Soil pH governs production rate of calcium carbonate secreted by the earthworm Lumbricus terrestris |
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| Authors: | DC Lambkin KH Gwilliam C Layton MG Canti TG Piearce ME Hodson |
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| Institution: | 1. Soil Research Centre, School of Human and Environmental Sciences, University of Reading, Whiteknights, Reading RG6 6DW, UK;2. English Heritage, Ancient Monuments Laboratory, Centre for Archaeology, Fort Cumberland, Eastney PO4 9LD, UK;3. Lancaster Environment Centre, Lancaster University, LA1 4YQ, UK |
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| Abstract: | Lumbricus terrestris earthworms exposed to 11 soils of contrasting properties produced, on average, 0.8 ± 0.1 mgCaCO3 earthworm?1 day?1 in the form of granules up to 2 mm in diameter. Production rate increased with soil pH (r2 = 0.68, p < 0.01). Earthworms could be a significant source of calcite in soils. |
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