Abstract
Abstract Extract During the last two years, there have been so many enquiries about algae in farm ponds that it seems appropriate to summarize some of the information about these plants and their toxic strains. Algae are found in nearly all surface waters, irrespective of whether they are fresh, salt or brackish, and are suspended and free-floating or attached to various substrata. Although the free-floating forms are usually invisible to the naked eye, a few of them sometimes multiply rapidly, bring about an obvious change in the appearance of the water and give rise to what is often known as a water-bloom. It is a striking phenomenon which, in medieval times, was regarded with foreboding and as a warning of impending disaster. An event which is interpreted as a water-bloom occurred in Egypt (Exodus, vii, 20–21), similar events in Russia and Babylon were described by Pliny, and in Britain there is a lake in which water-blooms have appeared intermittently for more than 800 years (Griffiths, 1939 Griffiths, B. M. 1939. Early references to water-blooms in the British Isles. Proc. Linn. Soc., (Session, 151), : 12–19. [Google Scholar]; Brook, 1957 Brook, A. J. 1957. Water-blooms. New Biology, 23: 86–101. [Google Scholar]).
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.