Soil pH governs production rate of calcium carbonate secreted by the earthworm Lumbricus terrestris
Lambkin, D. C., Gwilliam, K. H., Layton, C., Canti, M. G., Piearce, T. G. and Hodson, M. E. (2011) Soil pH governs production rate of calcium carbonate secreted by the earthworm Lumbricus terrestris. Applied Geochemistry, 26 (Supple). S64-S66. ISSN 0883-2927
To link to this article DOI: 10.1016/j.apgeochem.2011.03.032
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.