Investigations on phytoplankton with special reference to water usage
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.
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Format: | book biblioteca |
Language: | English |
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Freshwater Biological Association
1981
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Subjects: | Biology, Limnology, Management, Phytoplankton, Water use, Water supply, Freshwater lakes, Bioassays, Tests, Controlled conditions, Thermal stratification, Tubing, Nutrients (mineral), Diatoms, England, English Lake District, |
Online Access: | http://hdl.handle.net/1834/22789 |
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dig-aquadocs-1834-227892021-07-09T02:58:20Z Investigations on phytoplankton with special reference to water usage Lund, J.W.G. Biology Limnology Management Phytoplankton Water use Water supply Freshwater lakes Bioassays Tests Controlled conditions Thermal stratification Tubing Nutrients (mineral) Diatoms England English Lake District 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. 2021-06-24T16:04:45Z 2021-06-24T16:04:45Z 1981 book FALSE http://hdl.handle.net/1834/22789 en FBA Occasional Publications http://www.fba.org.uk/occasional-publications application/pdf application/pdf 64 Freshwater Biological Association Ambleside, UK http://aquaticcommons.org/id/eprint/5281 1256 2011-09-29 15:11:31 5281 Freshwater Biological Association |
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Biology Limnology Management Phytoplankton Water use Water supply Freshwater lakes Bioassays Tests Controlled conditions Thermal stratification Tubing Nutrients (mineral) Diatoms England English Lake District Biology Limnology Management Phytoplankton Water use Water supply Freshwater lakes Bioassays Tests Controlled conditions Thermal stratification Tubing Nutrients (mineral) Diatoms England English Lake District |
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Biology Limnology Management Phytoplankton Water use Water supply Freshwater lakes Bioassays Tests Controlled conditions Thermal stratification Tubing Nutrients (mineral) Diatoms England English Lake District Biology Limnology Management Phytoplankton Water use Water supply Freshwater lakes Bioassays Tests Controlled conditions Thermal stratification Tubing Nutrients (mineral) Diatoms England English Lake District Lund, J.W.G. Investigations on phytoplankton with special reference to water usage |
description |
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. |
format |
book |
topic_facet |
Biology Limnology Management Phytoplankton Water use Water supply Freshwater lakes Bioassays Tests Controlled conditions Thermal stratification Tubing Nutrients (mineral) Diatoms England English Lake District |
author |
Lund, J.W.G. |
author_facet |
Lund, J.W.G. |
author_sort |
Lund, J.W.G. |
title |
Investigations on phytoplankton with special reference to water usage |
title_short |
Investigations on phytoplankton with special reference to water usage |
title_full |
Investigations on phytoplankton with special reference to water usage |
title_fullStr |
Investigations on phytoplankton with special reference to water usage |
title_full_unstemmed |
Investigations on phytoplankton with special reference to water usage |
title_sort |
investigations on phytoplankton with special reference to water usage |
publisher |
Freshwater Biological Association |
publishDate |
1981 |
url |
http://hdl.handle.net/1834/22789 |
work_keys_str_mv |
AT lundjwg investigationsonphytoplanktonwithspecialreferencetowaterusage |
_version_ |
1756077677468450816 |