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Mound-building termites and soil microbial biomass: An interaction influencing termite abundance

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Abstract

Termites are more abundant in the warmer lower latitudinal regions of the earth. Within these broad geographic regions, however, the precise nature of the factors influencing termite abundance is poorly understood. In this paper I have examined the abundance of detritivorous, mound-building termites and certain aspects of the climate, soils and vegetation at 14 sites in tropical northeastern Australia. No relationship between termite mound density and the particle-size characteristics of surface soil horizons, plant available phosphorous or rainfall was found. Microbial biomass carbon level of the surface soil was found to have a strong negative relationship with termite mound numbers. The negative interaction between the soil microbial population and termites may be due to the limiting effect of the organic matter processing capacity of the soil microbial population on the success of termites in occupying the decomposer niche in any particular area. Microbial biomass may therefore be a major factor influencing termite abundance in tropical Australian landscapes and elsewhere.

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  1. CSIRO Division of Soils, Davies Laboratory, PMB PO, 4814, Aitkenvale, Queensland, Australia

    J. A. Holt

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  1. J. A. Holt
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Holt, J.A. Mound-building termites and soil microbial biomass: An interaction influencing termite abundance. Ins. Soc 43, 427–434 (1996). https://doi.org/10.1007/BF01258415

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