Premium
A simple theory of algal deposition
Author(s) -
SMITH I. R.
Publication year - 1982
Publication title -
freshwater biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.297
H-Index - 156
eISSN - 1365-2427
pISSN - 0046-5070
DOI - 10.1111/j.1365-2427.1982.tb00639.x
Subject(s) - algae , sedimentation , turbulence , deposition (geology) , environmental science , ecology , turbulence kinetic energy , atmospheric sciences , soil science , mechanics , physics , biology , geology , sediment , geomorphology
SUMMARY. A model describing the deposition of algae in a turbulent environment is outlined, it being assumed that all algae falling on the bed are trapped there forever. Its main features are that, above a certain threshold of turbulence the rate of deposition is independent of the turbulent intensity, and the rate of algal loss by sedimentation, in such conditions, is described by a first order kinetic equation. The hydraulic conditions under which algae settle at their intrinsic, still‐water rate and those for which the model is applicable, are examined. Some ecological implications of the model are discussed.