A Quantitative Investigation of the Bacterial and Protozoan Population of the Soil, with an Account of the Protozoan Fauna

@article{CutlerAQI,
  title={A Quantitative Investigation of the Bacterial and Protozoan Population of the Soil, with an Account of the Protozoan Fauna},
  author={D. W. Cutler and L. M. Crump and H. Sandon},
  journal={Philosophical Transactions of the Royal Society B},
  volume={211},
  pages={317-350}
}
Since the first half of the nineteenth century, it has been known that certain species of protozoa will grow in a suitable medium inoculated with soil. In spite of this, however, some later workers have asserted that such organisms did not occur in normal soils, while others, though recognising their presence, denied the existence of active forms. To Martin and Lewin (28) must be ascribed the distinction of first showing that amœbae and flagellates are present in field soil in a trophic… Expand
A method of estimating the numbers of soil protozoa, especially amoebae, based on their differential feeding on bacteria.
  • B. Singh
  • Biology, Medicine
  • The Annals of applied biology
  • 1946
TLDR
A method is described of using glass cells to set up 8 replicate cultures in one Petri dish, employing pure bacterial cultures spread over a non-nutrient agar base to provide a standard and suitable food for the Protozoa. Expand
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TLDR
Investigations of heterotrophic flagellates and naked amoebae indicate that they play an important role in agricultural soils as bacterial consumers, and to a minor extent as consumers of fungi. Expand
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TLDR
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  • Biology, Medicine
  • Antonie van Leeuwenhoek
  • 2004
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TLDR
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This preliminary note should like to deal shortly with some aspects of this question from a zoological point of view, and to describe the life-cycle of a flagellate monad which happened to be one of the organisms from this source, of which I have succeeded in obtaining pure animal cultures. Expand
Soil Protozoa and Soil Bacteria
In a paper recently published by Mr. Goodey it is definitely asserted that ciliates, amœbae and flagellates cannot function as a factor limiting the numbers of bacteria in soils. It does not appearExpand
Further observations on protozoa in relation to soil bacteria
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The investigations dealt with in the present paper represent an attempt to eliminate this source of experimental error, the aim being primarily to inoculate a partially sterilised soil with protozoa freed from bacteria. Expand
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A method is described by which it is possible to estimate the numbers of active protozoa in a soil by a dilution method, and the number of active forms can be ascertained. Expand
DAILY PERIODICITY IN THE NUMBERS OF ACTIVE SOIL FLAGELLATES: WITH A BRIEF NOTE ON THE RELATION OF TROPHIC AMOEBAE AND BACTERIAL NUMBERS.
SUMMARY. 1 There is a daily fluctuation in the number of trophic forms of the three species of flagellates Oicomonas sp. (Martin), Cercomonas longicauda and Bodo sp., in the soil of arableExpand
Observations on Coprozoic Flagellates: Together with a Suggestion as to the Significance of the Kinetonucleus in the Binucleata
TLDR
These facts afford important confirmation of the view, now generally accepted, that the Entamaebae —the truly parasitic forms—are quite distinct from the Amoebae which develop in faecal cultures, i. e .,coprozoic species. Expand
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