Laboratory and field-based studies of abundances, small-scale patchiness, and diversity of gymnamoebae in soils of varying porosity and organic content: evidence of microbiocoenoses

The Journal of Eukaryotic Microbiology
O Roger Anderson

Abstract

Soil samples (varying in granularity) from four natural sites were cultured in microcosms to determine small-scale patchiness in abundance and diversity of gymnamoebae. Eighty grams of the same thoroughly mixed soil, either moistened with distilled water (- nutrients) or supplemented with an equivalent vol. of organically enriched water (+ nutrients), were placed in covered glass jars and incubated for 14 d (25 degrees C). Abundances (number/gram soil) were assessed in each of 3 core samples (5-10 mm apart). Assay precision was estimated to be +/- 4%. Abundances were similar in the 3 closely-spaced samples, but occasional samples had higher abundances, probably representing localized enriched sites ("nutrient hot spots"). Diversity within the triplicate, closely spaced samples varied substantially. Mean abundance and diversity of amoebae were consistently higher in organically enriched soil and in soil of increasing granularity. Field samples collected directly from two of the sites showed similar patterns of abundance and diversity as found in the experimental studies, indicating substantial small-scale compartmentalization of soil protist communities. These data provide evidence of soil eukaryotic microbiocoenoses and indicat...Continue Reading

References

Nov 27, 1999·Protist·B J Finlay, T Fenchel
May 25, 2002·Microbial Ecology·O.R. AndersonM. Levandowsky
Aug 1, 1995·Environmental Science & Technology
Mar 1, 1980·Microbial Ecology·W D Taylor, J Berger
Dec 1, 1981·Microbial Ecology·M Clarholm

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Citations

Apr 7, 2005·Applied and Environmental Microbiology·Salvador Rodriguez-ZaragozaYosef Steinberger
Apr 16, 2004·Clinical Microbiology Reviews·Gilbert Greub, Didier Raoult
Apr 8, 2004·The Journal of Eukaryotic Microbiology·John O Corliss
May 2, 2013·The Journal of Eukaryotic Microbiology·O Roger Anderson
Apr 17, 2014·The Journal of Eukaryotic Microbiology·O Roger Anderson
Dec 19, 2014·PLoS Neglected Tropical Diseases·William H WheatMary Jackson

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