The diversity and ecological role of protozoa in fresh waters

Finlay, B.J. (1997) The diversity and ecological role of protozoa in fresh waters. In: Sutcliffe, D.W. (ed.) The microbiological quality of water. Ambleside, UK, Freshwater Biological Association, pp. 113-125. (FBA Special Publications,5)

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Protozoa feed on and regulate the abundance of most types of aquatic microorganisms, and they are an integral part of all aquatic microbial food webs. Being so small, aerobic protozoa thrive at low oxygen tensions, where they feed (largely unaffected by metazoan grazing) on the abundance of other microorganisms. In anaerobic environments, they are the only phagotrophic organisms, and they live in unique symbiotic consortia with methanogens, sulphate reducers and non-sulphur purple bacteria. The number of extant species of protozoa may be quite modest (the global number of ciliate species is estimated at 3000), and most of them probably have cosmopolitan distributions. This will undoubtedly make it easier to carry out further tasks, e.g. understanding the role of protozoan species diversity in the natural environment.

Item Type: Book Section
Title: The diversity and ecological role of protozoa in fresh waters
Personal Creator/Author:
Finlay, B.J.
Title of Book: The microbiological quality of water
Sutcliffe, D.W.
Refereed: No
Series Name: FBA Special Publications
Number: 5
Page Range: pp. 113-125
Date: 1997
Publisher: Freshwater Biological Association
Place of Publication: Ambleside, UK
ISBN: 0-900386-57-6
Issuing Agency: Freshwater Biological Association
Uncontrolled Keywords: Oxygen depletion; Distribution; Species diversity; Inland water environment; Freshwater ecology; Food webs; Filter feeders; Metabolism; Protists
Subjects: Ecology
Item ID: 5338
Depositing User: Hardy B Schwamm
Date Deposited: 12 May 2011 12:01
Last Modified: 29 Sep 2011 15:04
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