Abstract
Although many studies have shown that ant nests tend to increase soil nutrient concentrations, only a few have examined ant impact on soil biota. To date, no one has examined the mechanism behind this complex ‘ant effect.’ In this study, we employed a 2 × 2 complete factorial design (water × food) in the field to mimic the effects of harvester ant nests (Messor andrei) on soil. We hypothesized that, in the absence of ants, addition of moisture and food (seeds and insects) would interact to produce conditions found in ant nests. Our results indicated that the addition of food to the soil (regardless of water addition) best mimicked the conditions found inside M. andrei nests. Both food-treated and ant-nest soils supported higher numbers of bacteria, nematodes, miscellaneous eukaryotes, and microarthropods compared to the other soil treatments. Microbial richness was also highest in ant and food-treated samples. Moreover, the ant effect in our experiment occurred in just two months. Because ants are a widespread, abundant group with many long-lived species, they could substantially influence soil properties and belowground food webs and may have important restoration/conservation implications for terrestrial communities.
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Boulton, A.M., Amberman, K.D. (2006). How ant nests increase soil biota richness and abundance: a field experiment. In: Hawksworth, D.L., Bull, A.T. (eds) Arthropod Diversity and Conservation. Topics in Biodiversity and Conservation, vol 1. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-5204-0_5
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DOI: https://doi.org/10.1007/978-1-4020-5204-0_5
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