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We focus on the key results from a 3-year intensive investigation of soil protozoan diversity sponsored by the Natural Environment Research Council (UK). The investigation enabled us to study simultaneously all major protozoan groups at a single site—the 1ha area of upland grassland at the Macaulay Land Use Research Institute's Sourhope Research Station in Southern Scotland. A total of 365 protozoan...
Ubiquitous dispersal of free-living microbial species implies that each and every ecosystem supports a ‘seedbank’ of microbial species that are imported by random dispersal. However, many of the microbial species present in any particular ecosystem will probably never thrive there because the local environment is unsuitable for their population growth. To test this, we investigated the ciliated protozoa...
We have analysed the geographical records of a representative selection of extant diatom species from a freshwater pond. The more often a species is recorded in the ecological literature, the greater is its apparent global distribution. One explanation is that the frequently recorded species are globally abundant, whereas species that are infrequently recorded are globally rare. We suggest a model...
This paper reviews the principal outcomes from analyses of the soil protozoan community of an upland grassland site in Scotland. An assessment of the protozoan community growth potential of 150 soil samples revealed that abundance increased in the order ciliates < testate amoebae < naked amoebae < flagellates and was inversely proportional to organism size within each functional group, whilst...
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