A control of gas-vacuolate cyanobacteria

Walsby, A.E. (1992) A control of gas-vacuolate cyanobacteria. In: Sutcliffe, D.W. and Jones, J.G. (eds.) Eutrophication: research and application to water supply. Ambleside, UK, Freshwater Biological Association, pp. 150-162. (FBA Special Publications,3)

PDF (The document's language is English .) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (506kB) | Preview


The cyanobacteria that cause problems in water supply are principally the colonial forms that are buoyed up by gas vesicles. The success of these organisms is due, in part, to their gas vesicles, which enable them to perform vertical migrations or to maintain themselves in the euphotic zone. The gas vesicles are also the root cause of the problems. In calm periods they cause the cyanobacteria to float to the water surface forming noxious scums, and they may prevent the colonies from sedimenting in water treatment plants. Gas vesicles are hollow, gas-filled structures; they are rigid but can be collapsed by the application of pressure. Their critical collapse pressure is influenced by their dimensions, which vary in different organisms. Gas vesicles are formed by the assembly of two types of protein, which determine their mechanical and physical properties. Methods for collapsing gas vesicles in natural populations of cyanobacteria will be considered. They may have application to the control of cyanobacteria in water supply.

Item Type: Book Section
Title: A control of gas-vacuolate cyanobacteria
Personal Creator/Author:
Walsby, A.E.
Title of Book: Eutrophication: research and application to water supply
Sutcliffe, D.W.
Jones, J.G.
Refereed: No
Series Name: FBA Special Publications
Number: 3
Page Range: pp. 150-162
Date: 1992
Publisher: Freshwater Biological Association
Place of Publication: Ambleside, UK
ISBN: 978-0900386-52-7
Issuing Agency: Freshwater Biological Association
Uncontrolled Keywords: Eutrophication; Algal blooms; Gases; Buoyancy; Algae; Bacteria; Photosynthesis; Growth; Competition
Subjects: Ecology
Item ID: 5301
Depositing User: Hardy B Schwamm
Date Deposited: 10 May 2011 13:31
Last Modified: 29 Sep 2011 15:07
Related URLs:
URI: http://aquaticcommons.org/id/eprint/5301

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...