A comparison was made of several cumulative species/cumulative individuals indices using a statistical distribution corresponding to the species of insects in a sample from the herb stratum of a lespedeza field. Criteria used in comparison were that the indices be intensive for a given universe regardless of sample size and that the indices differentiate between universes having different numbers of species for a given number of individuals. Species/log individuals, species-1/natural log of individuals, log species/log individuals, and species/ square root of individuals were examined. Only the index of species/ square root of individuals met both of the criteria.

Description of the study area Net production of plants Gross production of plants ...... 255 255 256 257 Energy :flow of arthropods Species-area relationships .. Species-numbers relationships Interspecies contacts Species change 263 264 265 266 267 Density and production of arthropods Oxygen consumption of arthropods Species diversity and species change 257 DISCUSSION RESULTS Biomass and production of plants Density and biomass of arthropods

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