacteria. Results include seawater analyses, total amino acid concentrations, bacterial uptake of organic substrates, abiotic partitioning of 14C label in controls and uptake kinetics.
Publication Name: Limnology and Oceanography
Subject: Earth sciences
ISSN: 0024-3590
Year: 1998
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Diversity in planktonic communities: an experimental test of the intermediate disturbance hypothesis
Article Abstract:
Diversity in planktonic communities, investigated in an experimental test of the intermediate disturbance hypothesis in a lake in Germany in summer, is discussed. Diversity showed a definite maximum at the intermediate disturbance interval of 6 days, and the species number was highest at intermediate interval length. Different disturbance intensities were the result of differences in the experimental mixing depth.
Publication Name: Limnology and Oceanography
Subject: Earth sciences
ISSN: 0024-3590
Year: 1999
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