Advances in Microbial Ecology by Ronald M. Atlas (auth.), K. C. Marshall (eds.)

By Ronald M. Atlas (auth.), K. C. Marshall (eds.)

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Extra resources for Advances in Microbial Ecology

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1979, Population ecology of nitrifying bacteria, in: Annual Review of Microbiology (M. P. ), pp. 309-334, Annual Reviews, Palo Alto, California. , and Schmidt, E. , 1978, Diversity in the ammonia oxidizing nitrifier population of a soil, Appl. Environ. Microbiol. 36:584-588. Bianchi, M. , and Bianchi, A. , 1982, Statistical sl'mpling of bacterial strains and its use in bacterial diversity measurement, Microb. Ecol. 8:61-69. , 1978, The structure and production of phytoplankton in Lake Tynwalk, Arch.

Troussellier and Legendre (1981) have described an index of functional evenness for the study of bacterial communities, where the species level is poorly defined. This index bypasses the step of species identification, using directly as data a set of binary biochemical (and other) descriptors characterizing the microbial isolates. These workers have shown that this new index has the properties of the usual measure of evenness (J). 5[Epi log Pi + (1 - Pi) log (1 - Pi)] where Pi is a probability for the ith test being positive and e is the number of tests (descriptors) used.

The use of these nutritional measures, in addition to taxonomic-diversity measurements, appears to be useful for spatial or temporal comparisons of community structure and function. A similar approach was employed by Hauxhurst et al. (1981), who 36 Ronald M. , of physiological diversity or heterogeneity, to describe community structure. , the enzymatic capability of utilizing particular substrates, and the availability of particular substrates in that habitat. The bacterial populations in these marine ecosystems were generally eurytolerant and nutritionally versatile.

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