Investigations on phytoplankton with special reference to water usage

Lund, J.W.G. (1981) Investigations on phytoplankton with special reference to water usage. Ambleside, UK, Freshwater Biological Association, 64pp. (FBA Occasional Publications,13)

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Experiments and observations on the phytoplankton of certain lakes in the English Lake District were made from early 1973 to the end of March, 1974. They included laboratory and lake bioassays and observations on the quantity and quality of the phytoplankton in six lakes. The introductory sections of the report are about algae, the ecology of phytoplankton and the scope of the contracted work. Laboratory bioassays on water from one lake, Blelham Tarn, showed that phosphorus, silicon (for diatoms) and organic substances forming complexes with iron were the major substances limiting the growth of the algae tested. The growth of the test algae was limited to different degrees by those substances and, to some extent, to a greater or lesser degree at different times of year. It is suggested that a relatively simple form of bioassay could give valuable information to water undertakings. Lake bioassays and other experiments were carried out by using large in situ tubular plastic enclosures. Two such investigations are described. The effects of a change in sewerage in two drainage basins on the phytoplankton of three lakes is described and some data given about changes since 1945 in three other lakes in the same overall drainage basin. These latter lakes have been affected too by changes in sewerage and by increasing inputs of domestic and agricultural wastes. Throughout, the relevance of the work done to practical problems of water usage is kept in mind and discussed. In the last section special reference is made to the largely unpredictable results of water transfers. The report ends with a note on river phytoplankton.

Item Type: Book
Title: Investigations on phytoplankton with special reference to water usage
Personal Creator/Author:
Lund, J.W.G.
Refereed: No
Series Name: FBA Occasional Publications
Number: 13
Number of Pages: 64
Date: 1981
Publisher: Freshwater Biological Association
Place of Publication: Ambleside, UK
Issuing Agency: Freshwater Biological Association
Uncontrolled Keywords: Phytoplankton; Water use; Water supply; Freshwater lakes; Bioassays; Tests; Controlled conditions; Thermal stratification; Tubing; Nutrients (mineral); Diatoms; England; English Lake District
Subjects: Biology
Item ID: 5281
Depositing User: Hardy B Schwamm
Date Deposited: 09 May 2011 20:05
Last Modified: 29 Sep 2011 15:11
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